Add a driver to read and write EFI variables stored in a region device.
This is particullary useful for EDK2 as payload and allows to reuse
existing EFI tools to set/get options used by the firmware.
The write implementation is fault tolerant and doesn't corrupt the
variable store. A faulting write might result in using the old value
even though a 'newer' had been completely written.
Implemented basic unit tests for header corruption, writing existing data
and append new data into the store.
Initial firmware region state:
Initially the variable store region isn't formatted. Usually this is done
in the EDK2 payload when no valid firmware volume could be found.
It might be useful to do this offline or in coreboot to have a working
option store on the first boot or when it was corrupted.
Performance improvements:
Right now the code always checks if the firmware volume header is valid.
This could be optimised by caching the test result in heap. For write
operations it would be good to cache the end of the variable store in
the heap as well, instead of walking the whole store.
Reclaiming memory:
The EFI variable store is append write only. To update an existing
variable, first a new is written to the end of the store and then the
previous is marked invalid. This only works on PNOR flash that allow to
clear set bits, but keep cleared bits state.
This mechanisms allows a fault tolerant write, but it also requires to
"clean" the variable store for time to time. This cleaning would remove
variables that have been marked "deleted".
Such cleaning mechanism in turn must be fault tolerant and thus must use
a second parition in the SPI flash as backup/working region.
For now to cleaning is done in coreboot.
Fault checking:
The driver should check if a previous write was successfull and if not mark
variables as deleted on the next operation.
Tested and working:
- Could enumerate all existing variables
- Could read variables
- Could write variables
Change-Id: I8079f71d29da5dc2db956fc68bef1486fe3906bb
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Unassigned tag is defined to emulate an unmapped PCI BAR resource.
This resource is not mapped into host physical address and hence
should not be picked up by memranges_add_resources().
Change-Id: If7a5c437d486b80d798496b985efd80526f13c63
Signed-off-by: Shuo Liu <shuo.liu@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66451
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jan Dabros <jsd@semihalf.com>
IORESOURCE_ASSIGNED is used to indicate the resource is actually mapped
host physical address space. E.g. PCI BAR resources not mapped are
not regarded as assigned.
In src/include/device/device.h, standard macros, e.g. ram_resource,
mmio_resource, io_resource, et al, are all following the usage above.
This patch updates the bootmem-test and memrange-test to follow the
usage as well.
Change-Id: Ifc19302482038267cef01321a46a72d90ca76d35
Signed-off-by: Shuo Liu <shuo.liu@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66450
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Jonathan Zhang <jonzhang@fb.com>
Reviewed-by: Jan Dabros <jsd@semihalf.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This patch is based on similar changes [1] done in Depthcharge projects,
which aimed to provide unified way to build host-side programs for
testing internal code. New test tools might benefit from it by having
same base code as unit-tests.
[1] https://crrev.com/c/3412108
TEST=make unit-tests
TEST=COV=1 make unit-tests coverage-report
Signed-off-by: Jakub Czapiga <jacz@semihalf.com>
Change-Id: Iac4517ab6146fa3f2d2b7a20df54601ab2d04c3d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63637
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Replace 'struct lb_uint64' with 'typedef __aligned(4) uint64_t
lb_uint64_t', and remove unpack_lb64/pack_lb64 functions since it's no
longer needed.
Also replace 'struct cbuint64' with 'cb_uint64_t' and remove
'cb_unpack64' in libpayload for compatible with lb_uint64_t.
Signed-off-by: Jianjun Wang <jianjun.wang@mediatek.com>
Change-Id: If6b037e4403a8000625f4a5fb8d20311fe76200a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63494
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
The ACPI RSDP can only be found in:
- legacy BIOS region
- via UEFI service
On some systems like ARM that legacy BIOS region is not an option, so
to avoid needing UEFI it makes sense to expose the RSDP via a coreboot
table entry.
This also adds the respective unit test.
Change-Id: I591312a2c48f0cbbb03b2787e4b365e9c932afff
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62573
Reviewed-by: Lance Zhao
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
cb_err_t was meant to be used in place of `enum cb_err` in all
situations, but the choice to use a typedef here seems to be
controversial. We should not be arbitrarily using two different
identifiers for the same thing across the codebase, so since there are
no use cases for serializing enum cb_err at the moment (which would be
the primary reason to typedef a fixed-width integer instead), remove
cb_err_t again for now.
Signed-off-by: Julius Werner <jwerner@chromium.org>
Change-Id: Iaec36210d129db26d51f0a105d3de070c03b686b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62600
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
This patch aims to make timestamps more consistent in naming,
to follow one pattern. Until now there were many naming patterns:
- TS_START_*/TS_END_*
- TS_BEFORE_*/TS_AFTER_*
- TS_*_START/TS_*_END
This change also aims to indicate, that these timestamps can be used
to create time-ranges, e.g. from TS_BOOTBLOCK_START to TS_BOOTBLOCK_END.
Signed-off-by: Jakub Czapiga <jacz@semihalf.com>
Change-Id: I533e32392224d9b67c37e6a67987b09bf1cf51c6
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62019
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
This patch applies clang-format settings to most of tests files. Some
files were fixed "by-hand" to exclude some lines, which whould be less
readable after automatic style fixing.
Moreover, some comments (mostly in tests/lib/edid-test.c) were adjusted
to match coreboot coding style guidelines.
Change-Id: I69f25a7b6d8265800c731754e2fbb2255f482134
Signed-off-by: Jakub Czapiga <jacz@semihalf.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/60970
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
Current log2_ceil(x) is defined as log2(x * 2 - 1). When x is larger
than (1 << 31), (x * 2 - 1) won't fit in u32, leading to incorrect
result. Therefore, correct it as (log2(x - 1) + 1). Also add unit tests
for inline functions in lib.h.
BUG=none
TEST=make tests/lib/lib-test
BRANCH=none
Change-Id: If868f793b909a6ad7fc48a7affac15e2c714fa2e
Signed-off-by: Yu-Ping Wu <yupingso@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59834
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Unit tests fail on clang 13.0 because Cmocka's main() function is
declared with return type int, but through some of our chain-include
games it sometimes gets coreboot's main_decl.h which declares the
function as void. Compilers have traditionally always been very
laissez-faire about the signature of the main function, but it seems
that clang has been getting more strict by default recently. Explicitly
disable the related warning to shut it up.
Signed-off-by: Julius Werner <jwerner@chromium.org>
Change-Id: I867c9dac659be86e7b7cf4cc41d6fa105aa9ac41
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59815
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jakub Czapiga <jacz@semihalf.com>
Unit tests fail on clang 13.0 with a cryptic
error: _timestamp_size changed binding to STB_WEAK [-Werror,-Wsource-mgr]
Probably something related to the weird things we do to mock memlayout
areas. Too lazy to track it down. Let's just disable this
(clang-specific, not properly documented) warning flag.
Signed-off-by: Julius Werner <jwerner@chromium.org>
Change-Id: Ie49c9eef3c74592c068c899c6717621dbcb9f609
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59814
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jakub Czapiga <jacz@semihalf.com>
Remove unnecessary escape bachslashes from:
addr="$(echo \"$$$$sym_line\" ...
The 'echo' will print output line with double quote characters, which
then will be included in the values passed to --add-symbol. This can
cause errors.
Change-Id: I6023515191d6c236bf57870159a35d518f25e9d8
Reported-by: Yu-Ping Wu <yupingso@chromium.org>
Signed-off-by: Jakub Czapiga <jacz@semihalf.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59858
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@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>
List of changes:
1. Create Module Type macros as per Memory Type
(i.e. DDR2/DDR3/DDR4/DDR5/LPDDR4/LPDDR5) and fix compilation
issue due to renaming of existing macros due to scoping the Memory
Type.
2. Use dedicated Memory Type and Module type for `Form Factor`
and `TypeDetail` conversion using `get_spd_info()` function.
3. Create a new API (convert_form_factor_to_module_type()) for
`Form Factor` to 'Module type' conversion as per `Memory Type`.
4. Add new argument as `Memory Type` to
smbios_form_factor_to_spd_mod_type() so that it can internally
call convert_form_factor_to_module_type() for `Module Type`
conversion.
5. Update `test_smbios_form_factor_to_spd_mod_type()` to
accommodate different memory types.
6. Skip fixed module type to form factor conversion using DDR2 SPD4
specification (inside dimm_info_fill()).
Refer to datasheet SPD4.1.2.M-1 for LPDDRx and SPD4.1.2.L-3 for DDRx.
BUG=b:194659789
TEST=Refer to dmidecode -t 17 output as below:
Without this code change:
Handle 0x0012, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x000A
Error Information Handle: Not Provided
Total Width: 16 bits
Data Width: 16 bits
Size: 2048 MB
Form Factor: Unknown
....
With this code change:
Handle 0x0012, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x000A
Error Information Handle: Not Provided
Total Width: 16 bits
Data Width: 16 bits
Size: 2048 MB
Form Factor: Row Of Chips
....
Change-Id: Ia337ac8f50b61ae78d86a07c7a86aa9c248bad50
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56628
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jakub Czapiga <jacz@semihalf.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Patrick Rudolph
Shuo Liu
Vinod Polimera
Bill XIE
Eric Lai
Jakub Czapiga
Jianjun Wang
Paul Menzel
Arthur Heymans
Julius Werner
Yu-Ping Wu
Subrata Banik