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| author | Nikolai Artemiev <nartemiev@google.com> | 2022-11-21 19:29:57 +1100 |
|---|---|---|
| committer | Edward O'Callaghan <quasisec@chromium.org> | 2023-03-03 05:52:20 +0000 |
| commit | 29a3a09f9155e5de69d6d2a4bf582a9e09b8e0a4 (patch) | |
| tree | cb0b381aa39c16acd78446f8d9f24c5d141250bc /include | |
| parent | 1d6d23bee2843b4f3a2d3676a7a75f92aa8574c4 (diff) | |
| download | flashrom-29a3a09f9155e5de69d6d2a4bf582a9e09b8e0a4.tar.gz flashrom-29a3a09f9155e5de69d6d2a4bf582a9e09b8e0a4.tar.bz2 flashrom-29a3a09f9155e5de69d6d2a4bf582a9e09b8e0a4.zip | |
writeprotect: Add function to get register values and WP bit masks
Add a new wp_cfg_to_reg_values() function that takes a generic wp_cfg
instance and returns the chip-specific values that need to be written to
the chip's registers to enable the specified protection range/mode.
The function returns three values for each chip register:
- reg_values[reg] - Value writeprotect will write to reg
- bit_masks[reg] - Bit mask for WP-related bits in reg
- write_masks[reg] - Bit mask for writable WP-related bits in reg
(i.e. the ones writeprotect will try to write)
BUG=b:260019525,b:259013033,260020006
BRANCH=none
TEST=ninja test
Change-Id: Ib2a47153b230c9f82bb4eca357c335f2abbacc20
Signed-off-by: Nikolai Artemiev <nartemiev@google.com>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/69847
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Sergii Dmytruk <sergii.dmytruk@3mdeb.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/writeprotect.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/writeprotect.h b/include/writeprotect.h index 12926c4d..7ceed079 100644 --- a/include/writeprotect.h +++ b/include/writeprotect.h @@ -89,4 +89,10 @@ enum flashrom_wp_result wp_get_available_ranges(struct flashrom_wp_ranges **, st /* Checks if writeprotect functions can be used with the current flash/programmer */ bool wp_operations_available(struct flashrom_flashctx *); +/* + * Converts a writeprotect config to register values and masks that indicate which register bits affect WP state. + * reg_values, bit_masks, and write_masks must all have length of at least MAX_REGISTERS. + */ +enum flashrom_wp_result wp_cfg_to_reg_values(uint8_t *reg_values, uint8_t *bit_masks, uint8_t *write_masks, struct flashrom_flashctx *, const struct flashrom_wp_cfg *); + #endif /* !__WRITEPROTECT_H__ */ |