patchme

Uboot源码,非常通用的bootloader.适用于各种平台的Linux系统引导.

# master confi.mk
echo "CROSS_COMPILE = powerpc-linux-"	>>include/config.mk

# patch the examples/Makefile to ignore return value from OBJCOPY
sed  -e 's/$(OBJCOPY)/-&/' < examples/Makefile > examples/makefile

# add a built target for mkimage on the target architecture
sed  -e 's/^all:.*$/all: .depend envcrc mkimage mkimage.ppc/' < tools/Makefile > tools/makefile

cat <<EOF >>tools/makefile
mkimage.ppc : mkimage.o.ppc crc32.o.ppc
	powerpc-linux-gcc -msoft-float -Wall -Wstrict-prototypes -o \$@ \$^
	powerpc-linux-strip $@

XFLAGS="-D__KERNEL__  -I../include -DCONFIG_4xx -Wall -Wstict-prototypes"
mkimage.o.ppc: mkimage.c
	powerpc-linux-gcc -msoft-float -Wall -I../include -c -o \$@ \$^

crc32.o.ppc: crc32.c
	powerpc-linux-gcc -msoft-float -Wall -I../include -c -o \$@ \$^

EOF

# make an image by default out of the u-boot image
sed  -e 's/^all:.*$/all: u-boot.image /' < Makefile > makefile
cat <<EOF >>makefile
u-boot.image:  u-boot.bin
	tools/mkimage -A ppc -O linux -T firmware -C none -a 0 -e 0 -n U-Boot -d \$^ \$@

EOF