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85b977151b
Since Meteor Lake, configuring region access for FREG9 and higher is necessary. This configuration is determined using BIOS_BM registers: BIOS_BM_RAP (Offset 0x118): BIOS Master Read Access Permissions. Each bit [15:0] corresponds to a region [15:0]. A set bit grants BIOS master read access. BIOS_BM_WAP (Offset 0x11c): BIOS Master Write Access Permissions. Each bit [15:0] corresponds to a region [15:0]. A set bit grants BIOS master write/erase access. Move CHIPSET_METEOR_LAKE to the bottom of the ich_chipset list to ensure that all the newer chipsets in the future will use BIOS_BM check by default. BUG=b:319773700, b:304439294 BUG=b:319336080 TEST=On MTL, use flashrom -VV to see correct FREG9 access TEST=On ADL, use flashrom -VV to see not break anything TEST=On APL, use flashrom -VV to see not break anything Change-Id: I1e06e7b3d470423a6014e623826d9234fdebfbf9 Signed-off-by: Hsuan Ting Chen <roccochen@chromium.org> Reviewed-on: https://review.coreboot.org/c/flashrom/+/81357 Reviewed-by: Jamie Ryu <jamie.m.ryu@intel.com> Reviewed-by: Nikolai Artemiev <nartemiev@google.com> Reviewed-by: Anastasia Klimchuk <aklm@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.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`