+Peter Robinson +Matthias Brugger
Hi Jack,
On Sun, 15 Dec 2024 at 21:36, Jack Andrews effbiae@gmail.com wrote:
thanks for u-boot.
does u-boot run in qemu when emulating a raspberry pi 3 (or 4)?
i'm running $ qemu-system-arm64 -M raspi3b -kernel u-boot
and i just get a blank screen
i built u-boot with export ARCH=arm64 export CROSS_COMPILE=/usr/bin/aarch64-linux-gnu- export CC=gcc make rpi_3_defconfig make
i also tried variations on qemu like: $ qemu-system-arm64 -smp 4,cores=1 -serial null -serial stdio -M raspi3b -kernel u-boot $ qemu-system-arm64 -smp 4,cores=1 -serial null -serial stdio -M raspi3ap -kernel u-boot
Here you are telling QEMU that the kernel is U-Boot, but U-Boot is firmware, not LInux. Also, 'u-boot' is an ELF file. At least in the instructions today[2] we use the flat binary produced from that ELF:
qemu-system-arm64 -M raspi3b -kernel u-boot.bin
But that doesn't work either. So I'm not sure how to make it work. If you do figure it out, a documentation patch for U-Boot
Regards, Simon
best, jack
[1] https://www.qemu.org/docs/master/system/arm/raspi.html [2] https://docs.u-boot.org/en/latest/board/emulation/qemu-arm.html#running-u-bo...