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authorDaniel Hellstrom <daniel@gaisler.com>2011-01-26 06:36:35 +0000
committerDavid S. Miller <davem@davemloft.net>2011-03-16 18:19:04 -0700
commit684151a75bf25f5aeb8a23010da91a34e17b7353 (patch)
treea738b589dfaf8a524a606a7b26f0f2a8d34bdd90
parent44ed3c0c47906297924c3fde801dc160f6996f7c (diff)
downloadop-kernel-dev-684151a75bf25f5aeb8a23010da91a34e17b7353.zip
op-kernel-dev-684151a75bf25f5aeb8a23010da91a34e17b7353.tar.gz
sparc32: added U-Boot build target: uImage
This is only for LEON as u-boot for SPARC only supports LEON. Signed-off-by: Daniel Hellstrom <daniel@gaisler.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--arch/sparc/Kconfig33
-rw-r--r--arch/sparc/Makefile3
-rw-r--r--arch/sparc/boot/Makefile31
3 files changed, 66 insertions, 1 deletions
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 13d2b67..e48f471 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -461,6 +461,39 @@ config SPARC_LEON
from www.gaisler.com. You can download a sparc-linux cross-compilation
toolchain at www.gaisler.com.
+if SPARC_LEON
+menu "U-Boot options"
+
+config UBOOT_LOAD_ADDR
+ hex "uImage Load Address"
+ default 0x40004000
+ ---help---
+ U-Boot kernel load address, the address in physical address space
+ where u-boot will place the Linux kernel before booting it.
+ This address is normally the base address of main memory + 0x4000.
+
+config UBOOT_FLASH_ADDR
+ hex "uImage.o Load Address"
+ default 0x00080000
+ ---help---
+ Optional setting only affecting the uImage.o ELF-image used to
+ download the uImage file to the target using a ELF-loader other than
+ U-Boot. It may for example be used to download an uImage to FLASH with
+ the GRMON utility before even starting u-boot.
+
+config UBOOT_ENTRY_ADDR
+ hex "uImage Entry Address"
+ default 0xf0004000
+ ---help---
+ Do not change this unless you know what you're doing. This is
+ hardcoded by the SPARC32 and LEON port.
+
+ This is the virtual address u-boot jumps to when booting the Linux
+ Kernel.
+
+endmenu
+endif
+
endmenu
menu "Bus options (PCI etc.)"
diff --git a/arch/sparc/Makefile b/arch/sparc/Makefile
index 113225b..ad1fb5d 100644
--- a/arch/sparc/Makefile
+++ b/arch/sparc/Makefile
@@ -88,7 +88,7 @@ boot := arch/sparc/boot
# Default target
all: zImage
-image zImage tftpboot.img vmlinux.aout: vmlinux
+image zImage uImage tftpboot.img vmlinux.aout: vmlinux
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
archclean:
@@ -102,6 +102,7 @@ ifeq ($(ARCH),sparc)
define archhelp
echo '* image - kernel image ($(boot)/image)'
echo '* zImage - stripped kernel image ($(boot)/zImage)'
+ echo ' uImage - U-Boot SPARC32 Image (only for LEON)'
echo ' tftpboot.img - image prepared for tftp'
endef
else
diff --git a/arch/sparc/boot/Makefile b/arch/sparc/boot/Makefile
index a2c5898..9205416 100644
--- a/arch/sparc/boot/Makefile
+++ b/arch/sparc/boot/Makefile
@@ -5,6 +5,7 @@
ROOT_IMG := /usr/src/root.img
ELFTOAOUT := elftoaout
+MKIMAGE := $(srctree)/scripts/mkuboot.sh
hostprogs-y := piggyback btfixupprep
targets := tftpboot.img btfix.o btfix.S image zImage vmlinux.aout
@@ -77,6 +78,36 @@ $(obj)/zImage: $(obj)/image
$(obj)/vmlinux.aout: vmlinux FORCE
$(call if_changed,elftoaout)
@echo ' kernel: $@ is ready'
+else
+
+# The following lines make a readable image for U-Boot.
+# uImage - Binary file read by U-boot
+# uImage.o - object file of uImage for loading with a
+# flash programmer understanding ELF.
+
+OBJCOPYFLAGS_image.bin := -S -O binary -R .note -R .comment
+$(obj)/image.bin: $(obj)/image FORCE
+ $(call if_changed,objcopy)
+
+$(obj)/image.gz: $(obj)/image.bin
+ $(call if_changed,gzip)
+
+quiet_cmd_uimage = UIMAGE $@
+ cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A sparc -O linux -T kernel \
+ -C gzip -a $(CONFIG_UBOOT_LOAD_ADDR) \
+ -e $(CONFIG_UBOOT_ENTRY_ADDR) -n 'Linux-$(KERNELRELEASE)' \
+ -d $< $@
+
+quiet_cmd_uimage.o = UIMAGE.O $@
+ cmd_uimage.o = $(LD) -Tdata $(CONFIG_UBOOT_FLASH_ADDR) \
+ -r -b binary $@ -o $@.o
+
+targets += uImage
+$(obj)/uImage: $(obj)/image.gz
+ $(call if_changed,uimage)
+ $(call if_changed,uimage.o)
+ @echo ' Image $@ is ready'
+
endif
$(obj)/tftpboot.img: $(obj)/image $(obj)/piggyback System.map $(ROOT_IMG) FORCE
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