# Boot script for a BeaglePlay running MuntsOS Embedded Linux

# Copyright (C)2025, Philip Munts dba Munts Technologies.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
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# Load kernel et al from micro-SD card

mmc dev 1

# Allocate some memory buffers

setexpr INBUF  $loadaddr + 0x000000
setexpr DTB    $loadaddr + 0x100000
setexpr KERNEL $loadaddr + 0x200000

# Import some target settings from config.txt

load mmc 1:1 $INBUF config.txt
env import -t -r $INBUF ${filesize}

# Load device tree

load mmc 1:1 $DTB $boardname.dtb
fdt addr $DTB
fdt resize 65536

# Load device tree overlays

for OVL in ${OVERLAYS} ; do
  load mmc 1:1 $INBUF overlays/${OVL}.dtbo
  fdt apply $INBUF
done

# Load kernel files

load mmc 1:1 $KERNEL $boardname.img

# Boot the Linux kernel

setenv bootargs $CMDLINE BOARDNAME=$boardname BOOTPART=mmcblk1p1
booti $KERNEL - $DTB