diff options
Diffstat (limited to 'src/drivers/pc80/rtc/mc146818rtc_boot.c')
| -rw-r--r-- | src/drivers/pc80/rtc/mc146818rtc_boot.c | 21 |
1 files changed, 4 insertions, 17 deletions
diff --git a/src/drivers/pc80/rtc/mc146818rtc_boot.c b/src/drivers/pc80/rtc/mc146818rtc_boot.c index 2998c73baa..e599affd2d 100644 --- a/src/drivers/pc80/rtc/mc146818rtc_boot.c +++ b/src/drivers/pc80/rtc/mc146818rtc_boot.c @@ -19,27 +19,14 @@ #if CONFIG(USE_OPTION_TABLE) #include <option_table.h> -int cmos_chksum_valid(void) +int cmos_lb_cks_valid(void) { - unsigned char addr; - u16 sum, old_sum; - - sum = 0; - /* Compute the cmos checksum */ - for (addr = LB_CKS_RANGE_START; addr <= LB_CKS_RANGE_END; addr++) - sum += cmos_read(addr); - - /* Read the stored checksum */ - old_sum = cmos_read(LB_CKS_LOC) << 8; - old_sum |= cmos_read(LB_CKS_LOC + 1); - - return sum == old_sum; + return cmos_checksum_valid(LB_CKS_RANGE_START, LB_CKS_RANGE_END, LB_CKS_LOC); } void sanitize_cmos(void) { - if (cmos_error() || !cmos_chksum_valid() || - CONFIG(STATIC_OPTION_TABLE)) { + if (cmos_error() || !cmos_lb_cks_valid() || CONFIG(STATIC_OPTION_TABLE)) { size_t length = 128; const unsigned char *cmos_default = cbfs_boot_map_with_leak("cmos.default", @@ -83,7 +70,7 @@ int do_normal_boot(void) { unsigned char byte; - if (!CONFIG(USE_OPTION_TABLE) || cmos_error() || !cmos_chksum_valid()) { + if (!CONFIG(USE_OPTION_TABLE) || cmos_error() || !cmos_lb_cks_valid()) { /* Invalid CMOS checksum detected! * Force fallback boot... */ |