diff options
| author | Edward O'Callaghan <quasisec@google.com> | 2022-05-16 15:38:18 +1000 |
|---|---|---|
| committer | Edward O'Callaghan <quasisec@chromium.org> | 2022-06-21 03:38:49 +0000 |
| commit | f630a1623f84b452873e3fc69d608925d90fd85b (patch) | |
| tree | 3656eb2d97bc0d869d0e6cb50abe3baa643beb7c /include | |
| parent | fac9fc28f5a6cadf7c94264f429faa597a2058ac (diff) | |
| download | flashrom-f630a1623f84b452873e3fc69d608925d90fd85b.tar.gz flashrom-f630a1623f84b452873e3fc69d608925d90fd85b.tar.bz2 flashrom-f630a1623f84b452873e3fc69d608925d90fd85b.zip | |
writeprotect.c: Allow opaque masters to hook {read,write}_register()
Allow specialisation in opaque masters, such as ichspi hwseq, to
write to status registers.
Also update the dispatch logic in libflashrom to call wp code when
status register access functions are provided by an opaque master.
BUG=none
BRANCH=none
TEST=flashrom --wp-status on AMD and Intel DUTs
Change-Id: I3ab0d7f5f48338c8ecb118a69651c203fbc516ac
Signed-off-by: Edward O'Callaghan <quasisec@google.com>
Signed-off-by: Nikolai Artemiev <nartemiev@google.com>
Co-Authored-by: Nikolai Artemiev <nartemiev@google.com>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/64375
Reviewed-by: Anastasia Klimchuk <aklm@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/programmer.h | 8 | ||||
| -rw-r--r-- | include/writeprotect.h | 3 |
2 files changed, 11 insertions, 0 deletions
diff --git a/include/programmer.h b/include/programmer.h index 5fb06260..eaf4a983 100644 --- a/include/programmer.h +++ b/include/programmer.h @@ -402,6 +402,14 @@ struct opaque_master { int (*read) (struct flashctx *flash, uint8_t *buf, unsigned int start, unsigned int len); int (*write) (struct flashctx *flash, const uint8_t *buf, unsigned int start, unsigned int len); int (*erase) (struct flashctx *flash, unsigned int blockaddr, unsigned int blocklen); + /* + * Callbacks for accessing flash registers. An opaque programmer must + * provide these functions for writeprotect operations to be available, + * unless it provides custom wp operations instead. + */ + int (*read_register)(const struct flashctx *flash, enum flash_reg reg, uint8_t *value); + int (*write_register)(const struct flashctx *flash, enum flash_reg reg, uint8_t value); + /* Callbacks for overiding default writeprotect operations with custom ones. */ enum flashrom_wp_result (*wp_write_cfg)(struct flashctx *, const struct flashrom_wp_cfg *); enum flashrom_wp_result (*wp_read_cfg)(struct flashrom_wp_cfg *, struct flashctx *); enum flashrom_wp_result (*wp_get_ranges)(struct flashrom_wp_ranges **, struct flashctx *); diff --git a/include/writeprotect.h b/include/writeprotect.h index e27403dc..12926c4d 100644 --- a/include/writeprotect.h +++ b/include/writeprotect.h @@ -86,4 +86,7 @@ enum flashrom_wp_result wp_read_cfg(struct flashrom_wp_cfg *, struct flashrom_fl /* Get a list of protection ranges supported by the chip */ enum flashrom_wp_result wp_get_available_ranges(struct flashrom_wp_ranges **, struct flashrom_flashctx *); +/* Checks if writeprotect functions can be used with the current flash/programmer */ +bool wp_operations_available(struct flashrom_flashctx *); + #endif /* !__WRITEPROTECT_H__ */ |