diff options
Diffstat (limited to 'src/drivers/pc80')
| -rw-r--r-- | src/drivers/pc80/rtc/option.c | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/src/drivers/pc80/rtc/option.c b/src/drivers/pc80/rtc/option.c index bb697dfba1..dc78dbbf30 100644 --- a/src/drivers/pc80/rtc/option.c +++ b/src/drivers/pc80/rtc/option.c @@ -239,25 +239,25 @@ int cmos_lb_cks_valid(void) return cmos_checksum_valid(LB_CKS_RANGE_START, LB_CKS_RANGE_END, LB_CKS_LOC); } -static void cmos_load_defaults(void) + +void sanitize_cmos(void) { + const unsigned char *cmos_default; + const bool cmos_need_reset = + CONFIG(STATIC_OPTION_TABLE) || cmos_error() || !cmos_lb_cks_valid(); size_t length = 128; size_t i; - const unsigned char *cmos_default = - cbfs_boot_map_with_leak("cmos.default", - CBFS_COMPONENT_CMOS_DEFAULT, &length); - if (!cmos_default) - return; + if (CONFIG(TPM_MEASURED_BOOT) || cmos_need_reset) { + cmos_default = cbfs_boot_map_with_leak("cmos.default", + CBFS_COMPONENT_CMOS_DEFAULT, &length); - u8 control_state = cmos_disable_rtc(); - for (i = 14; i < MIN(128, length); i++) - cmos_write_inner(cmos_default[i], i); - cmos_restore_rtc(control_state); -} + if (!cmos_default || !cmos_need_reset) + return; -void sanitize_cmos(void) -{ - if (cmos_error() || !cmos_lb_cks_valid() || CONFIG(STATIC_OPTION_TABLE)) - cmos_load_defaults(); + u8 control_state = cmos_disable_rtc(); + for (i = 14; i < MIN(128, length); i++) + cmos_write_inner(cmos_default[i], i); + cmos_restore_rtc(control_state); + } } |