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payloads: add support lz4 compression 

Add the option to use the lz4 compression method
to compress payloads.
Also sets LZ4 as the default compression method.

Change-Id: Ic712f984f791d268440c8463eaea0d246aa31d99
Signed-off-by: Antonello Dettori <dev@dettori.io>
Reviewed-on: https://review.coreboot.org/15817
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Antonello Dettori 2016-07-23 17:11:44 +02:00 committed by Stefan Reinauer
parent 1898023fb1
commit fbcfdaf785
2 changed files with 18 additions and 3 deletions
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3
Makefile.inc
View File

@ -345,6 +345,9 @@ CBFS_PAYLOAD_COMPRESS_FLAG:=none
ifeq ($(CONFIG_COMPRESSED_PAYLOAD_LZMA),y)
CBFS_PAYLOAD_COMPRESS_FLAG:=LZMA
endif
ifeq ($(CONFIG_COMPRESSED_PAYLOAD_LZ4),y)
CBFS_PAYLOAD_COMPRESS_FLAG:=LZ4
endif
CBFS_PRERAM_COMPRESS_FLAG:=none
ifeq ($(CONFIG_COMPRESS_PRERAM_STAGES),y)

18
payloads/Kconfig
View File

@ -49,15 +49,27 @@ config PAYLOAD_FILE
help
The path and filename of the ELF executable file to use as payload.
# TODO: Defined if no payload? Breaks build?
choice
prompt "Payload compression algorithm"
default COMPRESSED_PAYLOAD_LZ4
depends on !PAYLOAD_NONE && !PAYLOAD_LINUX
help
Choose the compression algorithm for the chosen payloads.
You can choose between LZMA and LZ4.
config COMPRESSED_PAYLOAD_LZMA
bool "Use LZMA compression for payloads"
default y
depends on !PAYLOAD_NONE && !PAYLOAD_LINUX
help
In order to reduce the size payloads take up in the ROM chip
coreboot can compress them using the LZMA algorithm.
config COMPRESSED_PAYLOAD_LZ4
bool "Use LZ4 compression for payloads"
help
In order to reduce the size payloads take up in the ROM chip
coreboot can compress them using the LZ4 algorithm.
endchoice
config PAYLOAD_OPTIONS
string
default ""