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| author | Wu Zhangjin <wuzhangjin@gmail.com> | 2010-01-31 20:39:40 +0800 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2010-02-27 12:53:24 +0100 |
| commit | f86a69b15f60965a224e7e2516ad41070692cc19 (patch) | |
| tree | 9518ffe0e5128114be5651589d94f184a349d100 /arch | |
| parent | b66bb6090d9aa36931911e34d3f069932934b6fe (diff) | |
| download | op-kernel-dev-f86a69b15f60965a224e7e2516ad41070692cc19.zip op-kernel-dev-f86a69b15f60965a224e7e2516ad41070692cc19.tar.gz | |
MIPS: Make the debugging of compressed kernel configurable
This patch adds a new DEBUG_ZBOOT option to allow the users to enable it
to debug the compressed kernel support for a new board and this optoin
should be disabled to reduce the kernel image size and speed up the
kernel booting procedure when the compressed kernel support is stable.
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
To: Ralf Baechle <ralf@linux-mips.org>
Cc: Manuel Lauss <manuel.lauss@googlemail.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/918/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/Kconfig.debug | 19 | ||||
| -rw-r--r-- | arch/mips/boot/compressed/Makefile | 2 |
2 files changed, 21 insertions, 0 deletions
diff --git a/arch/mips/Kconfig.debug b/arch/mips/Kconfig.debug index d2b88a0..32a010d 100644 --- a/arch/mips/Kconfig.debug +++ b/arch/mips/Kconfig.debug @@ -102,4 +102,23 @@ config RUNTIME_DEBUG arch/mips/include/asm/debug.h for debugging macros. If unsure, say N. +config DEBUG_ZBOOT + bool "Enable compressed kernel support debugging" + depends on DEBUG_KERNEL && SYS_SUPPORTS_ZBOOT + default n + help + If you want to add compressed kernel support to a new board, and the + board supports uart16550 compatible serial port, please select + SYS_SUPPORTS_ZBOOT_UART16550 for your board and enable this option to + debug it. + + If your board doesn't support uart16550 compatible serial port, you + can try to select SYS_SUPPORTS_ZBOOT and use the other methods to + debug it. for example, add a new serial port support just as + arch/mips/boot/compressed/uart-16550.c does. + + After the compressed kernel support works, please disable this option + to reduce the kernel image size and speed up the booting procedure a + little. + endmenu diff --git a/arch/mips/boot/compressed/Makefile b/arch/mips/boot/compressed/Makefile index 76d6930..790ddd3 100644 --- a/arch/mips/boot/compressed/Makefile +++ b/arch/mips/boot/compressed/Makefile @@ -35,8 +35,10 @@ KBUILD_AFLAGS := $(LINUXINCLUDE) $(KBUILD_AFLAGS) -D__ASSEMBLY__ \ obj-y := $(obj)/head.o $(obj)/decompress.o $(obj)/dbg.o +ifdef CONFIG_DEBUG_ZBOOT obj-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o obj-$(CONFIG_MACH_ALCHEMY) += $(obj)/uart-alchemy.o +endif OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S $(obj)/vmlinux.bin: $(KBUILD_IMAGE) |
