src/cpu/Makefile.mk

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