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mirror of https://review.coreboot.org/flashrom.git synced 2025-04-27 15:12:36 +02:00
Tyler Wang bb8e6f904b flashchips: Add write-protect support for GD25LQ255E
datasheet: https://www.gigadevice.com.cn/Public/Uploads/uploadfile/files/20221129/DS-00562-GD25LQ255E-Rev1.1.pdf

BUG=b:311336475
TEST=Verified on karis

w/o this patch:
$ flashrom_tester --flashrom_binary ./flashrom internal Lock_top_quad
  --> Failed

w/ this patch:
$ flashrom_tester --flashrom_binary ./flashrom internal Lock_top_quad
  --> Pass

This lock_top_quad test did(copied from partial_lock_test()):
* Disable hardware WP so we can modify the protected range.
* Then enable software WP so the range is enforced and enable
  hardware WP so that flashrom does not disable software WP during the
  operation.
* Check that we cannot write to the protected region.
* Check that we can write to the non protected region.

Change-Id: I1425e931433c00caceaabc6037a79099d6d5eac5
Signed-off-by: Tyler Wang <tyler.wang@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/79460
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nikolai Artemiev <nartemiev@google.com>
Reviewed-by: Hsuan-ting Chen <roccochen@google.com>
2024-01-05 03:55:57 +00:00
2024-01-05 03:54:45 +00:00
2023-12-21 22:38:32 +00:00
2023-03-01 09:40:52 +00:00
2007-09-08 14:36:01 +00:00
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2023-04-24 13:30:12 +00:00
2019-07-31 08:26:59 +00:00
2023-05-07 08:36:39 +00:00

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`
Description
No description provided
Readme 75 MiB
Languages
C 90.2%
Rust 5%
Shell 2%
Makefile 1.6%
Meson 1.2%