tree 0df6153a2d812235b3defe835f40b9ed08684c92
parent 9de3f8710d5c46d35cd9869018c85e5aa51483b0
author Nikolai Artemiev <nartemiev@google.com> 1634733255 +1100
committer Nico Huber <nico.h@gmx.de> 1672359404 +0100

flash.h,flashchips.c: add writeprotect bit layout map to chips

This patch adds a register bit map `struct reg_bit_info`, with fields
for storing the register, bit index, and writability of each bit that
affects the chip's write protection. This allows writeprotect code to be
independent of the register layout of any specific chip. The new fields
have been filled out for example chips.

The representation is centered around describing how bits can be
accessed and modified, rather than the layout of registers. This is
generally easier to work with in code that needs to access specific bits
and typically requires specifying the locations of fewer bits overall.

Tested: flashrom --wp-{enable,disable,range,list,status} at end of patch series

Change-Id: Id08d77e6d4ca5109c0d698271146d026dbc21284
Signed-off-by: Nikolai Artemiev <nartemiev@google.com>
Original-Reviewed-on: https://review.coreboot.org/c/flashrom/+/58477
Original-Reviewed-by: Nico Huber <nico.h@gmx.de>
Original-Reviewed-by: Anastasia Klimchuk <aklm@chromium.org>
Reviewed-on: https://review.coreboot.org/c/flashrom-stable/+/70966
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>