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550a408083
Add a new xen-rpi-u-boot-scr recipe to PROVIDE u-boot-default-script instead of using a bbappend to rpi-u-boot-scr. This allows the new recipe to be selected by indicating it as PREFERRED_PROVIDER of u-boot-default-script, and then do that in the Xen on Raspberry Pi 4 config file, xen-raspberrypi4-64.inc. Signed-off-by: Christopher Clark <christopher.w.clark@gmail.com> Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
56 lines
1.7 KiB
Plaintext
56 lines
1.7 KiB
Plaintext
# Set the fdt address to what came from the GPU, so we can edit it
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fdt addr ${fdt_addr}
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# Pull the bootargs that the GPU has edited
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fdt get value bootargs /chosen bootargs
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# Set module load addresses
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setenv xen_loadaddr "0x00200000"
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setenv kernel_loadaddr "0x00400000"
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# Add some space to the fdt so we can edit it
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fdt resize 0x1000
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echo Add boot arguments for Xen
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fdt set /chosen xen,xen-bootargs "console=dtuart dtuart=/soc/serial@7e215040 dom0_mem='@@RPI_DOM0_MEM@@' @@RPI_DEBUG_XEN_ARGS@@"
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echo Add boot arguments for dom0
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setenv dom0_bootargs "console=hvc0 earlycon=xenboot debug root=/dev/mmcblk0p2 rootwait"
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fdt set /chosen xen,dom0-bootargs \"${dom0_bootargs}\"
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echo Add a dom0 node to chosen to put Linux boot information in
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fdt mknode /chosen dom0
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echo Set this for the Linux boot command
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fdt set /chosen/dom0 compatible "multiboot,module"
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# Tell Xen where PCI is
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fdt set /scb/pcie@7d500000 device_type "pci"
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# Workaround to fix:
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# "Unable to retrieve address 0 for /scb/pcie@7d500000/pci@1,0/usb@1,0"
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fdt rm /scb/pcie@7d500000/pci@1,0/usb@1,0
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echo Delay to allow the MMC card to be ready
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sleep 1
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echo Load Xen into memory
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fatload mmc 1:1 ${xen_loadaddr} xen
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echo Xen loaded, size: 0x$filesize
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echo Load Linux kernel into memory
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fatload mmc 1:1 ${kernel_loadaddr} Image
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setenv kernel_size 0x$filesize
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echo Linux loaded, size: 0x$filesize
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echo Set the address and size for the Linux kernel so Xen can pick it up
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fdt set /chosen/dom0 reg <${kernel_loadaddr} ${kernel_size}>
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# Define the size and address cells
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fdt set /chosen '#size-cells' <1>
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fdt set /chosen '#address-cells' <1>
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# Display the chosen fdt section - can be important for debugging
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fdt print /chosen
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echo Boot Xen
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booti ${xen_loadaddr} - ${fdt_addr}
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