# 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: boardname, 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 $boardname is set and boot proper config of ITB image
|
setenv setboot_fit "
|
if test -e '${boardname}'; then
|
setenv fdt_addr ;
|
setenv initrd_addr ;
|
setenv kerneladdr 0x42000000;
|
setenv kernelname Image.itb;
|
setenv itbcfg "\"#${boardname}\"";
|
setenv imgbootcmd bootm;
|
else
|
echo Warning! Variable: \$boardname is undefined!;
|
fi"
|
|
#### Routine: setboot_uimg - prepare env to boot uImage
|
setenv setboot_uimg "
|
setenv kerneladdr 0x40007FC0;
|
setenv kernelname uImage;
|
setenv itbcfg ;
|
setenv imgbootcmd bootm;
|
run check_dtb;
|
run check_ramdisk;"
|
|
#### Routine: setboot_zimg - prepare env to boot zImage
|
setenv setboot_zimg "
|
setenv kerneladdr 0x40007FC0;
|
setenv kernelname zImage;
|
setenv itbcfg ;
|
setenv imgbootcmd bootz;
|
run check_dtb;
|
run check_ramdisk;"
|
|
#### Routine: boot_img - boot the kernel after env setup
|
setenv boot_img "
|
run loadkernel;
|
run kernel_args;
|
'${imgbootcmd}' '${kerneladdr}${itbcfg}' '${initrd_addr}' '${fdt_addr}';"
|
|
#### Routine: autoboot - choose proper boot path
|
setenv autoboot "
|
if test -e mmc 0:${mmcbootpart} Image.itb; then
|
echo Found kernel image: Image.itb;
|
run setboot_fit;
|
run boot_img;
|
elif test -e mmc 0:${mmcbootpart} zImage; then
|
echo Found kernel image: zImage;
|
run setboot_zimg;
|
run boot_img;
|
elif test -e mmc 0:${mmcbootpart} uImage; then
|
echo Found kernel image: uImage;
|
run setboot_uimg;
|
run boot_img;
|
fi;"
|
|
#### Execute the defined autoboot macro
|
run autoboot
|
