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Merge from vendor branch importing dtc 1.4.3

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Major new feature in this import is FDT overlay support
This commit is contained in:
gonzo 2017-03-10 17:36:05 +00:00
commit d2c9553963
34 changed files with 2843 additions and 505 deletions
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310
contrib/dtc/Documentation/dt-object-internal.txt Normal file
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@ -0,0 +1,310 @@
Device Tree Dynamic Object format internals
-------------------------------------------
The Device Tree for most platforms is a static representation of
the hardware capabilities. This is insufficient for platforms
that need to dynamically insert Device Tree fragments into the
live tree.
This document explains the the Device Tree object format and
modifications made to the Device Tree compiler, which make it possible.
1. Simplified Problem Definition
--------------------------------
Assume we have a platform which boots using following simplified Device Tree.
---- foo.dts -----------------------------------------------------------------
/* FOO platform */
/ {
compatible = "corp,foo";
/* shared resources */
res: res {
};
/* On chip peripherals */
ocp: ocp {
/* peripherals that are always instantiated */
peripheral1 { ... };
};
};
---- foo.dts -----------------------------------------------------------------
We have a number of peripherals that after probing (using some undefined method)
should result in different Device Tree configuration.
We cannot boot with this static tree because due to the configuration of the
foo platform there exist multiple conficting peripherals DT fragments.
So for the bar peripheral we would have this:
---- foo+bar.dts -------------------------------------------------------------
/* FOO platform + bar peripheral */
/ {
compatible = "corp,foo";
/* shared resources */
res: res {
};
/* On chip peripherals */
ocp: ocp {
/* peripherals that are always instantiated */
peripheral1 { ... };
/* bar peripheral */
bar {
compatible = "corp,bar";
... /* various properties and child nodes */
};
};
};
---- foo+bar.dts -------------------------------------------------------------
While for the baz peripheral we would have this:
---- foo+baz.dts -------------------------------------------------------------
/* FOO platform + baz peripheral */
/ {
compatible = "corp,foo";
/* shared resources */
res: res {
/* baz resources */
baz_res: res_baz { ... };
};
/* On chip peripherals */
ocp: ocp {
/* peripherals that are always instantiated */
peripheral1 { ... };
/* baz peripheral */
baz {
compatible = "corp,baz";
/* reference to another point in the tree */
ref-to-res = <&baz_res>;
... /* various properties and child nodes */
};
};
};
---- foo+baz.dts -------------------------------------------------------------
We note that the baz case is more complicated, since the baz peripheral needs to
reference another node in the DT tree.
2. Device Tree Object Format Requirements
-----------------------------------------
Since the Device Tree is used for booting a number of very different hardware
platforms it is imperative that we tread very carefully.
2.a) No changes to the Device Tree binary format for the base tree. We cannot
modify the tree format at all and all the information we require should be
encoded using Device Tree itself. We can add nodes that can be safely ignored
by both bootloaders and the kernel. The plugin dtbs are optionally tagged
with a different magic number in the header but otherwise they're simple
blobs.
2.b) Changes to the DTS source format should be absolutely minimal, and should
only be needed for the DT fragment definitions, and not the base boot DT.
2.c) An explicit option should be used to instruct DTC to generate the required
information needed for object resolution. Platforms that don't use the
dynamic object format can safely ignore it.
2.d) Finally, DT syntax changes should be kept to a minimum. It should be
possible to express everything using the existing DT syntax.
3. Implementation
-----------------
The basic unit of addressing in Device Tree is the phandle. Turns out it's
relatively simple to extend the way phandles are generated and referenced
so that it's possible to dynamically convert symbolic references (labels)
to phandle values. This is a valid assumption as long as the author uses
reference syntax and does not assign phandle values manually (which might
be a problem with decompiled source files).
We can roughly divide the operation into two steps.
3.a) Compilation of the base board DTS file using the '-@' option
generates a valid DT blob with an added __symbols__ node at the root node,
containing a list of all nodes that are marked with a label.
Using the foo.dts file above the following node will be generated;
$ dtc -@ -O dtb -o foo.dtb -b 0 foo.dts
$ fdtdump foo.dtb
...
/ {
...
res {
...
phandle = <0x00000001>;
...
};
ocp {
...
phandle = <0x00000002>;
...
};
__symbols__ {
res="/res";
ocp="/ocp";
};
};
Notice that all the nodes that had a label have been recorded, and that
phandles have been generated for them.
This blob can be used to boot the board normally, the __symbols__ node will
be safely ignored both by the bootloader and the kernel (the only loss will
be a few bytes of memory and disk space).
We generate a __symbols__ node to record nodes that had labels in the base
tree (or subsequent loaded overlays) so that they can be matched up with
references made to them in Device Tree objects.
3.b) The Device Tree fragments must be compiled with the same option but they
must also have a tag (/plugin/) that allows undefined references to nodes
that are not present at compilation time to be recorded so that the runtime
loader can fix them.
So the bar peripheral's DTS format would be of the form:
/dts-v1/;
/plugin/; /* allow undefined references and record them */
/ {
.... /* various properties for loader use; i.e. part id etc. */
fragment@0 {
target = <&ocp>;
__overlay__ {
/* bar peripheral */
bar {
compatible = "corp,bar";
... /* various properties and child nodes */
}
};
};
};
Note that there's a target property that specifies the location where the
contents of the overlay node will be placed, and it references the node
in the foo.dts file.
$ dtc -@ -O dtb -o bar.dtbo -b 0 bar.dts
$ fdtdump bar.dtbo
...
/ {
... /* properties */
fragment@0 {
target = <0xffffffff>;
__overlay__ {
bar {
compatible = "corp,bar";
... /* various properties and child nodes */
}
};
};
__fixups__ {
ocp = "/fragment@0:target:0";
};
};
No __symbols__ node has been generated (no label in bar.dts).
Note that the target's ocp label is undefined, so the phandle
value is filled with the illegal value '0xffffffff', while a __fixups__
node has been generated, which marks the location in the tree where
the label lookup should store the runtime phandle value of the ocp node.
The format of the __fixups__ node entry is
<label> = "<local-full-path>:<property-name>:<offset>"
[, "<local-full-path>:<property-name>:<offset>"...];
<label> Is the label we're referring
<local-full-path> Is the full path of the node the reference is
<property-name> Is the name of the property containing the
reference
<offset> The offset (in bytes) of where the property's
phandle value is located.
Doing the same with the baz peripheral's DTS format is a little bit more
involved, since baz contains references to local labels which require
local fixups.
/dts-v1/;
/plugin/; /* allow undefined label references and record them */
/ {
.... /* various properties for loader use; i.e. part id etc. */
fragment@0 {
target = <&res>;
__overlay__ {
/* baz resources */
baz_res: res_baz { ... };
};
};
fragment@1 {
target = <&ocp>;
__overlay__ {
/* baz peripheral */
baz {
compatible = "corp,baz";
/* reference to another point in the tree */
ref-to-res = <&baz_res>;
... /* various properties and child nodes */
}
};
};
};
Note that &bar_res reference.
$ dtc -@ -O dtb -o baz.dtbo -b 0 baz.dts
$ fdtdump baz.dtbo
...
/ {
... /* properties */
fragment@0 {
target = <0xffffffff>;
__overlay__ {
res_baz {
....
phandle = <0x00000001>;
};
};
};
fragment@1 {
target = <0xffffffff>;
__overlay__ {
baz {
compatible = "corp,baz";
... /* various properties and child nodes */
ref-to-res = <0x00000001>;
}
};
};
__fixups__ {
res = "/fragment@0:target:0";
ocp = "/fragment@1:target:0";
};
__local_fixups__ {
fragment@1 {
__overlay__ {
baz {
ref-to-res = <0>;
};
};
};
};
};
This is similar to the bar case, but the reference of a local label by the
baz node generates a __local_fixups__ entry that records the place that the
local reference is being made. No matter how phandles are allocated from dtc
the run time loader must apply an offset to each phandle in every dynamic
DT object loaded. The __local_fixups__ node records the offset relative to the
start of every local reference within that property so that the loader can apply
the offset.

45
contrib/dtc/Documentation/manual.txt
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@ -30,25 +30,23 @@ I - "dtc", the device tree compiler
1) Sources
Source code for the Device Tree Compiler can be found at jdl.com.
The gitweb interface is:
Source code for the Device Tree Compiler can be found at git.kernel.org.
http://git.jdl.com/gitweb/
The upstream repository is here:
The repository is here:
git://git.kernel.org/pub/scm/utils/dtc/dtc.git
https://git.kernel.org/pub/scm/utils/dtc/dtc.git
git://www.jdl.com/software/dtc.git
http://www.jdl.com/software/dtc.git
The gitweb interface for the upstream respository is:
Tarballs of the 1.0.0 and latest releases are here:
http://www.jdl.com/software/dtc-v1.2.0.tgz
http://www.jdl.com/software/dtc-latest.tgz
https://git.kernel.org/cgit/utils/dtc/dtc.git/
1.1) Submitting Patches
Patches should be sent to jdl@jdl.com, and CC'ed to
devicetree-discuss@lists.ozlabs.org.
Patches should be sent to the maintainers:
David Gibson <david@gibson.dropbear.id.au>
Jon Loeliger <jdl@jdl.com>
and CCed to <devicetree-compiler@vger.kernel.org>.
2) Description
@ -121,6 +119,20 @@ Options:
Make space for <number> reserve map entries
Relevant for dtb and asm output only.
-@
Generates a __symbols__ node at the root node of the resulting blob
for any node labels used, and for any local references using phandles
it also generates a __local_fixups__ node that tracks them.
When using the /plugin/ tag all unresolved label references to
be tracked in the __fixups__ node, making dynamic resolution possible.
-A
Generate automatically aliases for all node labels. This is similar to
the -@ option (the __symbols__ node contain identical information) but
the semantics are slightly different since no phandles are automatically
generated for labeled nodes.
-S <bytes>
Ensure the blob at least <bytes> long, adding additional
space if needed.
@ -148,13 +160,18 @@ Additionally, dtc performs various sanity checks on the tree.
Here is a very rough overview of the layout of a DTS source file:
sourcefile: list_of_memreserve devicetree
sourcefile: versioninfo plugindecl list_of_memreserve devicetree
memreserve: label 'memreserve' ADDR ADDR ';'
| label 'memreserve' ADDR '-' ADDR ';'
devicetree: '/' nodedef
versioninfo: '/' 'dts-v1' '/' ';'
plugindecl: '/' 'plugin' '/' ';'
| /* empty */
nodedef: '{' list_of_property list_of_subnode '}' ';'
property: label PROPNAME '=' propdata ';'
@ -211,7 +228,7 @@ Node may contain sub-nodes to obtain a hierarchical structure.
For example:
- A child node named "childnode" whose unit name is
"childnode at address". It it turn has a string property
"childnode at address". It in turn has a string property
called "childprop".
childnode@addresss {

35
contrib/dtc/Makefile
View File

@ -10,14 +10,14 @@
#
VERSION = 1
PATCHLEVEL = 4
SUBLEVEL = 0
SUBLEVEL = 3
EXTRAVERSION =
LOCAL_VERSION =
CONFIG_LOCALVERSION =
CPPFLAGS = -I libfdt -I .
WARNINGS = -Werror -Wall -Wpointer-arith -Wcast-qual -Wnested-externs \
-Wstrict-prototypes -Wmissing-prototypes -Wredundant-decls
WARNINGS = -Wall -Wpointer-arith -Wcast-qual -Wnested-externs \
-Wstrict-prototypes -Wmissing-prototypes -Wredundant-decls -Wshadow
CFLAGS = -g -Os -fPIC -Werror $(WARNINGS)
BISON = bison
@ -196,6 +196,33 @@ fdtget: $(FDTGET_OBJS) $(LIBFDT_archive)
fdtput: $(FDTPUT_OBJS) $(LIBFDT_archive)
dist:
git archive --format=tar --prefix=dtc-$(dtc_version)/ HEAD \
> ../dtc-$(dtc_version).tar
cat ../dtc-$(dtc_version).tar | \
gzip -9 > ../dtc-$(dtc_version).tar.gz
#
# Release signing and uploading
# This is for maintainer convenience, don't try this at home.
#
ifeq ($(MAINTAINER),y)
GPG = gpg2
KUP = kup
KUPDIR = /pub/software/utils/dtc
kup: dist
$(GPG) --detach-sign --armor -o ../dtc-$(dtc_version).tar.sign \
../dtc-$(dtc_version).tar
$(KUP) put ../dtc-$(dtc_version).tar.gz ../dtc-$(dtc_version).tar.sign \
$(KUPDIR)/dtc-$(dtc_version).tar.gz
endif
tags: FORCE
rm -f tags
find . \( -name tests -type d -prune \) -o \
\( ! -name '*.tab.[ch]' ! -name '*.lex.c' \
-name '*.[chly]' -type f -print \) | xargs ctags -a
#
# Testsuite rules
@ -206,6 +233,7 @@ TESTS_BIN += dtc
TESTS_BIN += convert-dtsv0
TESTS_BIN += fdtput
TESTS_BIN += fdtget
TESTS_BIN += fdtdump
include tests/Makefile.tests
@ -220,6 +248,7 @@ clean: libfdt_clean tests_clean
rm -f $(STD_CLEANFILES)
rm -f $(VERSION_FILE)
rm -f $(BIN)
rm -f dtc-*.tar dtc-*.tar.sign dtc-*.tar.asc
#
# Generic compile rules

16
contrib/dtc/README Normal file
View File

@ -0,0 +1,16 @@
The source tree contains the Device Tree Compiler (dtc) toolchain for
working with device tree source and binary files and also libfdt, a
utility library for reading and manipulating the binary format.
DTC and LIBFDT are maintained by:
David Gibson <david@gibson.dropbear.id.au>
Jon Loeliger <jdl@jdl.com>
Mailing list
------------
The following list is for discussion about dtc and libfdt implementation
mailto:devicetree-compiler@vger.kernel.org
Core device tree bindings are discussed on the devicetree-spec list:
mailto:devicetree-spec@vger.kernel.org

498
contrib/dtc/checks.c
View File

@ -40,16 +40,11 @@ enum checkstatus {
struct check;
typedef void (*tree_check_fn)(struct check *c, struct node *dt);
typedef void (*node_check_fn)(struct check *c, struct node *dt, struct node *node);
typedef void (*prop_check_fn)(struct check *c, struct node *dt,
struct node *node, struct property *prop);
typedef void (*check_fn)(struct check *c, struct dt_info *dti, struct node *node);
struct check {
const char *name;
tree_check_fn tree_fn;
node_check_fn node_fn;
prop_check_fn prop_fn;
check_fn fn;
void *data;
bool warn, error;
enum checkstatus status;
@ -58,91 +53,68 @@ struct check {
struct check **prereq;
};
#define CHECK_ENTRY(nm, tfn, nfn, pfn, d, w, e, ...) \
static struct check *nm##_prereqs[] = { __VA_ARGS__ }; \
static struct check nm = { \
.name = #nm, \
.tree_fn = (tfn), \
.node_fn = (nfn), \
.prop_fn = (pfn), \
.data = (d), \
.warn = (w), \
.error = (e), \
#define CHECK_ENTRY(_nm, _fn, _d, _w, _e, ...) \
static struct check *_nm##_prereqs[] = { __VA_ARGS__ }; \
static struct check _nm = { \
.name = #_nm, \
.fn = (_fn), \
.data = (_d), \
.warn = (_w), \
.error = (_e), \
.status = UNCHECKED, \
.num_prereqs = ARRAY_SIZE(nm##_prereqs), \
.prereq = nm##_prereqs, \
.num_prereqs = ARRAY_SIZE(_nm##_prereqs), \
.prereq = _nm##_prereqs, \
};
#define WARNING(nm, tfn, nfn, pfn, d, ...) \
CHECK_ENTRY(nm, tfn, nfn, pfn, d, true, false, __VA_ARGS__)
#define ERROR(nm, tfn, nfn, pfn, d, ...) \
CHECK_ENTRY(nm, tfn, nfn, pfn, d, false, true, __VA_ARGS__)
#define CHECK(nm, tfn, nfn, pfn, d, ...) \
CHECK_ENTRY(nm, tfn, nfn, pfn, d, false, false, __VA_ARGS__)
#define TREE_WARNING(nm, d, ...) \
WARNING(nm, check_##nm, NULL, NULL, d, __VA_ARGS__)
#define TREE_ERROR(nm, d, ...) \
ERROR(nm, check_##nm, NULL, NULL, d, __VA_ARGS__)
#define TREE_CHECK(nm, d, ...) \
CHECK(nm, check_##nm, NULL, NULL, d, __VA_ARGS__)
#define NODE_WARNING(nm, d, ...) \
WARNING(nm, NULL, check_##nm, NULL, d, __VA_ARGS__)
#define NODE_ERROR(nm, d, ...) \
ERROR(nm, NULL, check_##nm, NULL, d, __VA_ARGS__)
#define NODE_CHECK(nm, d, ...) \
CHECK(nm, NULL, check_##nm, NULL, d, __VA_ARGS__)
#define PROP_WARNING(nm, d, ...) \
WARNING(nm, NULL, NULL, check_##nm, d, __VA_ARGS__)
#define PROP_ERROR(nm, d, ...) \
ERROR(nm, NULL, NULL, check_##nm, d, __VA_ARGS__)
#define PROP_CHECK(nm, d, ...) \
CHECK(nm, NULL, NULL, check_##nm, d, __VA_ARGS__)
#define WARNING(_nm, _fn, _d, ...) \
CHECK_ENTRY(_nm, _fn, _d, true, false, __VA_ARGS__)
#define ERROR(_nm, _fn, _d, ...) \
CHECK_ENTRY(_nm, _fn, _d, false, true, __VA_ARGS__)
#define CHECK(_nm, _fn, _d, ...) \
CHECK_ENTRY(_nm, _fn, _d, false, false, __VA_ARGS__)
#ifdef __GNUC__
static inline void check_msg(struct check *c, const char *fmt, ...) __attribute__((format (printf, 2, 3)));
static inline void check_msg(struct check *c, struct dt_info *dti,
const char *fmt, ...) __attribute__((format (printf, 3, 4)));
#endif
static inline void check_msg(struct check *c, const char *fmt, ...)
static inline void check_msg(struct check *c, struct dt_info *dti,
const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
if ((c->warn && (quiet < 1))
|| (c->error && (quiet < 2))) {
fprintf(stderr, "%s (%s): ",
fprintf(stderr, "%s: %s (%s): ",
strcmp(dti->outname, "-") ? dti->outname : "<stdout>",
(c->error) ? "ERROR" : "Warning", c->name);
vfprintf(stderr, fmt, ap);
fprintf(stderr, "\n");
}
va_end(ap);
}
#define FAIL(c, ...) \
do { \
TRACE((c), "\t\tFAILED at %s:%d", __FILE__, __LINE__); \
(c)->status = FAILED; \
check_msg((c), __VA_ARGS__); \
#define FAIL(c, dti, ...) \
do { \
TRACE((c), "\t\tFAILED at %s:%d", __FILE__, __LINE__); \
(c)->status = FAILED; \
check_msg((c), dti, __VA_ARGS__); \
} while (0)
static void check_nodes_props(struct check *c, struct node *dt, struct node *node)
static void check_nodes_props(struct check *c, struct dt_info *dti, struct node *node)
{
struct node *child;
struct property *prop;
TRACE(c, "%s", node->fullpath);
if (c->node_fn)
c->node_fn(c, dt, node);
if (c->prop_fn)
for_each_property(node, prop) {
TRACE(c, "%s\t'%s'", node->fullpath, prop->name);
c->prop_fn(c, dt, node, prop);
}
if (c->fn)
c->fn(c, dti, node);
for_each_child(node, child)
check_nodes_props(c, dt, child);
check_nodes_props(c, dti, child);
}
static bool run_check(struct check *c, struct node *dt)
static bool run_check(struct check *c, struct dt_info *dti)
{
struct node *dt = dti->dt;
bool error = false;
int i;
@ -155,10 +127,10 @@ static bool run_check(struct check *c, struct node *dt)
for (i = 0; i < c->num_prereqs; i++) {
struct check *prq = c->prereq[i];
error = error || run_check(prq, dt);
error = error || run_check(prq, dti);
if (prq->status != PASSED) {
c->status = PREREQ;
check_msg(c, "Failed prerequisite '%s'",
check_msg(c, dti, "Failed prerequisite '%s'",
c->prereq[i]->name);
}
}
@ -166,11 +138,8 @@ static bool run_check(struct check *c, struct node *dt)
if (c->status != UNCHECKED)
goto out;
if (c->node_fn || c->prop_fn)
check_nodes_props(c, dt, dt);
check_nodes_props(c, dti, dt);
if (c->tree_fn)
c->tree_fn(c, dt);
if (c->status == UNCHECKED)
c->status = PASSED;
@ -188,13 +157,14 @@ static bool run_check(struct check *c, struct node *dt)
*/
/* A check which always fails, for testing purposes only */
static inline void check_always_fail(struct check *c, struct node *dt)
static inline void check_always_fail(struct check *c, struct dt_info *dti,
struct node *node)
{
FAIL(c, "always_fail check");
FAIL(c, dti, "always_fail check");
}
TREE_CHECK(always_fail, NULL);
CHECK(always_fail, check_always_fail, NULL);
static void check_is_string(struct check *c, struct node *root,
static void check_is_string(struct check *c, struct dt_info *dti,
struct node *node)
{
struct property *prop;
@ -205,15 +175,15 @@ static void check_is_string(struct check *c, struct node *root,
return; /* Not present, assumed ok */
if (!data_is_one_string(prop->val))
FAIL(c, "\"%s\" property in %s is not a string",
FAIL(c, dti, "\"%s\" property in %s is not a string",
propname, node->fullpath);
}
#define WARNING_IF_NOT_STRING(nm, propname) \
WARNING(nm, NULL, check_is_string, NULL, (propname))
WARNING(nm, check_is_string, (propname))
#define ERROR_IF_NOT_STRING(nm, propname) \
ERROR(nm, NULL, check_is_string, NULL, (propname))
ERROR(nm, check_is_string, (propname))
static void check_is_cell(struct check *c, struct node *root,
static void check_is_cell(struct check *c, struct dt_info *dti,
struct node *node)
{
struct property *prop;
@ -224,19 +194,19 @@ static void check_is_cell(struct check *c, struct node *root,
return; /* Not present, assumed ok */
if (prop->val.len != sizeof(cell_t))
FAIL(c, "\"%s\" property in %s is not a single cell",
FAIL(c, dti, "\"%s\" property in %s is not a single cell",
propname, node->fullpath);
}
#define WARNING_IF_NOT_CELL(nm, propname) \
WARNING(nm, NULL, check_is_cell, NULL, (propname))
WARNING(nm, check_is_cell, (propname))
#define ERROR_IF_NOT_CELL(nm, propname) \
ERROR(nm, NULL, check_is_cell, NULL, (propname))
ERROR(nm, check_is_cell, (propname))
/*
* Structural check functions
*/
static void check_duplicate_node_names(struct check *c, struct node *dt,
static void check_duplicate_node_names(struct check *c, struct dt_info *dti,
struct node *node)
{
struct node *child, *child2;
@ -246,12 +216,12 @@ static void check_duplicate_node_names(struct check *c, struct node *dt,
child2;
child2 = child2->next_sibling)
if (streq(child->name, child2->name))
FAIL(c, "Duplicate node name %s",
FAIL(c, dti, "Duplicate node name %s",
child->fullpath);
}
NODE_ERROR(duplicate_node_names, NULL);
ERROR(duplicate_node_names, check_duplicate_node_names, NULL);
static void check_duplicate_property_names(struct check *c, struct node *dt,
static void check_duplicate_property_names(struct check *c, struct dt_info *dti,
struct node *node)
{
struct property *prop, *prop2;
@ -261,48 +231,120 @@ static void check_duplicate_property_names(struct check *c, struct node *dt,
if (prop2->deleted)
continue;
if (streq(prop->name, prop2->name))
FAIL(c, "Duplicate property name %s in %s",
FAIL(c, dti, "Duplicate property name %s in %s",
prop->name, node->fullpath);
}
}
}
NODE_ERROR(duplicate_property_names, NULL);
ERROR(duplicate_property_names, check_duplicate_property_names, NULL);
#define LOWERCASE "abcdefghijklmnopqrstuvwxyz"
#define UPPERCASE "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
#define DIGITS "0123456789"
#define PROPNODECHARS LOWERCASE UPPERCASE DIGITS ",._+*#?-"
#define PROPNODECHARSSTRICT LOWERCASE UPPERCASE DIGITS ",-"
static void check_node_name_chars(struct check *c, struct node *dt,
static void check_node_name_chars(struct check *c, struct dt_info *dti,
struct node *node)
{
int n = strspn(node->name, c->data);
if (n < strlen(node->name))
FAIL(c, "Bad character '%c' in node %s",
FAIL(c, dti, "Bad character '%c' in node %s",
node->name[n], node->fullpath);
}
NODE_ERROR(node_name_chars, PROPNODECHARS "@");
ERROR(node_name_chars, check_node_name_chars, PROPNODECHARS "@");
static void check_node_name_format(struct check *c, struct node *dt,
static void check_node_name_chars_strict(struct check *c, struct dt_info *dti,
struct node *node)
{
int n = strspn(node->name, c->data);
if (n < node->basenamelen)
FAIL(c, dti, "Character '%c' not recommended in node %s",
node->name[n], node->fullpath);
}
CHECK(node_name_chars_strict, check_node_name_chars_strict, PROPNODECHARSSTRICT);
static void check_node_name_format(struct check *c, struct dt_info *dti,
struct node *node)
{
if (strchr(get_unitname(node), '@'))
FAIL(c, "Node %s has multiple '@' characters in name",
FAIL(c, dti, "Node %s has multiple '@' characters in name",
node->fullpath);
}
NODE_ERROR(node_name_format, NULL, &node_name_chars);
ERROR(node_name_format, check_node_name_format, NULL, &node_name_chars);
static void check_property_name_chars(struct check *c, struct node *dt,
struct node *node, struct property *prop)
static void check_unit_address_vs_reg(struct check *c, struct dt_info *dti,
struct node *node)
{
int n = strspn(prop->name, c->data);
const char *unitname = get_unitname(node);
struct property *prop = get_property(node, "reg");
if (n < strlen(prop->name))
FAIL(c, "Bad character '%c' in property name \"%s\", node %s",
prop->name[n], prop->name, node->fullpath);
if (!prop) {
prop = get_property(node, "ranges");
if (prop && !prop->val.len)
prop = NULL;
}
if (prop) {
if (!unitname[0])
FAIL(c, dti, "Node %s has a reg or ranges property, but no unit name",
node->fullpath);
} else {
if (unitname[0])
FAIL(c, dti, "Node %s has a unit name, but no reg property",
node->fullpath);
}
}
PROP_ERROR(property_name_chars, PROPNODECHARS);
WARNING(unit_address_vs_reg, check_unit_address_vs_reg, NULL);
static void check_property_name_chars(struct check *c, struct dt_info *dti,
struct node *node)
{
struct property *prop;
for_each_property(node, prop) {
int n = strspn(prop->name, c->data);
if (n < strlen(prop->name))
FAIL(c, dti, "Bad character '%c' in property name \"%s\", node %s",
prop->name[n], prop->name, node->fullpath);
}
}
ERROR(property_name_chars, check_property_name_chars, PROPNODECHARS);
static void check_property_name_chars_strict(struct check *c,
struct dt_info *dti,
struct node *node)
{
struct property *prop;
for_each_property(node, prop) {
const char *name = prop->name;
int n = strspn(name, c->data);
if (n == strlen(prop->name))
continue;
/* Certain names are whitelisted */
if (streq(name, "device_type"))
continue;
/*
* # is only allowed at the beginning of property names not counting
* the vendor prefix.
*/
if (name[n] == '#' && ((n == 0) || (name[n-1] == ','))) {
name += n + 1;
n = strspn(name, c->data);
}
if (n < strlen(name))
FAIL(c, dti, "Character '%c' not recommended in property name \"%s\", node %s",
name[n], prop->name, node->fullpath);
}
}
CHECK(property_name_chars_strict, check_property_name_chars_strict, PROPNODECHARSSTRICT);
#define DESCLABEL_FMT "%s%s%s%s%s"
#define DESCLABEL_ARGS(node,prop,mark) \
@ -311,10 +353,11 @@ PROP_ERROR(property_name_chars, PROPNODECHARS);
((prop) ? (prop)->name : ""), \
((prop) ? "' in " : ""), (node)->fullpath
static void check_duplicate_label(struct check *c, struct node *dt,
static void check_duplicate_label(struct check *c, struct dt_info *dti,
const char *label, struct node *node,
struct property *prop, struct marker *mark)
{
struct node *dt = dti->dt;
struct node *othernode = NULL;
struct property *otherprop = NULL;
struct marker *othermark = NULL;
@ -331,50 +374,49 @@ static void check_duplicate_label(struct check *c, struct node *dt,
return;
if ((othernode != node) || (otherprop != prop) || (othermark != mark))
FAIL(c, "Duplicate label '%s' on " DESCLABEL_FMT
FAIL(c, dti, "Duplicate label '%s' on " DESCLABEL_FMT
" and " DESCLABEL_FMT,
label, DESCLABEL_ARGS(node, prop, mark),
DESCLABEL_ARGS(othernode, otherprop, othermark));
}
static void check_duplicate_label_node(struct check *c, struct node *dt,
static void check_duplicate_label_node(struct check *c, struct dt_info *dti,
struct node *node)
{
struct label *l;
struct property *prop;
for_each_label(node->labels, l)
check_duplicate_label(c, dt, l->label, node, NULL, NULL);
check_duplicate_label(c, dti, l->label, node, NULL, NULL);
for_each_property(node, prop) {
struct marker *m = prop->val.markers;
for_each_label(prop->labels, l)
check_duplicate_label(c, dti, l->label, node, prop, NULL);
for_each_marker_of_type(m, LABEL)
check_duplicate_label(c, dti, m->ref, node, prop, m);
}
}
static void check_duplicate_label_prop(struct check *c, struct node *dt,
struct node *node, struct property *prop)
{
struct marker *m = prop->val.markers;
struct label *l;
for_each_label(prop->labels, l)
check_duplicate_label(c, dt, l->label, node, prop, NULL);
for_each_marker_of_type(m, LABEL)
check_duplicate_label(c, dt, m->ref, node, prop, m);
}
ERROR(duplicate_label, NULL, check_duplicate_label_node,
check_duplicate_label_prop, NULL);
static void check_explicit_phandles(struct check *c, struct node *root,
struct node *node, struct property *prop)
ERROR(duplicate_label, check_duplicate_label_node, NULL);
static cell_t check_phandle_prop(struct check *c, struct dt_info *dti,
struct node *node, const char *propname)
{
struct node *root = dti->dt;
struct property *prop;
struct marker *m;
struct node *other;
cell_t phandle;
if (!streq(prop->name, "phandle")
&& !streq(prop->name, "linux,phandle"))
return;
prop = get_property(node, propname);
if (!prop)
return 0;
if (prop->val.len != sizeof(cell_t)) {
FAIL(c, "%s has bad length (%d) %s property",
FAIL(c, dti, "%s has bad length (%d) %s property",
node->fullpath, prop->val.len, prop->name);
return;
return 0;
}
m = prop->val.markers;
@ -384,42 +426,65 @@ static void check_explicit_phandles(struct check *c, struct node *root,
/* "Set this node's phandle equal to some
* other node's phandle". That's nonsensical
* by construction. */ {
FAIL(c, "%s in %s is a reference to another node",
FAIL(c, dti, "%s in %s is a reference to another node",
prop->name, node->fullpath);
return;
}
/* But setting this node's phandle equal to its own
* phandle is allowed - that means allocate a unique
* phandle for this node, even if it's not otherwise
* referenced. The value will be filled in later, so
* no further checking for now. */
return;
* we treat it as having no phandle data for now. */
return 0;
}
phandle = propval_cell(prop);
if ((phandle == 0) || (phandle == -1)) {
FAIL(c, "%s has bad value (0x%x) in %s property",
FAIL(c, dti, "%s has bad value (0x%x) in %s property",
node->fullpath, phandle, prop->name);
return;
return 0;
}
if (node->phandle && (node->phandle != phandle))
FAIL(c, "%s has %s property which replaces existing phandle information",
node->fullpath, prop->name);
return phandle;
}
static void check_explicit_phandles(struct check *c, struct dt_info *dti,
struct node *node)
{
struct node *root = dti->dt;
struct node *other;
cell_t phandle, linux_phandle;
/* Nothing should have assigned phandles yet */
assert(!node->phandle);
phandle = check_phandle_prop(c, dti, node, "phandle");
linux_phandle = check_phandle_prop(c, dti, node, "linux,phandle");
if (!phandle && !linux_phandle)
/* No valid phandles; nothing further to check */
return;
if (linux_phandle && phandle && (phandle != linux_phandle))
FAIL(c, dti, "%s has mismatching 'phandle' and 'linux,phandle'"
" properties", node->fullpath);
if (linux_phandle && !phandle)
phandle = linux_phandle;
other = get_node_by_phandle(root, phandle);
if (other && (other != node)) {
FAIL(c, "%s has duplicated phandle 0x%x (seen before at %s)",
FAIL(c, dti, "%s has duplicated phandle 0x%x (seen before at %s)",
node->fullpath, phandle, other->fullpath);
return;
}
node->phandle = phandle;
}
PROP_ERROR(explicit_phandles, NULL);
ERROR(explicit_phandles, check_explicit_phandles, NULL);
static void check_name_properties(struct check *c, struct node *root,
static void check_name_properties(struct check *c, struct dt_info *dti,
struct node *node)
{
struct property **pp, *prop = NULL;
@ -435,7 +500,7 @@ static void check_name_properties(struct check *c, struct node *root,
if ((prop->val.len != node->basenamelen+1)
|| (memcmp(prop->val.val, node->name, node->basenamelen) != 0)) {
FAIL(c, "\"name\" property in %s is incorrect (\"%s\" instead"
FAIL(c, dti, "\"name\" property in %s is incorrect (\"%s\" instead"
" of base node name)", node->fullpath, prop->val.val);
} else {
/* The name property is correct, and therefore redundant.
@ -447,60 +512,73 @@ static void check_name_properties(struct check *c, struct node *root,
}
}
ERROR_IF_NOT_STRING(name_is_string, "name");
NODE_ERROR(name_properties, NULL, &name_is_string);
ERROR(name_properties, check_name_properties, NULL, &name_is_string);
/*
* Reference fixup functions
*/
static void fixup_phandle_references(struct check *c, struct node *dt,
struct node *node, struct property *prop)
static void fixup_phandle_references(struct check *c, struct dt_info *dti,
struct node *node)
{
struct marker *m = prop->val.markers;
struct node *refnode;
cell_t phandle;
struct node *dt = dti->dt;
struct property *prop;
for_each_marker_of_type(m, REF_PHANDLE) {
assert(m->offset + sizeof(cell_t) <= prop->val.len);
for_each_property(node, prop) {
struct marker *m = prop->val.markers;
struct node *refnode;
cell_t phandle;
refnode = get_node_by_ref(dt, m->ref);
if (! refnode) {
FAIL(c, "Reference to non-existent node or label \"%s\"\n",
m->ref);
continue;
for_each_marker_of_type(m, REF_PHANDLE) {
assert(m->offset + sizeof(cell_t) <= prop->val.len);
refnode = get_node_by_ref(dt, m->ref);
if (! refnode) {
if (!(dti->dtsflags & DTSF_PLUGIN))
FAIL(c, dti, "Reference to non-existent node or "
"label \"%s\"\n", m->ref);
else /* mark the entry as unresolved */
*((cell_t *)(prop->val.val + m->offset)) =
cpu_to_fdt32(0xffffffff);
continue;
}
phandle = get_node_phandle(dt, refnode);
*((cell_t *)(prop->val.val + m->offset)) = cpu_to_fdt32(phandle);
}
phandle = get_node_phandle(dt, refnode);
*((cell_t *)(prop->val.val + m->offset)) = cpu_to_fdt32(phandle);
}
}
ERROR(phandle_references, NULL, NULL, fixup_phandle_references, NULL,
ERROR(phandle_references, fixup_phandle_references, NULL,
&duplicate_node_names, &explicit_phandles);
static void fixup_path_references(struct check *c, struct node *dt,
struct node *node, struct property *prop)
static void fixup_path_references(struct check *c, struct dt_info *dti,
struct node *node)
{
struct marker *m = prop->val.markers;
struct node *refnode;
char *path;
struct node *dt = dti->dt;
struct property *prop;
for_each_marker_of_type(m, REF_PATH) {
assert(m->offset <= prop->val.len);
for_each_property(node, prop) {
struct marker *m = prop->val.markers;
struct node *refnode;
char *path;
refnode = get_node_by_ref(dt, m->ref);
if (!refnode) {
FAIL(c, "Reference to non-existent node or label \"%s\"\n",
m->ref);
continue;
for_each_marker_of_type(m, REF_PATH) {
assert(m->offset <= prop->val.len);
refnode = get_node_by_ref(dt, m->ref);
if (!refnode) {
FAIL(c, dti, "Reference to non-existent node or label \"%s\"\n",
m->ref);
continue;
}
path = refnode->fullpath;
prop->val = data_insert_at_marker(prop->val, m, path,
strlen(path) + 1);
}
path = refnode->fullpath;
prop->val = data_insert_at_marker(prop->val, m, path,
strlen(path) + 1);
}
}
ERROR(path_references, NULL, NULL, fixup_path_references, NULL,
&duplicate_node_names);
ERROR(path_references, fixup_path_references, NULL, &duplicate_node_names);
/*
* Semantic checks
@ -513,7 +591,7 @@ WARNING_IF_NOT_STRING(device_type_is_string, "device_type");
WARNING_IF_NOT_STRING(model_is_string, "model");
WARNING_IF_NOT_STRING(status_is_string, "status");
static void fixup_addr_size_cells(struct check *c, struct node *dt,
static void fixup_addr_size_cells(struct check *c, struct dt_info *dti,
struct node *node)
{
struct property *prop;
@ -529,7 +607,7 @@ static void fixup_addr_size_cells(struct check *c, struct node *dt,
if (prop)
node->size_cells = propval_cell(prop);
}
WARNING(addr_size_cells, NULL, fixup_addr_size_cells, NULL, NULL,
WARNING(addr_size_cells, fixup_addr_size_cells, NULL,
&address_cells_is_cell, &size_cells_is_cell);
#define node_addr_cells(n) \
@ -537,7 +615,7 @@ WARNING(addr_size_cells, NULL, fixup_addr_size_cells, NULL, NULL,
#define node_size_cells(n) \
(((n)->size_cells == -1) ? 1 : (n)->size_cells)
static void check_reg_format(struct check *c, struct node *dt,
static void check_reg_format(struct check *c, struct dt_info *dti,
struct node *node)
{
struct property *prop;
@ -548,25 +626,25 @@ static void check_reg_format(struct check *c, struct node *dt,
return; /* No "reg", that's fine */
if (!node->parent) {
FAIL(c, "Root node has a \"reg\" property");
FAIL(c, dti, "Root node has a \"reg\" property");
return;
}
if (prop->val.len == 0)
FAIL(c, "\"reg\" property in %s is empty", node->fullpath);
FAIL(c, dti, "\"reg\" property in %s is empty", node->fullpath);
addr_cells = node_addr_cells(node->parent);
size_cells = node_size_cells(node->parent);
entrylen = (addr_cells + size_cells) * sizeof(cell_t);
if ((prop->val.len % entrylen) != 0)
FAIL(c, "\"reg\" property in %s has invalid length (%d bytes) "
if (!entrylen || (prop->val.len % entrylen) != 0)
FAIL(c, dti, "\"reg\" property in %s has invalid length (%d bytes) "
"(#address-cells == %d, #size-cells == %d)",
node->fullpath, prop->val.len, addr_cells, size_cells);
}
NODE_WARNING(reg_format, NULL, &addr_size_cells);
WARNING(reg_format, check_reg_format, NULL, &addr_size_cells);
static void check_ranges_format(struct check *c, struct node *dt,
static void check_ranges_format(struct check *c, struct dt_info *dti,
struct node *node)
{
struct property *prop;
@ -577,7 +655,7 @@ static void check_ranges_format(struct check *c, struct node *dt,
return;
if (!node->parent) {
FAIL(c, "Root node has a \"ranges\" property");
FAIL(c, dti, "Root node has a \"ranges\" property");
return;
}
@ -589,28 +667,28 @@ static void check_ranges_format(struct check *c, struct node *dt,
if (prop->val.len == 0) {
if (p_addr_cells != c_addr_cells)
FAIL(c, "%s has empty \"ranges\" property but its "
FAIL(c, dti, "%s has empty \"ranges\" property but its "
"#address-cells (%d) differs from %s (%d)",
node->fullpath, c_addr_cells, node->parent->fullpath,
p_addr_cells);
if (p_size_cells != c_size_cells)
FAIL(c, "%s has empty \"ranges\" property but its "
FAIL(c, dti, "%s has empty \"ranges\" property but its "
"#size-cells (%d) differs from %s (%d)",
node->fullpath, c_size_cells, node->parent->fullpath,
p_size_cells);
} else if ((prop->val.len % entrylen) != 0) {
FAIL(c, "\"ranges\" property in %s has invalid length (%d bytes) "
FAIL(c, dti, "\"ranges\" property in %s has invalid length (%d bytes) "
"(parent #address-cells == %d, child #address-cells == %d, "
"#size-cells == %d)", node->fullpath, prop->val.len,
p_addr_cells, c_addr_cells, c_size_cells);
}
}
NODE_WARNING(ranges_format, NULL, &addr_size_cells);
WARNING(ranges_format, check_ranges_format, NULL, &addr_size_cells);
/*
* Style checks
*/
static void check_avoid_default_addr_size(struct check *c, struct node *dt,
static void check_avoid_default_addr_size(struct check *c, struct dt_info *dti,
struct node *node)
{
struct property *reg, *ranges;
@ -625,31 +703,39 @@ static void check_avoid_default_addr_size(struct check *c, struct node *dt,
return;
if (node->parent->addr_cells == -1)
FAIL(c, "Relying on default #address-cells value for %s",
FAIL(c, dti, "Relying on default #address-cells value for %s",
node->fullpath);
if (node->parent->size_cells == -1)
FAIL(c, "Relying on default #size-cells value for %s",
FAIL(c, dti, "Relying on default #size-cells value for %s",
node->fullpath);
}
NODE_WARNING(avoid_default_addr_size, NULL, &addr_size_cells);
WARNING(avoid_default_addr_size, check_avoid_default_addr_size, NULL,
&addr_size_cells);
static void check_obsolete_chosen_interrupt_controller(struct check *c,
struct node *dt)
struct dt_info *dti,
struct node *node)
{
struct node *dt = dti->dt;
struct node *chosen;
struct property *prop;
if (node != dt)
return;
chosen = get_node_by_path(dt, "/chosen");
if (!chosen)
return;
prop = get_property(chosen, "interrupt-controller");
if (prop)
FAIL(c, "/chosen has obsolete \"interrupt-controller\" "
FAIL(c, dti, "/chosen has obsolete \"interrupt-controller\" "
"property");
}
TREE_WARNING(obsolete_chosen_interrupt_controller, NULL);
WARNING(obsolete_chosen_interrupt_controller,
check_obsolete_chosen_interrupt_controller, NULL);
static struct check *check_table[] = {
&duplicate_node_names, &duplicate_property_names,
@ -664,8 +750,13 @@ static struct check *check_table[] = {
&address_cells_is_cell, &size_cells_is_cell, &interrupt_cells_is_cell,
&device_type_is_string, &model_is_string, &status_is_string,
&property_name_chars_strict,
&node_name_chars_strict,
&addr_size_cells, &reg_format, &ranges_format,
&unit_address_vs_reg,
&avoid_default_addr_size,
&obsolete_chosen_interrupt_controller,
@ -706,15 +797,15 @@ static void disable_warning_error(struct check *c, bool warn, bool error)
c->error = c->error && !error;
}
void parse_checks_option(bool warn, bool error, const char *optarg)
void parse_checks_option(bool warn, bool error, const char *arg)
{
int i;
const char *name = optarg;
const char *name = arg;
bool enable = true;
if ((strncmp(optarg, "no-", 3) == 0)
|| (strncmp(optarg, "no_", 3) == 0)) {
name = optarg + 3;
if ((strncmp(arg, "no-", 3) == 0)
|| (strncmp(arg, "no_", 3) == 0)) {
name = arg + 3;
enable = false;
}
@ -733,9 +824,8 @@ void parse_checks_option(bool warn, bool error, const char *optarg)
die("Unrecognized check name \"%s\"\n", name);
}
void process_checks(bool force, struct boot_info *bi)
void process_checks(bool force, struct dt_info *dti)
{
struct node *dt = bi->dt;
int i;
int error = 0;
@ -743,7 +833,7 @@ void process_checks(bool force, struct boot_info *bi)
struct check *c = check_table[i];
if (c->warn || c->error)
error = error || run_check(c, dt);
error = error || run_check(c, dti);
}
if (error) {

2
contrib/dtc/data.c
View File

@ -74,7 +74,7 @@ struct data data_copy_escape_string(const char *s, int len)
struct data d;
char *q;
d = data_grow_for(empty_data, strlen(s)+1);
d = data_grow_for(empty_data, len + 1);
q = d.val;
while (i < len) {

69
contrib/dtc/dtc-lexer.l
View File

@ -20,7 +20,6 @@
%option noyywrap nounput noinput never-interactive
%x INCLUDE
%x BYTESTRING
%x PROPNODENAME
%s V1
@ -67,7 +66,13 @@ static int dts_version = 1;
static void push_input_file(const char *filename);
static bool pop_input_file(void);
#ifdef __GNUC__
static void lexical_error(const char *fmt, ...)
__attribute__((format (printf, 1, 2)));
#else
static void lexical_error(const char *fmt, ...);
#endif
%}
%%
@ -78,24 +83,32 @@ static void lexical_error(const char *fmt, ...);
}
<*>^"#"(line)?[ \t]+[0-9]+[ \t]+{STRING}([ \t]+[0-9]+)? {
char *line, *tmp, *fn;
char *line, *fnstart, *fnend;
struct data fn;
/* skip text before line # */
line = yytext;
while (!isdigit((unsigned char)*line))
line++;
/* skip digits in line # */
tmp = line;
while (!isspace((unsigned char)*tmp))
tmp++;
/* "NULL"-terminate line # */
*tmp = '\0';
/* start of filename */
fn = strchr(tmp + 1, '"') + 1;
/* strip trailing " from filename */
tmp = strchr(fn, '"');
*tmp = 0;
/* regexp ensures that first and list "
* in the whole yytext are those at
* beginning and end of the filename string */
fnstart = memchr(yytext, '"', yyleng);
for (fnend = yytext + yyleng - 1;
*fnend != '"'; fnend--)
;
assert(fnstart && fnend && (fnend > fnstart));
fn = data_copy_escape_string(fnstart + 1,
fnend - fnstart - 1);
/* Don't allow nuls in filenames */
if (memchr(fn.val, '\0', fn.len - 1))
lexical_error("nul in line number directive");
/* -1 since #line is the number of the next line */
srcpos_set_line(xstrdup(fn), atoi(line) - 1);
srcpos_set_line(xstrdup(fn.val), atoi(line) - 1);
data_free(fn);
}
<*><<EOF>> {
@ -118,6 +131,11 @@ static void lexical_error(const char *fmt, ...);
return DT_V1;
}
<*>"/plugin/" {
DPRINT("Keyword: /plugin/\n");
return DT_PLUGIN;
}
<*>"/memreserve/" {
DPRINT("Keyword: /memreserve/\n");
BEGIN_DEFAULT();
@ -158,7 +176,10 @@ static void lexical_error(const char *fmt, ...);
errno = 0;
yylval.integer = strtoull(yytext, &e, 0);
assert(!(*e) || !e[strspn(e, "UL")]);
if (*e && e[strspn(e, "UL")]) {
lexical_error("Bad integer literal '%s'",
yytext);
}
if (errno == ERANGE)
lexical_error("Integer literal '%s' out of range",
@ -178,16 +199,16 @@ static void lexical_error(const char *fmt, ...);
if (d.len == 1) {
lexical_error("Empty character literal");
yylval.integer = 0;
return DT_CHAR_LITERAL;
} else {
yylval.integer = (unsigned char)d.val[0];
if (d.len > 2)
lexical_error("Character literal has %d"
" characters instead of 1",
d.len - 1);
}
yylval.integer = (unsigned char)d.val[0];
if (d.len > 2)
lexical_error("Character literal has %d"
" characters instead of 1",
d.len - 1);
data_free(d);
return DT_CHAR_LITERAL;
}
@ -197,7 +218,7 @@ static void lexical_error(const char *fmt, ...);
return DT_REF;
}
<*>"&{/"{PATHCHAR}+\} { /* new-style path reference */
<*>"&{/"{PATHCHAR}*\} { /* new-style path reference */
yytext[yyleng-1] = '\0';
DPRINT("Ref: %s\n", yytext+2);
yylval.labelref = xstrdup(yytext+2);

114
contrib/dtc/dtc-parser.y
View File

@ -17,9 +17,9 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
%{
#include <stdio.h>
#include <inttypes.h>
#include "dtc.h"
#include "srcpos.h"
@ -27,17 +27,20 @@
YYLTYPE yylloc;
extern int yylex(void);
extern void print_error(char const *fmt, ...);
extern void yyerror(char const *s);
#define ERROR(loc, ...) \
do { \
srcpos_error((loc), "Error", __VA_ARGS__); \
treesource_error = true; \
} while (0)
extern struct boot_info *the_boot_info;
extern struct dt_info *parser_output;
extern bool treesource_error;
%}
%union {
char *propnodename;
char *labelref;
unsigned int cbase;
uint8_t byte;
struct data data;
@ -52,9 +55,11 @@ extern bool treesource_error;
struct node *nodelist;
struct reserve_info *re;
uint64_t integer;
unsigned int flags;
}
%token DT_V1
%token DT_PLUGIN
%token DT_MEMRESERVE
%token DT_LSHIFT DT_RSHIFT DT_LE DT_GE DT_EQ DT_NE DT_AND DT_OR
%token DT_BITS
@ -63,7 +68,6 @@ extern bool treesource_error;
%token <propnodename> DT_PROPNODENAME
%token <integer> DT_LITERAL
%token <integer> DT_CHAR_LITERAL
%token <cbase> DT_BASE
%token <byte> DT_BYTE
%token <data> DT_STRING
%token <labelref> DT_LABEL
@ -72,6 +76,8 @@ extern bool treesource_error;
%type <data> propdata
%type <data> propdataprefix
%type <flags> header
%type <flags> headers
%type <re> memreserve
%type <re> memreserves
%type <array> arrayprefix
@ -102,10 +108,31 @@ extern bool treesource_error;
%%
sourcefile:
DT_V1 ';' memreserves devicetree
headers memreserves devicetree
{
the_boot_info = build_boot_info($3, $4,
guess_boot_cpuid($4));
parser_output = build_dt_info($1, $2, $3,
guess_boot_cpuid($3));
}
;
header:
DT_V1 ';'
{
$$ = DTSF_V1;
}
| DT_V1 ';' DT_PLUGIN ';'
{
$$ = DTSF_V1 | DTSF_PLUGIN;
}
;
headers:
header
| header headers
{
if ($2 != $1)
ERROR(&yylloc, "Header flags don't match earlier ones");
$$ = $1;
}
;
@ -141,6 +168,18 @@ devicetree:
{
$$ = merge_nodes($1, $3);
}
| devicetree DT_LABEL DT_REF nodedef
{
struct node *target = get_node_by_ref($1, $3);
if (target) {
add_label(&target->labels, $2);
merge_nodes(target, $4);
} else
ERROR(&yylloc, "Label or path %s not found", $3);
$$ = $1;
}
| devicetree DT_REF nodedef
{
struct node *target = get_node_by_ref($1, $2);
@ -148,17 +187,18 @@ devicetree:
if (target)
merge_nodes(target, $3);
else
print_error("label or path, '%s', not found", $2);
ERROR(&yylloc, "Label or path %s not found", $2);
$$ = $1;
}
| devicetree DT_DEL_NODE DT_REF ';'
{
struct node *target = get_node_by_ref($1, $3);
if (!target)
print_error("label or path, '%s', not found", $3);
else
if (target)
delete_node(target);
else
ERROR(&yylloc, "Label or path %s not found", $3);
$$ = $1;
}
@ -274,10 +314,9 @@ arrayprefix:
bits = $2;
if ((bits != 8) && (bits != 16) &&
(bits != 32) && (bits != 64))
{
print_error("Only 8, 16, 32 and 64-bit elements"
" are currently supported");
(bits != 32) && (bits != 64)) {
ERROR(&yylloc, "Array elements must be"
" 8, 16, 32 or 64-bits");
bits = 32;
}
@ -302,9 +341,8 @@ arrayprefix:
* mask), all bits are one.
*/
if (($2 > mask) && (($2 | mask) != -1ULL))
print_error(
"integer value out of range "
"%016lx (%d bits)", $1.bits);
ERROR(&yylloc, "Value out of range for"
" %d-bit array element", $1.bits);
}
$$.data = data_append_integer($1.data, $2, $1.bits);
@ -318,7 +356,7 @@ arrayprefix:
REF_PHANDLE,
$2);
else
print_error("References are only allowed in "
ERROR(&yylloc, "References are only allowed in "
"arrays with 32-bit elements.");
$$.data = data_append_integer($1.data, val, $1.bits);
@ -400,8 +438,24 @@ integer_add:
integer_mul:
integer_mul '*' integer_unary { $$ = $1 * $3; }
| integer_mul '/' integer_unary { $$ = $1 / $3; }
| integer_mul '%' integer_unary { $$ = $1 % $3; }
| integer_mul '/' integer_unary
{
if ($3 != 0) {
$$ = $1 / $3;
} else {
ERROR(&yylloc, "Division by zero");
$$ = 0;
}
}
| integer_mul '%' integer_unary
{
if ($3 != 0) {
$$ = $1 % $3;
} else {
ERROR(&yylloc, "Division by zero");
$$ = 0;
}
}
| integer_unary
;
@ -438,7 +492,7 @@ subnodes:
}
| subnode propdef
{
print_error("syntax error: properties must precede subnodes");
ERROR(&yylloc, "Properties must precede subnodes");
YYERROR;
}
;
@ -461,17 +515,7 @@ subnode:
%%
void print_error(char const *fmt, ...)
void yyerror(char const *s)
{
va_list va;
va_start(va, fmt);
srcpos_verror(&yylloc, "Error", fmt, va);
va_end(va);
treesource_error = true;
}
void yyerror(char const *s) {
print_error("%s", s);
ERROR(&yylloc, "%s", s);
}

141
contrib/dtc/dtc.c
View File

@ -18,6 +18,8 @@
* USA
*/
#include <sys/stat.h>
#include "dtc.h"
#include "srcpos.h"
@ -28,7 +30,16 @@ int quiet; /* Level of quietness */
int reservenum; /* Number of memory reservation slots */
int minsize; /* Minimum blob size */
int padsize; /* Additional padding to blob */
int alignsize; /* Additional padding to blob accroding to the alignsize */
int phandle_format = PHANDLE_BOTH; /* Use linux,phandle or phandle properties */
int generate_symbols; /* enable symbols & fixup support */
int generate_fixups; /* suppress generation of fixups on symbol support */
int auto_label_aliases; /* auto generate labels -> aliases */
static int is_power_of_2(int x)
{
return (x > 0) && ((x & (x - 1)) == 0);
}
static void fill_fullpaths(struct node *tree, const char *prefix)
{
@ -48,8 +59,10 @@ static void fill_fullpaths(struct node *tree, const char *prefix)
}
/* Usage related data. */
#define FDT_VERSION(version) _FDT_VERSION(version)
#define _FDT_VERSION(version) #version
static const char usage_synopsis[] = "dtc [options] <input file>";
static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:fb:i:H:sW:E:hv";
static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:a:fb:i:H:sW:E:@Ahv";
static struct option const usage_long_opts[] = {
{"quiet", no_argument, NULL, 'q'},
{"in-format", a_argument, NULL, 'I'},
@ -60,6 +73,7 @@ static struct option const usage_long_opts[] = {
{"reserve", a_argument, NULL, 'R'},
{"space", a_argument, NULL, 'S'},
{"pad", a_argument, NULL, 'p'},
{"align", a_argument, NULL, 'a'},
{"boot-cpu", a_argument, NULL, 'b'},
{"force", no_argument, NULL, 'f'},
{"include", a_argument, NULL, 'i'},
@ -67,6 +81,8 @@ static struct option const usage_long_opts[] = {
{"phandle", a_argument, NULL, 'H'},
{"warning", a_argument, NULL, 'W'},
{"error", a_argument, NULL, 'E'},
{"symbols", no_argument, NULL, '@'},
{"auto-alias", no_argument, NULL, 'A'},
{"help", no_argument, NULL, 'h'},
{"version", no_argument, NULL, 'v'},
{NULL, no_argument, NULL, 0x0},
@ -82,11 +98,12 @@ static const char * const usage_opts_help[] = {
"\t\tdts - device tree source text\n"
"\t\tdtb - device tree blob\n"
"\t\tasm - assembler source",
"\n\tBlob version to produce, defaults to %d (for dtb and asm output)", //, DEFAULT_FDT_VERSION);
"\n\tBlob version to produce, defaults to "FDT_VERSION(DEFAULT_FDT_VERSION)" (for dtb and asm output)",
"\n\tOutput dependency file",
"\n\ttMake space for <number> reserve map entries (for dtb and asm output)",
"\n\tMake space for <number> reserve map entries (for dtb and asm output)",
"\n\tMake the blob at least <bytes> long (extra space)",
"\n\tAdd padding to the blob of <bytes> long (extra space)",
"\n\tMake the blob align to the <bytes> (extra space)",
"\n\tSet the physical boot cpu",
"\n\tTry to produce output even if the input tree has errors",
"\n\tAdd a path to search for include files",
@ -97,16 +114,63 @@ static const char * const usage_opts_help[] = {
"\t\tboth - Both \"linux,phandle\" and \"phandle\" properties",
"\n\tEnable/disable warnings (prefix with \"no-\")",
"\n\tEnable/disable errors (prefix with \"no-\")",
"\n\tEnable generation of symbols",
"\n\tEnable auto-alias of labels",
"\n\tPrint this help and exit",
"\n\tPrint version and exit",
NULL,
};
static const char *guess_type_by_name(const char *fname, const char *fallback)
{
const char *s;
s = strrchr(fname, '.');
if (s == NULL)
return fallback;
if (!strcasecmp(s, ".dts"))
return "dts";
if (!strcasecmp(s, ".dtb"))
return "dtb";
return fallback;
}
static const char *guess_input_format(const char *fname, const char *fallback)
{
struct stat statbuf;
uint32_t magic;
FILE *f;
if (stat(fname, &statbuf) != 0)
return fallback;
if (S_ISDIR(statbuf.st_mode))
return "fs";
if (!S_ISREG(statbuf.st_mode))
return fallback;
f = fopen(fname, "r");
if (f == NULL)
return fallback;
if (fread(&magic, 4, 1, f) != 1) {
fclose(f);
return fallback;
}
fclose(f);
magic = fdt32_to_cpu(magic);
if (magic == FDT_MAGIC)
return "dtb";
return guess_type_by_name(fname, fallback);
}
int main(int argc, char *argv[])
{
struct boot_info *bi;
const char *inform = "dts";
const char *outform = "dts";
struct dt_info *dti;
const char *inform = NULL;
const char *outform = NULL;
const char *outname = "-";
const char *depname = NULL;
bool force = false, sort = false;
@ -120,6 +184,7 @@ int main(int argc, char *argv[])
reservenum = 0;
minsize = 0;
padsize = 0;
alignsize = 0;
while ((opt = util_getopt_long()) != EOF) {
switch (opt) {
@ -147,6 +212,12 @@ int main(int argc, char *argv[])
case 'p':
padsize = strtol(optarg, NULL, 0);
break;
case 'a':
alignsize = strtol(optarg, NULL, 0);
if (!is_power_of_2(alignsize))
die("Invalid argument \"%d\" to -a option\n",
alignsize);
break;
case 'f':
force = true;
break;
@ -185,6 +256,13 @@ int main(int argc, char *argv[])
parse_checks_option(false, true, optarg);
break;
case '@':
generate_symbols = 1;
break;
case 'A':
auto_label_aliases = 1;
break;
case 'h':
usage(NULL);
default:
@ -211,44 +289,73 @@ int main(int argc, char *argv[])
fprintf(depfile, "%s:", outname);
}
if (inform == NULL)
inform = guess_input_format(arg, "dts");
if (outform == NULL) {
outform = guess_type_by_name(outname, NULL);
if (outform == NULL) {
if (streq(inform, "dts"))
outform = "dtb";
else
outform = "dts";
}
}
if (streq(inform, "dts"))
bi = dt_from_source(arg);
dti = dt_from_source(arg);
else if (streq(inform, "fs"))
bi = dt_from_fs(arg);
dti = dt_from_fs(arg);
else if(streq(inform, "dtb"))
bi = dt_from_blob(arg);
dti = dt_from_blob(arg);
else
die("Unknown input format \"%s\"\n", inform);
dti->outname = outname;
if (depfile) {
fputc('\n', depfile);
fclose(depfile);
}
if (cmdline_boot_cpuid != -1)
bi->boot_cpuid_phys = cmdline_boot_cpuid;
dti->boot_cpuid_phys = cmdline_boot_cpuid;
fill_fullpaths(bi->dt, "");
process_checks(force, bi);
fill_fullpaths(dti->dt, "");
process_checks(force, dti);
/* on a plugin, generate by default */
if (dti->dtsflags & DTSF_PLUGIN) {
generate_fixups = 1;
}
if (auto_label_aliases)
generate_label_tree(dti, "aliases", false);
if (generate_symbols)
generate_label_tree(dti, "__symbols__", true);
if (generate_fixups) {
generate_fixups_tree(dti, "__fixups__");
generate_local_fixups_tree(dti, "__local_fixups__");
}
if (sort)
sort_tree(bi);
sort_tree(dti);
if (streq(outname, "-")) {
outf = stdout;
} else {
outf = fopen(outname, "w");
outf = fopen(outname, "wb");
if (! outf)
die("Couldn't open output file %s: %s\n",
outname, strerror(errno));
}
if (streq(outform, "dts")) {
dt_to_source(outf, bi);
dt_to_source(outf, dti);
} else if (streq(outform, "dtb")) {
dt_to_blob(outf, bi, outversion);
dt_to_blob(outf, dti, outversion);
} else if (streq(outform, "asm")) {
dt_to_asm(outf, bi, outversion);
dt_to_asm(outf, dti, outversion);
} else if (streq(outform, "null")) {
/* do nothing */
} else {

48
contrib/dtc/dtc.h
View File

@ -38,9 +38,9 @@
#include "util.h"
#ifdef DEBUG
#define debug(fmt,args...) printf(fmt, ##args)
#define debug(...) printf(__VA_ARGS__)
#else
#define debug(fmt,args...)
#define debug(...)
#endif
@ -53,7 +53,11 @@ extern int quiet; /* Level of quietness */
extern int reservenum; /* Number of memory reservation slots */
extern int minsize; /* Minimum blob size */
extern int padsize; /* Additional padding to blob */
extern int alignsize; /* Additional padding to blob accroding to the alignsize */
extern int phandle_format; /* Use linux,phandle or phandle properties */
extern int generate_symbols; /* generate symbols for nodes with labels */
extern int generate_fixups; /* generate fixups */
extern int auto_label_aliases; /* auto generate labels -> aliases */
#define PHANDLE_LEGACY 0x1
#define PHANDLE_EPAPR 0x2
@ -88,7 +92,7 @@ struct data {
};
#define empty_data ((struct data){ /* all .members = 0 or NULL */ })
#define empty_data ((struct data){ 0 /* all .members = 0 or NULL */ })
#define for_each_marker(m) \
for (; (m); (m) = (m)->next)
@ -201,6 +205,8 @@ void delete_property(struct property *prop);
void add_child(struct node *parent, struct node *child);
void delete_node_by_name(struct node *parent, char *name);
void delete_node(struct node *node);
void append_to_property(struct node *node,
char *name, const void *data, int len);
const char *get_unitname(struct node *node);
struct property *get_property(struct node *node, const char *propname);
@ -235,35 +241,45 @@ struct reserve_info *add_reserve_entry(struct reserve_info *list,
struct reserve_info *new);
struct boot_info {
struct dt_info {
unsigned int dtsflags;
struct reserve_info *reservelist;
struct node *dt; /* the device tree */
uint32_t boot_cpuid_phys;
struct node *dt; /* the device tree */
const char *outname; /* filename being written to, "-" for stdout */
};
struct boot_info *build_boot_info(struct reserve_info *reservelist,
struct node *tree, uint32_t boot_cpuid_phys);
void sort_tree(struct boot_info *bi);
/* DTS version flags definitions */
#define DTSF_V1 0x0001 /* /dts-v1/ */
#define DTSF_PLUGIN 0x0002 /* /plugin/ */
struct dt_info *build_dt_info(unsigned int dtsflags,
struct reserve_info *reservelist,
struct node *tree, uint32_t boot_cpuid_phys);
void sort_tree(struct dt_info *dti);
void generate_label_tree(struct dt_info *dti, char *name, bool allocph);
void generate_fixups_tree(struct dt_info *dti, char *name);
void generate_local_fixups_tree(struct dt_info *dti, char *name);
/* Checks */
void parse_checks_option(bool warn, bool error, const char *optarg);
void process_checks(bool force, struct boot_info *bi);
void parse_checks_option(bool warn, bool error, const char *arg);
void process_checks(bool force, struct dt_info *dti);
/* Flattened trees */
void dt_to_blob(FILE *f, struct boot_info *bi, int version);
void dt_to_asm(FILE *f, struct boot_info *bi, int version);
void dt_to_blob(FILE *f, struct dt_info *dti, int version);
void dt_to_asm(FILE *f, struct dt_info *dti, int version);
struct boot_info *dt_from_blob(const char *fname);
struct dt_info *dt_from_blob(const char *fname);
/* Tree source */
void dt_to_source(FILE *f, struct boot_info *bi);
struct boot_info *dt_from_source(const char *f);
void dt_to_source(FILE *f, struct dt_info *dti);
struct dt_info *dt_from_source(const char *f);
/* FS trees */
struct boot_info *dt_from_fs(const char *dirname);
struct dt_info *dt_from_fs(const char *dirname);
#endif /* _DTC_H */

39
contrib/dtc/fdtdump.c
View File

@ -15,6 +15,9 @@
#include "util.h"
#define FDT_MAGIC_SIZE 4
#define MAX_VERSION 17
#define ALIGN(x, a) (((x) + ((a) - 1)) & ~((a) - 1))
#define PALIGN(p, a) ((void *)(ALIGN((unsigned long)(p), (a))))
#define GET_CELL(p) (p += 4, *((const uint32_t *)(p-4)))
@ -22,7 +25,7 @@
static const char *tagname(uint32_t tag)
{
static const char * const names[] = {
#define TN(t) [t] #t
#define TN(t) [t] = #t
TN(FDT_BEGIN_NODE),
TN(FDT_END_NODE),
TN(FDT_PROP),
@ -88,7 +91,7 @@ static void dump_blob(void *blob, bool debug)
if (addr == 0 && size == 0)
break;
printf("/memreserve/ %llx %llx;\n",
printf("/memreserve/ %#llx %#llx;\n",
(unsigned long long)addr, (unsigned long long)size);
}
@ -157,6 +160,20 @@ static const char * const usage_opts_help[] = {
USAGE_COMMON_OPTS_HELP
};
static bool valid_header(char *p, off_t len)
{
if (len < sizeof(struct fdt_header) ||
fdt_magic(p) != FDT_MAGIC ||
fdt_version(p) > MAX_VERSION ||
fdt_last_comp_version(p) >= MAX_VERSION ||
fdt_totalsize(p) >= len ||
fdt_off_dt_struct(p) >= len ||
fdt_off_dt_strings(p) >= len)
return 0;
else
return 1;
}
int main(int argc, char *argv[])
{
int opt;
@ -188,26 +205,21 @@ int main(int argc, char *argv[])
/* try and locate an embedded fdt in a bigger blob */
if (scan) {
unsigned char smagic[4];
unsigned char smagic[FDT_MAGIC_SIZE];
char *p = buf;
char *endp = buf + len;
fdt_set_magic(smagic, FDT_MAGIC);
/* poor man's memmem */
while (true) {
p = memchr(p, smagic[0], endp - p - 4);
while ((endp - p) >= FDT_MAGIC_SIZE) {
p = memchr(p, smagic[0], endp - p - FDT_MAGIC_SIZE);
if (!p)
break;
if (fdt_magic(p) == FDT_MAGIC) {
/* try and validate the main struct */
off_t this_len = endp - p;
fdt32_t max_version = 17;
if (fdt_version(p) <= max_version &&
fdt_last_comp_version(p) < max_version &&
fdt_totalsize(p) < this_len &&
fdt_off_dt_struct(p) < this_len &&
fdt_off_dt_strings(p) < this_len)
if (valid_header(p, this_len))
break;
if (debug)
printf("%s: skipping fdt magic at offset %#zx\n",
@ -215,11 +227,12 @@ int main(int argc, char *argv[])
}
++p;
}
if (!p)
if (!p || endp - p < sizeof(struct fdt_header))
die("%s: could not locate fdt magic\n", file);
printf("%s: found fdt at offset %#zx\n", file, p - buf);
buf = p;
}
} else if (!valid_header(buf, len))
die("%s: header is not valid\n", file);
dump_blob(buf, debug);

8
contrib/dtc/fdtget.c
View File

@ -266,14 +266,20 @@ static int do_fdtget(struct display_info *disp, const char *filename,
continue;
} else {
report_error(arg[i], node);
free(blob);
return -1;
}
}
prop = args_per_step == 1 ? NULL : arg[i + 1];
if (show_data_for_item(blob, disp, node, prop))
if (show_data_for_item(blob, disp, node, prop)) {
free(blob);
return -1;
}
}
free(blob);
return 0;
}

99
contrib/dtc/fdtput.c
View File

@ -32,6 +32,8 @@
enum oper_type {
OPER_WRITE_PROP, /* Write a property in a node */
OPER_CREATE_NODE, /* Create a new node */
OPER_REMOVE_NODE, /* Delete a node */
OPER_DELETE_PROP, /* Delete a property in a node */
};
struct display_info {
@ -96,12 +98,7 @@ static int encode_value(struct display_info *disp, char **arg, int arg_count,
/* enlarge our value buffer by a suitable margin if needed */
if (upto + len > value_size) {
value_size = (upto + len) + 500;
value = realloc(value, value_size);
if (!value) {
fprintf(stderr, "Out of mmory: cannot alloc "
"%d bytes\n", value_size);
return -1;
}
value = xrealloc(value, value_size);
}
ptr = value + upto;
@ -275,11 +272,65 @@ static int create_node(char **blob, const char *node_name)
return 0;
}
/**
* Delete a property of a node in the fdt.
*
* @param blob FDT blob to write into
* @param node_name Path to node containing the property to delete
* @param prop_name Name of property to delete
* @return 0 on success, or -1 on failure
*/
static int delete_prop(char *blob, const char *node_name, const char *prop_name)
{
int node = 0;
node = fdt_path_offset(blob, node_name);
if (node < 0) {
report_error(node_name, -1, node);
return -1;
}
node = fdt_delprop(blob, node, prop_name);
if (node < 0) {
report_error(node_name, -1, node);
return -1;
}
return 0;
}
/**
* Delete a node in the fdt.
*
* @param blob FDT blob to write into
* @param node_name Name of node to delete
* @return 0 on success, or -1 on failure
*/
static int delete_node(char *blob, const char *node_name)
{
int node = 0;
node = fdt_path_offset(blob, node_name);
if (node < 0) {
report_error(node_name, -1, node);
return -1;
}
node = fdt_del_node(blob, node);
if (node < 0) {
report_error(node_name, -1, node);
return -1;
}
return 0;
}
static int do_fdtput(struct display_info *disp, const char *filename,
char **arg, int arg_count)
{
char *value;
char *value = NULL;
char *blob;
char *node;
int len, ret = 0;
blob = utilfdt_read(filename);
@ -307,6 +358,15 @@ static int do_fdtput(struct display_info *disp, const char *filename,
ret = create_node(&blob, *arg);
}
break;
case OPER_REMOVE_NODE:
for (; ret >= 0 && arg_count--; arg++)
ret = delete_node(blob, *arg);
break;
case OPER_DELETE_PROP:
node = *arg;
for (arg++; ret >= 0 && arg_count-- > 1; arg++)
ret = delete_prop(blob, node, *arg);
break;
}
if (ret >= 0) {
fdt_pack(blob);
@ -314,6 +374,11 @@ static int do_fdtput(struct display_info *disp, const char *filename,
}
free(blob);
if (value) {
free(value);
}
return ret;
}
@ -322,12 +387,16 @@ static const char usage_synopsis[] =
"write a property value to a device tree\n"
" fdtput <options> <dt file> <node> <property> [<value>...]\n"
" fdtput -c <options> <dt file> [<node>...]\n"
" fdtput -r <options> <dt file> [<node>...]\n"
" fdtput -d <options> <dt file> <node> [<property>...]\n"
"\n"
"The command line arguments are joined together into a single value.\n"
USAGE_TYPE_MSG;
static const char usage_short_opts[] = "cpt:v" USAGE_COMMON_SHORT_OPTS;
static const char usage_short_opts[] = "crdpt:v" USAGE_COMMON_SHORT_OPTS;
static struct option const usage_long_opts[] = {
{"create", no_argument, NULL, 'c'},
{"remove", no_argument, NULL, 'r'},
{"delete", no_argument, NULL, 'd'},
{"auto-path", no_argument, NULL, 'p'},
{"type", a_argument, NULL, 't'},
{"verbose", no_argument, NULL, 'v'},
@ -335,6 +404,8 @@ static struct option const usage_long_opts[] = {
};
static const char * const usage_opts_help[] = {
"Create nodes if they don't already exist",
"Delete nodes (and any subnodes) if they already exist",
"Delete properties if they already exist",
"Automatically create nodes as needed for the node path",
"Type of data",
"Display each value decoded from command line",
@ -353,8 +424,6 @@ int main(int argc, char *argv[])
while ((opt = util_getopt_long()) != EOF) {
/*
* TODO: add options to:
* - delete property
* - delete node (optionally recursively)
* - rename node
* - pack fdt before writing
* - set amount of free space when writing
@ -365,6 +434,12 @@ int main(int argc, char *argv[])
case 'c':
disp.oper = OPER_CREATE_NODE;
break;
case 'r':
disp.oper = OPER_REMOVE_NODE;
break;
case 'd':
disp.oper = OPER_DELETE_PROP;
break;
case 'p':
disp.auto_path = 1;
break;
@ -395,6 +470,10 @@ int main(int argc, char *argv[])
usage("missing property");
}
if (disp.oper == OPER_DELETE_PROP)
if (argc < 1)
usage("missing node");
if (do_fdtput(&disp, filename, argv, argc))
return 1;
return 0;

45
contrib/dtc/flattree.c
View File

@ -366,7 +366,7 @@ static void make_fdt_header(struct fdt_header *fdt,
fdt->size_dt_struct = cpu_to_fdt32(dtsize);
}
void dt_to_blob(FILE *f, struct boot_info *bi, int version)
void dt_to_blob(FILE *f, struct dt_info *dti, int version)
{
struct version_info *vi = NULL;
int i;
@ -384,29 +384,36 @@ void dt_to_blob(FILE *f, struct boot_info *bi, int version)
if (!vi)
die("Unknown device tree blob version %d\n", version);
flatten_tree(bi->dt, &bin_emitter, &dtbuf, &strbuf, vi);
flatten_tree(dti->dt, &bin_emitter, &dtbuf, &strbuf, vi);
bin_emit_cell(&dtbuf, FDT_END);
reservebuf = flatten_reserve_list(bi->reservelist, vi);
reservebuf = flatten_reserve_list(dti->reservelist, vi);
/* Make header */
make_fdt_header(&fdt, vi, reservebuf.len, dtbuf.len, strbuf.len,
bi->boot_cpuid_phys);
dti->boot_cpuid_phys);
/*
* If the user asked for more space than is used, adjust the totalsize.
*/
if (minsize > 0) {
padlen = minsize - fdt32_to_cpu(fdt.totalsize);
if ((padlen < 0) && (quiet < 1))
fprintf(stderr,
"Warning: blob size %d >= minimum size %d\n",
fdt32_to_cpu(fdt.totalsize), minsize);
if (padlen < 0) {
padlen = 0;
if (quiet < 1)
fprintf(stderr,
"Warning: blob size %d >= minimum size %d\n",
fdt32_to_cpu(fdt.totalsize), minsize);
}
}
if (padsize > 0)
padlen = padsize;
if (alignsize > 0)
padlen = ALIGN(fdt32_to_cpu(fdt.totalsize) + padlen, alignsize)
- fdt32_to_cpu(fdt.totalsize);
if (padlen > 0) {
int tsize = fdt32_to_cpu(fdt.totalsize);
tsize += padlen;
@ -460,7 +467,7 @@ static void dump_stringtable_asm(FILE *f, struct data strbuf)
}
}
void dt_to_asm(FILE *f, struct boot_info *bi, int version)
void dt_to_asm(FILE *f, struct dt_info *dti, int version)
{
struct version_info *vi = NULL;
int i;
@ -500,7 +507,7 @@ void dt_to_asm(FILE *f, struct boot_info *bi, int version)
if (vi->flags & FTF_BOOTCPUID) {
fprintf(f, "\t/* boot_cpuid_phys */\n");
asm_emit_cell(f, bi->boot_cpuid_phys);
asm_emit_cell(f, dti->boot_cpuid_phys);
}
if (vi->flags & FTF_STRTABSIZE) {
@ -530,7 +537,7 @@ void dt_to_asm(FILE *f, struct boot_info *bi, int version)
* Use .long on high and low halfs of u64s to avoid .quad
* as it appears .quad isn't available in some assemblers.
*/
for (re = bi->reservelist; re; re = re->next) {
for (re = dti->reservelist; re; re = re->next) {
struct label *l;
for_each_label(re->labels, l) {
@ -550,7 +557,7 @@ void dt_to_asm(FILE *f, struct boot_info *bi, int version)
fprintf(f, "\t.long\t0, 0\n\t.long\t0, 0\n");
emit_label(f, symprefix, "struct_start");
flatten_tree(bi->dt, &asm_emitter, f, &strbuf, vi);
flatten_tree(dti->dt, &asm_emitter, f, &strbuf, vi);
fprintf(f, "\t/* FDT_END */\n");
asm_emit_cell(f, FDT_END);
@ -572,6 +579,8 @@ void dt_to_asm(FILE *f, struct boot_info *bi, int version)
if (padsize > 0) {
fprintf(f, "\t.space\t%d, 0\n", padsize);
}
if (alignsize > 0)
asm_emit_align(f, alignsize);
emit_label(f, symprefix, "blob_abs_end");
data_free(strbuf);
@ -797,11 +806,15 @@ static struct node *unflatten_tree(struct inbuf *dtbuf,
}
} while (val != FDT_END_NODE);
if (node->name != flatname) {
free(flatname);
}
return node;
}
struct boot_info *dt_from_blob(const char *fname)
struct dt_info *dt_from_blob(const char *fname)
{
FILE *f;
uint32_t magic, totalsize, version, size_dt, boot_cpuid_phys;
@ -889,7 +902,7 @@ struct boot_info *dt_from_blob(const char *fname)
if (version >= 3) {
uint32_t size_str = fdt32_to_cpu(fdt->size_dt_strings);
if (off_str+size_str > totalsize)
if ((off_str+size_str < off_str) || (off_str+size_str > totalsize))
die("String table extends past total size\n");
inbuf_init(&strbuf, blob + off_str, blob + off_str + size_str);
} else {
@ -898,7 +911,7 @@ struct boot_info *dt_from_blob(const char *fname)
if (version >= 17) {
size_dt = fdt32_to_cpu(fdt->size_dt_struct);
if (off_dt+size_dt > totalsize)
if ((off_dt+size_dt < off_dt) || (off_dt+size_dt > totalsize))
die("Structure block extends past total size\n");
}
@ -929,5 +942,5 @@ struct boot_info *dt_from_blob(const char *fname)
fclose(f);
return build_boot_info(reservelist, tree, boot_cpuid_phys);
return build_dt_info(DTSF_V1, reservelist, tree, boot_cpuid_phys);
}

21
contrib/dtc/fstree.c
View File

@ -37,26 +37,26 @@ static struct node *read_fstree(const char *dirname)
tree = build_node(NULL, NULL);
while ((de = readdir(d)) != NULL) {
char *tmpnam;
char *tmpname;
if (streq(de->d_name, ".")
|| streq(de->d_name, ".."))
continue;
tmpnam = join_path(dirname, de->d_name);
tmpname = join_path(dirname, de->d_name);
if (lstat(tmpnam, &st) < 0)
die("stat(%s): %s\n", tmpnam, strerror(errno));
if (lstat(tmpname, &st) < 0)
die("stat(%s): %s\n", tmpname, strerror(errno));
if (S_ISREG(st.st_mode)) {
struct property *prop;
FILE *pfile;
pfile = fopen(tmpnam, "r");
pfile = fopen(tmpname, "rb");
if (! pfile) {
fprintf(stderr,
"WARNING: Cannot open %s: %s\n",
tmpnam, strerror(errno));
tmpname, strerror(errno));
} else {
prop = build_property(xstrdup(de->d_name),
data_copy_file(pfile,
@ -67,25 +67,24 @@ static struct node *read_fstree(const char *dirname)
} else if (S_ISDIR(st.st_mode)) {
struct node *newchild;
newchild = read_fstree(tmpnam);
newchild = read_fstree(tmpname);
newchild = name_node(newchild, xstrdup(de->d_name));
add_child(tree, newchild);
}
free(tmpnam);
free(tmpname);
}
closedir(d);
return tree;
}
struct boot_info *dt_from_fs(const char *dirname)
struct dt_info *dt_from_fs(const char *dirname)
{
struct node *tree;
tree = read_fstree(dirname);
tree = name_node(tree, "");
return build_boot_info(NULL, tree, guess_boot_cpuid(tree));
return build_dt_info(DTSF_V1, NULL, tree, guess_boot_cpuid(tree));
}

3
contrib/dtc/libfdt/Makefile.libfdt
View File

@ -6,5 +6,6 @@
LIBFDT_soname = libfdt.$(SHAREDLIB_EXT).1
LIBFDT_INCLUDES = fdt.h libfdt.h libfdt_env.h
LIBFDT_VERSION = version.lds
LIBFDT_SRCS = fdt.c fdt_ro.c fdt_wip.c fdt_sw.c fdt_rw.c fdt_strerror.c fdt_empty_tree.c
LIBFDT_SRCS = fdt.c fdt_ro.c fdt_wip.c fdt_sw.c fdt_rw.c fdt_strerror.c fdt_empty_tree.c \
fdt_addresses.c fdt_overlay.c
LIBFDT_OBJS = $(LIBFDT_SRCS:%.c=%.o)

13
contrib/dtc/libfdt/fdt.c
View File

@ -76,18 +76,19 @@ int fdt_check_header(const void *fdt)
const void *fdt_offset_ptr(const void *fdt, int offset, unsigned int len)
{
const char *p;
unsigned absoffset = offset + fdt_off_dt_struct(fdt);
if ((absoffset < offset)
|| ((absoffset + len) < absoffset)
|| (absoffset + len) > fdt_totalsize(fdt))
return NULL;
if (fdt_version(fdt) >= 0x11)
if (((offset + len) < offset)
|| ((offset + len) > fdt_size_dt_struct(fdt)))
return NULL;
p = _fdt_offset_ptr(fdt, offset);
if (p + len < p)
return NULL;
return p;
return _fdt_offset_ptr(fdt, offset);
}
uint32_t fdt_next_tag(const void *fdt, int startoffset, int *nextoffset)

96
contrib/dtc/libfdt/fdt_addresses.c Normal file
View File

@ -0,0 +1,96 @@
/*
* libfdt - Flat Device Tree manipulation
* Copyright (C) 2014 David Gibson <david@gibson.dropbear.id.au>
*
* libfdt is dual licensed: you can use it either under the terms of
* the GPL, or the BSD license, at your option.
*
* a) This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
* MA 02110-1301 USA
*
* Alternatively,
*
* b) Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* 1. Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "libfdt_env.h"
#include <fdt.h>
#include <libfdt.h>
#include "libfdt_internal.h"
int fdt_address_cells(const void *fdt, int nodeoffset)
{
const fdt32_t *ac;
int val;
int len;
ac = fdt_getprop(fdt, nodeoffset, "#address-cells", &len);
if (!ac)
return 2;
if (len != sizeof(*ac))
return -FDT_ERR_BADNCELLS;
val = fdt32_to_cpu(*ac);
if ((val <= 0) || (val > FDT_MAX_NCELLS))
return -FDT_ERR_BADNCELLS;
return val;
}
int fdt_size_cells(const void *fdt, int nodeoffset)
{
const fdt32_t *sc;
int val;
int len;
sc = fdt_getprop(fdt, nodeoffset, "#size-cells", &len);
if (!sc)
return 2;
if (len != sizeof(*sc))
return -FDT_ERR_BADNCELLS;
val = fdt32_to_cpu(*sc);
if ((val < 0) || (val > FDT_MAX_NCELLS))
return -FDT_ERR_BADNCELLS;
return val;
}

676
contrib/dtc/libfdt/fdt_overlay.c Normal file
View File

@ -0,0 +1,676 @@
#include "libfdt_env.h"
#include <fdt.h>
#include <libfdt.h>
#include "libfdt_internal.h"
/**
* overlay_get_target_phandle - retrieves the target phandle of a fragment
* @fdto: pointer to the device tree overlay blob
* @fragment: node offset of the fragment in the overlay
*
* overlay_get_target_phandle() retrieves the target phandle of an
* overlay fragment when that fragment uses a phandle (target
* property) instead of a path (target-path property).
*
* returns:
* the phandle pointed by the target property
* 0, if the phandle was not found
* -1, if the phandle was malformed
*/
static uint32_t overlay_get_target_phandle(const void *fdto, int fragment)
{
const uint32_t *val;
int len;
val = fdt_getprop(fdto, fragment, "target", &len);
if (!val)
return 0;
if ((len != sizeof(*val)) || (*val == (uint32_t)-1))
return (uint32_t)-1;
return fdt32_to_cpu(*val);
}
/**
* overlay_get_target - retrieves the offset of a fragment's target
* @fdt: Base device tree blob
* @fdto: Device tree overlay blob
* @fragment: node offset of the fragment in the overlay
*
* overlay_get_target() retrieves the target offset in the base
* device tree of a fragment, no matter how the actual targetting is
* done (through a phandle or a path)
*
* returns:
* the targetted node offset in the base device tree
* Negative error code on error
*/
static int overlay_get_target(const void *fdt, const void *fdto,
int fragment)
{
uint32_t phandle;
const char *path;
int path_len;
/* Try first to do a phandle based lookup */
phandle = overlay_get_target_phandle(fdto, fragment);
if (phandle == (uint32_t)-1)
return -FDT_ERR_BADPHANDLE;
if (phandle)
return fdt_node_offset_by_phandle(fdt, phandle);
/* And then a path based lookup */
path = fdt_getprop(fdto, fragment, "target-path", &path_len);
if (!path) {
/*
* If we haven't found either a target or a
* target-path property in a node that contains a
* __overlay__ subnode (we wouldn't be called
* otherwise), consider it a improperly written
* overlay
*/
if (path_len == -FDT_ERR_NOTFOUND)
return -FDT_ERR_BADOVERLAY;
return path_len;
}
return fdt_path_offset(fdt, path);
}
/**
* overlay_phandle_add_offset - Increases a phandle by an offset
* @fdt: Base device tree blob
* @node: Device tree overlay blob
* @name: Name of the property to modify (phandle or linux,phandle)
* @delta: offset to apply
*
* overlay_phandle_add_offset() increments a node phandle by a given
* offset.
*
* returns:
* 0 on success.
* Negative error code on error
*/
static int overlay_phandle_add_offset(void *fdt, int node,
const char *name, uint32_t delta)
{
const uint32_t *val;
uint32_t adj_val;
int len;
val = fdt_getprop(fdt, node, name, &len);
if (!val)
return len;
if (len != sizeof(*val))
return -FDT_ERR_BADPHANDLE;
adj_val = fdt32_to_cpu(*val);
if ((adj_val + delta) < adj_val)
return -FDT_ERR_NOPHANDLES;
adj_val += delta;
if (adj_val == (uint32_t)-1)
return -FDT_ERR_NOPHANDLES;
return fdt_setprop_inplace_u32(fdt, node, name, adj_val);
}
/**
* overlay_adjust_node_phandles - Offsets the phandles of a node
* @fdto: Device tree overlay blob
* @node: Offset of the node we want to adjust
* @delta: Offset to shift the phandles of
*
* overlay_adjust_node_phandles() adds a constant to all the phandles
* of a given node. This is mainly use as part of the overlay
* application process, when we want to update all the overlay
* phandles to not conflict with the overlays of the base device tree.
*
* returns:
* 0 on success
* Negative error code on failure
*/
static int overlay_adjust_node_phandles(void *fdto, int node,
uint32_t delta)
{
int child;
int ret;
ret = overlay_phandle_add_offset(fdto, node, "phandle", delta);
if (ret && ret != -FDT_ERR_NOTFOUND)
return ret;
ret = overlay_phandle_add_offset(fdto, node, "linux,phandle", delta);
if (ret && ret != -FDT_ERR_NOTFOUND)
return ret;
fdt_for_each_subnode(child, fdto, node) {
ret = overlay_adjust_node_phandles(fdto, child, delta);
if (ret)
return ret;
}
return 0;
}
/**
* overlay_adjust_local_phandles - Adjust the phandles of a whole overlay
* @fdto: Device tree overlay blob
* @delta: Offset to shift the phandles of
*
* overlay_adjust_local_phandles() adds a constant to all the
* phandles of an overlay. This is mainly use as part of the overlay
* application process, when we want to update all the overlay
* phandles to not conflict with the overlays of the base device tree.
*
* returns:
* 0 on success
* Negative error code on failure
*/
static int overlay_adjust_local_phandles(void *fdto, uint32_t delta)
{
/*
* Start adjusting the phandles from the overlay root
*/
return overlay_adjust_node_phandles(fdto, 0, delta);
}
/**
* overlay_update_local_node_references - Adjust the overlay references
* @fdto: Device tree overlay blob
* @tree_node: Node offset of the node to operate on
* @fixup_node: Node offset of the matching local fixups node
* @delta: Offset to shift the phandles of
*
* overlay_update_local_nodes_references() update the phandles
* pointing to a node within the device tree overlay by adding a
* constant delta.
*
* This is mainly used as part of a device tree application process,
* where you want the device tree overlays phandles to not conflict
* with the ones from the base device tree before merging them.
*
* returns:
* 0 on success
* Negative error code on failure
*/
static int overlay_update_local_node_references(void *fdto,
int tree_node,
int fixup_node,
uint32_t delta)
{
int fixup_prop;
int fixup_child;
int ret;
fdt_for_each_property_offset(fixup_prop, fdto, fixup_node) {
const uint32_t *fixup_val;
const char *tree_val;
const char *name;
int fixup_len;
int tree_len;
int i;
fixup_val = fdt_getprop_by_offset(fdto, fixup_prop,
&name, &fixup_len);
if (!fixup_val)
return fixup_len;
if (fixup_len % sizeof(uint32_t))
return -FDT_ERR_BADOVERLAY;
tree_val = fdt_getprop(fdto, tree_node, name, &tree_len);
if (!tree_val) {
if (tree_len == -FDT_ERR_NOTFOUND)
return -FDT_ERR_BADOVERLAY;
return tree_len;
}
for (i = 0; i < (fixup_len / sizeof(uint32_t)); i++) {
uint32_t adj_val, poffset;
poffset = fdt32_to_cpu(fixup_val[i]);
/*
* phandles to fixup can be unaligned.
*
* Use a memcpy for the architectures that do
* not support unaligned accesses.
*/
memcpy(&adj_val, tree_val + poffset, sizeof(adj_val));
adj_val = fdt32_to_cpu(adj_val);
adj_val += delta;
adj_val = cpu_to_fdt32(adj_val);
ret = fdt_setprop_inplace_namelen_partial(fdto,
tree_node,
name,
strlen(name),
poffset,
&adj_val,
sizeof(adj_val));
if (ret == -FDT_ERR_NOSPACE)
return -FDT_ERR_BADOVERLAY;
if (ret)
return ret;
}
}
fdt_for_each_subnode(fixup_child, fdto, fixup_node) {
const char *fixup_child_name = fdt_get_name(fdto, fixup_child,
NULL);
int tree_child;
tree_child = fdt_subnode_offset(fdto, tree_node,
fixup_child_name);
if (ret == -FDT_ERR_NOTFOUND)
return -FDT_ERR_BADOVERLAY;
if (tree_child < 0)
return tree_child;
ret = overlay_update_local_node_references(fdto,
tree_child,
fixup_child,
delta);
if (ret)
return ret;
}
return 0;
}
/**
* overlay_update_local_references - Adjust the overlay references
* @fdto: Device tree overlay blob
* @delta: Offset to shift the phandles of
*
* overlay_update_local_references() update all the phandles pointing
* to a node within the device tree overlay by adding a constant
* delta to not conflict with the base overlay.
*
* This is mainly used as part of a device tree application process,
* where you want the device tree overlays phandles to not conflict
* with the ones from the base device tree before merging them.
*
* returns:
* 0 on success
* Negative error code on failure
*/
static int overlay_update_local_references(void *fdto, uint32_t delta)
{
int fixups;
fixups = fdt_path_offset(fdto, "/__local_fixups__");
if (fixups < 0) {
/* There's no local phandles to adjust, bail out */
if (fixups == -FDT_ERR_NOTFOUND)
return 0;
return fixups;
}
/*
* Update our local references from the root of the tree
*/
return overlay_update_local_node_references(fdto, 0, fixups,
delta);
}
/**
* overlay_fixup_one_phandle - Set an overlay phandle to the base one
* @fdt: Base Device Tree blob
* @fdto: Device tree overlay blob
* @symbols_off: Node offset of the symbols node in the base device tree
* @path: Path to a node holding a phandle in the overlay
* @path_len: number of path characters to consider
* @name: Name of the property holding the phandle reference in the overlay
* @name_len: number of name characters to consider
* @poffset: Offset within the overlay property where the phandle is stored
* @label: Label of the node referenced by the phandle
*
* overlay_fixup_one_phandle() resolves an overlay phandle pointing to
* a node in the base device tree.
*
* This is part of the device tree overlay application process, when
* you want all the phandles in the overlay to point to the actual
* base dt nodes.
*
* returns:
* 0 on success
* Negative error code on failure
*/
static int overlay_fixup_one_phandle(void *fdt, void *fdto,
int symbols_off,
const char *path, uint32_t path_len,
const char *name, uint32_t name_len,
int poffset, const char *label)
{
const char *symbol_path;
uint32_t phandle;
int symbol_off, fixup_off;
int prop_len;
if (symbols_off < 0)
return symbols_off;
symbol_path = fdt_getprop(fdt, symbols_off, label,
&prop_len);
if (!symbol_path)
return prop_len;
symbol_off = fdt_path_offset(fdt, symbol_path);
if (symbol_off < 0)
return symbol_off;
phandle = fdt_get_phandle(fdt, symbol_off);
if (!phandle)
return -FDT_ERR_NOTFOUND;
fixup_off = fdt_path_offset_namelen(fdto, path, path_len);
if (fixup_off == -FDT_ERR_NOTFOUND)
return -FDT_ERR_BADOVERLAY;
if (fixup_off < 0)
return fixup_off;
phandle = cpu_to_fdt32(phandle);
return fdt_setprop_inplace_namelen_partial(fdto, fixup_off,
name, name_len, poffset,
&phandle, sizeof(phandle));
};
/**
* overlay_fixup_phandle - Set an overlay phandle to the base one
* @fdt: Base Device Tree blob
* @fdto: Device tree overlay blob
* @symbols_off: Node offset of the symbols node in the base device tree
* @property: Property offset in the overlay holding the list of fixups
*
* overlay_fixup_phandle() resolves all the overlay phandles pointed
* to in a __fixups__ property, and updates them to match the phandles
* in use in the base device tree.
*
* This is part of the device tree overlay application process, when
* you want all the phandles in the overlay to point to the actual
* base dt nodes.
*
* returns:
* 0 on success
* Negative error code on failure
*/
static int overlay_fixup_phandle(void *fdt, void *fdto, int symbols_off,
int property)
{
const char *value;
const char *label;
int len;
value = fdt_getprop_by_offset(fdto, property,
&label, &len);
if (!value) {
if (len == -FDT_ERR_NOTFOUND)
return -FDT_ERR_INTERNAL;
return len;
}
do {
const char *path, *name, *fixup_end;
const char *fixup_str = value;
uint32_t path_len, name_len;
uint32_t fixup_len;
char *sep, *endptr;
int poffset, ret;
fixup_end = memchr(value, '\0', len);
if (!fixup_end)
return -FDT_ERR_BADOVERLAY;
fixup_len = fixup_end - fixup_str;
len -= fixup_len + 1;
value += fixup_len + 1;
path = fixup_str;
sep = memchr(fixup_str, ':', fixup_len);
if (!sep || *sep != ':')
return -FDT_ERR_BADOVERLAY;
path_len = sep - path;
if (path_len == (fixup_len - 1))
return -FDT_ERR_BADOVERLAY;
fixup_len -= path_len + 1;
name = sep + 1;
sep = memchr(name, ':', fixup_len);
if (!sep || *sep != ':')
return -FDT_ERR_BADOVERLAY;
name_len = sep - name;
if (!name_len)
return -FDT_ERR_BADOVERLAY;
poffset = strtoul(sep + 1, &endptr, 10);
if ((*endptr != '\0') || (endptr <= (sep + 1)))
return -FDT_ERR_BADOVERLAY;
ret = overlay_fixup_one_phandle(fdt, fdto, symbols_off,
path, path_len, name, name_len,
poffset, label);
if (ret)
return ret;
} while (len > 0);
return 0;
}
/**
* overlay_fixup_phandles - Resolve the overlay phandles to the base
* device tree
* @fdt: Base Device Tree blob
* @fdto: Device tree overlay blob
*
* overlay_fixup_phandles() resolves all the overlay phandles pointing
* to nodes in the base device tree.
*
* This is one of the steps of the device tree overlay application
* process, when you want all the phandles in the overlay to point to
* the actual base dt nodes.
*
* returns:
* 0 on success
* Negative error code on failure
*/
static int overlay_fixup_phandles(void *fdt, void *fdto)
{
int fixups_off, symbols_off;
int property;
/* We can have overlays without any fixups */
fixups_off = fdt_path_offset(fdto, "/__fixups__");
if (fixups_off == -FDT_ERR_NOTFOUND)
return 0; /* nothing to do */
if (fixups_off < 0)
return fixups_off;
/* And base DTs without symbols */
symbols_off = fdt_path_offset(fdt, "/__symbols__");
if ((symbols_off < 0 && (symbols_off != -FDT_ERR_NOTFOUND)))
return symbols_off;
fdt_for_each_property_offset(property, fdto, fixups_off) {
int ret;
ret = overlay_fixup_phandle(fdt, fdto, symbols_off, property);
if (ret)
return ret;
}
return 0;
}
/**
* overlay_apply_node - Merges a node into the base device tree
* @fdt: Base Device Tree blob
* @target: Node offset in the base device tree to apply the fragment to
* @fdto: Device tree overlay blob
* @node: Node offset in the overlay holding the changes to merge
*
* overlay_apply_node() merges a node into a target base device tree
* node pointed.
*
* This is part of the final step in the device tree overlay
* application process, when all the phandles have been adjusted and
* resolved and you just have to merge overlay into the base device
* tree.
*
* returns:
* 0 on success
* Negative error code on failure
*/
static int overlay_apply_node(void *fdt, int target,
void *fdto, int node)
{
int property;
int subnode;
fdt_for_each_property_offset(property, fdto, node) {
const char *name;
const void *prop;
int prop_len;
int ret;
prop = fdt_getprop_by_offset(fdto, property, &name,
&prop_len);
if (prop_len == -FDT_ERR_NOTFOUND)
return -FDT_ERR_INTERNAL;
if (prop_len < 0)
return prop_len;
ret = fdt_setprop(fdt, target, name, prop, prop_len);
if (ret)
return ret;
}
fdt_for_each_subnode(subnode, fdto, node) {
const char *name = fdt_get_name(fdto, subnode, NULL);
int nnode;
int ret;
nnode = fdt_add_subnode(fdt, target, name);
if (nnode == -FDT_ERR_EXISTS) {
nnode = fdt_subnode_offset(fdt, target, name);
if (nnode == -FDT_ERR_NOTFOUND)
return -FDT_ERR_INTERNAL;
}
if (nnode < 0)
return nnode;
ret = overlay_apply_node(fdt, nnode, fdto, subnode);
if (ret)
return ret;
}
return 0;
}
/**
* overlay_merge - Merge an overlay into its base device tree
* @fdt: Base Device Tree blob
* @fdto: Device tree overlay blob
*
* overlay_merge() merges an overlay into its base device tree.
*
* This is the final step in the device tree overlay application
* process, when all the phandles have been adjusted and resolved and
* you just have to merge overlay into the base device tree.
*
* returns:
* 0 on success
* Negative error code on failure
*/
static int overlay_merge(void *fdt, void *fdto)
{
int fragment;
fdt_for_each_subnode(fragment, fdto, 0) {
int overlay;
int target;
int ret;
/*
* Each fragments will have an __overlay__ node. If
* they don't, it's not supposed to be merged
*/
overlay = fdt_subnode_offset(fdto, fragment, "__overlay__");
if (overlay == -FDT_ERR_NOTFOUND)
continue;
if (overlay < 0)
return overlay;
target = overlay_get_target(fdt, fdto, fragment);
if (target < 0)
return target;
ret = overlay_apply_node(fdt, target, fdto, overlay);
if (ret)
return ret;
}
return 0;
}
int fdt_overlay_apply(void *fdt, void *fdto)
{
uint32_t delta = fdt_get_max_phandle(fdt);
int ret;
FDT_CHECK_HEADER(fdt);
FDT_CHECK_HEADER(fdto);
ret = overlay_adjust_local_phandles(fdto, delta);
if (ret)
goto err;
ret = overlay_update_local_references(fdto, delta);
if (ret)
goto err;
ret = overlay_fixup_phandles(fdt, fdto);
if (ret)
goto err;
ret = overlay_merge(fdt, fdto);
if (ret)
goto err;
/*
* The overlay has been damaged, erase its magic.
*/
fdt_set_magic(fdto, ~0);
return 0;
err:
/*
* The overlay might have been damaged, erase its magic.
*/
fdt_set_magic(fdto, ~0);
/*
* The base device tree might have been damaged, erase its
* magic.
*/
fdt_set_magic(fdt, ~0);
return ret;
}

154
contrib/dtc/libfdt/fdt_ro.c
View File

@ -88,6 +88,32 @@ static int _fdt_string_eq(const void *fdt, int stroffset,
return (strlen(p) == len) && (memcmp(p, s, len) == 0);
}
uint32_t fdt_get_max_phandle(const void *fdt)
{
uint32_t max_phandle = 0;
int offset;
for (offset = fdt_next_node(fdt, -1, NULL);;
offset = fdt_next_node(fdt, offset, NULL)) {
uint32_t phandle;
if (offset == -FDT_ERR_NOTFOUND)
return max_phandle;
if (offset < 0)
return (uint32_t)-1;
phandle = fdt_get_phandle(fdt, offset);
if (phandle == (uint32_t)-1)
continue;
if (phandle > max_phandle)
max_phandle = phandle;
}
return 0;
}
int fdt_get_mem_rsv(const void *fdt, int n, uint64_t *address, uint64_t *size)
{
FDT_CHECK_HEADER(fdt);
@ -154,9 +180,9 @@ int fdt_subnode_offset(const void *fdt, int parentoffset,
return fdt_subnode_offset_namelen(fdt, parentoffset, name, strlen(name));
}
int fdt_path_offset(const void *fdt, const char *path)
int fdt_path_offset_namelen(const void *fdt, const char *path, int namelen)
{
const char *end = path + strlen(path);
const char *end = path + namelen;
const char *p = path;
int offset = 0;
@ -164,7 +190,7 @@ int fdt_path_offset(const void *fdt, const char *path)
/* see if we have an alias */
if (*path != '/') {
const char *q = strchr(path, '/');
const char *q = memchr(path, '/', end - p);
if (!q)
q = end;
@ -177,14 +203,15 @@ int fdt_path_offset(const void *fdt, const char *path)
p = q;
}
while (*p) {
while (p < end) {
const char *q;
while (*p == '/')
while (*p == '/') {
p++;
if (! *p)
return offset;
q = strchr(p, '/');
if (p == end)
return offset;
}
q = memchr(p, '/', end - p);
if (! q)
q = end;
@ -198,6 +225,11 @@ int fdt_path_offset(const void *fdt, const char *path)
return offset;
}
int fdt_path_offset(const void *fdt, const char *path)
{
return fdt_path_offset_namelen(fdt, path, strlen(path));
}
const char *fdt_get_name(const void *fdt, int nodeoffset, int *len)
{
const struct fdt_node_header *nh = _fdt_offset_ptr(fdt, nodeoffset);
@ -532,6 +564,106 @@ int fdt_stringlist_contains(const char *strlist, int listlen, const char *str)
return 0;
}
int fdt_stringlist_count(const void *fdt, int nodeoffset, const char *property)
{
const char *list, *end;
int length, count = 0;
list = fdt_getprop(fdt, nodeoffset, property, &length);
if (!list)
return length;
end = list + length;
while (list < end) {
length = strnlen(list, end - list) + 1;
/* Abort if the last string isn't properly NUL-terminated. */
if (list + length > end)
return -FDT_ERR_BADVALUE;
list += length;
count++;
}
return count;
}
int fdt_stringlist_search(const void *fdt, int nodeoffset, const char *property,
const char *string)
{
int length, len, idx = 0;
const char *list, *end;
list = fdt_getprop(fdt, nodeoffset, property, &length);
if (!list)
return length;
len = strlen(string) + 1;
end = list + length;
while (list < end) {
length = strnlen(list, end - list) + 1;
/* Abort if the last string isn't properly NUL-terminated. */
if (list + length > end)
return -FDT_ERR_BADVALUE;
if (length == len && memcmp(list, string, length) == 0)
return idx;
list += length;
idx++;
}
return -FDT_ERR_NOTFOUND;
}
const char *fdt_stringlist_get(const void *fdt, int nodeoffset,
const char *property, int idx,
int *lenp)
{
const char *list, *end;
int length;
list = fdt_getprop(fdt, nodeoffset, property, &length);
if (!list) {
if (lenp)
*lenp = length;
return NULL;
}
end = list + length;
while (list < end) {
length = strnlen(list, end - list) + 1;
/* Abort if the last string isn't properly NUL-terminated. */
if (list + length > end) {
if (lenp)
*lenp = -FDT_ERR_BADVALUE;
return NULL;
}
if (idx == 0) {
if (lenp)
*lenp = length - 1;
return list;
}
list += length;
idx--;
}
if (lenp)
*lenp = -FDT_ERR_NOTFOUND;
return NULL;
}
int fdt_node_check_compatible(const void *fdt, int nodeoffset,
const char *compatible)
{
@ -541,10 +673,8 @@ int fdt_node_check_compatible(const void *fdt, int nodeoffset,
prop = fdt_getprop(fdt, nodeoffset, "compatible", &len);
if (!prop)
return len;
if (fdt_stringlist_contains(prop, len, compatible))
return 0;
else
return 1;
return !fdt_stringlist_contains(prop, len, compatible);
}
int fdt_node_offset_by_compatible(const void *fdt, int startoffset,

17
contrib/dtc/libfdt/fdt_rw.c
View File

@ -84,9 +84,9 @@ static int _fdt_rw_check_header(void *fdt)
#define FDT_RW_CHECK_HEADER(fdt) \
{ \
int err; \
if ((err = _fdt_rw_check_header(fdt)) != 0) \
return err; \
int __err; \
if ((__err = _fdt_rw_check_header(fdt)) != 0) \
return __err; \
}
static inline int _fdt_data_size(void *fdt)
@ -101,6 +101,8 @@ static int _fdt_splice(void *fdt, void *splicepoint, int oldlen, int newlen)
if (((p + oldlen) < p) || ((p + oldlen) > end))
return -FDT_ERR_BADOFFSET;
if ((p < (char *)fdt) || ((end - oldlen + newlen) < (char *)fdt))
return -FDT_ERR_BADOFFSET;
if ((end - oldlen + newlen) > ((char *)fdt + fdt_totalsize(fdt)))
return -FDT_ERR_NOSPACE;
memmove(p + newlen, p + oldlen, end - p - oldlen);
@ -189,17 +191,13 @@ int fdt_add_mem_rsv(void *fdt, uint64_t address, uint64_t size)
int fdt_del_mem_rsv(void *fdt, int n)
{
struct fdt_reserve_entry *re = _fdt_mem_rsv_w(fdt, n);
int err;
FDT_RW_CHECK_HEADER(fdt);
if (n >= fdt_num_mem_rsv(fdt))
return -FDT_ERR_NOTFOUND;
err = _fdt_splice_mem_rsv(fdt, re, 1, 0);
if (err)
return err;
return 0;
return _fdt_splice_mem_rsv(fdt, re, 1, 0);
}
static int _fdt_resize_property(void *fdt, int nodeoffset, const char *name,
@ -285,7 +283,8 @@ int fdt_setprop(void *fdt, int nodeoffset, const char *name,
if (err)
return err;
memcpy(prop->data, val, len);
if (len)
memcpy(prop->data, val, len);
return 0;
}

6
contrib/dtc/libfdt/fdt_strerror.c
View File

@ -69,6 +69,7 @@ static struct fdt_errtabent fdt_errtable[] = {
FDT_ERRTABENT(FDT_ERR_BADOFFSET),
FDT_ERRTABENT(FDT_ERR_BADPATH),
FDT_ERRTABENT(FDT_ERR_BADPHANDLE),
FDT_ERRTABENT(FDT_ERR_BADSTATE),
FDT_ERRTABENT(FDT_ERR_TRUNCATED),
@ -76,6 +77,11 @@ static struct fdt_errtabent fdt_errtable[] = {
FDT_ERRTABENT(FDT_ERR_BADVERSION),
FDT_ERRTABENT(FDT_ERR_BADSTRUCTURE),
FDT_ERRTABENT(FDT_ERR_BADLAYOUT),
FDT_ERRTABENT(FDT_ERR_INTERNAL),
FDT_ERRTABENT(FDT_ERR_BADNCELLS),
FDT_ERRTABENT(FDT_ERR_BADVALUE),
FDT_ERRTABENT(FDT_ERR_BADOVERLAY),
FDT_ERRTABENT(FDT_ERR_NOPHANDLES),
};
#define FDT_ERRTABSIZE (sizeof(fdt_errtable) / sizeof(fdt_errtable[0]))

31
contrib/dtc/libfdt/fdt_wip.c
View File

@ -55,21 +55,42 @@
#include "libfdt_internal.h"
int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,
const void *val, int len)
int fdt_setprop_inplace_namelen_partial(void *fdt, int nodeoffset,
const char *name, int namelen,
uint32_t idx, const void *val,
int len)
{
void *propval;
int proplen;
propval = fdt_getprop_w(fdt, nodeoffset, name, &proplen);
propval = fdt_getprop_namelen_w(fdt, nodeoffset, name, namelen,
&proplen);
if (!propval)
return proplen;
if (proplen < (len + idx))
return -FDT_ERR_NOSPACE;
memcpy((char *)propval + idx, val, len);
return 0;
}
int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,
const void *val, int len)
{
const void *propval;
int proplen;
propval = fdt_getprop(fdt, nodeoffset, name, &proplen);
if (! propval)
return proplen;
if (proplen != len)
return -FDT_ERR_NOSPACE;
memcpy(propval, val, len);
return 0;
return fdt_setprop_inplace_namelen_partial(fdt, nodeoffset, name,
strlen(name), 0,
val, len);
}
static void _fdt_nop_region(void *start, int len)

378
contrib/dtc/libfdt/libfdt.h
View File

@ -61,7 +61,7 @@
#define FDT_ERR_NOTFOUND 1
/* FDT_ERR_NOTFOUND: The requested node or property does not exist */
#define FDT_ERR_EXISTS 2
/* FDT_ERR_EXISTS: Attemped to create a node or property which
/* FDT_ERR_EXISTS: Attempted to create a node or property which
* already exists */
#define FDT_ERR_NOSPACE 3
/* FDT_ERR_NOSPACE: Operation needed to expand the device
@ -79,8 +79,10 @@
* (e.g. missing a leading / for a function which requires an
* absolute path) */
#define FDT_ERR_BADPHANDLE 6
/* FDT_ERR_BADPHANDLE: Function was passed an invalid phandle
* value. phandle values of 0 and -1 are not permitted. */
/* FDT_ERR_BADPHANDLE: Function was passed an invalid phandle.
* This can be caused either by an invalid phandle property
* length, or the phandle value was either 0 or -1, which are
* not permitted. */
#define FDT_ERR_BADSTATE 7
/* FDT_ERR_BADSTATE: Function was passed an incomplete device
* tree created by the sequential-write functions, which is
@ -116,7 +118,26 @@
* Should never be returned, if it is, it indicates a bug in
* libfdt itself. */
#define FDT_ERR_MAX 13
/* Errors in device tree content */
#define FDT_ERR_BADNCELLS 14
/* FDT_ERR_BADNCELLS: Device tree has a #address-cells, #size-cells
* or similar property with a bad format or value */
#define FDT_ERR_BADVALUE 15
/* FDT_ERR_BADVALUE: Device tree has a property with an unexpected
* value. For example: a property expected to contain a string list
* is not NUL-terminated within the length of its value. */
#define FDT_ERR_BADOVERLAY 16
/* FDT_ERR_BADOVERLAY: The device tree overlay, while
* correctly structured, cannot be applied due to some
* unexpected or missing value, property or node. */
#define FDT_ERR_NOPHANDLES 17
/* FDT_ERR_NOPHANDLES: The device tree doesn't have any
* phandle available anymore without causing an overflow */
#define FDT_ERR_MAX 17
/**********************************************************************/
/* Low-level functions (you probably don't need these) */
@ -158,27 +179,55 @@ int fdt_first_subnode(const void *fdt, int offset);
*/
int fdt_next_subnode(const void *fdt, int offset);
/**
* fdt_for_each_subnode - iterate over all subnodes of a parent
*
* @node: child node (int, lvalue)
* @fdt: FDT blob (const void *)
* @parent: parent node (int)
*
* This is actually a wrapper around a for loop and would be used like so:
*
* fdt_for_each_subnode(node, fdt, parent) {
* Use node
* ...
* }
*
* if ((node < 0) && (node != -FDT_ERR_NOT_FOUND)) {
* Error handling
* }
*
* Note that this is implemented as a macro and @node is used as
* iterator in the loop. The parent variable be constant or even a
* literal.
*
*/
#define fdt_for_each_subnode(node, fdt, parent) \
for (node = fdt_first_subnode(fdt, parent); \
node >= 0; \
node = fdt_next_subnode(fdt, node))
/**********************************************************************/
/* General functions */
/**********************************************************************/
#define fdt_get_header(fdt, field) \
(fdt32_to_cpu(((const struct fdt_header *)(fdt))->field))
#define fdt_magic(fdt) (fdt_get_header(fdt, magic))
#define fdt_magic(fdt) (fdt_get_header(fdt, magic))
#define fdt_totalsize(fdt) (fdt_get_header(fdt, totalsize))
#define fdt_off_dt_struct(fdt) (fdt_get_header(fdt, off_dt_struct))
#define fdt_off_dt_strings(fdt) (fdt_get_header(fdt, off_dt_strings))
#define fdt_off_mem_rsvmap(fdt) (fdt_get_header(fdt, off_mem_rsvmap))
#define fdt_version(fdt) (fdt_get_header(fdt, version))
#define fdt_last_comp_version(fdt) (fdt_get_header(fdt, last_comp_version))
#define fdt_boot_cpuid_phys(fdt) (fdt_get_header(fdt, boot_cpuid_phys))
#define fdt_size_dt_strings(fdt) (fdt_get_header(fdt, size_dt_strings))
#define fdt_last_comp_version(fdt) (fdt_get_header(fdt, last_comp_version))
#define fdt_boot_cpuid_phys(fdt) (fdt_get_header(fdt, boot_cpuid_phys))
#define fdt_size_dt_strings(fdt) (fdt_get_header(fdt, size_dt_strings))
#define fdt_size_dt_struct(fdt) (fdt_get_header(fdt, size_dt_struct))
#define __fdt_set_hdr(name) \
static inline void fdt_set_##name(void *fdt, uint32_t val) \
{ \
struct fdt_header *fdth = (struct fdt_header*)fdt; \
struct fdt_header *fdth = (struct fdt_header *)fdt; \
fdth->name = cpu_to_fdt32(val); \
}
__fdt_set_hdr(magic);
@ -248,6 +297,21 @@ int fdt_move(const void *fdt, void *buf, int bufsize);
*/
const char *fdt_string(const void *fdt, int stroffset);
/**
* fdt_get_max_phandle - retrieves the highest phandle in a tree
* @fdt: pointer to the device tree blob
*
* fdt_get_max_phandle retrieves the highest phandle in the given
* device tree. This will ignore badly formatted phandles, or phandles
* with a value of 0 or -1.
*
* returns:
* the highest phandle on success
* 0, if no phandle was found in the device tree
* -1, if an error occurred
*/
uint32_t fdt_get_max_phandle(const void *fdt);
/**
* fdt_num_mem_rsv - retrieve the number of memory reserve map entries
* @fdt: pointer to the device tree blob
@ -308,8 +372,9 @@ int fdt_subnode_offset_namelen(const void *fdt, int parentoffset,
* returns:
* structure block offset of the requested subnode (>=0), on success
* -FDT_ERR_NOTFOUND, if the requested subnode does not exist
* -FDT_ERR_BADOFFSET, if parentoffset did not point to an FDT_BEGIN_NODE tag
* -FDT_ERR_BADMAGIC,
* -FDT_ERR_BADOFFSET, if parentoffset did not point to an FDT_BEGIN_NODE
* tag
* -FDT_ERR_BADMAGIC,
* -FDT_ERR_BADVERSION,
* -FDT_ERR_BADSTATE,
* -FDT_ERR_BADSTRUCTURE,
@ -317,6 +382,17 @@ int fdt_subnode_offset_namelen(const void *fdt, int parentoffset,
*/
int fdt_subnode_offset(const void *fdt, int parentoffset, const char *name);
/**
* fdt_path_offset_namelen - find a tree node by its full path
* @fdt: pointer to the device tree blob
* @path: full path of the node to locate
* @namelen: number of characters of path to consider
*
* Identical to fdt_path_offset(), but only consider the first namelen
* characters of path as the path name.
*/
int fdt_path_offset_namelen(const void *fdt, const char *path, int namelen);
/**
* fdt_path_offset - find a tree node by its full path
* @fdt: pointer to the device tree blob
@ -330,7 +406,8 @@ int fdt_subnode_offset(const void *fdt, int parentoffset, const char *name);
* address).
*
* returns:
* structure block offset of the node with the requested path (>=0), on success
* structure block offset of the node with the requested path (>=0), on
* success
* -FDT_ERR_BADPATH, given path does not begin with '/' or is invalid
* -FDT_ERR_NOTFOUND, if the requested node does not exist
* -FDT_ERR_BADMAGIC,
@ -354,10 +431,12 @@ int fdt_path_offset(const void *fdt, const char *path);
*
* returns:
* pointer to the node's name, on success
* If lenp is non-NULL, *lenp contains the length of that name (>=0)
* If lenp is non-NULL, *lenp contains the length of that name
* (>=0)
* NULL, on error
* if lenp is non-NULL *lenp contains an error code (<0):
* -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
* -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE
* tag
* -FDT_ERR_BADMAGIC,
* -FDT_ERR_BADVERSION,
* -FDT_ERR_BADSTATE, standard meanings
@ -405,6 +484,33 @@ int fdt_first_property_offset(const void *fdt, int nodeoffset);
*/
int fdt_next_property_offset(const void *fdt, int offset);
/**
* fdt_for_each_property_offset - iterate over all properties of a node
*
* @property_offset: property offset (int, lvalue)
* @fdt: FDT blob (const void *)
* @node: node offset (int)
*
* This is actually a wrapper around a for loop and would be used like so:
*
* fdt_for_each_property_offset(property, fdt, node) {
* Use property
* ...
* }
*
* if ((property < 0) && (property != -FDT_ERR_NOT_FOUND)) {
* Error handling
* }
*
* Note that this is implemented as a macro and property is used as
* iterator in the loop. The node variable can be constant or even a
* literal.
*/
#define fdt_for_each_property_offset(property, fdt, node) \
for (property = fdt_first_property_offset(fdt, node); \
property >= 0; \
property = fdt_next_property_offset(fdt, property))
/**
* fdt_get_property_by_offset - retrieve the property at a given offset
* @fdt: pointer to the device tree blob
@ -441,8 +547,8 @@ const struct fdt_property *fdt_get_property_by_offset(const void *fdt,
* @namelen: number of characters of name to consider
* @lenp: pointer to an integer variable (will be overwritten) or NULL
*
* Identical to fdt_get_property_namelen(), but only examine the first
* namelen characters of name for matching the property name.
* Identical to fdt_get_property(), but only examine the first namelen
* characters of name for matching the property name.
*/
const struct fdt_property *fdt_get_property_namelen(const void *fdt,
int nodeoffset,
@ -469,7 +575,8 @@ const struct fdt_property *fdt_get_property_namelen(const void *fdt,
* NULL, on error
* if lenp is non-NULL, *lenp contains an error code (<0):
* -FDT_ERR_NOTFOUND, node does not have named property
* -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
* -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE
* tag
* -FDT_ERR_BADMAGIC,
* -FDT_ERR_BADVERSION,
* -FDT_ERR_BADSTATE,
@ -533,6 +640,13 @@ const void *fdt_getprop_by_offset(const void *fdt, int offset,
*/
const void *fdt_getprop_namelen(const void *fdt, int nodeoffset,
const char *name, int namelen, int *lenp);
static inline void *fdt_getprop_namelen_w(void *fdt, int nodeoffset,
const char *name, int namelen,
int *lenp)
{
return (void *)(uintptr_t)fdt_getprop_namelen(fdt, nodeoffset, name,
namelen, lenp);
}
/**
* fdt_getprop - retrieve the value of a given property
@ -554,7 +668,8 @@ const void *fdt_getprop_namelen(const void *fdt, int nodeoffset,
* NULL, on error
* if lenp is non-NULL, *lenp contains an error code (<0):
* -FDT_ERR_NOTFOUND, node does not have named property
* -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
* -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE
* tag
* -FDT_ERR_BADMAGIC,
* -FDT_ERR_BADVERSION,
* -FDT_ERR_BADSTATE,
@ -596,7 +711,7 @@ const char *fdt_get_alias_namelen(const void *fdt,
const char *name, int namelen);
/**
* fdt_get_alias - retreive the path referenced by a given alias
* fdt_get_alias - retrieve the path referenced by a given alias
* @fdt: pointer to the device tree blob
* @name: name of the alias th look up
*
@ -626,7 +741,7 @@ const char *fdt_get_alias(const void *fdt, const char *name);
* 0, on success
* buf contains the absolute path of the node at
* nodeoffset, as a NUL-terminated string.
* -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
* -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
* -FDT_ERR_NOSPACE, the path of the given node is longer than (bufsize-1)
* characters and will not fit in the given buffer.
* -FDT_ERR_BADMAGIC,
@ -656,11 +771,11 @@ int fdt_get_path(const void *fdt, int nodeoffset, char *buf, int buflen);
* structure from the start to nodeoffset.
*
* returns:
* structure block offset of the node at node offset's ancestor
* of depth supernodedepth (>=0), on success
* -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
* -FDT_ERR_NOTFOUND, supernodedepth was greater than the depth of nodeoffset
* -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
* -FDT_ERR_NOTFOUND, supernodedepth was greater than the depth of
* nodeoffset
* -FDT_ERR_BADMAGIC,
* -FDT_ERR_BADVERSION,
* -FDT_ERR_BADSTATE,
@ -682,7 +797,7 @@ int fdt_supernode_atdepth_offset(const void *fdt, int nodeoffset,
*
* returns:
* depth of the node at nodeoffset (>=0), on success
* -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
* -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
* -FDT_ERR_BADMAGIC,
* -FDT_ERR_BADVERSION,
* -FDT_ERR_BADSTATE,
@ -705,7 +820,7 @@ int fdt_node_depth(const void *fdt, int nodeoffset);
* returns:
* structure block offset of the parent of the node at nodeoffset
* (>=0), on success
* -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
* -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
* -FDT_ERR_BADMAGIC,
* -FDT_ERR_BADVERSION,
* -FDT_ERR_BADSTATE,
@ -745,7 +860,7 @@ int fdt_parent_offset(const void *fdt, int nodeoffset);
* on success
* -FDT_ERR_NOTFOUND, no node matching the criterion exists in the
* tree after startoffset
* -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
* -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
* -FDT_ERR_BADMAGIC,
* -FDT_ERR_BADVERSION,
* -FDT_ERR_BADSTATE,
@ -792,7 +907,7 @@ int fdt_node_offset_by_phandle(const void *fdt, uint32_t phandle);
* 1, if the node has a 'compatible' property, but it does not list
* the given string
* -FDT_ERR_NOTFOUND, if the given node has no 'compatible' property
* -FDT_ERR_BADOFFSET, if nodeoffset does not refer to a BEGIN_NODE tag
* -FDT_ERR_BADOFFSET, if nodeoffset does not refer to a BEGIN_NODE tag
* -FDT_ERR_BADMAGIC,
* -FDT_ERR_BADVERSION,
* -FDT_ERR_BADSTATE,
@ -829,7 +944,7 @@ int fdt_node_check_compatible(const void *fdt, int nodeoffset,
* on success
* -FDT_ERR_NOTFOUND, no node matching the criterion exists in the
* tree after startoffset
* -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
* -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
* -FDT_ERR_BADMAGIC,
* -FDT_ERR_BADVERSION,
* -FDT_ERR_BADSTATE,
@ -852,10 +967,150 @@ int fdt_node_offset_by_compatible(const void *fdt, int startoffset,
*/
int fdt_stringlist_contains(const char *strlist, int listlen, const char *str);
/**
* fdt_stringlist_count - count the number of strings in a string list
* @fdt: pointer to the device tree blob
* @nodeoffset: offset of a tree node
* @property: name of the property containing the string list
* @return:
* the number of strings in the given property
* -FDT_ERR_BADVALUE if the property value is not NUL-terminated
* -FDT_ERR_NOTFOUND if the property does not exist
*/
int fdt_stringlist_count(const void *fdt, int nodeoffset, const char *property);
/**
* fdt_stringlist_search - find a string in a string list and return its index
* @fdt: pointer to the device tree blob
* @nodeoffset: offset of a tree node
* @property: name of the property containing the string list
* @string: string to look up in the string list
*
* Note that it is possible for this function to succeed on property values
* that are not NUL-terminated. That's because the function will stop after
* finding the first occurrence of @string. This can for example happen with
* small-valued cell properties, such as #address-cells, when searching for
* the empty string.
*
* @return:
* the index of the string in the list of strings
* -FDT_ERR_BADVALUE if the property value is not NUL-terminated
* -FDT_ERR_NOTFOUND if the property does not exist or does not contain
* the given string
*/
int fdt_stringlist_search(const void *fdt, int nodeoffset, const char *property,
const char *string);
/**
* fdt_stringlist_get() - obtain the string at a given index in a string list
* @fdt: pointer to the device tree blob
* @nodeoffset: offset of a tree node
* @property: name of the property containing the string list
* @index: index of the string to return
* @lenp: return location for the string length or an error code on failure
*
* Note that this will successfully extract strings from properties with
* non-NUL-terminated values. For example on small-valued cell properties
* this function will return the empty string.
*
* If non-NULL, the length of the string (on success) or a negative error-code
* (on failure) will be stored in the integer pointer to by lenp.
*
* @return:
* A pointer to the string at the given index in the string list or NULL on
* failure. On success the length of the string will be stored in the memory
* location pointed to by the lenp parameter, if non-NULL. On failure one of
* the following negative error codes will be returned in the lenp parameter
* (if non-NULL):
* -FDT_ERR_BADVALUE if the property value is not NUL-terminated
* -FDT_ERR_NOTFOUND if the property does not exist
*/
const char *fdt_stringlist_get(const void *fdt, int nodeoffset,
const char *property, int index,
int *lenp);
/**********************************************************************/
/* Read-only functions (addressing related) */
/**********************************************************************/
/**
* FDT_MAX_NCELLS - maximum value for #address-cells and #size-cells
*
* This is the maximum value for #address-cells, #size-cells and
* similar properties that will be processed by libfdt. IEE1275
* requires that OF implementations handle values up to 4.
* Implementations may support larger values, but in practice higher
* values aren't used.
*/
#define FDT_MAX_NCELLS 4
/**
* fdt_address_cells - retrieve address size for a bus represented in the tree
* @fdt: pointer to the device tree blob
* @nodeoffset: offset of the node to find the address size for
*
* When the node has a valid #address-cells property, returns its value.
*
* returns:
* 0 <= n < FDT_MAX_NCELLS, on success
* 2, if the node has no #address-cells property
* -FDT_ERR_BADNCELLS, if the node has a badly formatted or invalid
* #address-cells property
* -FDT_ERR_BADMAGIC,
* -FDT_ERR_BADVERSION,
* -FDT_ERR_BADSTATE,
* -FDT_ERR_BADSTRUCTURE,
* -FDT_ERR_TRUNCATED, standard meanings
*/
int fdt_address_cells(const void *fdt, int nodeoffset);
/**
* fdt_size_cells - retrieve address range size for a bus represented in the
* tree
* @fdt: pointer to the device tree blob
* @nodeoffset: offset of the node to find the address range size for
*
* When the node has a valid #size-cells property, returns its value.
*
* returns:
* 0 <= n < FDT_MAX_NCELLS, on success
* 2, if the node has no #address-cells property
* -FDT_ERR_BADNCELLS, if the node has a badly formatted or invalid
* #size-cells property
* -FDT_ERR_BADMAGIC,
* -FDT_ERR_BADVERSION,
* -FDT_ERR_BADSTATE,
* -FDT_ERR_BADSTRUCTURE,
* -FDT_ERR_TRUNCATED, standard meanings
*/
int fdt_size_cells(const void *fdt, int nodeoffset);
/**********************************************************************/
/* Write-in-place functions */
/**********************************************************************/
/**
* fdt_setprop_inplace_namelen_partial - change a property's value,
* but not its size
* @fdt: pointer to the device tree blob
* @nodeoffset: offset of the node whose property to change
* @name: name of the property to change
* @namelen: number of characters of name to consider
* @idx: index of the property to change in the array
* @val: pointer to data to replace the property value with
* @len: length of the property value
*
* Identical to fdt_setprop_inplace(), but modifies the given property
* starting from the given index, and using only the first characters
* of the name. It is useful when you want to manipulate only one value of
* an array and you have a string that doesn't end with \0.
*/
int fdt_setprop_inplace_namelen_partial(void *fdt, int nodeoffset,
const char *name, int namelen,
uint32_t idx, const void *val,
int len);
/**
* fdt_setprop_inplace - change a property's value, but not its size
* @fdt: pointer to the device tree blob
@ -1272,6 +1527,36 @@ static inline int fdt_setprop_cell(void *fdt, int nodeoffset, const char *name,
#define fdt_setprop_string(fdt, nodeoffset, name, str) \
fdt_setprop((fdt), (nodeoffset), (name), (str), strlen(str)+1)
/**
* fdt_setprop_empty - set a property to an empty value
* @fdt: pointer to the device tree blob
* @nodeoffset: offset of the node whose property to change
* @name: name of the property to change
*
* fdt_setprop_empty() sets the value of the named property in the
* given node to an empty (zero length) value, or creates a new empty
* property if it does not already exist.
*
* This function may insert or delete data from the blob, and will
* therefore change the offsets of some existing nodes.
*
* returns:
* 0, on success
* -FDT_ERR_NOSPACE, there is insufficient free space in the blob to
* contain the new property value
* -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
* -FDT_ERR_BADLAYOUT,
* -FDT_ERR_BADMAGIC,
* -FDT_ERR_BADVERSION,
* -FDT_ERR_BADSTATE,
* -FDT_ERR_BADSTRUCTURE,
* -FDT_ERR_BADLAYOUT,
* -FDT_ERR_TRUNCATED, standard meanings
*/
#define fdt_setprop_empty(fdt, nodeoffset, name) \
fdt_setprop((fdt), (nodeoffset), (name), NULL, 0)
/**
* fdt_appendprop - append to or create a property
* @fdt: pointer to the device tree blob
@ -1466,9 +1751,11 @@ int fdt_add_subnode_namelen(void *fdt, int parentoffset,
* change the offsets of some existing nodes.
* returns:
* structure block offset of the created nodeequested subnode (>=0), on success
* structure block offset of the created nodeequested subnode (>=0), on
* success
* -FDT_ERR_NOTFOUND, if the requested subnode does not exist
* -FDT_ERR_BADOFFSET, if parentoffset did not point to an FDT_BEGIN_NODE tag
* -FDT_ERR_BADOFFSET, if parentoffset did not point to an FDT_BEGIN_NODE
* tag
* -FDT_ERR_EXISTS, if the node at parentoffset already has a subnode of
* the given name
* -FDT_ERR_NOSPACE, if there is insufficient free space in the
@ -1506,6 +1793,37 @@ int fdt_add_subnode(void *fdt, int parentoffset, const char *name);
*/
int fdt_del_node(void *fdt, int nodeoffset);
/**
* fdt_overlay_apply - Applies a DT overlay on a base DT
* @fdt: pointer to the base device tree blob
* @fdto: pointer to the device tree overlay blob
*
* fdt_overlay_apply() will apply the given device tree overlay on the
* given base device tree.
*
* Expect the base device tree to be modified, even if the function
* returns an error.
*
* returns:
* 0, on success
* -FDT_ERR_NOSPACE, there's not enough space in the base device tree
* -FDT_ERR_NOTFOUND, the overlay points to some inexistant nodes or
* properties in the base DT
* -FDT_ERR_BADPHANDLE,
* -FDT_ERR_BADOVERLAY,
* -FDT_ERR_NOPHANDLES,
* -FDT_ERR_INTERNAL,
* -FDT_ERR_BADLAYOUT,
* -FDT_ERR_BADMAGIC,
* -FDT_ERR_BADOFFSET,
* -FDT_ERR_BADPATH,
* -FDT_ERR_BADVERSION,
* -FDT_ERR_BADSTRUCTURE,
* -FDT_ERR_BADSTATE,
* -FDT_ERR_TRUNCATED, standard meanings
*/
int fdt_overlay_apply(void *fdt, void *fdto);
/**********************************************************************/
/* Debugging / informational functions */
/**********************************************************************/

1
contrib/dtc/libfdt/libfdt_env.h
View File

@ -54,6 +54,7 @@
#include <stddef.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#ifdef __CHECKER__

6
contrib/dtc/libfdt/libfdt_internal.h
View File

@ -57,9 +57,9 @@
#define FDT_CHECK_HEADER(fdt) \
{ \
int err; \
if ((err = fdt_check_header(fdt)) != 0) \
return err; \
int __err; \
if ((__err = fdt_check_header(fdt)) != 0) \
return __err; \
}
int _fdt_check_node_offset(const void *fdt, int offset);

8
contrib/dtc/libfdt/version.lds
View File

@ -8,6 +8,7 @@ LIBFDT_1.2 {
fdt_get_mem_rsv;
fdt_subnode_offset_namelen;
fdt_subnode_offset;
fdt_path_offset_namelen;
fdt_path_offset;
fdt_get_name;
fdt_get_property_namelen;
@ -54,6 +55,13 @@ LIBFDT_1.2 {
fdt_get_property_by_offset;
fdt_getprop_by_offset;
fdt_next_property_offset;
fdt_first_subnode;
fdt_next_subnode;
fdt_address_cells;
fdt_size_cells;
fdt_stringlist_contains;
fdt_resize;
fdt_overlay_apply;
local:
*;

309
contrib/dtc/livetree.c
View File

@ -204,7 +204,7 @@ struct node *merge_nodes(struct node *old_node, struct node *new_node)
}
}
/* if no collision occured, add child to the old node. */
/* if no collision occurred, add child to the old node. */
if (new_child)
add_child(old_node, new_child);
}
@ -242,7 +242,7 @@ void delete_property_by_name(struct node *node, char *name)
struct property *prop = node->proplist;
while (prop) {
if (!strcmp(prop->name, name)) {
if (streq(prop->name, name)) {
delete_property(prop);
return;
}
@ -275,7 +275,7 @@ void delete_node_by_name(struct node *parent, char *name)
struct node *node = parent->children;
while (node) {
if (!strcmp(node->name, name)) {
if (streq(node->name, name)) {
delete_node(node);
return;
}
@ -296,6 +296,23 @@ void delete_node(struct node *node)
delete_labels(&node->labels);
}
void append_to_property(struct node *node,
char *name, const void *data, int len)
{
struct data d;
struct property *p;
p = get_property(node, name);
if (p) {
d = data_append_data(p->val, data, len);
p->val = d;
} else {
d = data_append_data(empty_data, data, len);
p = build_property(name, d);
add_property(node, p);
}
}
struct reserve_info *build_reserve_entry(uint64_t address, uint64_t size)
{
struct reserve_info *new = xmalloc(sizeof(*new));
@ -335,17 +352,19 @@ struct reserve_info *add_reserve_entry(struct reserve_info *list,
return list;
}
struct boot_info *build_boot_info(struct reserve_info *reservelist,
struct node *tree, uint32_t boot_cpuid_phys)
struct dt_info *build_dt_info(unsigned int dtsflags,
struct reserve_info *reservelist,
struct node *tree, uint32_t boot_cpuid_phys)
{
struct boot_info *bi;
struct dt_info *dti;
bi = xmalloc(sizeof(*bi));
bi->reservelist = reservelist;
bi->dt = tree;
bi->boot_cpuid_phys = boot_cpuid_phys;
dti = xmalloc(sizeof(*dti));
dti->dtsflags = dtsflags;
dti->reservelist = reservelist;
dti->dt = tree;
dti->boot_cpuid_phys = boot_cpuid_phys;
return bi;
return dti;
}
/*
@ -511,7 +530,9 @@ struct node *get_node_by_phandle(struct node *tree, cell_t phandle)
struct node *get_node_by_ref(struct node *tree, const char *ref)
{
if (ref[0] == '/')
if (streq(ref, "/"))
return tree;
else if (ref[0] == '/')
return get_node_by_path(tree, ref);
else
return get_node_by_label(tree, ref);
@ -590,12 +611,12 @@ static int cmp_reserve_info(const void *ax, const void *bx)
return 0;
}
static void sort_reserve_entries(struct boot_info *bi)
static void sort_reserve_entries(struct dt_info *dti)
{
struct reserve_info *ri, **tbl;
int n = 0, i = 0;
for (ri = bi->reservelist;
for (ri = dti->reservelist;
ri;
ri = ri->next)
n++;
@ -605,14 +626,14 @@ static void sort_reserve_entries(struct boot_info *bi)
tbl = xmalloc(n * sizeof(*tbl));
for (ri = bi->reservelist;
for (ri = dti->reservelist;
ri;
ri = ri->next)
tbl[i++] = ri;
qsort(tbl, n, sizeof(*tbl), cmp_reserve_info);
bi->reservelist = tbl[0];
dti->reservelist = tbl[0];
for (i = 0; i < (n-1); i++)
tbl[i]->next = tbl[i+1];
tbl[n-1]->next = NULL;
@ -702,8 +723,258 @@ static void sort_node(struct node *node)
sort_node(c);
}
void sort_tree(struct boot_info *bi)
void sort_tree(struct dt_info *dti)
{
sort_reserve_entries(bi);
sort_node(bi->dt);
sort_reserve_entries(dti);
sort_node(dti->dt);
}
/* utility helper to avoid code duplication */
static struct node *build_and_name_child_node(struct node *parent, char *name)
{
struct node *node;
node = build_node(NULL, NULL);
name_node(node, xstrdup(name));
add_child(parent, node);
return node;
}
static struct node *build_root_node(struct node *dt, char *name)
{
struct node *an;
an = get_subnode(dt, name);
if (!an)
an = build_and_name_child_node(dt, name);
if (!an)
die("Could not build root node /%s\n", name);
return an;
}
static bool any_label_tree(struct dt_info *dti, struct node *node)
{
struct node *c;
if (node->labels)
return true;
for_each_child(node, c)
if (any_label_tree(dti, c))
return true;
return false;
}
static void generate_label_tree_internal(struct dt_info *dti,
struct node *an, struct node *node,
bool allocph)
{
struct node *dt = dti->dt;
struct node *c;
struct property *p;
struct label *l;
/* if there are labels */
if (node->labels) {
/* now add the label in the node */
for_each_label(node->labels, l) {
/* check whether the label already exists */
p = get_property(an, l->label);
if (p) {
fprintf(stderr, "WARNING: label %s already"
" exists in /%s", l->label,
an->name);
continue;
}
/* insert it */
p = build_property(l->label,
data_copy_mem(node->fullpath,
strlen(node->fullpath) + 1));
add_property(an, p);
}
/* force allocation of a phandle for this node */
if (allocph)
(void)get_node_phandle(dt, node);
}
for_each_child(node, c)
generate_label_tree_internal(dti, an, c, allocph);
}
static bool any_fixup_tree(struct dt_info *dti, struct node *node)
{
struct node *c;
struct property *prop;
struct marker *m;
for_each_property(node, prop) {
m = prop->val.markers;
for_each_marker_of_type(m, REF_PHANDLE) {
if (!get_node_by_ref(dti->dt, m->ref))
return true;
}
}
for_each_child(node, c) {
if (any_fixup_tree(dti, c))
return true;
}
return false;
}
static void add_fixup_entry(struct dt_info *dti, struct node *fn,
struct node *node, struct property *prop,
struct marker *m)
{
char *entry;
/* m->ref can only be a REF_PHANDLE, but check anyway */
assert(m->type == REF_PHANDLE);
/* there shouldn't be any ':' in the arguments */
if (strchr(node->fullpath, ':') || strchr(prop->name, ':'))
die("arguments should not contain ':'\n");
xasprintf(&entry, "%s:%s:%u",
node->fullpath, prop->name, m->offset);
append_to_property(fn, m->ref, entry, strlen(entry) + 1);
free(entry);
}
static void generate_fixups_tree_internal(struct dt_info *dti,
struct node *fn,
struct node *node)
{
struct node *dt = dti->dt;
struct node *c;
struct property *prop;
struct marker *m;
struct node *refnode;
for_each_property(node, prop) {
m = prop->val.markers;
for_each_marker_of_type(m, REF_PHANDLE) {
refnode = get_node_by_ref(dt, m->ref);
if (!refnode)
add_fixup_entry(dti, fn, node, prop, m);
}
}
for_each_child(node, c)
generate_fixups_tree_internal(dti, fn, c);
}
static bool any_local_fixup_tree(struct dt_info *dti, struct node *node)
{
struct node *c;
struct property *prop;
struct marker *m;
for_each_property(node, prop) {
m = prop->val.markers;
for_each_marker_of_type(m, REF_PHANDLE) {
if (get_node_by_ref(dti->dt, m->ref))
return true;
}
}
for_each_child(node, c) {
if (any_local_fixup_tree(dti, c))
return true;
}
return false;
}
static void add_local_fixup_entry(struct dt_info *dti,
struct node *lfn, struct node *node,
struct property *prop, struct marker *m,
struct node *refnode)
{
struct node *wn, *nwn; /* local fixup node, walk node, new */
uint32_t value_32;
char **compp;
int i, depth;
/* walk back retreiving depth */
depth = 0;
for (wn = node; wn; wn = wn->parent)
depth++;
/* allocate name array */
compp = xmalloc(sizeof(*compp) * depth);
/* store names in the array */
for (wn = node, i = depth - 1; wn; wn = wn->parent, i--)
compp[i] = wn->name;
/* walk the path components creating nodes if they don't exist */
for (wn = lfn, i = 1; i < depth; i++, wn = nwn) {
/* if no node exists, create it */
nwn = get_subnode(wn, compp[i]);
if (!nwn)
nwn = build_and_name_child_node(wn, compp[i]);
}
free(compp);
value_32 = cpu_to_fdt32(m->offset);
append_to_property(wn, prop->name, &value_32, sizeof(value_32));
}
static void generate_local_fixups_tree_internal(struct dt_info *dti,
struct node *lfn,
struct node *node)
{
struct node *dt = dti->dt;
struct node *c;
struct property *prop;
struct marker *m;
struct node *refnode;
for_each_property(node, prop) {
m = prop->val.markers;
for_each_marker_of_type(m, REF_PHANDLE) {
refnode = get_node_by_ref(dt, m->ref);
if (refnode)
add_local_fixup_entry(dti, lfn, node, prop, m, refnode);
}
}
for_each_child(node, c)
generate_local_fixups_tree_internal(dti, lfn, c);
}
void generate_label_tree(struct dt_info *dti, char *name, bool allocph)
{
if (!any_label_tree(dti, dti->dt))
return;
generate_label_tree_internal(dti, build_root_node(dti->dt, name),
dti->dt, allocph);
}
void generate_fixups_tree(struct dt_info *dti, char *name)
{
if (!any_fixup_tree(dti, dti->dt))
return;
generate_fixups_tree_internal(dti, build_root_node(dti->dt, name),
dti->dt);
}
void generate_local_fixups_tree(struct dt_info *dti, char *name)
{
if (!any_local_fixup_tree(dti, dti->dt))
return;
generate_local_fixups_tree_internal(dti, build_root_node(dti->dt, name),
dti->dt);
}

31
contrib/dtc/scripts/kup-dtc Executable file
View File

@ -0,0 +1,31 @@
#! /bin/sh
REMOTE_GIT=/pub/scm/utils/dtc/dtc.git
REMOTE_PATH=/pub/software/utils/dtc
set -e
kup_one () {
VERSION="$1"
TAG="v$VERSION"
PREFIX="dtc-$VERSION/"
TAR="dtc-$VERSION.tar"
SIG="$TAR.sign"
git archive --format=tar --prefix="$PREFIX" -o "$TAR" "$TAG"
gpg --detach-sign --armor -o "$SIG" "$TAR"
ls -l "$TAR"*
# Verify the signature as a sanity check
gpg --verify "$SIG" "$TAR"
kup put --tar --prefix="$PREFIX" "$REMOTE_GIT" "$TAG" "$SIG" "$REMOTE_PATH/$TAR.gz"
}
for version; do
kup_one $version
done

43
contrib/dtc/srcpos.c
View File

@ -34,7 +34,7 @@ struct search_path {
static struct search_path *search_path_head, **search_path_tail;
static char *dirname(const char *path)
static char *get_dirname(const char *path)
{
const char *slash = strrchr(path, '/');
@ -77,7 +77,7 @@ static char *try_open(const char *dirname, const char *fname, FILE **fp)
else
fullname = join_path(dirname, fname);
*fp = fopen(fullname, "r");
*fp = fopen(fullname, "rb");
if (!*fp) {
free(fullname);
fullname = NULL;
@ -150,7 +150,7 @@ void srcfile_push(const char *fname)
srcfile = xmalloc(sizeof(*srcfile));
srcfile->f = srcfile_relative_open(fname, &srcfile->name);
srcfile->dir = dirname(srcfile->name);
srcfile->dir = get_dirname(srcfile->name);
srcfile->prev = current_srcfile;
srcfile->lineno = 1;
@ -246,46 +246,27 @@ srcpos_copy(struct srcpos *pos)
return pos_new;
}
void
srcpos_dump(struct srcpos *pos)
{
printf("file : \"%s\"\n",
pos->file ? (char *) pos->file : "<no file>");
printf("first_line : %d\n", pos->first_line);
printf("first_column: %d\n", pos->first_column);
printf("last_line : %d\n", pos->last_line);
printf("last_column : %d\n", pos->last_column);
printf("file : %s\n", pos->file->name);
}
char *
srcpos_string(struct srcpos *pos)
{
const char *fname = "<no-file>";
char *pos_str;
int rc;
if (pos)
if (pos->file && pos->file->name)
fname = pos->file->name;
if (pos->first_line != pos->last_line)
rc = asprintf(&pos_str, "%s:%d.%d-%d.%d", fname,
pos->first_line, pos->first_column,
pos->last_line, pos->last_column);
xasprintf(&pos_str, "%s:%d.%d-%d.%d", fname,
pos->first_line, pos->first_column,
pos->last_line, pos->last_column);
else if (pos->first_column != pos->last_column)
rc = asprintf(&pos_str, "%s:%d.%d-%d", fname,
pos->first_line, pos->first_column,
pos->last_column);
xasprintf(&pos_str, "%s:%d.%d-%d", fname,
pos->first_line, pos->first_column,
pos->last_column);
else
rc = asprintf(&pos_str, "%s:%d.%d", fname,
pos->first_line, pos->first_column);
if (rc == -1)
die("Couldn't allocate in srcpos string");
xasprintf(&pos_str, "%s:%d.%d", fname,
pos->first_line, pos->first_column);
return pos_str;
}

1
contrib/dtc/srcpos.h
View File

@ -105,7 +105,6 @@ extern struct srcpos srcpos_empty;
extern void srcpos_update(struct srcpos *pos, const char *text, int len);
extern struct srcpos *srcpos_copy(struct srcpos *pos);
extern char *srcpos_string(struct srcpos *pos);
extern void srcpos_dump(struct srcpos *pos);
extern void srcpos_verror(struct srcpos *pos, const char *prefix,
const char *fmt, va_list va)

18
contrib/dtc/treesource.c
View File

@ -25,12 +25,12 @@ extern FILE *yyin;
extern int yyparse(void);
extern YYLTYPE yylloc;
struct boot_info *the_boot_info;
struct dt_info *parser_output;
bool treesource_error;
struct boot_info *dt_from_source(const char *fname)
struct dt_info *dt_from_source(const char *fname)
{
the_boot_info = NULL;
parser_output = NULL;
treesource_error = false;
srcfile_push(fname);
@ -43,7 +43,7 @@ struct boot_info *dt_from_source(const char *fname)
if (treesource_error)
die("Syntax error parsing input tree\n");
return the_boot_info;
return parser_output;
}
static void write_prefix(FILE *f, int level)
@ -109,7 +109,7 @@ static void write_propval_string(FILE *f, struct data val)
break;
case '\0':
fprintf(f, "\", ");
while (m && (m->offset < i)) {
while (m && (m->offset <= (i + 1))) {
if (m->type == LABEL) {
assert(m->offset == (i+1));
fprintf(f, "%s: ", m->ref);
@ -178,7 +178,7 @@ static void write_propval_bytes(FILE *f, struct data val)
m = m->next;
}
fprintf(f, "%02hhx", *bp++);
fprintf(f, "%02hhx", (unsigned char)(*bp++));
if ((const void *)bp >= propend)
break;
fprintf(f, " ");
@ -263,13 +263,13 @@ static void write_tree_source_node(FILE *f, struct node *tree, int level)
}
void dt_to_source(FILE *f, struct boot_info *bi)
void dt_to_source(FILE *f, struct dt_info *dti)
{
struct reserve_info *re;
fprintf(f, "/dts-v1/;\n\n");
for (re = bi->reservelist; re; re = re->next) {
for (re = dti->reservelist; re; re = re->next) {
struct label *l;
for_each_label(re->labels, l)
@ -279,6 +279,6 @@ void dt_to_source(FILE *f, struct boot_info *bi)
(unsigned long long)re->re.size);
}
write_tree_source_node(f, bi->dt, 0);
write_tree_source_node(f, dti->dt, 0);
}

49
contrib/dtc/util.c
View File

@ -39,11 +39,41 @@
char *xstrdup(const char *s)
{
int len = strlen(s) + 1;
char *dup = xmalloc(len);
char *d = xmalloc(len);
memcpy(dup, s, len);
memcpy(d, s, len);
return dup;
return d;
}
/* based in part from (3) vsnprintf */
int xasprintf(char **strp, const char *fmt, ...)
{
int n, size = 128; /* start with 128 bytes */
char *p;
va_list ap;
/* initial pointer is NULL making the fist realloc to be malloc */
p = NULL;
while (1) {
p = xrealloc(p, size);
/* Try to print in the allocated space. */
va_start(ap, fmt);
n = vsnprintf(p, size, fmt, ap);
va_end(ap);
/* If that worked, return the string. */
if (n > -1 && n < size)
break;
/* Else try again with more space. */
if (n > -1) /* glibc 2.1 */
size = n + 1; /* precisely what is needed */
else /* glibc 2.0 */
size *= 2; /* twice the old size */
}
*strp = p;
return strlen(p);
}
char *join_path(const char *path, const char *name)
@ -152,7 +182,6 @@ char get_escape_char(const char *s, int *i)
int j = *i + 1;
char val;
assert(c);
switch (c) {
case 'a':
val = '\a';
@ -219,10 +248,6 @@ int utilfdt_read_err_len(const char *filename, char **buffp, off_t *len)
if (offset == bufsize) {
bufsize *= 2;
buf = xrealloc(buf, bufsize);
if (!buf) {
ret = ENOMEM;
break;
}
}
ret = read(fd, &buf[offset], bufsize - offset);
@ -353,7 +378,6 @@ int utilfdt_decode_type(const char *fmt, int *type, int *size)
void utilfdt_print_data(const char *data, int len)
{
int i;
const char *p = data;
const char *s;
/* no data, don't print */
@ -375,11 +399,12 @@ void utilfdt_print_data(const char *data, int len)
const uint32_t *cell = (const uint32_t *)data;
printf(" = <");
for (i = 0; i < len; i += 4)
printf("0x%08x%s", fdt32_to_cpu(cell[i / 4]),
i < (len - 4) ? " " : "");
for (i = 0, len /= 4; i < len; i++)
printf("0x%08x%s", fdt32_to_cpu(cell[i]),
i < (len - 1) ? " " : "");
printf(">");
} else {
const unsigned char *p = (const unsigned char *)data;
printf(" = [");
for (i = 0; i < len; i++)
printf("%02x%s", *p++, i < len - 1 ? " " : "");

18
contrib/dtc/util.h
View File

@ -27,13 +27,20 @@
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
static inline void __attribute__((noreturn)) die(const char *str, ...)
#ifdef __GNUC__
static inline void
__attribute__((noreturn)) __attribute__((format (printf, 1, 2)))
die(const char *str, ...)
#else
static inline void die(const char *str, ...)
#endif
{
va_list ap;
va_start(ap, str);
fprintf(stderr, "FATAL ERROR: ");
vfprintf(stderr, str, ap);
va_end(ap);
exit(1);
}
@ -52,12 +59,19 @@ static inline void *xrealloc(void *p, size_t len)
void *new = realloc(p, len);
if (!new)
die("realloc() failed (len=%d)\n", len);
die("realloc() failed (len=%zd)\n", len);
return new;
}
extern char *xstrdup(const char *s);
#ifdef __GNUC__
extern int __attribute__((format (printf, 2, 3)))
xasprintf(char **strp, const char *fmt, ...);
#else
extern int xasprintf(char **strp, const char *fmt, ...);
#endif
extern char *join_path(const char *path, const char *name);
/**