mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-19 11:18:28 +00:00
93 lines
2.9 KiB
Batchfile
93 lines
2.9 KiB
Batchfile
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# This is an example file to generate boot.scr - a boot script for U-Boot
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# Generate boot.scr:
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# ./tools/mkimage -c none -A arm -T script -d autoboot.cmd boot.scr
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#
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# It requires a list of environment variables to be defined before load:
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# platform dependent: boardname, fdtfile, console
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# system dependent: mmcbootdev, mmcbootpart, mmcrootdev, mmcrootpart, rootfstype
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#
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setenv fdtaddr "40800000"
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setenv initrdname "uInitrd"
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setenv initrdaddr "42000000"
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setenv loaddtb "load mmc ${mmcbootdev}:${mmcbootpart} ${fdtaddr} ${fdtfile}"
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setenv loadinitrd "load mmc ${mmcbootdev}:${mmcbootpart} ${initrdaddr} ${initrdname}"
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setenv loadkernel "load mmc ${mmcbootdev}:${mmcbootpart} '${kerneladdr}' '${kernelname}'"
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setenv kernel_args "setenv bootargs ${console} root=/dev/mmcblk${mmcrootdev}p${mmcrootpart} rootfstype=${rootfstype} rootwait ${opts}"
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#### Routine: check_dtb - check that target.dtb exists on boot partition
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setenv check_dtb "
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if test -e mmc '${mmcbootdev}':'${mmcbootpart}' '${fdtfile}'; then
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run loaddtb;
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setenv fdt_addr ${fdtaddr};
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else
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echo Warning! Booting without DTB: '${fdtfile}'!;
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setenv fdt_addr;
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fi;"
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#### Routine: check_ramdisk - check that uInitrd exists on boot partition
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setenv check_ramdisk "
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if test -e mmc '${mmcbootdev}':'${mmcbootpart}' '${initrdname}'; then
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echo "Found ramdisk image.";
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run loadinitrd;
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setenv initrd_addr ${initrdaddr};
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else
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echo Warning! Booting without RAMDISK: '${initrdname}'!;
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setenv initrd_addr -;
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fi;"
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#### Routine: boot_fit - check that env $boardname is set and boot proper config of ITB image
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setenv setboot_fit "
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if test -e '${boardname}'; then
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setenv fdt_addr ;
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setenv initrd_addr ;
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setenv kerneladdr 0x42000000;
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setenv kernelname Image.itb;
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setenv itbcfg \#'${boardname}';
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setenv imgbootcmd bootm;
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else
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echo Warning! Variable: \$boardname is undefined!;
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fi"
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#### Routine: setboot_uimg - prepare env to boot uImage
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setenv setboot_uimg "
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setenv kerneladdr 0x40007FC0;
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setenv kernelname uImage;
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setenv itbcfg ;
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setenv imgbootcmd bootm;
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run check_dtb;
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run check_ramdisk;"
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#### Routine: setboot_zimg - prepare env to boot zImage
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setenv setboot_zimg "
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setenv kerneladdr 0x40007FC0;
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setenv kernelname zImage;
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setenv itbcfg ;
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setenv imgbootcmd bootz;
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run check_dtb;
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run check_ramdisk;"
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#### Routine: boot_img - boot the kernel after env setup
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setenv boot_img "
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run loadkernel;
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run kernel_args;
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'${imgbootcmd}' '${kerneladdr}${itbcfg}' '${initrd_addr}' '${fdt_addr}';"
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#### Routine: autoboot - choose proper boot path
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setenv autoboot "
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if test -e mmc 0:${mmcbootpart} Image.itb; then
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echo Found kernel image: Image.itb;
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run setboot_fit;
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run boot_img;
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elif test -e mmc 0:${mmcbootpart} zImage; then
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echo Found kernel image: zImage;
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run setboot_zimg;
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run boot_img;
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elif test -e mmc 0:${mmcbootpart} uImage; then
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echo Found kernel image: uImage;
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run setboot_uimg;
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run boot_img;
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fi;"
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#### Execute the defined autoboot macro
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run autoboot
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