diff options
Diffstat (limited to 'src/vendorcode/google/chromeos/vbnv.c')
| -rw-r--r-- | src/vendorcode/google/chromeos/vbnv.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/src/vendorcode/google/chromeos/vbnv.c b/src/vendorcode/google/chromeos/vbnv.c index 92f03fbfe3..baccb2313d 100644 --- a/src/vendorcode/google/chromeos/vbnv.c +++ b/src/vendorcode/google/chromeos/vbnv.c @@ -85,8 +85,12 @@ int verify_vbnv(uint8_t *vbnv_copy) (crc8_vbnv(vbnv_copy, CRC_OFFSET) == vbnv_copy[CRC_OFFSET]); } -/* Read VBNV data from configured storage backend. */ -void read_vbnv(uint8_t *vbnv_copy) +/* + * Read VBNV data from configured storage backend. + * If VBNV verification fails, reset the vbnv copy. + * Returns 1 if write-back of vbnv copy is required. Else, returns 0. + */ +int read_vbnv(uint8_t *vbnv_copy) { if (IS_ENABLED(CONFIG_CHROMEOS_VBNV_CMOS)) read_vbnv_cmos(vbnv_copy); @@ -96,8 +100,11 @@ void read_vbnv(uint8_t *vbnv_copy) read_vbnv_flash(vbnv_copy); /* Check data for consistency */ - if (!verify_vbnv(vbnv_copy)) - reset_vbnv(vbnv_copy); + if (verify_vbnv(vbnv_copy)) + return 0; + + reset_vbnv(vbnv_copy); + return 1; } /* |