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# This is an example file to generate boot.scr - a boot script for U-Boot
# Generate boot.scr:
# ./tools/mkimage -c none -A arm -T script -d autoboot.cmd boot.scr
#
# It requires a list of environment variables to be defined before load:
# platform dependent: board_name, fdtfile, console
# system dependent: mmcbootdev, mmcbootpart, mmcrootdev, mmcrootpart, rootfstype
#
setenv fdtaddr "40800000"
setenv initrdname "uInitrd"
setenv initrdaddr "42000000"
setenv loaddtb "load mmc ${mmcbootdev}:${mmcbootpart} ${fdtaddr} ${fdtfile}"
setenv loadinitrd "load mmc ${mmcbootdev}:${mmcbootpart} ${initrdaddr} ${initrdname}"
setenv loadkernel "load mmc ${mmcbootdev}:${mmcbootpart} '${kerneladdr}' '${kernelname}'"
setenv kernel_args "setenv bootargs ${console} root=/dev/mmcblk${mmcrootdev}p${mmcrootpart} rootfstype=${rootfstype} rootwait ${opts}"
#### Routine: check_dtb - check that target.dtb exists on boot partition
setenv check_dtb "
if test -e mmc '${mmcbootdev}':'${mmcbootpart}' '${fdtfile}'; then
run loaddtb;
setenv fdt_addr ${fdtaddr};
else
echo Warning! Booting without DTB: '${fdtfile}'!;
setenv fdt_addr;
fi;"
#### Routine: check_ramdisk - check that uInitrd exists on boot partition
setenv check_ramdisk "
if test -e mmc '${mmcbootdev}':'${mmcbootpart}' '${initrdname}'; then
echo "Found ramdisk image.";
run loadinitrd;
setenv initrd_addr ${initrdaddr};
else
echo Warning! Booting without RAMDISK: '${initrdname}'!;
setenv initrd_addr -;
fi;"
#### Routine: boot_fit - check that env $board_name is set and boot proper config of ITB image
setenv setboot_fit "
if test -e '${board_name}'; then
setenv fdt_addr ;
setenv initrd_addr ;
setenv kerneladdr 0x42000000;
setenv kernelname Image.itb;
setenv itbcfg "\"#${board_name}\"";
setenv imgbootcmd bootm;
else
echo Warning! Variable: \$board_name is undefined!;
fi"
#### Routine: setboot_uimg - prepare env to boot uImage
setenv setboot_uimg "
setenv kerneladdr 0x40007FC0;
setenv kernelname uImage;
setenv itbcfg ;
setenv imgbootcmd bootm;
run check_dtb;
run check_ramdisk;"
#### Routine: setboot_zimg - prepare env to boot zImage
setenv setboot_zimg "
setenv kerneladdr 0x40007FC0;
setenv kernelname zImage;
setenv itbcfg ;
setenv imgbootcmd bootz;
run check_dtb;
run check_ramdisk;"
#### Routine: boot_img - boot the kernel after env setup
setenv boot_img "
run loadkernel;
run kernel_args;
'${imgbootcmd}' '${kerneladdr}${itbcfg}' '${initrd_addr}' '${fdt_addr}';"
#### Routine: autoboot - choose proper boot path
setenv autoboot "
if test -e mmc ${mmcbootdev}:${mmcbootpart} Image.itb; then
echo Found kernel image: Image.itb;
run setboot_fit;
run boot_img;
elif test -e mmc ${mmcbootdev}:${mmcbootpart} zImage; then
echo Found kernel image: zImage;
run setboot_zimg;
run boot_img;
elif test -e mmc ${mmcbootdev}:${mmcbootpart} uImage; then
echo Found kernel image: uImage;
run setboot_uimg;
run boot_img;
fi;"
#### Execute the defined autoboot macro
run autoboot
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