# U-Boot environment variables for A/B boot system
# Default variables for first boot - these will be modified during operation

# Active partition (A or B)
active_part=A
active_root=/dev/mmcblk0p2
inactive_part=B
inactive_root=/dev/mmcblk0p3

# Boot attempt counters
bootcount=0
bootlimit=3

# Default bootcmd
bootcmd=run bootcmd_${active_part}

# Kernel boot arguments
bootargs=console=ttyAMA0,115200 console=tty1 root=${active_root} rootwait

# Commands for booting from A or B partitions
bootcmd_A=setenv bootargs console=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootwait; load mmc 0:1 ${kernel_addr_r} zImage; load mmc 0:1 ${fdt_addr_r} bcm2710-rpi-3-b.dtb; bootz ${kernel_addr_r} - ${fdt_addr_r}
bootcmd_B=setenv bootargs console=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p3 rootwait; load mmc 0:1 ${kernel_addr_r} zImage; load mmc 0:1 ${fdt_addr_r} bcm2710-rpi-3-b.dtb; bootz ${kernel_addr_r} - ${fdt_addr_r}

# Fallback logic for failed boots
altbootcmd=if test ${active_part} = A; then setenv active_part B; setenv active_root /dev/mmcblk0p3; setenv inactive_part A; setenv inactive_root /dev/mmcblk0p2; else setenv active_part A; setenv active_root /dev/mmcblk0p2; setenv inactive_part B; setenv inactive_root /dev/mmcblk0p3; fi; setenv bootcount 0; saveenv; run bootcmd

# Memory addresses
kernel_addr_r=0x01000000
fdt_addr_r=0x02000000

# Board name
board_name=rpi3

# Network configuration (DHCP)
autoload=no
ethact=smi
ethaddr_sdio0=00:44:55:66:77:88