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f5d1bed6d4
The function for reprogramming on the fly was using the default configuration O_ST_M25P as a base and the position 2 as the position to reprogram. Position 2 corresponds to JEDEC_SE which is often useful for chip erase (when less than whole chip needs to be erased). This patch changes the default position to reprogram to 4, which corresponds to JEDEC_REMS. It is used less often, but if it needs to be used, it will be discovered missing and reprogrammed back. For erase opcodes, there is usually several of them available. So if one is missing, erase still can be performed with the remaining ones. However, this hides the fact that one of available erase opcodes is missing (it won't be reprogrammed back), and also it gives non-optimal erase layout. Context: https://ticket.coreboot.org/issues/556 Change-Id: I6bc855daedf0af2e8de191f23a3512de3ebc3fef Signed-off-by: Anastasia Klimchuk <aklm@flashrom.org> Reviewed-on: https://review.coreboot.org/c/flashrom/+/84567 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nikolai Artemiev <nartemiev@google.com>
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 is built with **meson**. TLDR:
::
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`
Contact
-------
The official flashrom website is:
https://www.flashrom.org/
For available contact methods see :doc:`contact`