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Commit c3e200cc authored by Atanas Filipov's avatar Atanas Filipov Committed by Elliot Berman
Browse files

arm64: msm: Add support for uncompressed kernel image 



Add support for uncompressed kernel image

[eberman@codeaurora.org: Removed dtb-related changes]
[eberman@codeaurora.org: Add extra description to Kconfig]
Change-Id: I62229187e1f3e0ec11ff4b5a31c36dcee86dc8b7
Signed-off-by: default avatarAtanas Filipov <afilipov@codeaurora.org>
Signed-off-by: default avatarRishabh Bhatnagar <rishabhb@codeaurora.org>
Signed-off-by: default avatarElliot Berman <eberman@codeaurora.org>
parent 9fe26405

arch/arm64/Kconfig

+26 −0
Original line number Diff line number Diff line
@@ -1591,6 +1591,32 @@ config DMI 


endmenu



choice

	prompt "Kernel compression method"

	default BUILD_ARM64_KERNEL_COMPRESSION_GZIP

	help

	  Allows choice between gzip compressed or uncompressed

	  kernel image. Decision is based on whether the bootloader

	  can handle (un)compressed kernel images. Most BLs are capable

	  of decomprssing kernel images and this is the default choice.



config BUILD_ARM64_KERNEL_COMPRESSION_GZIP

	bool "Build compressed kernel image"

	help

	  Build a kernel image using gzip

	  compression. gzip is based on the DEFLATE

	  algorithm. Check if your bootloader is

	  capable of decompressing images.



config BUILD_ARM64_UNCOMPRESSED_KERNEL

	bool "Build uncompressed kernel image"

	help

	  Build a kernel image without

	  compression. An uncompressed kernel

	  image may improve performance in

	  certain situations.

endchoice



config SYSVIPC_COMPAT

	def_bool y

	depends on COMPAT && SYSVIPC

arch/arm64/Makefile

+8 −3
Original line number Diff line number Diff line
@@ -135,12 +135,17 @@ core-$(CONFIG_CRYPTO) += arch/arm64/crypto/ 
libs-y		:= arch/arm64/lib/ $(libs-y)

core-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a



ifeq ($(CONFIG_BUILD_ARM64_KERNEL_COMPRESSION_GZIP),y)

KBUILD_TARGET   := Image.gz

else

KBUILD_TARGET   := Image

endif



# Default target when executing plain make

boot		:= arch/arm64/boot

KBUILD_IMAGE	:= $(boot)/Image.gz



all:	Image.gz

KBUILD_IMAGE	:= $(boot)/$(KBUILD_TARGET)



all:	$(KBUILD_TARGET)



Image: vmlinux

	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@