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powerpc/boot: Add lzma support for uImage

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This patch allows to generate lzma compressed uImage

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Christophe Leroy 2019-06-14 10:16:24 +00:00 committed by Michael Ellerman
parent fbded57c96
commit 1cc9a21b0b
3 changed files with 7 additions and 1 deletions
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1
arch/powerpc/Kconfig
View file

@ -198,6 +198,7 @@ config PPC
select HAVE_IOREMAP_PROT
select HAVE_IRQ_EXIT_ON_IRQ_STACK
select HAVE_KERNEL_GZIP
select HAVE_KERNEL_LZMA if DEFAULT_UIMAGE
select HAVE_KERNEL_XZ if PPC_BOOK3S || 44x
select HAVE_KPROBES
select HAVE_KPROBES_ON_FTRACE

2
arch/powerpc/boot/Makefile
View file

@ -22,6 +22,7 @@ all: $(obj)/zImage
compress-$(CONFIG_KERNEL_GZIP) := CONFIG_KERNEL_GZIP
compress-$(CONFIG_KERNEL_XZ) := CONFIG_KERNEL_XZ
compress-$(CONFIG_KERNEL_LZMA) := CONFIG_KERNEL_LZMA
ifdef CROSS32_COMPILE
BOOTCC := $(CROSS32_COMPILE)gcc
@ -257,6 +258,7 @@ endif
compressor-$(CONFIG_KERNEL_GZIP) := gz
compressor-$(CONFIG_KERNEL_XZ) := xz
compressor-$(CONFIG_KERNEL_LZMA) := lzma
# args (to if_changed): 1 = (this rule), 2 = platform, 3 = dts 4=dtb 5=initrd
quiet_cmd_wrap = WRAP $@

5
arch/powerpc/boot/wrapper
View file

@ -137,7 +137,7 @@ while [ "$#" -gt 0 ]; do
-Z)
shift
[ "$#" -gt 0 ] || usage
[ "$1" != "gz" -o "$1" != "xz" -o "$1" != "none" ] || usage
[ "$1" != "gz" -o "$1" != "xz" -o "$1" != "lzma" -o "$1" != "none" ] || usage
compression=".$1"
uboot_comp=$1
@ -374,6 +374,9 @@ if [ -z "$cacheit" -o ! -f "$vmz$compression" -o "$vmz$compression" -ot "$kernel
.gz)
gzip -n -f -9 "$vmz.$$"
;;
.lzma)
xz --format=lzma -f -6 "$vmz.$$"
;;
*)
# drop the compression suffix so the stripped vmlinux is used
compression=