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

[André Przywara]

On 24/09/2020 08:57, Amit Tomar 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

I can't reproduce this (read: works for me).
I tried with cross-gcc 9.2 & QEMU 5.0.0, and with Ubuntu-arm64 (GCC 7.5
& QEMU 2.11.1).
Did you apply against master, used qemu_arm64_defconfig, cleaned the
build directory? Is your (self-built?) QEMU working? Are you using the
actual generated binary?

I pushed the branch to
https://github.com/Andre-ARM/u-boot/commits/qemu-tfa, please try this.

Cheers,
Andre

> 
> 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 ?
> 
> Thanks
> -Amit