[S] Change in coreboot[main]: payload/external/edk2: Add Kconfig to support use of PCIe OpROMs

[Matt DeVillier (Code Review)]

Attention is currently required from: Benjamin Doron, Martin L Roth, Sean Rhodes.

Matt DeVillier has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/87407?usp=email )

Change subject: payload/external/edk2: Add Kconfig to support use of PCIe OpROMs
......................................................................

payload/external/edk2: Add Kconfig to support use of PCIe OpROMs

Add a Kconfig to support passing `LOAD_OPTION_ROMS=TRUE` as a build
parameter in order to enable edk2 support for dGPUs.

Change-Id: I05444425d1cb98b023681639389949bf3f3b8e9c
Signed-off-by: Matt DeVillier 
---
M payloads/external/Makefile.mk
M payloads/external/edk2/Kconfig
M payloads/external/edk2/Makefile
3 files changed, 13 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/07/87407/1

diff --git a/payloads/external/Makefile.mk b/payloads/external/Makefile.mk
index c279121..5e8c91f 100644
--- a/payloads/external/Makefile.mk
+++ b/payloads/external/Makefile.mk
@@ -182,6 +182,7 @@
    	CONFIG_EDK2_FULL_SCREEN_SETUP=$(CONFIG_EDK2_FULL_SCREEN_SETUP) \
    	CONFIG_EDK2_HAVE_EFI_SHELL=$(CONFIG_EDK2_HAVE_EFI_SHELL) \
    	CONFIG_EDK2_PRIORITIZE_INTERNAL=$(CONFIG_EDK2_PRIORITIZE_INTERNAL) \
+		CONFIG_EDK2_LOAD_OPTION_ROMS=$(CONFIG_EDK2_LOAD_OPTION_ROMS) \
    	CONFIG_EDK2_PS2_SUPPORT=$(CONFIG_EDK2_PS2_SUPPORT) \
    	CONFIG_EDK2_SERIAL_SUPPORT=$(CONFIG_EDK2_SERIAL_SUPPORT) \
    	CONFIG_EDK2_SD_MMC_TIMEOUT=$(CONFIG_EDK2_SD_MMC_TIMEOUT) \
diff --git a/payloads/external/edk2/Kconfig b/payloads/external/edk2/Kconfig
index ea24cee..08e48e5 100644
--- a/payloads/external/edk2/Kconfig
+++ b/payloads/external/edk2/Kconfig
@@ -240,6 +240,14 @@
    help
      Prioritize internal boot devices over external devices

+config EDK2_LOAD_OPTION_ROMS
+	bool "Load and Execute OpROMs on PCIe devices"
+	depends on EDK2_REPO_MRCHROMEBOX
+	default n
+	help
+	  Load and execute OpROMs on PCIe devices.
+	  Select this option to support use of an external dGPU.
+
 config EDK2_PS2_SUPPORT
    bool "Support PS/2 Keyboards"
    default y
diff --git a/payloads/external/edk2/Makefile b/payloads/external/edk2/Makefile
index 6464e9f..0908f4d 100644
--- a/payloads/external/edk2/Makefile
+++ b/payloads/external/edk2/Makefile
@@ -149,6 +149,10 @@
 ifeq ($(CONFIG_EDK2_USE_LAPIC_TIMER),y)
 BUILD_STR += -D TIMER_SUPPORT=LAPIC
 endif
+# LOAD_OPTION_ROMS		= FALSE
+ifeq ($(CONFIG_EDK2_LOAD_OPTION_ROMS),y)
+BUILD_STR += -D LOAD_OPTION_ROMS=TRUE
+endif

endif