On Tue, Jan 26, 2010 at 05:04:03PM +0800, Wu Zhangjin wrote: > This patch adds a new DEBUG_ZBOOT option to allow the developers to > debug the compressed kernel support for a new board. > > Signed-off-by: Wu Zhangjin <wuzhangjin@xxxxxxxxx> > --- > arch/mips/Kconfig.debug | 18 ++++++++++++++++++ > arch/mips/boot/compressed/Makefile | 2 ++ > 2 files changed, 20 insertions(+), 0 deletions(-) > > diff --git a/arch/mips/Kconfig.debug b/arch/mips/Kconfig.debug > index d2b88a0..b3e20f4 100644 > --- a/arch/mips/Kconfig.debug > +++ b/arch/mips/Kconfig.debug > @@ -102,4 +102,22 @@ 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 SYS_SUPPORTS_ZBOOT_UART16550 This should probably depend on DEBUG_KERNEL also. > + 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 91a57a6..68e5db8 100644 > --- a/arch/mips/boot/compressed/Makefile > +++ b/arch/mips/boot/compressed/Makefile > @@ -32,7 +32,9 @@ 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) += $(obj)/uart-16550.o > +endif DEBUG_ZBOOT already depends on SYS_SUPPORTS_ZBOOT_UART16550 so this can be simplified into just obj-$(CONFIG_DEBUG_ZBOOT) and no ifdef. Ralf
