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authorWu Zhangjin <wuzhangjin@gmail.com>2009-10-14 18:12:16 +0800
committerRalf Baechle <ralf@linux-mips.org>2009-12-17 01:56:56 +0000
commit1b93b3c3e94be2605759735a89fc935ba5f58dcf (patch)
tree1d49ea7cca709e0380d5463357deb1c632308cc0 /arch/mips/Kconfig
parentbea4c899f2b5fad80099aea979780ef19f9b1987 (diff)
MIPS: Add support for GZIP / BZIP2 / LZMA compressed kernel images
This patch helps to generate smaller kernel images for linux-MIPS, Here is the effect when using lzma: $ ls -sh vmlinux 7.1M vmlinux $ ls -sh vmlinuz 1.5M vmlinuz Have tested the 32bit kernel on Qemu/Malta and 64bit kernel on FuLoong Mini PC. both of them work well. and also, tested by Alexander Clouter on an AR7 based Linksys WAG54Gv2, and by Manuel Lauss on an Alchemy board. This -v2 version incorporate the feedback from Ralf, and add the following changes: 1. add .ecoff, .bin, .erec format support 2. only enable it and the debug source code for the machines we tested 3. a dozen of fixups and cleanups and if you want to enable it for your board, please try to select SYS_SUPPORTS_ZBOOT for it, and if the board have an 16550 compatible uart, you can select SYS_SUPPORTS_ZBOOT_UART16550 directly. and then sending the relative patches to Ralf. Tested-by: Manuel Lauss <manuel.lauss@googlemail.com> Tested-by: Alexander Clouter <alex@digriz.org.uk> Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/Kconfig')
-rw-r--r--arch/mips/Kconfig14
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index fd7620f025fa..f6f3b990d837 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -22,6 +22,7 @@ choice
config MACH_ALCHEMY
bool "Alchemy processor based machines"
+ select SYS_SUPPORTS_ZBOOT
config AR7
bool "Texas Instruments AR7"
@@ -36,6 +37,7 @@ config AR7
select SYS_HAS_EARLY_PRINTK
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_LITTLE_ENDIAN
+ select SYS_SUPPORTS_ZBOOT_UART16550
select GENERIC_GPIO
select GCD
select VLYNQ
@@ -192,6 +194,7 @@ config LASAT
config MACH_LOONGSON
bool "Loongson family of machines"
+ select SYS_SUPPORTS_ZBOOT_UART16550
help
This enables the support of Loongson family of machines.
@@ -233,6 +236,7 @@ config MIPS_MALTA
select SYS_SUPPORTS_MIPS_CMP
select SYS_SUPPORTS_MULTITHREADING
select SYS_SUPPORTS_SMARTMIPS
+ select SYS_SUPPORTS_ZBOOT
help
This enables support for the MIPS Technologies Malta evaluation
board.
@@ -1294,6 +1298,16 @@ config CPU_CAVIUM_OCTEON
endchoice
+config SYS_SUPPORTS_ZBOOT
+ bool
+ select HAVE_KERNEL_GZIP
+ select HAVE_KERNEL_BZIP2
+ select HAVE_KERNEL_LZMA
+
+config SYS_SUPPORTS_ZBOOT_UART16550
+ bool
+ select SYS_SUPPORTS_ZBOOT
+
config CPU_LOONGSON2
bool
select CPU_SUPPORTS_32BIT_KERNEL