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| author | Nikolai Artemiev <nartemiev@google.com> | 2022-03-08 01:07:01 +1100 |
|---|---|---|
| committer | Edward O'Callaghan <quasisec@chromium.org> | 2022-04-05 23:50:27 +0000 |
| commit | bd2d070f9fb2c8d89276a9e17ae7e4db1356d26e (patch) | |
| tree | 5e1cf2d63e3d1a2ed021e869ae521cadfe6208f0 /writeprotect.c | |
| parent | 9b20174fda038ef633af2163c9b1570f4dbf9a37 (diff) | |
| download | flashrom-bd2d070f9fb2c8d89276a9e17ae7e4db1356d26e.tar.gz flashrom-bd2d070f9fb2c8d89276a9e17ae7e4db1356d26e.tar.bz2 flashrom-bd2d070f9fb2c8d89276a9e17ae7e4db1356d26e.zip | |
writeprotect.c: refactor and fix wp_mode functions
This is a follow up on commit 12dbc4e04508aecfff53ad95b6f68865da1b4f07.
Use a lookup table in get_wp_mode() and drop the srp_bit_present check,
since a chip without SRP is just FLASHROM_WP_MODE_DISABLED.
Add a srp_bit_present check to set_wp_mode() if the mode requires it.
BUG=b:182223106
BRANCH=none
TEST=flashrom --wp-{enable,disable,status} on AMD dut
Change-Id: Ib6c347453f9216e5816e4ed35bf9783fd3c720e0
Signed-off-by: Nikolai Artemiev <nartemiev@google.com>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/62643
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Anastasia Klimchuk <aklm@chromium.org>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
Diffstat (limited to 'writeprotect.c')
| -rw-r--r-- | writeprotect.c | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/writeprotect.c b/writeprotect.c index 6b3bbcf3..58935932 100644 --- a/writeprotect.c +++ b/writeprotect.c @@ -351,16 +351,17 @@ static int set_wp_range(struct wp_bits *bits, struct flashctx *flash, const stru /** Get the mode selected by a WP configuration. */ static int get_wp_mode(enum flashrom_wp_mode *mode, const struct wp_bits *bits) { - if (!bits->srp_bit_present) - return FLASHROM_WP_ERR_CHIP_UNSUPPORTED; - - if (bits->srl_bit_present && bits->srl == 1) { - *mode = bits->srp ? FLASHROM_WP_MODE_PERMANENT : - FLASHROM_WP_MODE_POWER_CYCLE; - } else { - *mode = bits->srp ? FLASHROM_WP_MODE_HARDWARE : - FLASHROM_WP_MODE_DISABLED; - } + const enum flashrom_wp_mode wp_modes[2][2] = { + { + FLASHROM_WP_MODE_DISABLED, /* srl=0, srp=0 */ + FLASHROM_WP_MODE_HARDWARE, /* srl=0, srp=1 */ + }, { + FLASHROM_WP_MODE_POWER_CYCLE, /* srl=1, srp=0 */ + FLASHROM_WP_MODE_PERMANENT, /* srl=1, srp=1 */ + }, + }; + + *mode = wp_modes[bits->srl][bits->srp]; return FLASHROM_WP_OK; } @@ -375,6 +376,9 @@ static int set_wp_mode(struct wp_bits *bits, const enum flashrom_wp_mode mode) return FLASHROM_WP_OK; case FLASHROM_WP_MODE_HARDWARE: + if (!bits->srp_bit_present) + return FLASHROM_WP_ERR_CHIP_UNSUPPORTED; + bits->srl = 0; bits->srp = 1; return FLASHROM_WP_OK; |