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From: Philipp Giersfeld <philipp.giersfeld@canarybit.eu>
To: pve-devel@lists.proxmox.com
Date: Mon, 24 Feb 2025 13:37:11 +0100
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Subject: [pve-devel] [PATCH edk2-firmware v3 2/5] Add OVMF targets for AMD
 SEV-ES and SEV-SNP
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AMD SEV-SNP boots with a single volatile firmware image OVMF.fd via the
-bios option.

Currently, an SEV-enabled VM will not boot with an OVMF
firmware that was compiled with `SECURE_BOOT_ENABLE` [1].

Furthermore, during testing, SEV-enabled amchines did not boot with
`SMM_REQUIRE`.

Therefore, introduce a new target build-ovmf-cvm that builds OVMF
firmware suitable for AMD SEV.

[1] https://github.com/tianocore/edk2/pull/6285

Signed-off-by: Philipp Giersfeld <philipp.giersfeld@canarybit.eu>
Tested-by: Markus Frank <m.frank@proxmox.com>
---

 no changes since last version

 debian/pve-edk2-firmware-ovmf.install |  3 +++
 debian/rules                          | 35 +++++++++++++++++++++++----
 2 files changed, 33 insertions(+), 5 deletions(-)

diff --git a/debian/pve-edk2-firmware-ovmf.install b/debian/pve-edk2-firmware-ovmf.install
index f4c0602..a51846e 100644
--- a/debian/pve-edk2-firmware-ovmf.install
+++ b/debian/pve-edk2-firmware-ovmf.install
@@ -1,5 +1,8 @@
 debian/ovmf-install/OVMF_CODE*.fd	/usr/share/pve-edk2-firmware
 debian/ovmf-install/OVMF_VARS*.fd	/usr/share/pve-edk2-firmware
+debian/ovmf-cvm-install/OVMF_CVM_CODE*.fd	/usr/share/pve-edk2-firmware
+debian/ovmf-cvm-install/OVMF_CVM_VARS*.fd	/usr/share/pve-edk2-firmware
+debian/ovmf-cvm-install/OVMF_CVM_4M.fd	/usr/share/pve-edk2-firmware
 debian/ovmf32-install/OVMF32_CODE*.fd		/usr/share/pve-edk2-firmware
 debian/ovmf32-install/OVMF32_VARS*.fd		/usr/share/pve-edk2-firmware
 debian/PkKek-1-snakeoil.*			/usr/share/pve-edk2-firmware
diff --git a/debian/rules b/debian/rules
index 2e9365b..3959500 100755
--- a/debian/rules
+++ b/debian/rules
@@ -28,22 +28,24 @@ PCD_FLAGS += --pcd PcdFirmwareReleaseDateString=L"$(PCD_RELEASE_DATE)\\0"
 COMMON_FLAGS  = -DNETWORK_HTTP_BOOT_ENABLE=TRUE
 COMMON_FLAGS += -DNETWORK_IP6_ENABLE=TRUE
 COMMON_FLAGS += -DNETWORK_TLS_ENABLE
-COMMON_FLAGS += -DSECURE_BOOT_ENABLE=TRUE
 COMMON_FLAGS += -DPVSCSI_ENABLE=TRUE
 COMMON_FLAGS += $(PCD_FLAGS)
 OVMF_COMMON_FLAGS  = $(COMMON_FLAGS)
 OVMF_COMMON_FLAGS += -DTPM2_ENABLE=TRUE
-OVMF_4M_FLAGS = $(OVMF_COMMON_FLAGS) -DFD_SIZE_4MB
+OVMF_4M_FLAGS = $(OVMF_COMMON_FLAGS) -DFD_SIZE_4MB -DSECURE_BOOT_ENABLE=TRUE
 OVMF_4M_SMM_FLAGS = $(OVMF_4M_FLAGS) -DSMM_REQUIRE=TRUE
-OVMF32_4M_FLAGS = $(OVMF_COMMON_FLAGS) -DFD_SIZE_4MB
+OVMF32_4M_FLAGS = $(OVMF_COMMON_FLAGS) -DFD_SIZE_4MB -DSECURE_BOOT_ENABLE=TRUE
 OVMF32_4M_SMM_FLAGS =  $(OVMF32_4M_FLAGS) -DSMM_REQUIRE=TRUE
+OVMF_CVM_4M_FLAGS = $(OVMF_COMMON_FLAGS) -DFD_SIZE_4MB
 
 AAVMF_FLAGS  = $(COMMON_FLAGS)
+AAVMF_FLAGS += -DSECURE_BOOT_ENABLE=TRUE
 AAVMF_FLAGS += -DTPM2_ENABLE=TRUE
 AAVMF_FLAGS += -DTPM2_CONFIG_ENABLE=TRUE
 AAVMF_FLAGS += -DCAVIUM_ERRATUM_27456=TRUE
 
 RISCV64_FLAGS = $(COMMON_FLAGS)
+RISCV64_FLAGS += -DSECURE_BOOT_ENABLE=TRUE
 
 # Clear variables used internally by the edk2 build system
 undefine WORKSPACE
@@ -56,7 +58,7 @@ undefine CONF_PATH
 %:
 	dh $@
 
-override_dh_auto_build: build-qemu-efi-aarch64 build-ovmf build-ovmf32 build-qemu-efi-riscv64
+override_dh_auto_build: build-qemu-efi-aarch64 build-ovmf build-ovmf32 build-ovmf-cvm build-qemu-efi-riscv64
 
 debian/setup-build-stamp:
 	cp -a debian/Logo.bmp MdeModulePkg/Logo/Logo.bmp
@@ -79,6 +81,12 @@ OVMF32_SHELL = $(OVMF32_BUILD_DIR)/IA32/Shell.efi
 OVMF32_BINARIES = $(OVMF32_SHELL)
 OVMF32_IMAGES  := $(addprefix $(OVMF32_INSTALL_DIR)/,OVMF32_CODE_4M.secboot.fd OVMF32_VARS_4M.fd)
 
+OVMF_CVM_INSTALL_DIR = debian/ovmf-cvm-install
+OVMF_CVM_BUILD_DIR = Build/OvmfX64/$(BUILD_TYPE)_$(EDK2_TOOLCHAIN)
+OVMF_CVM_SHELL = $(OVMF_CVM_BUILD_DIR)/X64/Shell.efi
+OVMF_CVM_BINARIES = $(OVMF_CVM_SHELL)
+OVMF_CVM_IMAGES  := $(addprefix $(OVMF_CVM_INSTALL_DIR)/,OVMF_CVM_CODE_4M.fd OVMF_CVM_VARS_4M.fd)
+
 QEMU_EFI_BUILD_DIR = Build/ArmVirtQemu-$(EDK2_HOST_ARCH)/$(BUILD_TYPE)_$(EDK2_TOOLCHAIN)
 AAVMF_BUILD_DIR = Build/ArmVirtQemu-AARCH64/$(BUILD_TYPE)_$(EDK2_TOOLCHAIN)
 AAVMF_ENROLL    = $(AAVMF_BUILD_DIR)/AARCH64/EnrollDefaultKeys.efi
@@ -106,6 +114,23 @@ $(OVMF32_BINARIES) $(OVMF32_IMAGES): debian/setup-build-stamp
 	cp $(OVMF32_BUILD_DIR)/FV/OVMF_VARS.fd \
 		$(OVMF32_INSTALL_DIR)/OVMF32_VARS_4M.fd
 
+build-ovmf-cvm: $(OVMF_CVM_BINARIES) $(OVMF_CVM_IMAGES)
+$(OVMF_CVM_BINARIES) $(OVMF_CVM_IMAGES): debian/setup-build-stamp
+	rm -rf $(OVMF_CVM_INSTALL_DIR)
+	mkdir $(OVMF_CVM_INSTALL_DIR)
+	set -e; . ./edksetup.sh; \
+		build -a X64 \
+			-t $(EDK2_TOOLCHAIN) \
+			-p OvmfPkg/OvmfPkgX64.dsc \
+			$(OVMF_CVM_4M_FLAGS) -b $(BUILD_TYPE)
+			#-b $(BUILD_TYPE)
+	cp $(OVMF_CVM_BUILD_DIR)/FV/OVMF_CODE.fd \
+		$(OVMF_CVM_INSTALL_DIR)/OVMF_CVM_CODE_4M.fd
+	cp $(OVMF_CVM_BUILD_DIR)/FV/OVMF_VARS.fd \
+		$(OVMF_CVM_INSTALL_DIR)/OVMF_CVM_VARS_4M.fd
+	cp $(OVMF_CVM_BUILD_DIR)/FV/OVMF.fd \
+		$(OVMF_CVM_INSTALL_DIR)/OVMF_CVM_4M.fd
+
 build-ovmf: $(OVMF_BINARIES) $(OVMF_IMAGES) $(OVMF_PREENROLLED_VARS)
 $(OVMF_BINARIES) $(OVMF_IMAGES): debian/setup-build-stamp
 	rm -rf $(OVMF_INSTALL_DIR)
@@ -250,4 +275,4 @@ get-orig-source:
 		edk2-$(DEB_VERSION_UPSTREAM)
 	rm -rf edk2.tmp edk2-$(DEB_VERSION_UPSTREAM)
 
-.PHONY: build-ovmf build-ovmf32 build-qemu-efi build-qemu-efi-aarch64 build-qemu-efi-riscv64
+.PHONY: build-ovmf build-ovmf32 build-ovmf-cvm build-qemu-efi build-qemu-efi-aarch64 build-qemu-efi-riscv64
\ No newline at end of file
-- 
2.39.5


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