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| author | Arthur Heymans <arthur@aheymans.xyz> | 2021-02-08 22:38:40 +0100 |
|---|---|---|
| committer | Arthur Heymans <arthur@aheymans.xyz> | 2021-03-30 11:45:46 +0000 |
| commit | 15412c0681970e49ea34715a6efbfc43dfc87e60 (patch) | |
| tree | f5254ed63961c5e837ae34c4b299fbe74ab37933 /src/security/intel/cbnt | |
| parent | 5e0119eaf6fce0ddd78dd75413bdeb5e9a774418 (diff) | |
security/intel/cbnt: Add option to generate BPM
This add an option to generate BPM using the 9elements bg-prov tool
using a json config file.
A template for the json config file can be obtained via
"bg-prov template".
Another option is to extract it from a working configuration:
"bg-prov read-config".
The option to just include a provided BPM binary is kept.
Change-Id: I38808ca56953b80bac36bd186932d6286a79bebe
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50411
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Christian Walter <christian.walter@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/security/intel/cbnt')
| -rw-r--r-- | src/security/intel/cbnt/Kconfig | 11 | ||||
| -rw-r--r-- | src/security/intel/cbnt/Makefile.inc | 18 |
2 files changed, 28 insertions, 1 deletions
diff --git a/src/security/intel/cbnt/Kconfig b/src/security/intel/cbnt/Kconfig index 6142a2498e..7df09b4b1b 100644 --- a/src/security/intel/cbnt/Kconfig +++ b/src/security/intel/cbnt/Kconfig @@ -47,9 +47,17 @@ config INTEL_CBNT_BG_PROV_KM_USE_CFG_FILE Select y to generate KM from a json config file. Select n to generate KM from Kconfig options +config INTEL_CBNT_GENERATE_BPM + bool "Generate Boot Policy Manifest (BPM)" + default y + select INTEL_CBNT_NEED_BPM_PRIV_KEY + help + Select y to generate the Boot Policy Manifest (BPM). + Select n to include a BPM binary. + config INTEL_CBNT_BG_PROV_CFG_FILE string "CBnT json config file" - depends on INTEL_CBNT_BG_PROV_KM_USE_CFG_FILE + depends on INTEL_CBNT_BG_PROV_KM_USE_CFG_FILE || INTEL_CBNT_GENERATE_BPM help Location of the bg-prov json config file. Either get a sample JSON config file: @@ -140,6 +148,7 @@ config INTEL_CBNT_KEY_MANIFEST_BINARY config INTEL_CBNT_BOOT_POLICY_MANIFEST_BINARY string "BPM (Boot Policy Manifest) binary location" + depends on !INTEL_CBNT_GENERATE_BPM help Location of the Boot Policy Manifest (BPM) diff --git a/src/security/intel/cbnt/Makefile.inc b/src/security/intel/cbnt/Makefile.inc index eae3079528..b73a7eac35 100644 --- a/src/security/intel/cbnt/Makefile.inc +++ b/src/security/intel/cbnt/Makefile.inc @@ -33,6 +33,23 @@ $(BG_PROV): $(CBNT_CFG): $(call strip_quotes, $(CONFIG_INTEL_CBNT_BG_PROV_CFG_FILE)) cp $(CONFIG_INTEL_CBNT_BG_PROV_CFG_FILE) $@ +ifeq ($(CONFIG_INTEL_CBNT_GENERATE_BPM),y) +$(obj)/bpm_unsigned.bin: $(obj)/coreboot.rom $(BG_PROV) $(CBNT_CFG) + printf " BG_PROV creating unsigned BPM using config file\n" + $(BG_PROV) bpm-gen $@ $< --config=$(CBNT_CFG) --cut + +$(obj)/bpm.bin: $(obj)/bpm_unsigned.bin $(BG_PROV) $(call strip_quotes, $(CONFIG_INTEL_CBNT_BPM_PRIV_KEY_FILE)) + printf " BG_PROV signing real BPM\n" + $(BG_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 + 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 $(obj)/coreboot.rom + +else # CONFIG_INTEL_CBNT_GENERATE_BPM ifneq ($(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) @@ -42,6 +59,7 @@ 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_BG_PROV_KM_USE_CFG_FILE),y) |