diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/Kconfig | 10 | ||||
| -rw-r--r-- | src/lib/fw_config.c | 12 |
2 files changed, 22 insertions, 0 deletions
diff --git a/src/Kconfig b/src/Kconfig index e30152d2e5..e1d0c00c45 100644 --- a/src/Kconfig +++ b/src/Kconfig @@ -416,6 +416,16 @@ config FW_CONFIG_SOURCE_CBFS local image to preempt the mainboard selected source and can be used as FW_CONFIG_SOURCE_CHROMEEC_CBI fallback option. +config FW_CONFIG_SOURCE_VPD + bool "Obtain Firmware Configuration value from VPD" + depends on FW_CONFIG && VPD + default n + help + With this option enabled coreboot will look for the 32bit firmware + configuration value in VPD key name "fw_config". This option will + override other sources and allow the local image to preempt the mainboard + selected source and can be used for other FW_CONFIG_SOURCEs fallback option. + config HAVE_RAMPAYLOAD bool diff --git a/src/lib/fw_config.c b/src/lib/fw_config.c index 3546736b7b..72cf225cae 100644 --- a/src/lib/fw_config.c +++ b/src/lib/fw_config.c @@ -11,6 +11,7 @@ #include <lib.h> #include <stdbool.h> #include <stdint.h> +#include <drivers/vpd/vpd.h> uint64_t fw_config_get(void) { @@ -44,6 +45,17 @@ uint64_t fw_config_get(void) fw_config_value); } + if (CONFIG(FW_CONFIG_SOURCE_VPD) && fw_config_value == UNDEFINED_FW_CONFIG) { + int vpd_value; + if (vpd_get_int("fw_config", VPD_RW_THEN_RO, &vpd_value)) { + fw_config_value = vpd_value; + printk(BIOS_INFO, "FW_CONFIG value from VPD is 0x%" PRIx64 "\n", + fw_config_value); + } else + printk(BIOS_WARNING, "%s: Could not get fw_config from vpd\n", + __func__); + } + return fw_config_value; } |