I finally resolved this issue after hunting around. The clue comes from this page, https://wiki.linaro.org/LEG/Engineering/Virtualization/Xen_ARM_Guide:
/chosen/module@1/reg should match bootwrapper model.lds. > Basically if I increase memory region for kernel, I should also update dts file on /chosen/module@1/reg. Here is what in model.xen.lds. As you can see, kernel area is increased to 14MB. OUTPUT_FORMAT("elf64-littleaarch64") OUTPUT_ARCH(aarch64) TARGET(binary) INPUT(./boot.xen.o) INPUT(Xen) INPUT(Image) INPUT(./fdt.dtb) SECTIONS { . = 0x80000000; .text : { boot.xen.o } . = 0x80000000 + 0xfff8; mbox = .; .mbox : { QUAD(0x0) } . = 0x80000000 + 0xE00000; xen = .; .xen : { Xen } . = 0x80000000 + 0x80000; kernel = .; .kernel : { Image } . = 0x80000000 + 0x08000000; dtb = .; .dtb : { ./fdt.dtb } .data : { *(.data) } .bss : { *(.bss) } } And here is what in foundation-v8.dts for chosen: chosen { #address-cells = <0x1>; #size-cells = <0x1>; xen,xen-bootargs = "dom0_mem=512M dom0_max_vcpus=2 dtuart=serial0 conswitch=x loglvl=all guest_loglvl=all no-bootscrub"; module@1 { compatible = "xen,linux-zimage", "xen,multiboot-module"; reg = <0x80080000 0xe00000>; bootargs = "earlyprintk=pl011,0x1c090000 console=hvc0 root=/dev/vda2 debug rw"; }; }; Kernels can be any recent 4.x kernel from torvalds, stable or linaro trees. Now move to on to boot kernel with initrd. Jun On Fri, Sep 16, 2016 at 2:44 PM, Jun Sun <j...@junsun.net> wrote: > > Hi, all, > > I have been following the instructions at https://wiki.linaro.org/ > LEG/Engineering/Virtualization/Xen_on_ARMv8_Foundation to build xen for > arm64. > > When I tried to use the latest kernel instead of v3.13 as suggested, I > failed when building boot-wrapped image. See below. > > ======================= > jsun@ubuntu:~/work/xen/linaro-2014-guide/boot-wrapper-aarch64$ make > CROSS_COMPILE=aarch64-linux-gnu- FDT_SRC=foundation-v8.dts xen-system.axf > aarch64-linux-gnu-ld -o xen-system.axf --script=model.xen.lds > aarch64-linux-gnu-ld: section .xen loaded at > [0000000080a00000,0000000080ac061f] > overlaps section .kernel loaded at [0000000080080000,0000000080c50dff] > Makefile:78: recipe for target 'xen-system.axf' failed > make: *** [xen-system.axf] Error 1 > ======================= > > Obviously the issue is that linker script gives about 8.5MB space for > kernel which is too small. If I modify the linker script to give more space > to kernel, the xen will halt during boot up right before Dom0 starts: > > ========================== > (XEN) *** LOADING DOMAIN 0 *** > (XEN) Loading kernel from boot module @ 0000000080080000 > (XEN) Allocating 1:1 mappings totalling 512MB for dom0: > (XEN) BANK[0] 0x000000a0000000-0x000000c0000000 (512MB) > (XEN) Grant table range: 0x000000ffe00000-0x000000ffe5e000 > (XEN) Loading zImage from 0000000080080000 to 00000000a0080000- > 00000000a0880000 > (XEN) Allocating PPI 16 for event channel interrupt > (XEN) Loading dom0 DTB to 0x00000000a8000000-0x00000000a8000fe7 > (XEN) Std. Loglevel: All > (XEN) Guest Loglevel: All > (XEN) *** Serial input -> DOM0 (type 'CTRL-x' three times to switch input > to Xen) > (XEN) Freed 276kB init memory. > ========================== > > Any pointers on the right way to get modern kernel working with xen on > ARM64? > > Thanks. > > Jun >
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