lualoader was not respecting the 'xen_kernel' environment variable, which
hints to the interpreter that it should load a Xen kernel prior to loading
any other kernel that might be specified. If a Xen kernel is specified and
we fail to load it, we should not proceed to boot.
Reported by: royger
Tested by: royger
manu found in the noted PR that overlays seemed to be clobbering the kenv
and killing the boot. Further inspection revealed that one can `fdt ls` at
the loader prompt for a successful boot, but autoboot breaks it.
In the autoboot case, first setup of FDT is happening in the middle of
bi_load, which triggers loading of the DTBO from /boot.
This is bad, bad, bad. Files in the loader are loaded somewhere in the
middle of the address space one after another. bi_load starts building the
needed kernel bootinfo immediately after the highest-addr loaded file. File
loads in the middle of bi_load suddenly clobber bootinfo and everything goes
off the rails.
The solution to this is to use take advantage of arch_autoload to setup FDT
in efiloader compiled with LOADER_FDT_SUPPORT. This matches how it works in
ubldr land, and is how it should have worked when overlay support was added
to efiloader since fdt_setup_fdtp now has the potential to load files
(courtesy of fdt_platform_load_dtb).
PR: 230804
Discussed with: imp
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D16858
As indicated by the comment, any fixups applied (which might include
overlays) can invalidate the previously located node by adding nodes or
setting/adding properties. The later fdt_setprop of fixup-applied property
would then fail because of the bad/wrong node offset.
This would have generally been harmless, but potentially caused multiple
applications of fixups and caused a little bit of bloat.
MFC after: 1 week
operation of "loader". The dramatic increase in size of
SPA_MAXBLOCKSIZE in r304321 causes the heap space to be exhausted,
so malloc() fails, ultimately leading to a memcpy() with a
destination of 0x0.
MFC after: 3 days
The current chain command does accept only device, allow also a file to be used,
such as /boot/pmbr or /boot/mbr (or stored third party MBR/VBR block).
Also fix file descriptor leak.
This includes some light rework to simplify the line parsing, as well. If
we hit a line match, we'll always either use the line and move on to the
next line, or we'll spew out malformed line errors.
We had multiple spots to output the error and set the status based on
whether we had a non-nil first capture group or failed EOL validation, but
it was always the same error. Light rework entails a small label jump to
skip error handling and elimination of 'found' local.
A couple of issues addressed:
1.) Modules with - in the name were not recognized as modules
2.) The module regex was repeated for each place a module name may appear
3.) The 'strip leading space' bits were repeated for each expression
4.) The trailing 'comment validation' stuff was repeated every expression
#4 still has some more work to be done. exec lines, for instance, don't
capture a 'value' -- there's only one capture pattern. This throws off the
'c' value that we match, so the trailing bits aren't *actually* being
validated. This isn't a new issue, though, so a future comit will address
this.
Remove a bunch of special cases for UEFI and serial consoles. We do
want to do curses and menu things here. This makes us match what we do
in FORTH, with the possible exception of boxes around menus.
Differential Revision: https://reviews.freebsd.org/D16816
Now that a complete set is written, save for one describing loader.lua,
install all of them. This was not previously done as they were written to
hopefully avoid confusion as bits and pieces of the overall system were
undocumented.
Uncovered while writing the documentation from this, we previously
explicitly fell back to orb or orbbw if an invalid or incompatible logodef
was selected -- in contrast to branddefs, which have an exported variable
that one can whip up a quick local.lua to override in a safe manner that
works regardless of whether or not loader.conf(5) successfully loads.
These are less controversial than the others, thus done in a separate
commit. These are all used internally and ways to override are provided via
soon-to-be-documented API or loader.conf(5) variables.
Ideally, all of the functionality to revamp the loader screen has associated
APIs that are flexible enough that third-party scripts wouldn't need to
override these.
Turns out there was a hidden dependency we hasn't counted upon. The
host load /boot/userboot.so to boot the VMs it runs. This means that
the change to lua meant suddently that nobody could run their older
VMs because LUA wasn't in 10.0, last month's HardenedBSD, 11.2 or
whatever. Even more than for the /boot/loader* binaries, we need a
good coexistance strategy for this. While that's being designed and
implemented, drop back to always 4th for userboot.so. This will fail
safe in all but the most extreme environments (but lua-only hacks
to .lua files won't be processes in VMs until we fix it).
Differential Review: https://reviews.freebsd.org/D16805
After years in the making, lualoader is ready to make its debut. Both
flavors of loader are still built by default, and may be installed as
/boot/loader or /boot/loader.efi as appropriate either by manually creating
hard links or using LOADER_DEFAULT_INTERP as documented in build(7).
Discussed with: imp
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D16795
Compiling FreeBSD/i386 with modern GCC triggers warnings for various
places that convert 64-bit EFI_ADDRs to pointers and vice versa.
- Cast pointers to uintptr_t rather than to uint64_t when assigning
to a 64-bit integer.
- Cast 64-bit integers to uintptr_t before a cast to a pointer.
Reviewed by: kevans
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D16586
BD_SUPPORT_FRAGS is preprocessor knob to allow partial reads in bioscd/biosdisk
level. However, we already have support for partial reads in bcache, and there
is no need to have duplication via preprocessor controls.
Note that bioscd/biosdisk interface is assumed to perform IO in 512B blocks,
so the only translation we have to do is 512 <-> native block size.
Differential Revision: https://reviews.freebsd.org/D16600
While we're not super size constrained, the x86 BIOS /boot/loader has
to be less than about 520k-530k to be reliable. The LUA loader is at
this size today. -Oz saves 15-20% on the size, keeping us safely small
enough (comparable to where we were with the 4th loader). This will
also help with sjg's work on bringing in bearssl, though we may again
be looking for space in the LUA loader.
Size table for clang 6.0.0:
default -O1 -Os -Oz
4th 442368 417792 389120 376832
lua 524288 479232 446464 430080
Tested by: kevans91@ (ubldr on armv7), dhw@ (loader on amdy64)
Differential Revision: https://reviews.freebsd.org/D16724
Create loader_{4th,lua,simp}{,.efi}. All of these are installed by
default. Create LOADER_DEFAULT_INTERP to specify the default
interpreter when no other is specified. LOADER_INTERP is the current
interpreter language building. Turn building of lua on by default to
match 4th. simploader is a simplified loader build w/o any interpreter
language (but with a simple loader). This is the historic behavir you
got with WITHOUT_FORTH. Make a hard link to the default loader. This
has to be a hard link rather than the more desirable soft link because
older zfsboot blocks don't support symlinks.
RelNotes: Yes
Differential Revision: https://reviews.freebsd.org/D16705
after opening the console, replacing init as PID 1.
From the user point of view, it makes it possible to run eg the
shell as PID 1, using 'set init_exec=/bin/sh' at the loader(8)
prompt.
Reviewed by: kib
MFC after: 2 weeks
Relnotes: yes
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D16625
It was possible in some rare circumstances for ngets to behave terribly with
bhyveload and some form of redirecting user input over a pipe.
PR: 198706
Submitted by: Ivan Krivonos <int0dster@gmail.com>
MFC after: 1 week
gptboot was broken when r316078 added the LOADER_GELI_SUPPORT #ifdef to
not pass geliargs via __exec. KARGS_FLAGS_EXTARG must not be used if we're
not going to pass an additional argument to __exec.
PR: 228151
Submitted by: guyyur@gmail.com
MFC after: 1 week
Since bd_open() does early increment for reference counter and bcache
allocation, it also should undo those in case of the error.
Also remove unused variables rdev, g_err.
On a FreeNAS mini XL, with geli encrypted drives the loader crashed in
geli_read().
When we iterate over the list of disks and allocate the zfsdsk structures we
don’t zero out the gdev pointer. In one case that resulted in geli_read()
(called on the bogus pointer) dividing by zero.
Use calloc() to ensure the zfsdsk structure is always zeroed, so the pointer is
initialised to NULL. As a side benefit it gets rid of one #ifdef
LOADER_GELI_SUPPORT.
number and CHS based number. However, on some systems, BIOS would
report 0 in CHS fields, making the system to think there is 0 sectors.
Add a check before comparing the calculated total with bd_sectors.
Reviewed by: tsoome, cy
Differential Revision: https://reviews.freebsd.org/D16577
efi-autoresizecons is currently executed for every boot. If it fails, we
risk failing the boot, and we really shouldn't do that unless we absolutely
must.
Not being able to locate GOP or UGA is not a significant enough failure to
kill the boot. We always have the option to fall back to resizing ConOut to
a higher text mode resolution (if available), so do that.
This was detected by Doug [1] while attempting a bhyve + UEFI + PXE boot.
This patch was effectively also submitted by Doug, but I expanded the
comment he had originally sent me a little bit to indicate why this is an OK
idea.
Reported by: Doug Ambrisko <ambrisko@ambrisko.com> [1]
number of sectors reported through the BIOS. Cylinders * heads *
sectors may not necessarily be equal to the total number of sectors
reported through int13h function 48h.
An example of this is when a Mediasonic HD3-U2B PATA to USB enclosure
with a 80 GB disk is attached. Loader hangs at line 506 of
stand/i386/libi386/biosdisk.c while attempting to read sectors beyond
the end of the disk, sector 156906855. I discovered that the Mediasonic
enclosure was reporting the disk with 9767 cylinders, 255 heads, 63
sectors/track. That's 156906855 sectors. However camcontrol and
Windows 10 both report report the disk having 156301488 sectors, not
the calculated value. At line 280 biosdisk.c sets the sectors to the
higher of either bd->bd_sectors or the total calculated at line 276
(156906855) instead of the lower and correct value of 156301488 reported
by int 13h 48h.
This was tested on all three of my Mediasonic HD3-U2B PATA to USB
enclosures.
Instead of using the higher of bd_sectors (returned by int13h) or the
calculated value, this patch uses the lower and safer of the values.
Reviewed by: tsoome@
Differential Revision: https://reviews.freebsd.org/D16577
If there are no block devices, there is no need to printout
error (ENOENT).
In case of netboot, our image path has no block device, no need to make
noise about it.
1MB was leaving very little margin in some of the worse-case scenarios with
lualoader. 2MB is still low enough that we shouldn't have any problems with
UBoot-supported boards.
MFC after: 1 week
The latter matches the rest of the tree better [0]. The UPDATING entry has
been updated to reflect this, and the new tunable is now documented in
loader(8) [1].
Reported by: imp [0], Shawn Webb [1]
Note when we've found a 8250 PNP node. Only try to set hw.uart.console
if we see one (otherwise ignore serial hints). The 8250 is the only
one known to have I/O ports, so limit the guessing to when we've
positively seen one. And limit this to x86 since that's the only
platform where we have I/O ports. Otherwise, we'd set the serial port
to something crazy for the platform and fall off the cliff early in
boot.
Differential Revision: https://reviews.freebsd.org/D16463
Add some verbose debugging information to the loader's new
choices. I'll remove these / put them behind a DEBUG define at a later
time. This is to give additional information if there's any dangling
edge cases not contemplated by the code. r336789 had most of this
change, but had the wrong commit message. This refines it slightly.
nodes. These show up in default entries on SuperMicro motherboards and
elsewhere. Before, we couldn't find a block device associated with the
device path and return BAD_CHOICE which was an instant
failure. However, a VendHw node isn't specifc, so when we don't find a
media path, return NOT_SPECIFIC so that the rest of the algorithms
work.
Sponsored by: Netflix.
It works excellent, but KDB disassembler and DTrace FBT provider for
RISC-V do lack support for it. They currently handle 4-byte instructions
only, while C-compressed ISA extension introduces 2-byte instructions
freely mixing them together.
So disable it for now.
Reviewed by: markj@
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D16436
loading.
If we are booting in a conforming UEFI Boot Manager Environment, then
use the BootCurrent variable to find the BootXXXX we're using. Once we
find that, then if it contains more than one EFI_DEVICE_PATH in its
what to boot section, try to use the last one as the kernel to
load. This will also set the default root partition as well. If
there's only one path, or if there's an error along the way, assume
that nothing specific was specified and revert to the old
algorithm. If something was specified, but not found, then fail the
boot. Otherwise you that, specific thing. On FreeBSD, this can be set
using efibootmgr -l <loader> -k <kernel>. We try a few variations of
kernel to cope with the fact that UEFI comes from a DOS world where
paths might be upper case and/or contain back-slashes.
Note: In an ideal world, we'd work out where we are in chain loading
by looking at the passed-in image handle and doing name
matching. However, that's unreliable since at least boot1.efi booted
images don't have that, hence the assumption that loader.efi needs to
load the last thing on the list, if possible.
The reason we fail for something specific is so that we can fully
participate in the UEFI Boot Manager Protocol and fail over to the
next item in the list of BootOrder choices when something goes wrong
at this stage.
This implements was was talked about in freebsd-arch@ last year
https://docs.freebsd.org/cgi/getmsg.cgi?fetch=3576+0+archive/2017/freebsd-arch/20171022.freebsd-arch
and documented in full (after changed resulting from the discussion) in
https://docs.google.com/document/d/1aK9IqF-60JPEbUeSAUAkYjF2W_8EnmczFs6RqCT90Jg/edit#
although one or two minor details may have been modified in this
implementation to make it work, and the ZFS MEDIA PATH extension isn't
implemented. This does not yet move things to ESP:\efi\freebsd\loader.efi.
RelNotes: Yes
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D16403
Lookup a block device by it's device path. We use a 'loose' lookup
whereby we scan forward to the first Media Path portion of the device
path, then look at all our handles for one whose first Media Path
matches. This will also work if the device path pointed to has a
following file path (or paths) as that's ignored. It assumes that
there's only one media path node that describes the entire device,
which is true as of the latest UEFI spec (2.7 Errata A) as far as I've
been able to determine.
Sponsored by: Netflix
Returns true if the first node pointed to by devpath1 is identical to
the first node pointed to by devpath2, with care taken to not read
past the end of the valid parts of either devpath1 or
devpath2. Otherwise, returns false.
Sponsored by: Netflix
Takes a generic device path as its input. Scans through it to find the
first media_path node in it and returns a pointer to it. If none is
found, NULL is returned.
Sponsored by: Netflix
line args. I had thought console would be NULL, but it's efi. Set it
to efi (as a clue) before we initialize the console, then test it to
see if it changed on the command line to do the automatic
override. This gets my serial console back.
zfsloader as a hard link. While newer ones do, the whole point of the
link was to transition to the new world order smoothly. A hard link is
less flexible, but it works and will result in fewer bumps. Adjust
UPDATING entry to match.
Remove all cross references to zfsloader.8 and /boot/zfsloader.
Move ZFS specific info into loader.8.
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D16361
We no longer really need a separate zfsloader. It was useful when we
were first supporting ZFS and had limited ability to properly boot off
of ZFS without the special boot loader. Now that the boot loader has
matured, go the way loader.efi pioneered and just build one
binary. Change the name of the loader to load in the secondary boot
blocks to be just /boot/loader. Provide a symbolic link from zfsloader
to loader so people who have not upgraded their boot blocks are not
affected. This has the happy benefit of making coexistence easier as
well (fewer binaries in the matrix).
Discussed with: allanjude@, kevans@
RelNotes: Yes
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D16361
Setting rootdev in the enviornment should specify things
completely. If it is set, then have it override everything else.
PR: 229770
Differential Review: https://reviews.freebsd.org/D16322
up serial output. Setting the cursor position after every character is
inefficient, and causes all lines to be over-printed in the serial
console for the boot loader. Allow the terminal to do the emulation.
This isn't completely perfect when the size of the terminal attached
to the serial port isn't the same as 80x25 to match the viedoe console
(or whatever the video console is). While imperfect still, these
changes make it much better.
This makes the serial port useful with UEFI.
Differential Revision: https://reviews.freebsd.org/D16309
o Fix the parsing of the device path. a last minute change terminated
it too soon.
o Kill setting LINES. We don't need to do it, and even if we did hard
coding it to 24 is wrong.
o Now that the console is working again for the loader, adjust the
printfs to be more in line with other platforms.
note that r336270's commit message was slightly incorrect. It changed
the default setting of the console to honor the ConOut
variable. Overrides via the command line are still possible, and we
use the devices in ConOut to set the proper console. If, for example,
serial cosnole is specified, we'll set console to "efi" if ConOut has
a serial port list and to either "efi comconsole" or "comconsole efi"
if not depending on whether -D or -D -h was specified.
RelNotes: Yes
Sponsored by: Netflix
For server machines, ComOut is set to the set of devices that the efi
console suppots. Parse it to see if we have serial, video or both.
Make that take precidence over the command line args. boot1.efi parses
them, but loader.efi doesn't. It's not clear where to read boot.conf
from, so we don't do that. The command line args can still be set via
efibootmgr, which is more inline with the UEFI boot manager to replace
that. These args are typically used only to set serial vs video and
the com speed line. We can infer that from ComOut, so do so.
Remember the com speed and hw.uart.console to match.
RelNotes: yes
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D15917
This moves the bulk of the geli support from lib386/biosdisk.c into a new
geli/gelidev.c which implements a devsw-type device whose dv_strategy()
function handles geli decryption. Support for all arches comes from moving
the taste-and-attach code to the devopen() function in libsa.
After opening any DEVT_DISK device, devopen() calls the new function
geli_probe_and_attach(), which will "attach" the geli code to the open_file
struct by creating a geli_devdesc instance to replace the disk_devdesc
instance in the open_file. That routes all IO for the device through the
geli code.
A new public geli_add_key() function is added, to allow arch/vendor-specific
code to add keys obtained from custom hardware or other sources.
With these changes, geli support will be compiled into all variations of
loader(8) on all arches because the default is WITH_LOADER_GELI.
Relnotes: yes
Sponsored by: Microchip Technology Inc
Differential Revision: https://reviews.freebsd.org/D15743
to it being a common name elsewhere. Rename the old kzip one
to subr_inflate.c.
This actually fixes the build issues on sparc64 that my inclusion of
.PATH ${SYSDIR}/kern created in r336244, so also revert the broken
workaround I committed in r336249.
This slipped passed me because apparently, I never did a clean build.
