# Set the fdt address to what came from the GPU, so we can edit it
fdt addr ${fdt_addr}

# Pull the bootargs that the GPU has edited
fdt get value bootargs /chosen bootargs

# Set module load addresses
setenv xen_loadaddr     "0x00200000"
setenv kernel_loadaddr  "0x00400000"

# Add some space to the fdt so we can edit it
fdt resize 0x1000
echo Add boot arguments for Xen
fdt set /chosen xen,xen-bootargs "console=dtuart dtuart=/soc/serial@7e215040 dom0_mem='@@RPI_DOM0_MEM@@' @@RPI_DEBUG_XEN_ARGS@@"

echo Add a dom0 node to chosen to put Linux boot information in
fdt mknode /chosen dom0

echo Set this for the Linux boot command
fdt set /chosen/dom0 compatible "multiboot,module"

# Tell Xen where PCI is
fdt set /scb/pcie@7d500000 device_type "pci"
# Workaround to fix:
# "Unable to retrieve address 0 for /scb/pcie@7d500000/pci@1,0/usb@1,0"
fdt rm /scb/pcie@7d500000/pci@1,0/usb@1,0

echo Delay to allow the MMC card to be ready
sleep 1

# Retrieve PARTUUID for the rootfs partition of the sdcard
part uuid mmc 1:2 rootfs_partuuid

echo Add boot arguments for dom0
setenv dom0_bootargs "console=hvc0 earlycon=xenboot debug root=PARTUUID=${rootfs_partuuid} rootwait"
fdt set /chosen xen,dom0-bootargs \"${dom0_bootargs}\"

echo Load Xen into memory
fatload mmc 1:1 ${xen_loadaddr} xen
echo Xen loaded, size: 0x$filesize

echo Load Linux kernel into memory
fatload mmc 1:1 ${kernel_loadaddr} Image
setenv kernel_size 0x$filesize
echo Linux loaded, size: 0x$filesize

echo Set the address and size for the Linux kernel so Xen can pick it up
fdt set /chosen/dom0 reg <${kernel_loadaddr} ${kernel_size}>

# Define the size and address cells
fdt set /chosen '#size-cells' <1>
fdt set /chosen '#address-cells' <1>

# Display the chosen fdt section - can be important for debugging
fdt print /chosen

echo Boot Xen
booti ${xen_loadaddr} - ${fdt_addr}
