src/lib: Add FW_CONFIG_SOURCE_VPD
Read fw_config value from VPD.
This new option can be used where chrome EC is not supported like
pre-silicon platform and fw_config can be updated by VPD tool in OS.
TEST= boot to OS and read fw_config from vpd
1. Boot to OS
2. Write "fw_config" in VPD
ex) vpd -i "RW_VPD" -s "fw_config"="1"
3. reboot and check fw_config value from coreboot log
Signed-off-by: Wonkyu Kim <wonkyu.kim@intel.com>
Change-Id: I4df7d5612e18957416a40ab854fa63c8b11b4216
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58839
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
diff --git a/src/Kconfig b/src/Kconfig
index e30152d..e1d0c00 100644
--- a/src/Kconfig
+++ b/src/Kconfig
@@ -416,6 +416,16 @@
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