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ifeq ($(CONFIG_INTEL_CBNT_SUPPORT),y)
all-y += logging.c
ramstage-y += cmos.c
# As specified in Intel Trusted Execution Technology and Boot Guard Server BIOS
# Specification, document number # 558294
PK_HASH_ALG_SHA1:=4
PK_HASH_ALG_SHA256:=11
PK_HASH_ALG_SHA384:=12
# The private key also contains the public key, so use that if a private key is provided.
ifeq ($(CONFIG_INTEL_CBNT_NEED_KM_PRIV_KEY),y)
$(obj)/km_pub.pem: $(call strip_quotes, $(CONFIG_INTEL_CBNT_KM_PRIV_KEY_FILE))
openssl pkey -in $< -pubout > $@
else ifeq ($(CONFIG_INTEL_CBNT_NEED_KM_PUB_KEY),y)
$(obj)/km_pub.pem: $(call strip_quotes, $(CONFIG_INTEL_CBNT_KM_PUB_KEY_FILE))
cp $< $@
endif
# The private key also contains the public key, so use that if a private key is provided.
ifeq ($(CONFIG_INTEL_CBNT_NEED_BPM_PRIV_KEY),y)
$(obj)/bpm_pub.pem: $(call strip_quotes, $(CONFIG_INTEL_CBNT_BPM_PRIV_KEY_FILE))
openssl pkey -in $< -pubout > $@
else ifeq ($(CONFIG_INTEL_CBNT_NEED_BPM_PUB_KEY),y)
$(obj)/bpm_pub.pem: $(call strip_quotes, $(CONFIG_INTEL_CBNT_BPM_PUB_KEY_FILE))
cp $< $@
endif
CBNT_PROV:=$(obj)/cbnt-prov
CBNT_CFG:=$(obj)/cbnt.json
ifneq ($(CONFIG_INTEL_CBNT_PROV_EXTERNAL_BIN),y)
$(CBNT_PROV):
printf " CBNT_PROV building tool\n"
cd 3rdparty/intel-sec-tools; \
GO111MODULE=on go mod download; \
GO111MODULE=on go mod verify; \
GO111MODULE=on go build -o $(abspath $@) cmd/cbnt-prov/*.go
else
$(CBNT_PROV): $(call strip_quotes, $(CONFIG_INTEL_CBNT_PROV_EXTERNAL_BIN_PATH))
cp $< $@
endif
$(CBNT_CFG): $(call strip_quotes, $(CONFIG_INTEL_CBNT_CBNT_PROV_CFG_FILE))
cp $(CONFIG_INTEL_CBNT_CBNT_PROV_CFG_FILE) $@
ifeq ($(CONFIG_INTEL_CBNT_GENERATE_BPM),y)
ifeq ($(CONFIG_INTEL_CBNT_CBNT_PROV_BPM_USE_CFG_FILE),y)
$(obj)/bpm_unsigned.bin: $(obj)/coreboot.rom $(CBNT_PROV) $(CBNT_CFG)
printf " CBNT_PROV creating unsigned BPM using config file\n"
$(CBNT_PROV) bpm-gen $@ $< --config=$(CBNT_CFG) --cut
else
$(obj)/bpm_unsigned.bin: $(obj)/coreboot.rom $(CBNT_PROV)
printf " CBNT_PROV creating unsigned BPM\n"
$(CBNT_PROV) bpm-gen $@ $< --revision=$(CONFIG_INTEL_CBNT_BPM_REVISION) \
--svn=$(CONFIG_INTEL_CBNT_BPM_SVN) \
--acmsvn=$(CONFIG_INTEL_CBNT_ACM_SVN) \
--nems=$(CONFIG_INTEL_CBNT_NUM_NEM_PAGES) \
--pbet=$(CONFIG_INTEL_CBNT_PBET) \
--ibbflags=$(CONFIG_INTEL_CBNT_IBB_FLAGS) \
--entrypoint=$(shell printf "%d" 0xfffffff0) \
--ibbhash=$(PK_HASH_ALG_SHA256),$(PK_HASH_ALG_SHA1),$(PK_HASH_ALG_SHA384) \
--sinitmin=$(CONFIG_INTEL_CBNT_SINIT_SVN) \
--txtflags=0 \
--powerdowninterval=$(CONFIG_INTEL_CBNT_PD_INTERVAL) \
--acpibaseoffset=$(shell printf "%d" $(CONFIG_INTEL_ACPI_BASE_ADDRESS)) \
--powermbaseoffset=$(shell printf "%d" $(CONFIG_INTEL_PCH_PWRM_BASE_ADDRESS)) \
--cmosoff0=$(shell printf "%d" $(CONFIG_INTEL_CBNT_CMOS_OFFSET)) \
--cmosoff1=$(call int-add, $(CONFIG_INTEL_CBNT_CMOS_OFFSET) 1) \
--cut \
--out=$(obj)/bpm_cfg.json
endif
ifeq ($(CONFIG_INTEL_CBNT_BPM_ONLY_UNSIGNED),y)
build_complete:: $(obj)/bpm_unsigned.bin
@printf "\n** WARNING **\n"
@printf "Build generated an unsigned BPM image: build/bpm_unsigned.bin.\n"
@printf "The resulting image will not work with CBnT.\n"
@printf "After you have externally signed the image you can add it to the coreboot image:\n"
@printf "$$ cbfstool build/coreboot.rom add -f bpm.bin -n boot_policy_manifest.bin -t raw -a 16\n"
@printf "$$ ifittool -r COREBOOT -a -n boot_policy_manifest.bin -t 12 -s 12 -f build/coreboot.rom\n"
else
$(obj)/bpm.bin: $(obj)/bpm_unsigned.bin $(CBNT_PROV) $(call strip_quotes, $(CONFIG_INTEL_CBNT_BPM_PRIV_KEY_FILE))
printf " CBNT_PROV signing real BPM\n"
$(CBNT_PROV) bpm-sign $< $@ $(CONFIG_INTEL_CBNT_BPM_PRIV_KEY_FILE) ""
# Add BPM at the end of the build when all files have been added
files_added:: $(obj)/bpm.bin $(IFITTOOL)
printf " CBNT Adding BPM\n"
$(CBFSTOOL) $(obj)/coreboot.rom add -f $< -n boot_policy_manifest.bin -a 0x10 -t raw
printf " IFITTOOL Adding BPM\n"
$(IFITTOOL) -r COREBOOT -a -n boot_policy_manifest.bin -t 12 -s $(CONFIG_CPU_INTEL_NUM_FIT_ENTRIES) -f $(obj)/coreboot.rom
endif # CONFIG_INTEL_CBNT_BPM_ONLY_UNSIGNED
else # CONFIG_INTEL_CBNT_GENERATE_BPM
ifneq ($(CONFIG_INTEL_CBNT_BOOT_POLICY_MANIFEST_BINARY),"")
cbfs-files-y += boot_policy_manifest.bin
boot_policy_manifest.bin-file := $(CONFIG_INTEL_CBNT_BOOT_POLICY_MANIFEST_BINARY)
boot_policy_manifest.bin-type := raw
boot_policy_manifest.bin-align := 0x10
$(call add_intermediate, add_bpm_fit, $(IFITTOOL) set_fit_ptr)
$(IFITTOOL) -r COREBOOT -a -n boot_policy_manifest.bin -t 12 -s $(CONFIG_CPU_INTEL_NUM_FIT_ENTRIES) -f $<
endif
endif # CONFIG_INTEL_CBNT_GENERATE_BPM
ifeq ($(CONFIG_INTEL_CBNT_GENERATE_KM),y)
ifeq ($(CONFIG_INTEL_CBNT_CBNT_PROV_KM_USE_CFG_FILE),y)
$(obj)/km_unsigned.bin: $(obj)/km_pub.pem $(CBNT_PROV) $(CBNT_CFG)
printf " CBNT_PROV creating unsigned KM using config file\n"
$(CBNT_PROV) km-gen $@ $< --config=$(CBNT_CFG)
else
$(obj)/km_unsigned.bin: $(obj)/km_pub.pem $(obj)/bpm_pub.pem $(CBNT_PROV)
printf " CBNT_PROV creating unsigned KM\n"
$(CBNT_PROV) km-gen $@ $< --revision=$(CONFIG_INTEL_CBNT_KM_REVISION) \
--svn=$(CONFIG_INTEL_CBNT_KM_SVN) \
--id=$(CONFIG_INTEL_CBNT_KM_ID) \
--pkhashalg=$(PK_HASH_ALG_SHA256) \
--bpmpubkey=$(obj)/bpm_pub.pem \
--bpmhashalgo=$(PK_HASH_ALG_SHA256) \
--out=$(obj)/km_cfg.json
endif
$(obj)/km.bin: $(obj)/km_unsigned.bin $(CBNT_PROV) $(call strip_quotes, $(CONFIG_INTEL_CBNT_KM_PRIV_KEY_FILE))
printf " CBNT_PROV signing KM\n"
$(CBNT_PROV) km-sign $< $@ $(CONFIG_INTEL_CBNT_KM_PRIV_KEY_FILE) ""
KM_FILE=$(obj)/km.bin
else
KM_FILE=$(CONFIG_INTEL_CBNT_KEY_MANIFEST_BINARY)
endif
ifneq ($(KM_FILE),"")
ifeq ($(CONFIG_INTEL_CBNT_KM_ONLY_UNSIGNED),y)
$(call add_intermediate, gen_unsigned_km, $(obj)/km_unsigned.bin)
@printf "Generating unsgined KM\n"
build_complete::
@printf "\n** WARNING **\n"
@printf "Build generated an unsigned KM image: build/km_unsiged.bin.\n"
@printf "The resulting image will not work with CBnT.\n"
@printf "After you have externally signed the image you can add it to the coreboot image:\n"
@printf "$$ cbfstool build/coreboot.rom add -f km.bin -n key_manifest.bin -t raw -a 16\n"
@printf "$$ ifittool -r COREBOOT -a -n key_manifest.bin -t 11 -s 12 -f build/coreboot.rom\n"
else
cbfs-files-y += key_manifest.bin
key_manifest.bin-file := $(KM_FILE)
key_manifest.bin-type := raw
key_manifest.bin-align := 0x10
$(call add_intermediate, add_km_fit, $(IFITTOOL) set_fit_ptr)
$(IFITTOOL) -r COREBOOT -a -n key_manifest.bin -t 11 -s $(CONFIG_CPU_INTEL_NUM_FIT_ENTRIES) -f $<
endif
endif # CONFIG_INTEL_CBNT_KM_ONLY_UNSIGNED
endif # CONFIG_INTEL_CBNT_SUPPORT
|
