diff options
Diffstat (limited to 'src/drivers')
| -rw-r--r-- | src/drivers/pc80/Makefile.inc | 4 | ||||
| -rw-r--r-- | src/drivers/pc80/mc146818rtc.c | 99 |
2 files changed, 54 insertions, 49 deletions
diff --git a/src/drivers/pc80/Makefile.inc b/src/drivers/pc80/Makefile.inc index 1d28152a70..97159497fd 100644 --- a/src/drivers/pc80/Makefile.inc +++ b/src/drivers/pc80/Makefile.inc @@ -7,9 +7,7 @@ ramstage-$(CONFIG_UDELAY_IO) += udelay_io.c ramstage-y += keyboard.c ramstage-$(CONFIG_SPKMODEM) += spkmodem.c -ifeq ($(CONFIG_DRIVERS_MC146818),y) -romstage-$(CONFIG_USE_OPTION_TABLE) += mc146818rtc_early.c -endif +romstage-$(CONFIG_DRIVERS_MC146818) += mc146818rtc_early.c romstage-$(CONFIG_LPC_TPM) += tpm.c romstage-$(CONFIG_SPKMODEM) += spkmodem.c diff --git a/src/drivers/pc80/mc146818rtc.c b/src/drivers/pc80/mc146818rtc.c index fc3adf0cb8..b18f22f43d 100644 --- a/src/drivers/pc80/mc146818rtc.c +++ b/src/drivers/pc80/mc146818rtc.c @@ -26,9 +26,15 @@ #include <boot/coreboot_tables.h> #include <rtc.h> #include <string.h> +#include <cbfs.h> + +/* There's no way around this include guard. option_table.h is autogenerated */ #if CONFIG_USE_OPTION_TABLE #include "option_table.h" -#include <cbfs.h> +#else +#define LB_CKS_RANGE_START 0 +#define LB_CKS_RANGE_END 0 +#define LB_CKS_LOC 0 #endif @@ -48,7 +54,6 @@ static void cmos_reset_date(void) rtc_set(&time); } -#if CONFIG_USE_OPTION_TABLE static int cmos_checksum_valid(int range_start, int range_end, int cks_loc) { int i; @@ -71,19 +76,18 @@ static void cmos_set_checksum(int range_start, int range_end, int cks_loc) cmos_write(((sum >> 8) & 0x0ff), cks_loc); cmos_write(((sum >> 0) & 0x0ff), cks_loc + 1); } -#endif #define RTC_CONTROL_DEFAULT (RTC_24H) #define RTC_FREQ_SELECT_DEFAULT (RTC_REF_CLCK_32KHZ | RTC_RATE_1024HZ) #ifndef __SMM__ -void cmos_init(int invalid) +void cmos_init(bool invalid) { - int cmos_invalid = 0; - int checksum_invalid = 0; -#if CONFIG_USE_OPTION_TABLE - unsigned char x; -#endif + bool cmos_invalid = false; + bool checksum_invalid = false; + bool clear_cmos; + size_t i; + uint8_t x; #ifndef __PRE_RAM__ /* @@ -98,38 +102,37 @@ void cmos_init(int invalid) printk(BIOS_DEBUG, "RTC Init\n"); -#if CONFIG_USE_OPTION_TABLE - /* See if there has been a CMOS power problem. */ - x = cmos_read(RTC_VALID); - cmos_invalid = !(x & RTC_VRT); + if (IS_ENABLED(CONFIG_USE_OPTION_TABLE)) { + /* See if there has been a CMOS power problem. */ + x = cmos_read(RTC_VALID); + cmos_invalid = !(x & RTC_VRT); - /* See if there is a CMOS checksum error */ - checksum_invalid = !cmos_checksum_valid(PC_CKS_RANGE_START, - PC_CKS_RANGE_END,PC_CKS_LOC); + /* See if there is a CMOS checksum error */ + checksum_invalid = !cmos_checksum_valid(PC_CKS_RANGE_START, + PC_CKS_RANGE_END, PC_CKS_LOC); -#define CLEAR_CMOS 0 -#else -#define CLEAR_CMOS 1 -#endif + clear_cmos = false; + } else { + clear_cmos = true; + } if (invalid || cmos_invalid || checksum_invalid) { -#if CLEAR_CMOS - int i; - - cmos_write(0, 0x01); - cmos_write(0, 0x03); - cmos_write(0, 0x05); - for (i = 10; i < 128; i++) - cmos_write(0, i); -#endif + if (clear_cmos) { + cmos_write(0, 0x01); + cmos_write(0, 0x03); + cmos_write(0, 0x05); + for (i = 10; i < 128; i++) + cmos_write(0, i); + } + if (cmos_invalid) cmos_reset_date(); printk(BIOS_WARNING, "RTC:%s%s%s%s\n", - invalid?" Clear requested":"", - cmos_invalid?" Power Problem":"", - checksum_invalid?" Checksum invalid":"", - CLEAR_CMOS?" zeroing cmos":""); + invalid ? " Clear requested":"", + cmos_invalid ? " Power Problem":"", + checksum_invalid ? " Checksum invalid":"", + clear_cmos ? " zeroing cmos":""); } /* Setup the real time clock */ @@ -139,24 +142,23 @@ void cmos_init(int invalid) /* Ensure all reserved bits are 0 in register D */ cmos_write(RTC_VRT, RTC_VALID); -#if CONFIG_USE_OPTION_TABLE - /* See if there is a LB CMOS checksum error */ - checksum_invalid = !cmos_checksum_valid(LB_CKS_RANGE_START, - LB_CKS_RANGE_END,LB_CKS_LOC); - if (checksum_invalid) - printk(BIOS_DEBUG, "RTC: coreboot checksum invalid\n"); - - /* Make certain we have a valid checksum */ - cmos_set_checksum(PC_CKS_RANGE_START, PC_CKS_RANGE_END, PC_CKS_LOC); -#endif + if (IS_ENABLED(CONFIG_USE_OPTION_TABLE)) { + /* See if there is a LB CMOS checksum error */ + checksum_invalid = !cmos_checksum_valid(LB_CKS_RANGE_START, + LB_CKS_RANGE_END,LB_CKS_LOC); + if (checksum_invalid) + printk(BIOS_DEBUG, "RTC: coreboot checksum invalid\n"); + + /* Make certain we have a valid checksum */ + cmos_set_checksum(PC_CKS_RANGE_START, PC_CKS_RANGE_END, PC_CKS_LOC); + } /* Clear any pending interrupts */ cmos_read(RTC_INTR_FLAGS); } -#endif +#endif /* __SMM__ */ -#if CONFIG_USE_OPTION_TABLE /* * This routine returns the value of the requested bits. * input bit = bit count from the beginning of the cmos image @@ -200,6 +202,9 @@ enum cb_err get_option(void *dest, const char *name) size_t namelen; int found = 0; + if (!IS_ENABLED(CONFIG_USE_OPTION_TABLE)) + return CB_CMOS_OTABLE_DISABLED; + /* Figure out how long name is */ namelen = strnlen(name, CMOS_MAX_NAME_LENGTH); @@ -280,6 +285,9 @@ enum cb_err set_option(const char *name, void *value) size_t namelen; int found = 0; + if (!IS_ENABLED(CONFIG_USE_OPTION_TABLE)) + return CB_CMOS_OTABLE_DISABLED; + /* Figure out how long name is */ namelen = strnlen(name, CMOS_MAX_NAME_LENGTH); @@ -318,7 +326,6 @@ enum cb_err set_option(const char *name, void *value) return CB_SUCCESS; } -#endif /* CONFIG_USE_OPTION_TABLE */ /* * If the CMOS is cleared, the rtc_reg has the invalid date. That |