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vendorcode/chromeos/vbnv: Add CMOS init function 

Add cmos init helper function.
This function saves the Vboot NV data, calls cmos init
and restores the Vboot NV data.

Change-Id: I8475f23d849fb5b5a2d16738b4d5e99f112883da
Signed-off-by: Jagadish Krishnamoorthy <jagadish.krishnamoorthy@intel.com>
Reviewed-on: https://review.coreboot.org/14898
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
This commit is contained in:
Jagadish Krishnamoorthy 2016-05-18 15:18:58 -07:00 committed by Aaron Durbin
parent f8841120b2
commit e2e561d31f
2 changed files with 14 additions and 0 deletions
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1
src/vendorcode/google/chromeos/vbnv.h
View File

@ -29,6 +29,7 @@ int vboot_wants_oprom(void);
/* CMOS backend */ /* CMOS backend */
void read_vbnv_cmos(uint8_t *vbnv_copy); void read_vbnv_cmos(uint8_t *vbnv_copy);
void save_vbnv_cmos(const uint8_t *vbnv_copy); void save_vbnv_cmos(const uint8_t *vbnv_copy);
void init_vbnv_cmos(int rtc_fail);
/* Flash backend */ /* Flash backend */
void read_vbnv_flash(uint8_t *vbnv_copy); void read_vbnv_flash(uint8_t *vbnv_copy);

13
src/vendorcode/google/chromeos/vbnv_cmos.c
View File

@ -51,6 +51,19 @@ void save_vbnv_cmos(const uint8_t *vbnv_copy)
cmos_write(vbnv_copy[i], CONFIG_VBNV_OFFSET + 14 + i); cmos_write(vbnv_copy[i], CONFIG_VBNV_OFFSET + 14 + i);
} }
void init_vbnv_cmos(int rtc_fail)
{
uint8_t vbnv[VBNV_BLOCK_SIZE];
if (rtc_fail)
read_vbnv_cmos(vbnv);
cmos_init(rtc_fail);
if (rtc_fail)
save_vbnv_cmos(vbnv);
}
#if IS_ENABLED(CONFIG_CHROMEOS_VBNV_CMOS_BACKUP_TO_FLASH) #if IS_ENABLED(CONFIG_CHROMEOS_VBNV_CMOS_BACKUP_TO_FLASH)
static void back_up_vbnv_cmos(void *unused) static void back_up_vbnv_cmos(void *unused)
{ {