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7be490758e
It's not valid to separately check the major and minor versions. The
proper minor check would be something like:
if (fmap->ver_major == FMAP_VER_MAJOR &&
fmap->ver_minor > FMAP_VER_MINOR)
ERROR();
But this code was alleged (at introduction in [1]) to have come from
cbfstool, and cbfstool doesn't bother with a minor version check. This
check is only for finding the FMAP while searching the flash; it isn't
actually here for integrity and compatibility purpose.
Drop the MINOR version check; align with cbfstool on the MAJOR version
check; and match the cbfstool comments for is_valid_fmap(), to emphasize
the lack of precision.
[1] Commit c82900b661 ("Add support to get layout from fmap (e.g.
coreboot rom)")
BRANCH=none
BUG=b:288327526
TEST=libflashrom + ChromiumOS flashmap
Change-Id: I984835579d3b257a2462906f1f5091b179891bd0
Signed-off-by: Brian Norris <briannorris@chromium.org>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/79060
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Anastasia Klimchuk <aklm@chromium.org>
flashrom README
===============
flashrom is a utility for detecting, reading, writing, verifying and erasing
flash chips. It is often used to flash BIOS/EFI/coreboot/firmware images
in-system using a supported mainboard, but it also supports flashing of network
cards (NICs), SATA controller cards, and other external devices which can
program flash chips.
It supports a wide range of flash chips (most commonly found in SOIC8, DIP8,
SOIC16, WSON8, PLCC32, DIP32, TSOP32, and TSOP40 packages), which use various
protocols such as LPC, FWH, parallel flash, or SPI.
Do not use flashrom on laptops (yet)! The embedded controller (EC) present in
many laptops might interact badly with any attempts to communicate with the
flash chip and may brick your laptop.
Please make a backup of your flash chip before writing to it.
Please see the flashrom(8) manpage :doc:`classic_cli_manpage`.
Building / installing / packaging
---------------------------------
flashrom supports building with **make** and **meson**.
TLDR, building with meson
"""""""""""""""""""""""""
::
meson setup builddir
meson compile -C builddir
meson test -C builddir
meson install -C builddir
For full detailed instructions, follow the information in
:doc:`dev_guide/building_from_source`
TLDR, building with make
""""""""""""""""""""""""
::
make
make install
For full detailed instructions, follow the information in
:doc:`dev_guide/building_with_make`
Contact
-------
The official flashrom website is:
https://www.flashrom.org/
For available contact methods see :doc:`contact`