On Tue, 2012-03-06 at 17:30 -0700, Stephen Warren wrote: > This allows the user to use U-Boot's mkimage's -T kernel_noload option > if their arch Kconfig allows it, and they desire. > > Signed-off-by: Stephen Warren <swarren@xxxxxxxxxxxxx> > --- > The next patch enables this new CONFIG_ALLOW_ option for ARM. I assume > that some other architectures will also be able to enable it, but I'm > not familiar enough with any to know which. > > init/Kconfig | 15 +++++++++++++++ > scripts/Makefile.lib | 15 ++++++++++++--- > 2 files changed, 27 insertions(+), 3 deletions(-) > > diff --git a/init/Kconfig b/init/Kconfig > index 6cfd71d..2035562 100644 > --- a/init/Kconfig > +++ b/init/Kconfig > @@ -203,6 +203,21 @@ config KERNEL_LZO > > endchoice > > +config ALLOW_UIMAGE_KERNEL_NOLOAD > + bool > + > +config UIMAGE_KERNEL_NOLOAD > + bool "Use mkimage's -T kernel_noload instead of -T kernel" > + depends on ALLOW_UIMAGE_KERNEL_NOLOAD > + help > + uImage files of type "kernel" embed an absolute load and entry point > + address. If the uImage is loaded to a different address, then the > + image must be copied the uImage file to the specified load address. > + This copy is a waste of time if the uImage is in fact completely > + relocatable. If your kernel and bootloader support it, you can build > + a "kernel_noload" uImage rather than a "kernel" uImage, which > + prevents any such copying. If unsure say N. > + > config DEFAULT_HOSTNAME > string "Default hostname" > default "(none)" > diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib > index 7b0be18..d9c1c87 100644 > --- a/scripts/Makefile.lib > +++ b/scripts/Makefile.lib > @@ -314,9 +314,18 @@ MKIMAGE := $(srctree)/scripts/mkuboot.sh > UIMAGE_ARCH = $(SRCARCH) > UIMAGE_COMPRESSION = $(if $(2),$(2),none) > UIMAGE_OPTS-y = > -UIMAGE_TYPE = kernel > -UIMAGE_LOADADDR=arch_must_set_this > -UIMAGE_ENTRYADDR=$(UIMAGE_LOADADDR) > +ifeq ($(CONFIG_UIMAGE_KERNEL_NOLOAD),y) > + UIMAGE_TYPE = kernel_noload > + # Unused by bootloader: > + UIMAGE_LOADADDR=0 > + # Entry point relative to actual load address: > + UIMAGE_ENTRYADDR=0 > +else > + UIMAGE_TYPE = kernel > + # Absolute addresses: > + UIMAGE_LOADADDR=arch_must_set_this > + UIMAGE_ENTRYADDR=$(UIMAGE_LOADADDR) > +endif > UIMAGE_NAME = 'Linux-$(KERNELRELEASE)' > UIMAGE_IN = $< > UIMAGE_OUT = $@ Hi, Stephen, It seems that UIMAGE_ARCH and UIMAGE_LOADADDR can't be modified from arch-Makefiles. Regards, Guan Xuetao -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
