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-rw-r--r--src/cpu/Kconfig31
-rw-r--r--src/cpu/Makefile.inc11
2 files changed, 41 insertions, 1 deletions
diff --git a/src/cpu/Kconfig b/src/cpu/Kconfig
index 9b9413c72c..a026b28ebd 100644
--- a/src/cpu/Kconfig
+++ b/src/cpu/Kconfig
@@ -67,8 +67,16 @@ config SUPPORT_CPU_UCODE_IN_CBFS
bool
default n
+config USES_MICROCODE_HEADER_FILES
+ def_bool n
+ select SUPPORT_CPU_UCODE_IN_CBFS
+ help
+ This is selected by a board or chipset to set the default for the
+ microcode source choice to a list of external microcode headers
+
choice
prompt "Include CPU microcode in CBFS" if ARCH_X86
+ default CPU_MICROCODE_CBFS_EXTERNAL_HEADER if USES_MICROCODE_HEADER_FILES
default CPU_MICROCODE_CBFS_GENERATE if SUPPORT_CPU_UCODE_IN_CBFS && USE_BLOBS
default CPU_MICROCODE_CBFS_NONE if !SUPPORT_CPU_UCODE_IN_CBFS
@@ -84,6 +92,22 @@ config CPU_MICROCODE_CBFS_GENERATE
If unsure, select this option.
+config CPU_MICROCODE_CBFS_EXTERNAL_HEADER
+ bool "Include external microcode header files"
+ help
+ Select this option if you want to include external c header files
+ containing the CPU microcode. This will be included as a separate
+ file in CBFS.
+
+ A word of caution: only select this option if you are sure the
+ microcode that you have is newer than the microcode shipping with
+ coreboot.
+
+ The microcode file may be removed from the ROM image at a later
+ time with cbfstool, if desired.
+
+ If unsure, select "Generate from tree"
+
config CPU_MICROCODE_CBFS_NONE
bool "Do not include microcode updates"
help
@@ -135,3 +159,10 @@ config CPU_MICROCODE_MULTIPLE_FILES
help
Select this option to install separate microcode container files into
CBFS instead of using the traditional monolithic microcode file format.
+
+config CPU_MICROCODE_HEADER_FILES
+ string "List of space separated microcode header files with the path"
+ depends on CPU_MICROCODE_CBFS_EXTERNAL_HEADER
+ help
+ A list of one or more microcode header files with path from the
+ coreboot directory. These should be separated by spaces.
diff --git a/src/cpu/Makefile.inc b/src/cpu/Makefile.inc
index 517cbfaaf5..046c418554 100644
--- a/src/cpu/Makefile.inc
+++ b/src/cpu/Makefile.inc
@@ -21,6 +21,15 @@ ifneq ($(CONFIG_CPU_MICROCODE_MULTIPLE_FILES), y)
cbfs-files-$(CONFIG_CPU_MICROCODE_CBFS_GENERATE) += cpu_microcode_blob.bin
endif
+ifeq ($(CONFIG_CPU_MICROCODE_CBFS_EXTERNAL_HEADER),y)
+cbfs-files-y += cpu_microcode_blob.bin
+cpu_microcode_blob.bin-file = $(objgenerated)/microcode.bin
+
+$(objgenerated)/microcode.bin:
+ echo " util/scripts/ucode_h_to_bin.sh $(objgenerated)/microcode.bin \"$(CONFIG_CPU_MICROCODE_HEADER_FILES)\""
+ util/scripts/ucode_h_to_bin.sh $(objgenerated)/microcode.bin $(CONFIG_CPU_MICROCODE_HEADER_FILES)
+endif
+
# We just mash all microcode binaries together into one binary to rule them all.
# This approach assumes that the microcode binaries are properly padded, and
# their headers specify the correct size. This works fairly well on isolatied
@@ -33,7 +42,7 @@ $(obj)/cpu_microcode_blob.bin: $$(cpu_microcode_bins)
@echo $(cpu_microcode_bins)
cat /dev/null $+ > $@
-cpu_microcode_blob.bin-file := $(obj)/cpu_microcode_blob.bin
+cpu_microcode_blob.bin-file ?= $(obj)/cpu_microcode_blob.bin
cpu_microcode_blob.bin-type := microcode
ifneq ($(CONFIG_CPU_MICROCODE_CBFS_LOC),)