diff options
Diffstat (limited to 'payloads/libpayload')
| -rw-r--r-- | payloads/libpayload/include/coreboot_tables.h | 15 | ||||
| -rw-r--r-- | payloads/libpayload/include/sysinfo.h | 1 | ||||
| -rw-r--r-- | payloads/libpayload/libc/coreboot.c | 10 |
3 files changed, 26 insertions, 0 deletions
diff --git a/payloads/libpayload/include/coreboot_tables.h b/payloads/libpayload/include/coreboot_tables.h index 92e3f26180..705e348666 100644 --- a/payloads/libpayload/include/coreboot_tables.h +++ b/payloads/libpayload/include/coreboot_tables.h @@ -287,6 +287,21 @@ struct cb_macs { struct mac_address mac_addrs[0]; }; +#define CB_TAG_MMC_INFO 0x0034 +struct cb_mmc_info { + uint32_t tag; + uint32_t size; + /* + * Passes the early mmc status to payload to indicate if firmware + * successfully sent CMD0, CMD1 to the card or not. In case of + * success, the payload can skip the first step of the initialization + * sequence which is to send CMD0, and instead start by sending CMD1 + * as described in Jedec Standard JESD83-B1 section 6.4.3. + * passes 1 on success + */ + int32_t early_cmd1_status; +}; + #define CB_TAG_SERIALNO 0x002a #define CB_MAX_SERIALNO_LENGTH 32 diff --git a/payloads/libpayload/include/sysinfo.h b/payloads/libpayload/include/sysinfo.h index 7e6e74809d..72059adb91 100644 --- a/payloads/libpayload/include/sysinfo.h +++ b/payloads/libpayload/include/sysinfo.h @@ -129,6 +129,7 @@ struct sysinfo_t { uint64_t mtc_start; uint32_t mtc_size; void *chromeos_vpd; + int mmc_early_wake_status; }; extern struct sysinfo_t lib_sysinfo; diff --git a/payloads/libpayload/libc/coreboot.c b/payloads/libpayload/libc/coreboot.c index 3982e47ec2..26a3a48c23 100644 --- a/payloads/libpayload/libc/coreboot.c +++ b/payloads/libpayload/libc/coreboot.c @@ -102,6 +102,13 @@ static void cb_parse_vbnv(unsigned char *ptr, struct sysinfo_t *info) info->vbnv_size = vbnv->range_size; } +static void cb_parse_mmc_info(unsigned char *ptr, struct sysinfo_t *info) +{ + struct cb_mmc_info *mmc_info = (struct cb_mmc_info *)ptr; + + info->mmc_early_wake_status = mmc_info->early_cmd1_status; +} + static void cb_parse_gpios(unsigned char *ptr, struct sysinfo_t *info) { int i; @@ -399,6 +406,9 @@ int cb_parse_header(void *addr, int len, struct sysinfo_t *info) case CB_TAG_SPI_FLASH: cb_parse_spi_flash(ptr, info); break; + case CB_TAG_MMC_INFO: + cb_parse_mmc_info(ptr, info); + break; case CB_TAG_MTC: cb_parse_mtc(ptr, info); break; |