66 lines
2.8 KiB
Makefile
66 lines
2.8 KiB
Makefile
################################################################################
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## Subdirectories
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################################################################################
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subdirs-y += amd
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subdirs-y += armltd
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subdirs-y += intel
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subdirs-y += ti
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subdirs-$(CONFIG_ARCH_X86) += x86
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subdirs-$(CONFIG_CPU_QEMU_X86) += qemu-x86
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$(eval $(call create_class_compiler,cpu_microcode,x86_32))
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################################################################################
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## Rules for building the microcode blob in CBFS
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################################################################################
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ifneq ($(CONFIG_CPU_MICROCODE_MULTIPLE_FILES), y)
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cbfs-files-$(CONFIG_USE_CPU_MICROCODE_CBFS_BINS) += cpu_microcode_blob.bin
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endif
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ifeq ($(CONFIG_CPU_MICROCODE_CBFS_EXTERNAL_HEADER),y)
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cbfs-files-y += cpu_microcode_blob.bin
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cpu_microcode_blob.bin-file = $(objgenerated)/microcode.bin
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$(objgenerated)/microcode.bin: $(call strip_quotes,$(CONFIG_CPU_MICROCODE_HEADER_FILES))
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echo " util/scripts/ucode_h_to_bin.sh $(objgenerated)/microcode.bin \"$(CONFIG_CPU_MICROCODE_HEADER_FILES)\""
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util/scripts/ucode_h_to_bin.sh $(objgenerated)/microcode.bin $(CONFIG_CPU_MICROCODE_HEADER_FILES)
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endif
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ifeq ($(CONFIG_CPU_MICROCODE_CBFS_EXTERNAL_BINS),y)
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$(obj)/cpu_microcode_blob.bin: cpu_microcode_bins := $(call strip_quotes,$(CONFIG_CPU_UCODE_BINARIES))
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endif
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# otherwise `cpu_microcode_bins` should be filled by platform makefiles
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# We just mash all microcode binaries together into one binary to rule them all.
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# This approach assumes that the microcode binaries are properly padded, and
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# their headers specify the correct size. This works fairly well on isolatied
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# updates, such as Intel and some AMD microcode, but won't work very well if the
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# updates are wrapped in a container, like AMD's microcode update container. If
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# there is only one microcode binary (i.e. one container), then we don't have
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# this issue, and this rule will continue to work.
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$(obj)/cpu_microcode_blob.bin: $$(wildcard $$(cpu_microcode_bins))
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for bin in $(cpu_microcode_bins); do \
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if [ ! -f "$$bin" ]; then \
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echo "Microcode error: $$bin does not exist"; \
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NO_MICROCODE_FILE=1; \
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fi; \
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done; \
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if [ -n "$$NO_MICROCODE_FILE" ]; then \
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if [ -z "$(CONFIG_USE_BLOBS)" ] && [ -n "$(CONFIG_CPU_MICROCODE_CBFS_DEFAULT_BINS)" ]; then \
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echo "Try enabling binary-only repository in Kconfig 'General setup' menu."; \
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fi; \
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false; \
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fi
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$(if $^,,false) # fail if no file is given at all
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@printf " MICROCODE $(subst $(obj)/,,$(@))\n"
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@echo $(cpu_microcode_bins)
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cat $^ > $@
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cpu_microcode_blob.bin-file ?= $(obj)/cpu_microcode_blob.bin
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cpu_microcode_blob.bin-type := microcode
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cpu_microcode_blob.bin-align := 16
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ifneq ($(CONFIG_CPU_MICROCODE_CBFS_LOC),)
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cpu_microcode_blob.bin-COREBOOT-position := $(CONFIG_CPU_MICROCODE_CBFS_LOC)
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endif
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