5e0119eaf6
This is useful if you have external infrastructure to sign KM. Change-Id: If5e9306366230b75d97e4e1fb271bcd7615abd5f Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/51572 Reviewed-by: Christian Walter <christian.walter@9elements.com> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
98 lines
3.7 KiB
Makefile
98 lines
3.7 KiB
Makefile
ifeq ($(CONFIG_INTEL_CBNT_SUPPORT),y)
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ramstage-y += cmos.c
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# The private key also contains the public key, so use that if a private key is provided.
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ifeq ($(CONFIG_INTEL_CBNT_NEED_KM_PRIV_KEY),y)
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$(obj)/km_pub.pem: $(call strip_quotes, $(CONFIG_INTEL_CBNT_KM_PRIV_KEY_FILE))
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openssl pkey -in $< -pubout > $@
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else ifeq ($(CONFIG_INTEL_CBNT_NEED_KM_PUB_KEY),y)
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$(obj)/km_pub.pem: $(call strip_quotes, $(CONFIG_INTEL_CBNT_KM_PUB_KEY_FILE))
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cp $< $@
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endif
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# The private key also contains the public key, so use that if a private key is provided.
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ifeq ($(CONFIG_INTEL_CBNT_NEED_BPM_PRIV_KEY),y)
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$(obj)/bpm_pub.pem: $(call strip_quotes, $(CONFIG_INTEL_CBNT_BPM_PRIV_KEY_FILE))
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openssl pkey -in $< -pubout > $@
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else ifeq ($(CONFIG_INTEL_CBNT_NEED_BPM_PUB_KEY),y)
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$(obj)/bpm_pub.pem: $(call strip_quotes, $(CONFIG_INTEL_CBNT_BPM_PUB_KEY_FILE))
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cp $< $@
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endif
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BG_PROV:=$(obj)/bg-prov
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CBNT_CFG:=$(obj)/cbnt.json
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$(BG_PROV):
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printf " BG_PROV building tool\n"
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cd 3rdparty/intel-sec-tools; \
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GO111MODULE=on go mod download; \
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GO111MODULE=on go mod verify; \
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GO111MODULE=on go build -o $(top)/$@ cmd/bg-prov/*.go
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$(CBNT_CFG): $(call strip_quotes, $(CONFIG_INTEL_CBNT_BG_PROV_CFG_FILE))
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cp $(CONFIG_INTEL_CBNT_BG_PROV_CFG_FILE) $@
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ifneq ($(CONFIG_INTEL_CBNT_BOOT_POLICY_MANIFEST_BINARY),"")
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cbfs-files-y += boot_policy_manifest.bin
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boot_policy_manifest.bin-file := $(CONFIG_INTEL_CBNT_BOOT_POLICY_MANIFEST_BINARY)
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boot_policy_manifest.bin-type := raw
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boot_policy_manifest.bin-align := 0x10
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$(call add_intermediate, add_bpm_fit, $(IFITTOOL) set_fit_ptr)
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$(IFITTOOL) -r COREBOOT -a -n boot_policy_manifest.bin -t 12 -s $(CONFIG_CPU_INTEL_NUM_FIT_ENTRIES) -f $<
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endif
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ifeq ($(CONFIG_INTEL_CBNT_GENERATE_KM),y)
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ifeq ($(CONFIG_INTEL_CBNT_BG_PROV_KM_USE_CFG_FILE),y)
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$(obj)/km_unsigned.bin: $(obj)/km_pub.pem $(BG_PROV) $(CBNT_CFG)
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printf " BG_PROV creating unsigned KM using config file\n"
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$(BG_PROV) km-gen $@ $< --config=$(CBNT_CFG)
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else
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PK_HASH_ALG_SHA256:=11 # Hardcode as no other options are available for CBnT
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$(obj)/km_unsigned.bin: $(obj)/km_pub.pem $(obj)/bpm_pub.pem $(BG_PROV)
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printf " BG_PROV creating unsigned KM\n"
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$(BG_PROV) km-gen $@ $< --revision=$(CONFIG_INTEL_CBNT_KM_REVISION) \
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--svn=$(CONFIG_INTEL_CBNT_KM_SVN) \
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--id=$(CONFIG_INTEL_CBNT_KM_ID) \
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--pkhashalg=$(PK_HASH_ALG_SHA256) \
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--bpmpubkey=$(obj)/bpm_pub.pem \
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--bpmhashalgo=$(PK_HASH_ALG_SHA256) \
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--out=$(obj)/km_cfg.json
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endif
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$(obj)/km.bin: $(obj)/km_unsigned.bin $(BG_PROV) $(call strip_quotes, $(CONFIG_INTEL_CBNT_KM_PRIV_KEY_FILE))
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printf " BG_PROV signing KM\n"
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$(BG_PROV) km-sign $< $@ $(CONFIG_INTEL_CBNT_KM_PRIV_KEY_FILE) ""
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KM_FILE=$(obj)/km.bin
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else
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KM_FILE=$(CONFIG_INTEL_CBNT_KEY_MANIFEST_BINARY)
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endif
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ifneq ($(KM_FILE),"")
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ifeq ($(CONFIG_INTEL_CBNT_KM_ONLY_UNSIGNED),y)
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$(call add_intermediate, gen_unsigned_km, $(obj)/km_unsigned.bin)
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@printf "Generating unsgined KM\n"
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build_complete::
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@printf "\n** WARNING **\n"
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@printf "Build generated an unsigned KM image: build/km_unsiged.bin.\n"
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@printf "The resulting image will not work with CBnT.\n"
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@printf "After you have externally signed the image you can add it to the coreboot image:\n"
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@printf "$$ cbfstool build/coreboot.rom add -f km.bin -n key_manifest.bin -t raw -a 16\n"
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@printf "$$ ifittool -r COREBOOT -a -n key_manifest.bin -t 11 -s 12 -f build/coreboot.rom\n"
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else
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cbfs-files-y += key_manifest.bin
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key_manifest.bin-file := $(KM_FILE)
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key_manifest.bin-type := raw
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key_manifest.bin-align := 0x10
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$(call add_intermediate, add_km_fit, $(IFITTOOL) set_fit_ptr)
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$(IFITTOOL) -r COREBOOT -a -n key_manifest.bin -t 11 -s $(CONFIG_CPU_INTEL_NUM_FIT_ENTRIES) -f $<
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endif
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endif # CONFIG_INTEL_CBNT_KM_ONLY_UNSIGNED
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endif # CONFIG_INTEL_CBNT_SUPPORT
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