[PATCH 0/5] qemu-arm64: Allow booting via Trusted Firmware

[Ard Biesheuvel]

On Thu, 24 Sep 2020 at 09:58, Amit Tomar <atomar25opensource at gmail.com> wrote:
>
> Hi,
>
> Andre Przywara (5):
>>
>>   arm64: PIE: Skip fixups if distance is zero
>>   arm64: PIE: Allow fixed stack pointer
>>   qemu-arm: Remove need to specify flash banks
>>   qemu: Drop ARCH_SUPPORT_TFABOOT
>>   qemu/arm64: Enable POSITION_INDEPENDENT
>>
>>  arch/arm/Kconfig             | 4 ++--
>>  arch/arm/cpu/armv8/start.S   | 3 ++-
>>  configs/qemu_arm64_defconfig | 1 +
>>  include/configs/qemu-arm.h   | 8 +-------
>>  4 files changed, 6 insertions(+), 10 deletions(-)
>>
>> --
>> 2.17.5
>>
>
> I tried testing this series but don't see any output while loading U-Boot from ROM:
>
> # ./qemu-system-aarch64 -M virt -cpu cortex-a57 -nographic -smp 1 -bios u-boot.bin
>
> strangely enough SP is having a value of 0 after execution:
>
> (qemu) info registers
>  PC=0000000000001a00 X00=540000a0f100303f X01=000000000007c000
> X02=0000000000000000 X03=00000000401fe000 X04=0000000000000000
> X05=0000000000000000 X06=0000000000000030 X07=00000000401fe008
> X08=0000000000000000 X09=14000008d51e115f X10=0000000000000000
> X11=0000000000000000 X12=0000000000000000 X13=0000000000000000
> X14=0000000000000000 X15=0000000000000000 X16=0000000000000000
> X17=0000000000000000 X18=0000000000000000 X19=0000000000000000
> X20=0000000000000000 X21=0000000000000000 X22=0000000000000000
> X23=0000000000000000 X24=0000000000000000 X25=0000000000000000
> X26=0000000000000000 X27=0000000000000000 X28=0000000000000000
> X29=00000000000000c8 X30=14000008d51e39cb  SP=0000000000000000
> PSTATE=000003c5 ---- EL1h     FPCR=00000000 FPSR=00000000
>
> Wondering , if I have missed something ?
>

Did you regenerate the .config? Otherwise, CONFIG_INIT_SP_RELATIVE may
still be enabled.