1  ## SPDX-License-Identifier: GPL-2.0-only
 2  
 3  ################################################################################
 4  ## Subdirectories
 5  ################################################################################
 6  subdirs-y += amd
 7  subdirs-y += armltd
 8  subdirs-y += intel
 9  subdirs-y += via
10  subdirs-$(CONFIG_ARCH_X86) += x86
11  subdirs-$(CONFIG_CPU_QEMU_X86) += qemu-x86
12  subdirs-$(CONFIG_CPU_POWER9) += power9
13  
14  $(eval $(call create_class_compiler,cpu_microcode,x86_32))
15  ################################################################################
16  ## Rules for building the microcode blob in CBFS
17  ################################################################################
18  
19  cbfs-files-$(CONFIG_USE_CPU_MICROCODE_CBFS_BINS) += cpu_microcode_blob.bin
20  
21  ifeq ($(CONFIG_CPU_MICROCODE_CBFS_EXTERNAL_HEADER),y)
22  cbfs-files-y  += cpu_microcode_blob.bin
23  cpu_microcode_blob.bin-file = $(objgenerated)/microcode.bin
24  
25  $(objgenerated)/microcode.bin: $(call strip_quotes,$(CONFIG_CPU_MICROCODE_HEADER_FILES))
26  	echo "   util/scripts/ucode_h_to_bin.sh $(objgenerated)/microcode.bin \"$(CONFIG_CPU_MICROCODE_HEADER_FILES)\""
27  	util/scripts/ucode_h_to_bin.sh $(objgenerated)/microcode.bin $(CONFIG_CPU_MICROCODE_HEADER_FILES)
28  endif
29  
30  ifeq ($(CONFIG_CPU_MICROCODE_CBFS_EXTERNAL_BINS),y)
31  $(obj)/cpu_microcode_blob.bin: cpu_microcode_bins := $(call strip_quotes,$(CONFIG_CPU_UCODE_BINARIES))
32  endif
33  # otherwise `cpu_microcode_bins` should be filled by platform makefiles
34  
35  # We just mash all microcode binaries together into one binary to rule them all.
36  # This approach assumes that the microcode binaries are properly padded, and
37  # their headers specify the correct size. This works fairly well on isolatied
38  # updates, such as Intel and some AMD microcode, but won't work very well if the
39  # updates are wrapped in a container, like AMD's microcode update container. If
40  # there is only one microcode binary (i.e. one container), then we don't have
41  # this issue, and this rule will continue to work.
42  $(obj)/cpu_microcode_blob.bin: $$(wildcard $$(cpu_microcode_bins)) $(DOTCONFIG)
43  	for bin in $(cpu_microcode_bins); do \
44  		if [ ! -f "$$bin" ]; then \
45  			echo "Microcode error: $$bin does not exist"; \
46  			NO_MICROCODE_FILE=1; \
47  		fi; \
48  	done; \
49  	if [ -n "$$NO_MICROCODE_FILE" ]; then \
50  		if [ -z "$(CONFIG_USE_BLOBS)" ] && [ -n "$(CONFIG_CPU_MICROCODE_CBFS_DEFAULT_BINS)" ]; then \
51  			echo "Try enabling binary-only repository in Kconfig 'General setup' menu."; \
52  		fi; \
53  		false; \
54  	fi
55  	$(if $(cpu_microcode_bins),,false) # fail if no file is given at all
56  	@printf "    MICROCODE  $(subst $(obj)/,,$(@))\n"
57  	@echo $(cpu_microcode_bins)
58  	cat $(cpu_microcode_bins) > $@
59  
60  cpu_microcode_blob.bin-file ?= $(obj)/cpu_microcode_blob.bin
61  cpu_microcode_blob.bin-type := microcode
62  # The AMD LPC SPI DMA controller requires source files to be 64 byte aligned.
63  ifeq ($(CONFIG_SOC_AMD_COMMON_BLOCK_LPC_SPI_DMA),y)
64  cpu_microcode_blob.bin-align := 64
65  else
66  cpu_microcode_blob.bin-align := 16
67  endif
68  
69  ifneq ($(CONFIG_CPU_MICROCODE_CBFS_LOC),)
70  cpu_microcode_blob.bin-COREBOOT-position := $(CONFIG_CPU_MICROCODE_CBFS_LOC)
71  endif