This patch adds a new --loglevel option to the CBMEM utility which can
be used either numerically (e.g. `cbmem -1 --loglevel 6`) or by name
(e.g. `cbmem -c --loglevel INFO`) to restrict the lines that will be
printed from the CBMEM console log to a maximum loglevel. By default,
using this option means that lines without a loglevel (which usually
happens when payloads or other non-coreboot components add their own
logs to the CBMEM console) will not be printed. Prefixing a `+`
character to the option value (e.g. `--loglevel +6` or
`--loglevel +INFO`) can be used to change that behavior.
Signed-off-by: Julius Werner <jwerner@chromium.org>
Change-Id: I8458027083246df5637dffd3ebfeb4d0a78deadf
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61779
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
In order to provide the same loglevel prefixes and highlighting that
were recently introduced for "interactive" consoles (e.g. UART) to
"stored" consoles (e.g. CBMEM) but minimize the amont of extra storage
space wasted on this info, this patch will write a 1-byte control
character marker indicating the loglevel to the start of every line
logged in those consoles. The `cbmem` utility will then interpret those
markers and translate them back into loglevel prefixes and escape
sequences as needed.
Since coreboot and userspace log readers aren't always in sync,
occasionally an older reader may come across these markers and not know
how to interpret them... but that should usually be fine, as the range
chosen contains non-printable ASCII characters that normally have no
effect on the terminal. At worst the outdated reader would display one
garbled character at the start of every line which isn't that bad.
(Older versions of the `cbmem` utility will translate non-printable
characters into `?` question marks.)
Signed-off-by: Julius Werner <jwerner@chromium.org>
Change-Id: I86073f48aaf1e0a58e97676fb80e2475ec418ffc
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61308
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Rebase all of the timestamps to the lowest (potentially negative) value
in the list when displaying them. Also drop the extra
`timestamp_print_*_entry` calls for time 0 and instead inserted a
"dummy" timestamp entry of time 0 into the table.
TEST=Boot to OS after adding negative timestamps, cbmem -t
Signed-off-by: Bora Guvendik <bora.guvendik@intel.com>
Change-Id: I7eb519c360e066d48dde205401e4ccd3b0b3d8a5
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59555
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Libpayload requires cbmem_id.h file to support extracting values from
CBMEM IMD entries of coreboot tables. Libpayload use BSD-3-Clause
license, and all of its files used to compile a static library have to
use it too.
Change-Id: I97c080e34ebdbcdf14fe3a3c9515b1dea8ede179
Signed-off-by: Jakub Czapiga <jacz@semihalf.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59696
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <patrick@coreboot.org>
On some platforms, runtime firmware crashes write logs to the CBMEM
console. For those, since a crash reboots the system, by the time we
have a chance to run `cbmem` again the boot where the crash happened
will be the one before the "last" (current) boot. So cbmem -1 doesn't
show the interesting part, and cbmem -c potentially shows a lot that is
cumbersome to dig through. This patch introduces a new option cbmem -2
to explicitly show only the boot cycle before the last one.
Signed-off-by: Julius Werner <jwerner@chromium.org>
Change-Id: I6725698f4c9ae07011cbacf0928544cebb4ad6f8
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57510
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
- Add a help target
- Add the -Wshadow option
- Add a way to disable -Werror
Signed-off-by: Martin Roth <martin@coreboot.org>
Change-Id: Icd4e5cf51d60254d274c6e5093285cd49ff1607a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50849
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
These were originally ignored only inside util/ but these files
shouldn't be tracked anywhere.
Change-Id: Ie0846bd8bdd6e52f420f9dd2e72a8a922102ff90
Signed-off-by: Patrick Georgi <patrick@georgi.software>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47012
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
There's no need for the global list of files to ignore, so use git's
ability to work with more local configuration.
Change-Id: I50882e6756cbc0fdfd899353cc23962544690fb3
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46879
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Christian Walter <christian.walter@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
VBOOT_STARTS_VEFORE_BOOTBLOCK indicates that verstage starts before
bootblock. However "cbmem -1" will first try to match "bootblock
starting" to find out the beginning of console for current boot.
Change ENV_STRING for verstage to "verstage-before-bootblock" in the
case and add regex in cbmem utility to grab it.
BUG=b:159220781
TEST=flash and boot, check `cbmem -1`
BRANCH=zork
Signed-off-by: Kangheui Won <khwon@chromium.org>
Change-Id: Ica38f6bfeb05605caadac208e790fd072b352732
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46060
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
Stefan thinks they don't add value.
Command used:
sed -i -e '/file is part of /d' $(git grep "file is part of " |egrep ":( */\*.*\*/\$|#|;#|-- | *\* )" | cut -d: -f1 |grep -v crossgcc |grep -v gcov | grep -v /elf.h |grep -v nvramtool)
The exceptions are for:
- crossgcc (patch file)
- gcov (imported from gcc)
- elf.h (imported from GNU's libc)
- nvramtool (more complicated header)
The removed lines are:
- fmt.Fprintln(f, "/* This file is part of the coreboot project. */")
-# This file is part of a set of unofficial pre-commit hooks available
-/* This file is part of coreboot */
-# This file is part of msrtool.
-/* This file is part of msrtool. */
- * This file is part of ncurses, designed to be appended after curses.h.in
-/* This file is part of pgtblgen. */
- * This file is part of the coreboot project.
- /* This file is part of the coreboot project. */
-# This file is part of the coreboot project.
-# This file is part of the coreboot project.
-## This file is part of the coreboot project.
--- This file is part of the coreboot project.
-/* This file is part of the coreboot project */
-/* This file is part of the coreboot project. */
-;## This file is part of the coreboot project.
-# This file is part of the coreboot project. It originated in the
- * This file is part of the coreinfo project.
-## This file is part of the coreinfo project.
- * This file is part of the depthcharge project.
-/* This file is part of the depthcharge project. */
-/* This file is part of the ectool project. */
- * This file is part of the GNU C Library.
- * This file is part of the libpayload project.
-## This file is part of the libpayload project.
-/* This file is part of the Linux kernel. */
-## This file is part of the superiotool project.
-/* This file is part of the superiotool project */
-/* This file is part of uio_usbdebug */
Change-Id: I82d872b3b337388c93d5f5bf704e9ee9e53ab3a9
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41194
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
We have the git history which is a more reliable librarian.
Change-Id: Idbcc5ceeb33804204e56d62491cb58146f7c9f37
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41175
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: ron minnich <rminnich@gmail.com>
That makes it easier to identify "license only" headers (because they
are now license only)
Script line used for that:
perl -i -p0e 's|/\*.*\n.*This file is part of the coreboot project.*\n.*\*|/* This file is part of the coreboot project. */\n/*|' # ...filelist...
Change-Id: I2280b19972e37c36d8c67a67e0320296567fa4f6
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41065
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
This patch creates a new commonlib/bsd subdirectory with a similar
purpose to the existing commonlib, with the difference that all files
under this subdirectory shall be licensed under the BSD-3-Clause license
(or compatible permissive license). The goal is to allow more code to be
shared with libpayload in the future.
Initially, I'm going to move a few files there that have already been
BSD-licensed in the existing commonlib. I am also exracting most
contents of the often-needed <commonlib/helpers.h> as long as they have
either been written by me (and are hereby relicensed) or have an
existing equivalent in BSD-licensed libpayload code. I am also
relicensing <commonlib/compression.h> (written by me) and
<commonlib/compiler.h> (same stuff exists in libpayload).
Finally, I am extracting the cb_err error code definitions from
<types.h> into a new BSD-licensed header so that future commonlib/bsd
code can build upon a common set of error values. I am making the
assumption here that the enum constants and the half-sentence fragments
of documentation next to them by themselves do not meet the threshold of
copyrightability.
Change-Id: I316cea70930f131e8e93d4218542ddb5ae4b63a2
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38420
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
These functions are only used in cbmem, so they can be made static.
Change-Id: I21f7d7c21064a8ae951e6d96b28c2ddcf52c0006
Signed-off-by: Jacob Garber <jgarber1@ualberta.ca>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33852
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Martin Roth <martinroth@google.com>
Make sure that the type of the loop index matches the type of the upper
bound. This fixes several -Wsign-compare warnings.
Change-Id: Iaa94ce93bc35d523bc782ad914bfd283606becac
Signed-off-by: Jacob Garber <jgarber1@ualberta.ca>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33850
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Martin Roth <martinroth@google.com>
Banner string format has been changed (CB:30935). We should update our
regular expression correspondingly.
Also add "verstage" into the stage search list since some boards (e.g.,
Kukui) might start console initialization at verstage.
Change-Id: I16eba3ac5e203e80b0bfd42a4294401dbccd4463
Signed-off-by: You-Cheng Syu <youcheng@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33779
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Until now the TCPA log wasn't working correctly.
* Refactor TCPA log code.
* Add TCPA log dump fucntion.
* Make TCPA log available in bootblock.
* Fix TCPA log formatting.
* Add x86 and Cavium memory for early log.
Change-Id: Ic93133531b84318f48940d34bded48cbae739c44
Signed-off-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/29563
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
The coreboot table entry containing the memory entries can have
fields unnaturally aligned in memory. Therefore one needs to perform
an aligned_memcpy() so that it doesn't cause faults on certain
architectures that assume naturally aligned accesses.
BUG=chromium:925961
Change-Id: I28365b204962ac89d65d046076d862b6f9374c06
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/c/31181
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Manoj Gupta <manojgupta@google.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Julius Werner <jwerner@chromium.org>
TEST=on Chromebook Kevin with 64bit userland, it works well.
Change-Id: If16065000214c6cff9c14a14c5b5f44faca38153
Signed-off-by: Adam Kallai <kadam@inf.u-szeged.hu>
Reviewed-on: https://review.coreboot.org/c/29978
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
aligned_memcpy() was introduced to fix issues with platforms that don't
allow unaligned accesses to areas mapped with /dev/mem, but we missed a
few spots. Fix them.
Change-Id: I97ea953455b41a50023ceaca7eb148d60e6b8097
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/29848
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Some Unix systems (GuixSD, NixOS) do not install programs like
Bash and Python to /usr/bin, and /usr/bin/env has to be used to
locate these instead.
Change-Id: I7546bcb881c532adc984577ecb0ee2ec4f2efe00
Signed-off-by: Yegor Timoshenko <yegortimoshenko@riseup.net>
Reviewed-on: https://review.coreboot.org/28953
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Its spreading copies got out of sync. And as it is not a standard header
but used in commonlib code, it belongs into commonlib. While we are at
it, always include it via GCC's `-include` switch.
Some Windows and BSD quirk handling went into the util copies. We always
guard from redefinitions now to prevent further issues.
Change-Id: I850414e6db1d799dce71ff2dc044e6a000ad2552
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/28927
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Check if all arguments are handled by getopt and if not print the usage.
Change-Id: Iccbb65ca768a62791af54afd9b7903495bc690af
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/27777
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Descriptions are taken from the files themselves or READMEs. Description
followed by a space with the language in marked up as code.
Change-Id: I5f91e85d1034736289aedf27de00df00db3ff19c
Signed-off-by: Tom Hiller <thrilleratplay@gmail.com>
Reviewed-on: https://review.coreboot.org/27563
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
compare_timestamp_entries will fail for entries that are different by
at least 2^32 since entry_stamp is 64-bit and the return for compare
is 32-bit. This change fixes compare_timestamps by actually comparing
the entries to return 1, -1 or 0 instead of doing math on them.
TEST=Verified that "cbmem -t" sorts entries correctly on previously
failing entries.
Change-Id: I67c3c4d1761715ecbf259935fabb22ce37c3966e
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/26357
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
If the timestamp entries are added out of order, the duration
calculation will be wrong.
AGESA collects timestamp data through all the stages. Then in AmdInitPost
it asks for a buffer to write TP_Perf_STRUCT into. agesawrapper will then
take the data and call timestamp_add on each entry. This results in
the entries being out of order.
TEST=Built firmware for grunt that manually added entries and then ran
cbmem -t/-T to verify the entries were in the correct order.
Change-Id: I6946a844b71d714141b3372e4c43807cfe3528ad
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Reviewed-on: https://review.coreboot.org/26168
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Reviewed-by: Martin Roth <martinroth@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
In case of console dump for only the last boot, cbmem utility checks
for a list of regex in provided order. When pre-cbmem console
overflows, "Pre-CBMEM <stage> console overflowed.. " message is added
before "... <stage> starting" message. This change fixes the order of
regex in cbmem utility to match this.
Test=Verified on soraka that "cbmem -1" correctly dumps the data
starting from Pre-CBMEM romstage overflowed.
Change-Id: I9c5667bbd02ed3e93ac77a4f42e87d754a062919
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/23800
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
The code flow is changed slightly to print the timestamp frequency from
either method of determining it.
BUG=b:70432544
TEST=Build and test cbmem -t -V
Change-Id: I02286fa67919e70a3592cdbcc1c9ca2991b7f385
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/22821
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Julius made some suggestions to fix/improve commit 46300aa2.
Implement those.
BUG=b:66681446
Change-Id: I6becac9ffdcc65745e88734dfb80d12b581584a1
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/21757
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
The cbmem utility has inherited some workarounds that originated
from the default 1 MiB mapping always working. This 1 MiB mmap
won't necessarily succeed if the 1 MiB encroaches on a subsequent
memory range that has different cacheability.
To fix this, map in only 4 KiB when the table size is not known which is
the case for any forwarding entry or any low table entries on x86. That
smaller mapping is then searched for a valid header. Once a valid header
is found the full table is mapped and parsed allowing a forwarding entry
to take precedence.
Lastly, the lbtable is kept mapped in such that other operations can
just operate on mapping that was previously parsed.
In order to allow multiple in-flight mappings a struct mapping was
added which caused the ripple within the code. However, there shouldn't
be any more reasons for putting weird heuristics for when to fail. If
the tables are bad then it's very much possible that mappings will fail.
Retrying when the exact sizes are already known won't fix those issues.
BUG=b:66681446
Change-Id: Ica0737aada8dc07311eae867e87ef2fd24eae98d
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/21718
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Since the mapping is const just make all the data structure accesses
const.
BUG=b:66681446
Change-Id: I018cf2f2bfea2e736b097ecd1242af19c878ecb5
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/21719
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Using sys/cdefs.h would come to mind,
however this include would not solve the build error.
Built and runtime tested on FreeBSD 12.0-CURRENT, r322031
Change-Id: I6ec9bc7fea72aa69a41439e002f381bd5e5b6bc6
Signed-off-by: Idwer Vollering <vidwer@gmail.com>
Reviewed-on: https://review.coreboot.org/20924
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
the __must_check function attribute is pretty much straight from the
linux kernel - used to encourage callers to consume function return
values.
Change-Id: I1812d957b745d6bebe2a8d34a9c4862316aa8530
Signed-off-by: Caveh Jalali <caveh@google.com>
Reviewed-on: https://review.coreboot.org/20881
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
I had a stupid. :( Asterisks have a special meaning in regexes, but I
just wanted to match three literal ones. This kills the regex parser.
Change-Id: Ia6149e72715d651c914583ed3235680ce5b7a2e0
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/20171
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com>
The 'cbmem -1' flag that cuts off console output before the last boot
will ignore content from earlier stages if it was truncated due to lack
of pre-CBMEM console space. This patch makes the "log truncated" message
more specific and adds it as an additional cut-off marker to 'cbmem -1'
to counteract that problem.
Also raise the log level of the coreboot banner one step to BIOS_NOTICE
to make it more likely to be included in the output for 'cbmem -1' to
find. (I believe NOTICE is reasonable but I wouldn't want to go as far
as WARN which should be reserved for actual problems. Of course this is
not ideal, but then again, our whole log-level system really isn't... it
would be better if we could make it always print a banner to the CBMEM
console without affecting the UART at the same time, but that would
require a larger amount of work.)
Change-Id: I58288593dfa757e14f4a9da4ffa7e27b0b66feb9
Reported-by: https://ticket.coreboot.org/issues/117
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/19720
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
There is code to adjust the mapping down if a mmap fails
at a physical address. However, if the address is less
than the page size of the system then the physical offset will
underflow. This can actually cause a kernel panic on when
operating on /dev/mem.
The failing condition happens when the requested mapping at 0
fails in the kernel. The fallback path is taken and page size
is subtracted from 0 making a very large offset. The PAT code
in the kernel fails with a BUG_ON in reserve_memtype() checking
start >= end. The kernel needs to be fixed as well, but this
fallback path is wrong as well.
BUG=b:38211793
Change-Id: I32b0c15b2f1aa43fc57656d5d2d5f0e4e90e94ef
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/19679
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Even though the persistent CBMEM console is obviously awesome, there may
be cases where we only want to look at console output from the last boot.
It's easy to tell where one boot ends and another begins from the banner
message that coreboot prints at the start of every stage, but in order
to make it easier to find that point (especially for external tools),
let's put that functionality straight into the cbmem utility with a new
command line flag. Use the POSIX/libc regular expression API to find the
banner string for maximum compatilibity, even though it's kinda icky.
Change-Id: Ic17383507a884d84de9a2a880380cb15b25708a1
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/19497
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com>
Reviewed-by: Sumeet R Pawnikar <sumeet.r.pawnikar@intel.com>
This patch allows the CBMEM console to persist across reboots, which
should greatly help post factum debugging of issues involving multiple
reboots. In order to prevent the console from filling up, it will
instead operate as a ring buffer that continues to evict the oldest
lines once full. (This means that if even a single boot doesn't fit into
the buffer, we will now drop the oldest lines whereas previous code
would've dropped the newest lines instead.)
The console control structure is modified in a sorta
backwards-compatible way, so that new readers can continue to work with
old console buffers and vice versa. When an old reader reads a new
buffer that has already once overflowed (i.e. is operating in true ring
buffer mode) it will print lines out of order, but it will at least
still print out the whole console content and not do any illegal memory
accesses (assuming it correctly implemented cursor overflow as it was
already possible before this patch).
BUG=chromium:651966
TEST=Rebooted and confirmed output repeatedly on a Kevin and a Falco.
Also confirmed correct behavior across suspend/resume for the latter.
Change-Id: Ifcbf59d58e1ad20995b98d111c4647281fbb45ff
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/18301
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
On some architectures (like AArch64), /dev/mem mappings outside of the
area marked as normal RAM use a memory type that does not support
unaligned accesses. The libc memcpy() implementation on these
architectures may not know or expect that and make an unaligned access
for certain source/dest/length alignments. Add a custom memcpy()
implementation that takes these restrictions into account and use it
anywhere we copy straight out of /dev/mem memory.
Change-Id: I03eece380a14a69d4be3805ed72fba640f6f7d9c
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/18300
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Julius Werner