As the first step at making this more generic, move kboot to top level. Sponsored by: Netflix Reviewed by: luporl, tsoome Differential Revision: https://reviews.freebsd.org/D33513
191 lines
5.0 KiB
C
191 lines
5.0 KiB
C
/*-
|
|
* Copyright (C) 2014 Nathan Whitehorn
|
|
* All rights reserved.
|
|
*
|
|
* 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 AUTHOR ``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 TOOLS GMBH 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 <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/types.h>
|
|
#include <fdt_platform.h>
|
|
#include <libfdt.h>
|
|
#include "bootstrap.h"
|
|
#include "host_syscall.h"
|
|
|
|
static void
|
|
add_node_to_fdt(void *buffer, const char *path, int fdt_offset)
|
|
{
|
|
int child_offset, fd, pfd, error, dentsize;
|
|
char subpath[512];
|
|
void *propbuf;
|
|
ssize_t proplen;
|
|
|
|
struct host_dent {
|
|
unsigned long d_fileno;
|
|
unsigned long d_off;
|
|
unsigned short d_reclen;
|
|
char d_name[];
|
|
/* uint8_t d_type; */
|
|
};
|
|
char dents[2048];
|
|
struct host_dent *dent;
|
|
int d_type;
|
|
|
|
fd = host_open(path, O_RDONLY, 0);
|
|
while (1) {
|
|
dentsize = host_getdents(fd, dents, sizeof(dents));
|
|
if (dentsize <= 0)
|
|
break;
|
|
for (dent = (struct host_dent *)dents;
|
|
(char *)dent < dents + dentsize;
|
|
dent = (struct host_dent *)((void *)dent + dent->d_reclen)) {
|
|
sprintf(subpath, "%s/%s", path, dent->d_name);
|
|
if (strcmp(dent->d_name, ".") == 0 ||
|
|
strcmp(dent->d_name, "..") == 0)
|
|
continue;
|
|
d_type = *((char *)(dent) + dent->d_reclen - 1);
|
|
if (d_type == 4 /* DT_DIR */) {
|
|
child_offset = fdt_add_subnode(buffer, fdt_offset,
|
|
dent->d_name);
|
|
if (child_offset < 0) {
|
|
printf("Error %d adding node %s/%s, skipping\n",
|
|
child_offset, path, dent->d_name);
|
|
continue;
|
|
}
|
|
|
|
add_node_to_fdt(buffer, subpath, child_offset);
|
|
} else {
|
|
propbuf = malloc(1024);
|
|
proplen = 0;
|
|
pfd = host_open(subpath, O_RDONLY, 0);
|
|
if (pfd > 0) {
|
|
proplen = host_read(pfd, propbuf, 1024);
|
|
host_close(pfd);
|
|
}
|
|
error = fdt_setprop(buffer, fdt_offset, dent->d_name,
|
|
propbuf, proplen);
|
|
free(propbuf);
|
|
if (error)
|
|
printf("Error %d adding property %s to "
|
|
"node %d\n", error, dent->d_name,
|
|
fdt_offset);
|
|
}
|
|
}
|
|
}
|
|
|
|
host_close(fd);
|
|
}
|
|
|
|
/* Fix up wrong values added to the device tree by prom_init() in Linux */
|
|
|
|
static void
|
|
fdt_linux_fixups(void *fdtp)
|
|
{
|
|
int offset, len;
|
|
const void *prop;
|
|
|
|
/*
|
|
* Remove /memory/available properties, which reflect long-gone OF
|
|
* state
|
|
*/
|
|
|
|
offset = fdt_path_offset(fdtp, "/memory@0");
|
|
if (offset > 0)
|
|
fdt_delprop(fdtp, offset, "available");
|
|
|
|
/*
|
|
* Add reservations for OPAL and RTAS state if present
|
|
*/
|
|
|
|
offset = fdt_path_offset(fdtp, "/ibm,opal");
|
|
if (offset > 0) {
|
|
const uint64_t *base, *size;
|
|
base = fdt_getprop(fdtp, offset, "opal-base-address",
|
|
&len);
|
|
size = fdt_getprop(fdtp, offset, "opal-runtime-size",
|
|
&len);
|
|
if (base != NULL && size != NULL)
|
|
fdt_add_mem_rsv(fdtp, fdt64_to_cpu(*base),
|
|
fdt64_to_cpu(*size));
|
|
}
|
|
offset = fdt_path_offset(fdtp, "/rtas");
|
|
if (offset > 0) {
|
|
const uint32_t *base, *size;
|
|
base = fdt_getprop(fdtp, offset, "linux,rtas-base", &len);
|
|
size = fdt_getprop(fdtp, offset, "rtas-size", &len);
|
|
if (base != NULL && size != NULL)
|
|
fdt_add_mem_rsv(fdtp, fdt32_to_cpu(*base),
|
|
fdt32_to_cpu(*size));
|
|
}
|
|
|
|
/*
|
|
* Patch up /chosen nodes so that the stored handles mean something,
|
|
* where possible.
|
|
*/
|
|
offset = fdt_path_offset(fdtp, "/chosen");
|
|
if (offset > 0) {
|
|
fdt_delprop(fdtp, offset, "cpu"); /* This node not meaningful */
|
|
|
|
offset = fdt_path_offset(fdtp, "/chosen");
|
|
prop = fdt_getprop(fdtp, offset, "linux,stdout-package", &len);
|
|
if (prop != NULL) {
|
|
fdt_setprop(fdtp, offset, "stdout", prop, len);
|
|
offset = fdt_path_offset(fdtp, "/chosen");
|
|
fdt_setprop(fdtp, offset, "stdin", prop, len);
|
|
}
|
|
}
|
|
}
|
|
|
|
int
|
|
fdt_platform_load_dtb(void)
|
|
{
|
|
void *buffer;
|
|
size_t buflen = 409600;
|
|
|
|
buffer = malloc(buflen);
|
|
fdt_create_empty_tree(buffer, buflen);
|
|
add_node_to_fdt(buffer, "/proc/device-tree",
|
|
fdt_path_offset(buffer, "/"));
|
|
fdt_linux_fixups(buffer);
|
|
|
|
fdt_pack(buffer);
|
|
|
|
fdt_load_dtb_addr(buffer);
|
|
free(buffer);
|
|
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
fdt_platform_load_overlays(void)
|
|
{
|
|
|
|
}
|
|
|
|
void
|
|
fdt_platform_fixups(void)
|
|
{
|
|
|
|
}
|
|
|