payloads/external/tianocore: Add build argument for 4G Decode
Add Kconfig option TIANOCORE_ABOVE_4G_DECODE to pass build option to
edk2 to enable or disable "Above 4G Decode". Disabling allows certain Linux
distributions to boot such as Qubes, Zorin and Proxmox.
Requires commit `2f6d4cbcc7fa49462e607baed7626524ccd59ad3` that is
present in the `uefipayload_202107` branch of MrChromebox's edk2
repository.
Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Change-Id: Ia3b1d15196c0ec611431af29031682fea626d19d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56223
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
diff --git a/payloads/external/tianocore/Kconfig b/payloads/external/tianocore/Kconfig
index cb3ff5d..5349f25 100644
--- a/payloads/external/tianocore/Kconfig
+++ b/payloads/external/tianocore/Kconfig
@@ -82,6 +82,17 @@
If an absolute path is not given, the path will assumed to be
relative to the coreboot root directory.
+config TIANOCORE_ABOVE_4G_MEMORY
+ bool "Enable above 4G memory"
+ default n
+ help
+ Select this option to enable Above 4G Decode. This will allow the
+ payload to use all of the memory, rather than an maximum of 4G.
+
+ Disabling this option, which will reserve memory above 4G, is
+ useful for bootloaders that are not fully 64-bit aware such as
+ Qubes R4.0.4 bootloader.
+
endif
config TIANOCORE_BOOT_TIMEOUT
diff --git a/payloads/external/tianocore/Makefile b/payloads/external/tianocore/Makefile
index ef3aacf..4fda8b8 100644
--- a/payloads/external/tianocore/Makefile
+++ b/payloads/external/tianocore/Makefile
@@ -33,9 +33,15 @@
CBMEM=-D USE_CBMEM_FOR_CONSOLE=TRUE
endif
+ifeq ($(CONFIG_TIANOCORE_ABOVE_4G_MEMORY),y)
+4G=-D ABOVE_4G_MEMORY=TRUE
+else
+4G=-D ABOVE_4G_MEMORY=FALSE
+endif
+
TIMEOUT=-D PLATFORM_BOOT_TIMEOUT=$(CONFIG_TIANOCORE_BOOT_TIMEOUT)
-BUILD_STR=-q -a IA32 -a X64 -p UefiPayloadPkg/UefiPayloadPkg.dsc -t COREBOOT -b $(BUILD_TYPE) $(TIMEOUT) $(build_flavor) $(CBMEM)
+BUILD_STR=-q -a IA32 -a X64 -p UefiPayloadPkg/UefiPayloadPkg.dsc -t COREBOOT -b $(BUILD_TYPE) $(TIMEOUT) $(build_flavor) $(CBMEM) $(4G)
all: clean build