diff options
Diffstat (limited to 'src/vendorcode/google/chromeos/vbnv.c')
| -rw-r--r-- | src/vendorcode/google/chromeos/vbnv.c | 26 |
1 files changed, 20 insertions, 6 deletions
diff --git a/src/vendorcode/google/chromeos/vbnv.c b/src/vendorcode/google/chromeos/vbnv.c index 3f333f7211..2a2faf9e96 100644 --- a/src/vendorcode/google/chromeos/vbnv.c +++ b/src/vendorcode/google/chromeos/vbnv.c @@ -77,25 +77,39 @@ static uint8_t crc8(const uint8_t * data, int len) return (uint8_t) (crc >> 8); } -static void vbnv_setup(void) +void read_vbnv(uint8_t *vbnv_copy) { int i; for (i = 0; i < CONFIG_VBNV_SIZE; i++) - vbnv[i] = cmos_read(CONFIG_VBNV_OFFSET + 14 + i); + vbnv_copy[i] = cmos_read(CONFIG_VBNV_OFFSET + 14 + i); /* Check data for consistency */ - if ((HEADER_SIGNATURE != (vbnv[HEADER_OFFSET] & HEADER_MASK)) - || (crc8(vbnv, CRC_OFFSET) != vbnv[CRC_OFFSET])) { + if ((HEADER_SIGNATURE != (vbnv_copy[HEADER_OFFSET] & HEADER_MASK)) + || (crc8(vbnv_copy, CRC_OFFSET) != vbnv_copy[CRC_OFFSET])) { /* Data is inconsistent (bad CRC or header), * so reset to defaults */ - memset(vbnv, 0, VBNV_BLOCK_SIZE); - vbnv[HEADER_OFFSET] = + memset(vbnv_copy, 0, VBNV_BLOCK_SIZE); + vbnv_copy[HEADER_OFFSET] = (HEADER_SIGNATURE | HEADER_FIRMWARE_SETTINGS_RESET | HEADER_KERNEL_SETTINGS_RESET); } +} + +void save_vbnv(const uint8_t *vbnv_copy) +{ + int i; + + for (i = 0; i < CONFIG_VBNV_SIZE; i++) + cmos_write(vbnv_copy[i], CONFIG_VBNV_OFFSET + 14 + i); +} + + +static void vbnv_setup(void) +{ + read_vbnv(vbnv); vbnv_initialized = 1; } |