diff options
| author | Vadim Bendebury <vbendeb@chromium.org> | 2012-06-19 08:34:51 -0700 |
|---|---|---|
| committer | Stefan Reinauer <stefan.reinauer@coreboot.org> | 2012-07-24 22:18:04 +0200 |
| commit | 39fea6e2a87aa79e6b156c96f0b2ba3ae9a35ba2 (patch) | |
| tree | 15597b36c92ba8d75709bc68038185aeea9fe6a1 /src/cpu/intel/microcode | |
| parent | 537b4e09e644107ed644cd88f8a7fd488406b9a2 (diff) | |
Add microcode blob processing
When microcode storage in CBFS is enabled, the make system is supposed
to generate the microcode blob and place it into the generated ROM
image as a CBFS component.
The microcode source representation does not change: it is still an
array of 32 bit constants. This new addition compiles the array into a
separate object file and then strips all sections but data.
The raw data section is then included into CBFS as a file named
'microcode_blob.bin' of type 0x53, which is assigned to microcode
storage.
Change-Id: I84ae040be52f520b106e3471c7e391e64d7847d9
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: http://review.coreboot.org/1295
Tested-by: build bot (Jenkins)
Diffstat (limited to 'src/cpu/intel/microcode')
| -rw-r--r-- | src/cpu/intel/microcode/Makefile.inc | 14 | ||||
| -rw-r--r-- | src/cpu/intel/microcode/microcode_blob.c | 22 |
2 files changed, 36 insertions, 0 deletions
diff --git a/src/cpu/intel/microcode/Makefile.inc b/src/cpu/intel/microcode/Makefile.inc index 6631019f38..f4d01020d1 100644 --- a/src/cpu/intel/microcode/Makefile.inc +++ b/src/cpu/intel/microcode/Makefile.inc @@ -1 +1,15 @@ ramstage-y += microcode.c + + +ifeq ($(CONFIG_MICROCODE_IN_CBFS),y) + +SRC_PATH = src/cpu/intel/microcode +FLAGS = -I $(CONFIG_MICROCODE_INCLUDE_PATH) -include $(obj)/config.h +$(obj)/microcode_blob.o: $(SRC_PATH)/microcode_blob.c + $(CC) $(FLAGS) -MMD -c -o $@ $< + +$(obj)/microcode_blob.bin: $(obj)/microcode_blob.o + objcopy -j .data -O binary $< $@ + +-include $(obj)/microcode_blob.d +endif diff --git a/src/cpu/intel/microcode/microcode_blob.c b/src/cpu/intel/microcode/microcode_blob.c new file mode 100644 index 0000000000..69238a9f77 --- /dev/null +++ b/src/cpu/intel/microcode/microcode_blob.c @@ -0,0 +1,22 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2012 The ChromiumOS Authors. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +unsigned microcode[] = { +#include <microcode_blob.h> +}; |