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arm64: msm: Add support for uncompressed kernel image

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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: Atanas Filipov <afilipov@codeaurora.org>
Signed-off-by: Rishabh Bhatnagar <rishabhb@codeaurora.org>
Signed-off-by: Elliot Berman <eberman@codeaurora.org>
This commit is contained in:
Atanas Filipov 2018-04-16 16:14:22 +05:30 • committed by Elliot Berman
commit c3e200ccaf
2 changed files with 34 additions and 3 deletions
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26
arch/arm64/Kconfig
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@ -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

11
arch/arm64/Makefile
View file

@ -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) $(boot)/$@