diff options
Diffstat (limited to 'src/soc/amd/picasso/psp_verstage')
| -rw-r--r-- | src/soc/amd/picasso/psp_verstage/psp_verstage.c | 22 | ||||
| -rw-r--r-- | src/soc/amd/picasso/psp_verstage/psp_verstage.h | 1 |
2 files changed, 22 insertions, 1 deletions
diff --git a/src/soc/amd/picasso/psp_verstage/psp_verstage.c b/src/soc/amd/picasso/psp_verstage/psp_verstage.c index 55687976df..005c8b0ac9 100644 --- a/src/soc/amd/picasso/psp_verstage/psp_verstage.c +++ b/src/soc/amd/picasso/psp_verstage/psp_verstage.c @@ -5,10 +5,11 @@ #include <bl_uapp/bl_syscall_public.h> #include <boot_device.h> #include <cbfs.h> -#include <commonlib/region.h> #include <console/console.h> #include <fmap.h> +#include <pc80/mc146818rtc.h> #include <soc/psp_transfer.h> +#include <security/vboot/vbnv.h> #include <security/vboot/misc.h> #include <security/vboot/symbols.h> #include <security/vboot/vboot_common.h> @@ -35,6 +36,22 @@ static void reboot_into_recovery(struct vb2_context *ctx, uint32_t subcode) vboot_reboot(); } +static uint32_t check_cmos_recovery(void) +{ + /* Only reset if cmos is valid */ + if (vbnv_cmos_failed()) + return 0; + + /* If the byte is set, clear it, then return error to reboot */ + if (cmos_read(CMOS_RECOVERY_BYTE) == CMOS_RECOVERY_MAGIC_VAL) { + cmos_write(0x00, CMOS_RECOVERY_BYTE); + printk(BIOS_DEBUG, "Reboot into recovery requested by coreboot\n"); + return POSTCODE_CMOS_RECOVERY; + } + + return 0; +} + static uintptr_t locate_amdfw(const char *name, struct region_device *rdev) { struct cbfsf fh; @@ -216,6 +233,9 @@ void Main(void) vb2api_relocate(_vboot2_work, _vboot2_work, VB2_FIRMWARE_WORKBUF_RECOMMENDED_SIZE, &ctx); + retval = check_cmos_recovery(); + if (retval) + goto err; post_code(POSTCODE_SAVE_BUFFERS); retval = save_buffers(&ctx); diff --git a/src/soc/amd/picasso/psp_verstage/psp_verstage.h b/src/soc/amd/picasso/psp_verstage/psp_verstage.h index 3c7574d82b..ef5c452500 100644 --- a/src/soc/amd/picasso/psp_verstage/psp_verstage.h +++ b/src/soc/amd/picasso/psp_verstage/psp_verstage.h @@ -31,6 +31,7 @@ #define POSTCODE_UPDATE_PSP_BIOS_DIR_ERROR 0xC7 #define POSTCODE_FMAP_REGION_MISSING 0xC8 #define POSTCODE_AMD_FW_MISSING 0xC9 +#define POSTCODE_CMOS_RECOVERY 0xCA #define POSTCODE_UNMAP_SPI_ROM 0xF0 #define POSTCODE_UNMAP_FCH_DEVICES 0xF1 |