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soc/intel/apollolake: add support for writing logical boot partition 2 

On apollolake the boot media layout is different in that the
traditional "BIOS" region contains another data structure with
the boot assets such as CSE firmware, PMC microcode,
CPU microcode, and boot firmware to name a few. There's also a
sort of recovery mechanism where there is a second data structure
with similar contents halfway through the "BIOS" region. This
second structure is referred as the logical boot partition 2 (LBP2),
and it's optionally employed.

Add support for writing the LBP2 to a specified FMAP region to
accommodate platforms which require it.

Change-Id: I1959a790f763b409238dea6b62408b42122e590e
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/14924
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Andrey Petrov <andrey.petrov@intel.com>
This commit is contained in:
Aaron Durbin 2016-05-20 10:48:44 -05:00
parent f6b1039f86
commit 9f444c351c
2 changed files with 26 additions and 0 deletions
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21
src/soc/intel/apollolake/Kconfig
View File

@ -130,4 +130,25 @@ config FSP_M_ADDR
help
The address FSP-M will be relocated to during build time
config NEED_LBP2
bool "Write contents for logical boot partition 2."
default n
help
Write the contents from a file into the logical boot partition 2
region defined by LBP2_FMAP_NAME.
config LBP2_FMAP_NAME
string "Name of FMAP region to put logical boot partition 2"
depends on NEED_LBP2
default "SIGN_CSE"
help
Name of FMAP region to write logical boot partition 2 data.
config LBP2_FILE_NAME
string "Path of file to write to logical boot partition 2 region"
depends on NEED_LBP2
default "3rdparty/blobs/mainboard/$(CONFIG_MAINBOARD_DIR)/lbp2.bin"
help
Name of file to store in the logical boot partition 2 region.
endif

5
src/soc/intel/apollolake/Makefile.inc
View File

@ -63,4 +63,9 @@ CPPFLAGS_common += -I$(src)/soc/intel/apollolake/include
# Since FSP-M runs in CAR we need to relocate it to a specific address
$(CONFIG_FSP_M_CBFS)-options := -b $(CONFIG_FSP_M_ADDR)
ifeq ($(CONFIG_NEED_LBP2),y)
files_added::
$(CBFSTOOL) $(obj)/coreboot.rom write -r $(CONFIG_LBP2_FMAP_NAME) -f $(CONFIG_LBP2_FILE_NAME) --fill-upward
endif
endif