1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
ifeq ($(CONFIG_INTEL_CBNT_SUPPORT),y)
ramstage-y += cmos.c
# The private key also contains the public key, so use that if a private key is provided.
ifeq ($(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 $< $@
endif
BG_PROV:=$(obj)/bg-prov
CBNT_CFG:=$(obj)/cbnt.json
$(BG_PROV):
printf " BG_PROV building tool\n"
cd 3rdparty/intel-sec-tools; \
GO111MODULE=on go mod download; \
GO111MODULE=on go mod verify; \
GO111MODULE=on go build -o $(top)/$@ cmd/bg-prov/*.go
$(CBNT_CFG): $(call strip_quotes, $(CONFIG_INTEL_CBNT_BG_PROV_CFG_FILE))
cp $(CONFIG_INTEL_CBNT_BG_PROV_CFG_FILE) $@
ifneq ($(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 $<
endif
ifeq ($(CONFIG_INTEL_CBNT_GENERATE_KM),y)
ifeq ($(CONFIG_INTEL_CBNT_BG_PROV_KM_USE_CFG_FILE),y)
$(obj)/km_unsigned.bin: $(obj)/km_pub.pem $(BG_PROV) $(CBNT_CFG)
printf " BG_PROV creating unsigned KM using config file\n"
$(BG_PROV) km-gen $@ $< --config=$(CBNT_CFG)
else
PK_HASH_ALG_SHA256:=11 # Hardcode as no other options are available for CBnT
$(obj)/km_unsigned.bin: $(obj)/km_pub.pem $(obj)/bpm_pub.pem $(BG_PROV)
printf " BG_PROV creating unsigned KM\n"
$(BG_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 $(BG_PROV) $(call strip_quotes, $(CONFIG_INTEL_CBNT_KM_PRIV_KEY_FILE))
printf " BG_PROV signing KM\n"
$(BG_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
|
