mirror of
https://github.com/linux-sunxi/meta-sunxi.git
synced 2024-11-16 18:28:23 +01:00
65 lines
1.8 KiB
Batchfile
65 lines
1.8 KiB
Batchfile
# boot.cmd with overlay support
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# edit sunxienv.txt to add overlays
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setenv load_addr "0x45000000"
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# Default env variables
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setenv ov_error "n"
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setenv rootdev "mmcblk${devnum}p2"
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setenv earlycon "n"
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setenv overlays
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echo "meta-sunxi boot devtype=${devtype} devnum=${devnum}"
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# Print boot source
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itest.b *0x28 == 0x00 && echo "U-boot loaded from SD"
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itest.b *0x28 == 0x01 && echo "U-boot loaded from NAND"
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itest.b *0x28 == 0x02 && echo "U-boot loaded from eMMC or secondary SD"
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itest.b *0x28 == 0x03 && echo "U-boot loaded from SPI"
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# Load sunxienv.txt
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if test -e ${devtype} ${devnum} sunxienv.txt; then
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load ${devtype} ${devnum} ${load_addr} sunxienv.txt
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env import -t ${load_addr} ${filesize}
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echo "sunxienv.txt loaded"
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fi
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if itest.b *0x28 == 0x02 ; then
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# U-Boot loaded from eMMC or secondary SD so use it for rootfs too
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echo "U-boot loaded from eMMC or secondary SD"
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rootdev=mmcblk1p2
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fi
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# bootargs
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if test "${earlycon}" = "y"; then setenv extra "earlycon ${extra}"; fi
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setenv bootargs console=${console} console=tty1 root=/dev/${rootdev} rootwait panic=10 ${extra}
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# Load kernel
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load ${devtype} ${devnum} ${kernel_addr_r} Image
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# load fdt
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load ${devtype} ${devnum} ${fdt_addr_r} ${fdtfile}
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# apply overlays
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if test -n "${overlays}"; then
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fdt addr ${fdt_addr_r}
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fdt resize 65536
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for ov in ${overlays}; do
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if load ${devtype} ${devnum} ${load_addr} /dtbo/${ov}.dtbo; then
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echo "Applying DT overlay ${ov}.dtbo"
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fdt apply ${load_addr} || setenv ov_error "y"
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else
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setenv ov_error "y"
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fi
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done
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# Restore orginal fdt if overaly failed
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if test "${ov_error}" = "y"; then
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echo "Error in DT overaly resoring main DT"
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load ${devtype} ${devnum} ${fdt_addr_r} ${fdtfile}
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fi
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fi
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# Finally boot withou intramfs
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booti ${kernel_addr_r} - ${fdt_addr_r}
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