summaryrefslogtreecommitdiff
path: root/src
diff options
context:
space:
mode:
Diffstat (limited to 'src')
-rw-r--r--src/drivers/pc80/rtc/option.c30
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);
+ }
}