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-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