diff options
Diffstat (limited to 'firmware/lib/vboot_nvstorage.c')
| -rw-r--r-- | firmware/lib/vboot_nvstorage.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/firmware/lib/vboot_nvstorage.c b/firmware/lib/vboot_nvstorage.c index 6a21bfe8..403ce30f 100644 --- a/firmware/lib/vboot_nvstorage.c +++ b/firmware/lib/vboot_nvstorage.c @@ -42,6 +42,8 @@ #define DEV_BOOT_SIGNED_ONLY_MASK 0x02 #define DEV_BOOT_LEGACY_MASK 0x04 #define DEV_BOOT_FASTBOOT_FULL_CAP_MASK 0x08 +#define DEV_DEFAULT_BOOT_MASK 0x30 +#define DEV_DEFAULT_BOOT_SHIFT 4 /* Number of bits to shift */ #define TPM_FLAGS_OFFSET 5 #define TPM_CLEAR_OWNER_REQUEST 0x01 @@ -151,6 +153,11 @@ int VbNvGet(VbNvContext *context, VbNvParam param, uint32_t *dest) *dest = (raw[DEV_FLAGS_OFFSET] & DEV_BOOT_LEGACY_MASK ? 1 : 0); return 0; + case VBNV_DEV_DEFAULT_BOOT: + *dest = (raw[DEV_FLAGS_OFFSET] & DEV_DEFAULT_BOOT_MASK) + >> DEV_DEFAULT_BOOT_SHIFT; + return 0; + case VBNV_DEV_BOOT_SIGNED_ONLY: *dest = (raw[DEV_FLAGS_OFFSET] & DEV_BOOT_SIGNED_ONLY_MASK ? 1 : 0); @@ -308,6 +315,17 @@ int VbNvSet(VbNvContext *context, VbNvParam param, uint32_t value) raw[DEV_FLAGS_OFFSET] &= ~DEV_BOOT_LEGACY_MASK; break; + case VBNV_DEV_DEFAULT_BOOT: + /* Map out of range values to boot disk */ + if (value > (DEV_DEFAULT_BOOT_MASK >> + DEV_DEFAULT_BOOT_SHIFT)) + value = VBNV_DEV_DEFAULT_BOOT_DISK; + + raw[DEV_FLAGS_OFFSET] &= ~DEV_DEFAULT_BOOT_MASK; + raw[DEV_FLAGS_OFFSET] |= (uint8_t)value << + DEV_DEFAULT_BOOT_SHIFT; + break; + case VBNV_DEV_BOOT_SIGNED_ONLY: if (value) raw[DEV_FLAGS_OFFSET] |= DEV_BOOT_SIGNED_ONLY_MASK; |