powerpc/boot: Add lzo support for uImage

This patch allows to generate lzo compressed uImage

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 016bd35..12cee37 100644 (file)
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -199,6 +199,7 @@ config PPC
        select HAVE_IRQ_EXIT_ON_IRQ_STACK
        select HAVE_KERNEL_GZIP
        select HAVE_KERNEL_LZMA                 if DEFAULT_UIMAGE
+       select HAVE_KERNEL_LZO                  if DEFAULT_UIMAGE
        select HAVE_KERNEL_XZ                   if PPC_BOOK3S || 44x
        select HAVE_KPROBES
        select HAVE_KPROBES_ON_FTRACE

diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index 9b7b11a..36fb51a 100644 (file)
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -23,6 +23,7 @@ all: $(obj)/zImage
 compress-$(CONFIG_KERNEL_GZIP) := CONFIG_KERNEL_GZIP
 compress-$(CONFIG_KERNEL_XZ)   := CONFIG_KERNEL_XZ
 compress-$(CONFIG_KERNEL_LZMA) := CONFIG_KERNEL_LZMA
+compress-$(CONFIG_KERNEL_LZO)   := CONFIG_KERNEL_LZO
 
 ifdef CROSS32_COMPILE
     BOOTCC := $(CROSS32_COMPILE)gcc
@@ -259,6 +260,7 @@ endif
 compressor-$(CONFIG_KERNEL_GZIP) := gz
 compressor-$(CONFIG_KERNEL_XZ)   := xz
 compressor-$(CONFIG_KERNEL_LZMA)   := lzma
+compressor-$(CONFIG_KERNEL_LZO) := lzo
 
 # args (to if_changed): 1 = (this rule), 2 = platform, 3 = dts 4=dtb 5=initrd
 quiet_cmd_wrap = WRAP    $@

diff --git a/arch/powerpc/boot/wrapper b/arch/powerpc/boot/wrapper
index 51dc42f..4ed18d6 100755 (executable)
--- a/arch/powerpc/boot/wrapper
+++ b/arch/powerpc/boot/wrapper
@@ -137,7 +137,7 @@ while [ "$#" -gt 0 ]; do
     -Z)
        shift
        [ "$#" -gt 0 ] || usage
-        [ "$1" != "gz" -o "$1" != "xz" -o "$1" != "lzma" -o "$1" != "none" ] || usage
+        [ "$1" != "gz" -o "$1" != "xz" -o "$1" != "lzma" -o "$1" != "lzo" -o "$1" != "none" ] || usage
 
        compression=".$1"
        uboot_comp=$1
@@ -377,6 +377,9 @@ if [ -z "$cacheit" -o ! -f "$vmz$compression" -o "$vmz$compression" -ot "$kernel
     .lzma)
         xz --format=lzma -f -6 "$vmz.$$"
        ;;
+    .lzo)
+        lzop -f -9 "$vmz.$$"
+       ;;
     *)
         # drop the compression suffix so the stripped vmlinux is used
         compression=