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
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
|
##
## This file is part of the coreboot project.
##
## Copyright (C) 2014 The ChromiumOS Authors. All rights reserved.
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; version 2 of the License.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
##
ifeq ($(CONFIG_VBOOT),y)
bootblock-y += bootmode.c
romstage-y += bootmode.c
ramstage-y += bootmode.c
verstage-y += bootmode.c
postcar-y += bootmode.c
verstage-generic-ccopts += -D__PRE_RAM__ -D__VERSTAGE__
bootblock-y += vbnv.c
verstage-y += vbnv.c
romstage-y += vbnv.c
ramstage-y += vbnv.c
bootblock-$(CONFIG_VBOOT_VBNV_CMOS) += vbnv_cmos.c
verstage-$(CONFIG_VBOOT_VBNV_CMOS) += vbnv_cmos.c
romstage-$(CONFIG_VBOOT_VBNV_CMOS) += vbnv_cmos.c
ramstage-$(CONFIG_VBOOT_VBNV_CMOS) += vbnv_cmos.c
bootblock-$(CONFIG_VBOOT_VBNV_CMOS_BACKUP_TO_FLASH) += vbnv_flash.c
verstage-$(CONFIG_VBOOT_VBNV_CMOS_BACKUP_TO_FLASH) += vbnv_flash.c
romstage-$(CONFIG_VBOOT_VBNV_CMOS_BACKUP_TO_FLASH) += vbnv_flash.c
ramstage-$(CONFIG_VBOOT_VBNV_CMOS_BACKUP_TO_FLASH) += vbnv_flash.c
bootblock-$(CONFIG_VBOOT_VBNV_EC) += vbnv_ec.c
verstage-$(CONFIG_VBOOT_VBNV_EC) += vbnv_ec.c
romstage-$(CONFIG_VBOOT_VBNV_EC) += vbnv_ec.c
ramstage-$(CONFIG_VBOOT_VBNV_EC) += vbnv_ec.c
bootblock-$(CONFIG_VBOOT_VBNV_FLASH) += vbnv_flash.c
verstage-$(CONFIG_VBOOT_VBNV_FLASH) += vbnv_flash.c
romstage-$(CONFIG_VBOOT_VBNV_FLASH) += vbnv_flash.c
ramstage-$(CONFIG_VBOOT_VBNV_FLASH) += vbnv_flash.c
bootblock-y += vboot_loader.c
romstage-y += vboot_loader.c
ramstage-y += vboot_loader.c
verstage-y += vboot_loader.c
postcar-y += vboot_loader.c
bootblock-y += vboot_common.c
verstage-y += vboot_common.c
romstage-y += vboot_common.c
ramstage-y += vboot_common.c
postcar-y += vboot_common.c
bootblock-y += common.c
verstage-y += vboot_logic.c
verstage-y += common.c
verstage-$(CONFIG_VBOOT_SEPARATE_VERSTAGE) += verstage.c
ifeq (${CONFIG_VBOOT_MOCK_SECDATA},y)
verstage-y += secdata_mock.c
romstage-$(CONFIG_VBOOT_SEPARATE_VERSTAGE) += secdata_mock.c
else
verstage-y += secdata_tpm.c
romstage-$(CONFIG_VBOOT_SEPARATE_VERSTAGE) += secdata_tpm.c
endif
romstage-y += vboot_handoff.c common.c
ramstage-y += common.c
postcar-y += common.c
ifeq ($(CONFIG_VBOOT_SEPARATE_VERSTAGE),y)
VB_FIRMWARE_ARCH := $(ARCHDIR-$(ARCH-verstage-y))
else
ifeq ($(CONFIG_VBOOT_STARTS_IN_BOOTBLOCK),y)
VB_FIRMWARE_ARCH := $(ARCHDIR-$(ARCH-bootblock-y))
else
VB_FIRMWARE_ARCH := $(ARCHDIR-$(ARCH-romstage-y))
endif
endif # CONFIG_VBOOT_SEPARATE_VERSTAGE
VB2_LIB = $(obj)/external/vboot_reference/vboot_fw20.a
VBOOT_CFLAGS += $(patsubst -I%,-I$(top)/%, $(filter-out -I$(obj), $(filter-out -include $(src)/include/kconfig.h, $(CPPFLAGS_verstage))))
VBOOT_CFLAGS += $(CFLAGS_verstage)
VBOOT_CFLAGS += $(verstage-c-ccopts)
VBOOT_CFLAGS += -I$(abspath $(obj)) -include $(top)/src/include/kconfig.h -Wno-missing-prototypes
VBOOT_CFLAGS += -DVBOOT_DEBUG
$(VB2_LIB): $(obj)/config.h
printf " MAKE $(subst $(obj)/,,$(@))\n"
+FIRMWARE_ARCH=$(VB_FIRMWARE_ARCH) \
CC="$(CC_verstage)" \
CFLAGS="$(VBOOT_CFLAGS)" VBOOT2="y" \
$(MAKE) -C $(VBOOT_SOURCE) \
BUILD=$(abspath $(dir $(VB2_LIB))) \
V=$(V) \
fwlib20
verstage-srcs += $(VB2_LIB)
ifeq ($(CONFIG_VBOOT_SEPARATE_VERSTAGE),y)
# This works under the assumption that romstage and verstage use the same
# architecture and thus CC_verstage is the same as CC_romstage. If this is not
# true, VB2_LIB needs to ensure that correct CC is being used.
ifeq ($(CONFIG_VBOOT_HAS_REC_HASH_SPACE),y)
romstage-srcs += $(VB2_LIB)
endif
cbfs-files-$(CONFIG_VBOOT_SEPARATE_VERSTAGE) += $(CONFIG_CBFS_PREFIX)/verstage
$(CONFIG_CBFS_PREFIX)/verstage-file := $(objcbfs)/verstage.elf
$(CONFIG_CBFS_PREFIX)/verstage-type := stage
$(CONFIG_CBFS_PREFIX)/verstage-compression := $(CBFS_PRERAM_COMPRESS_FLAG)
ifeq ($(CONFIG_ARCH_VERSTAGE_X86_32)$(CONFIG_ARCH_VERSTAGE_X86_64),y)
$(CONFIG_CBFS_PREFIX)/verstage-options := -a 64 -S ".car.data"
# If CAR does not support execution of code, verstage on x86 is expected to be
# xip.
ifneq ($(CONFIG_NO_XIP_EARLY_STAGES),y)
$(CONFIG_CBFS_PREFIX)/verstage-options += --xip
endif
endif
else # CONFIG_VBOOT_SEPARATE_VERSTAGE
ifeq ($(CONFIG_VBOOT_STARTS_IN_BOOTBLOCK),y)
postinclude-hooks += $$(eval bootblock-srcs += $$(verstage-srcs))
else
postinclude-hooks += $$(eval romstage-srcs += $$(verstage-srcs))
endif
endif # CONFIG_VBOOT_SEPARATE_VERSTAGE
# Define a list of files that need to be in RO only.
# All other files will be installed into RO and RW regions
# Use $(sort) to cut down on extra spaces that would be translated to commas
regions-for-file = $(subst $(spc),$(comma),$(sort \
$(if $(filter \
$(if $(filter y,$(CONFIG_VBOOT_STARTS_IN_BOOTBLOCK)),, \
%/romstage) \
mts \
%/verstage \
locales \
locale_%.bin \
font.bin \
vbgfx.bin \
rmu.bin \
$(call strip_quotes,$(CONFIG_RO_REGION_ONLY)) \
,$(1)),COREBOOT,COREBOOT FW_MAIN_A FW_MAIN_B)))
CONFIG_GBB_HWID := $(call strip_quotes,$(CONFIG_GBB_HWID))
CONFIG_GBB_BMPFV_FILE := $(call strip_quotes,$(CONFIG_GBB_BMPFV_FILE))
CONFIG_VBOOT_KEYBLOCK := $(call strip_quotes,$(CONFIG_VBOOT_KEYBLOCK))
CONFIG_VBOOT_FIRMWARE_PRIVKEY := $(call strip_quotes,$(CONFIG_VBOOT_FIRMWARE_PRIVKEY))
CONFIG_VBOOT_KERNEL_KEY := $(call strip_quotes,$(CONFIG_VBOOT_KERNEL_KEY))
CONFIG_VBOOT_FWID_MODEL := $(call strip_quotes,$(CONFIG_VBOOT_FWID_MODEL))
CONFIG_VBOOT_FWID_VERSION := $(call strip_quotes,$(CONFIG_VBOOT_FWID_VERSION))
# bool-to-mask(var, value)
# return "value" if var is "y", 0 otherwise
bool-to-mask = $(if $(filter y,$(1)),$(2),0)
GBB_FLAGS := $(call int-add, \
$(call bool-to-mask,$(CONFIG_GBB_FLAG_DEV_SCREEN_SHORT_DELAY),0x1) \
$(call bool-to-mask,$(CONFIG_GBB_FLAG_LOAD_OPTION_ROMS),0x2) \
$(call bool-to-mask,$(CONFIG_GBB_FLAG_ENABLE_ALTERNATE_OS),0x4) \
$(call bool-to-mask,$(CONFIG_GBB_FLAG_FORCE_DEV_SWITCH_ON),0x8) \
$(call bool-to-mask,$(CONFIG_GBB_FLAG_FORCE_DEV_BOOT_USB),0x10) \
$(call bool-to-mask,$(CONFIG_GBB_FLAG_DISABLE_FW_ROLLBACK_CHECK),0x20) \
$(call bool-to-mask,$(CONFIG_GBB_FLAG_ENTER_TRIGGERS_TONORM),0x40) \
$(call bool-to-mask,$(CONFIG_GBB_FLAG_FORCE_DEV_BOOT_LEGACY),0x80) \
$(call bool-to-mask,$(CONFIG_GBB_FLAG_FAFT_KEY_OVERIDE),0x100) \
$(call bool-to-mask,$(CONFIG_GBB_FLAG_DISABLE_EC_SOFTWARE_SYNC),0x200) \
$(call bool-to-mask,$(CONFIG_GBB_FLAG_DEFAULT_DEV_BOOT_LEGACY),0x400) \
$(call bool-to-mask,$(CONFIG_GBB_FLAG_DISABLE_PD_SOFTWARE_SYNC),0x800) \
$(call bool-to-mask,$(CONFIG_GBB_FLAG_DISABLE_LID_SHUTDOWN),0x1000) \
$(call bool-to-mask,$(CONFIG_GBB_FLAG_FORCE_DEV_BOOT_FASTBOOT_FULL_CAP),0x2000) \
$(call bool-to-mask,$(CONFIG_GBB_FLAG_ENABLE_SERIAL),0x4000) \
)
ifneq ($(CONFIG_GBB_BMPFV_FILE),)
$(obj)/gbb.sizetmp: $(obj)/coreboot.rom
$(CBFSTOOL) $< read -r GBB -f $@
$(obj)/gbb.stub: $(obj)/coreboot.rom $(FUTILITY) $(obj)/gbb.sizetmp
@printf " CREATE GBB (with BMPFV)\n"
$(FUTILITY) gbb_utility -c 0x100,0x1000,$(call int-subtract,$(call file-size,$(obj)/gbb.sizetmp) 0x2180),0x1000 $@.tmp
mv $@.tmp $@
else
$(obj)/gbb.stub: $(obj)/coreboot.rom $(FUTILITY)
@printf " CREATE GBB (without BMPFV)\n"
$(FUTILITY) gbb_utility -c 0x100,0x1000,0,0x1000 $@.tmp
mv $@.tmp $@
endif
$(obj)/gbb.region: $(obj)/gbb.stub
@printf " SETUP GBB\n"
cp $< $@.tmp
$(FUTILITY) gbb_utility -s \
--hwid="$(CONFIG_GBB_HWID)" \
--rootkey="$(CONFIG_VBOOT_ROOT_KEY)" \
--recoverykey="$(CONFIG_VBOOT_RECOVERY_KEY)" \
--flags=$(GBB_FLAGS) \
$@.tmp
ifneq ($(CONFIG_GBB_BMPFV_FILE),)
$(FUTILITY) gbb_utility -s \
--bmpfv="$(CONFIG_GBB_BMPFV_FILE)" \
$@.tmp
endif
mv $@.tmp $@
$(obj)/fwid.region:
printf "$(CONFIG_VBOOT_FWID_MODEL)$(CONFIG_VBOOT_FWID_VERSION)\0" > $@
build_complete:: $(obj)/gbb.region $(obj)/fwid.region
@printf " WRITE GBB\n"
$(CBFSTOOL) $(obj)/coreboot.rom write -u -r GBB -i 0 -f $(obj)/gbb.region
$(CBFSTOOL) $(obj)/coreboot.rom write -u -r RO_FRID -i 0 -f $(obj)/fwid.region
$(CBFSTOOL) $(obj)/coreboot.rom write -u -r RW_FWID_A -i 0 -f $(obj)/fwid.region
$(CBFSTOOL) $(obj)/coreboot.rom write -u -r RW_FWID_B -i 0 -f $(obj)/fwid.region
ifneq ($(shell grep "SHARED_DATA" "$(CONFIG_FMDFILE)"),)
build_complete::
printf "\0" > $(obj)/shared_data.region
$(CBFSTOOL) $(obj)/coreboot.rom write -u -r SHARED_DATA -i 0 -f $(obj)/shared_data.region
endif
# Extract FW_MAIN_? region and minimize it if the last file is empty, so it
# doesn't contain this empty file (that can have a significant size),
# improving a lot on hash times due to a smaller amount of data loaded from
# firmware storage.
# When passing the minimized image to vbutil_firmware, its length is recorded
# in the keyblock, and coreboot's vboot code clips the region_device to match,
# which prevents any potential extension attacks.
$(obj)/FW_MAIN_%.bin: $(obj)/coreboot.rom
$(CBFSTOOL) $< truncate -r $(basename $(notdir $@)) > $@.tmp.size
$(CBFSTOOL) $< read -r $(basename $(notdir $@)) -f $@.tmp
head -c $$( printf "%d" $$(cat $@.tmp.size)) $@.tmp > $@.tmp2
mv $@.tmp2 $@
rm -f $@.tmp $@.tmp.size
$(obj)/VBLOCK_%.bin: $(obj)/FW_MAIN_%.bin $(FUTILITY)
$(FUTILITY) vbutil_firmware \
--vblock $@ \
--keyblock "$(CONFIG_VBOOT_KEYBLOCK)" \
--signprivate "$(CONFIG_VBOOT_FIRMWARE_PRIVKEY)" \
--version $(CONFIG_VBOOT_KEYBLOCK_VERSION) \
--fv $< \
--kernelkey "$(CONFIG_VBOOT_KERNEL_KEY)" \
--flags $(CONFIG_VBOOT_KEYBLOCK_PREAMBLE_FLAGS)
files_added:: $(obj)/VBLOCK_A.bin $(obj)/VBLOCK_B.bin
$(CBFSTOOL) $(obj)/coreboot.rom write -u -r VBLOCK_A -f $(obj)/VBLOCK_A.bin
$(CBFSTOOL) $(obj)/coreboot.rom write -u -r VBLOCK_B -f $(obj)/VBLOCK_B.bin
endif # CONFIG_VBOOT
|
