On 24/09/2020 09:44, Heinrich Schuchardt wrote: > On 24.09.20 09:57, 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 > > TF-A runs at EL3 so you should test with > -machine virt,secure=true,virtualization=true
This is true, but the point of this series is to work both within TF-A and without it. So it should work (and does for me!) with Amit's line above. > The bios parameter has to point to the TF-A bl1.bin binary. see TF-A's > docs/plat/qemu.rst: BL1 is used as the BootROM, supplied with the -bios > argument. Yeah, and it seems to be even more complicated, since you have to glue fip.bin within a certain offset to bl1.bin, into one file to give to -bios. I use: $ cp build/qemu/debug/bl1.bin flash.bin $ dd if=build/qemu/debug/fip.bin of=flash.bin bs=4k seek=64 ... and make sure to give QEMU more than 512MB of RAM, since the default load address for U-Boot is there. Actually fixing this annoyance was the main motivation for this series. Once people agreed that this series is making some sense, I plan to move the load address in TF-A and improve the documentation in both TF-A and QEMU on this. Thanks! Andre > > U-Boot is BL33. > > Best regards > > Heinrich > >> >> 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 >
