diff options
Diffstat (limited to 'src/drivers/pc80/rtc/mc146818rtc.c')
| -rw-r--r-- | src/drivers/pc80/rtc/mc146818rtc.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/drivers/pc80/rtc/mc146818rtc.c b/src/drivers/pc80/rtc/mc146818rtc.c index a102917d8d..33860b8de3 100644 --- a/src/drivers/pc80/rtc/mc146818rtc.c +++ b/src/drivers/pc80/rtc/mc146818rtc.c @@ -304,6 +304,17 @@ static enum cb_err set_cmos_value(unsigned long bit, unsigned long length, return CB_SUCCESS; } +unsigned int read_option_lowlevel(unsigned int start, unsigned int size, + unsigned int def) +{ + printk(BIOS_NOTICE, "NOTICE: read_option() used to access CMOS " + "from non-ROMCC code, please use get_option() instead.\n"); + if (IS_ENABLED(CONFIG_USE_OPTION_TABLE)) { + const unsigned char byte = cmos_read(start / 8); + return (byte >> (start & 7U)) & ((1U << size) - 1U); + } + return def; +} enum cb_err set_option(const char *name, void *value) { |