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| author | Oliver O'Halloran <oohall@gmail.com> | 2016-09-22 16:54:34 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-09-28 14:35:14 +1000 |
| commit | c762c69e106f2b41ef39981ba46bda0ae8119db5 (patch) | |
| tree | 5cc3b8264952c39f8c57a1f7cb467c1a38f24824 /arch/powerpc/boot/Makefile | |
| parent | f1e510bbb9f265acb4147a3a650882876a76d48b (diff) | |
powerpc/boot: Add support for XZ compression
This patch adds an option to use XZ compression for the kernel image.
Currently this is only enabled for 64-bit Book3S targets, which is
roughly equivalent to the platforms that use the kernel's zImage
wrapper, and that have been tested.
The bulk of the 32-bit platforms and 64-bit BookE use uboot images,
which relies on uboot implementing XZ. In future we can enable XZ
support for those targets once someone has tested it.
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/boot/Makefile')
| -rw-r--r-- | arch/powerpc/boot/Makefile | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile index 9fb451d0586e..eae2dc8bc218 100644 --- a/arch/powerpc/boot/Makefile +++ b/arch/powerpc/boot/Makefile @@ -20,6 +20,7 @@ all: $(obj)/zImage compress-$(CONFIG_KERNEL_GZIP) := CONFIG_KERNEL_GZIP +compress-$(CONFIG_KERNEL_XZ) := CONFIG_KERNEL_XZ BOOTCFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ -fno-strict-aliasing -Os -msoft-float -pipe \ @@ -226,6 +227,7 @@ endif endif compressor-$(CONFIG_KERNEL_GZIP) := gz +compressor-$(CONFIG_KERNEL_XZ) := xz # args (to if_changed): 1 = (this rule), 2 = platform, 3 = dts 4=dtb 5=initrd quiet_cmd_wrap = WRAP $@ @@ -433,6 +435,7 @@ clean-files += $(image-) $(initrd-) cuImage.* dtbImage.* treeImage.* \ # clean up files cached by wrapper clean-kernel-base := vmlinux.strip vmlinux.bin clean-kernel := $(addsuffix .gz,$(clean-kernel-base)) +clean-kernel += $(addsuffix .xz,$(clean-kernel-base)) # If not absolute clean-files are relative to $(obj). clean-files += $(addprefix $(objtree)/, $(clean-kernel)) |