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This was the only configuration that I got working. > >>> +CONFIG_SERIAL_UARTLITE=y >>> +CONFIG_SERIAL_UARTLITE_CONSOLE=y >> >> I think it is just pure luck that this worked for you because you didn't >> rewrite the most important parts of config. >> >> You should define at least these values >> >> CONFIG_KERNEL_BASE_ADDR=0x90000000 >> CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR=1 >> CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR=1 >> CONFIG_XILINX_MICROBLAZE0_USE_BARREL=1 >> CONFIG_XILINX_MICROBLAZE0_USE_DIV=0 >> CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL=1 >> CONFIG_XILINX_MICROBLAZE0_USE_FPU=0 >> >> to be aligned with s3adsp1800 > > Will do. > >> It will solve these two issues too. >> ERROR: Microblaze BARREL, MSR, PCMP or DIV-different for kernel and DTS >> ERROR: Microblaze HW_MUL-different for kernel and DTS >> >>> +CONFIG_MB_POWER_OFF_THROUGH_UNALIGNED_PC=y >>> +''', >>> + qemu_arch='microblaze', >>> + kernel_path='arch/microblaze/boot/linux.bin', >>> + kernel_command_line='kunit_shutdown=poweroff', >>> + extra_qemu_params=[ >>> + '-M', 'petalogix-s3adsp1800', >>> + ], >>> +) >>> >> >> That's bring us to different topic. When qemu runs I see these 2 issues >> >> qemu-system-microblaze: -accel kvm: invalid accelerator kvm >> qemu-system-microblaze: -accel hvf: invalid accelerator hvf > > That is an artifact on how KUnit starts qemu. It should not matter. > >> I don't have any issue if you want to wire big-endian version but would be >> more useful to wire little endian version. > > Understood. Let's try to have both. > >> If there is an issue with memmove implementation I can't see any issue to >> disable that options to let it pass from the beginning and solve it >> separately. > > Ack. Could you take care of this? I have next to no idea about microblaze. On little endian this is passing. I can add it to my todo list but big endian is very very old and likely none is using it anymore. > >> This should be fragment for Little endian. > > Thanks, unfortunately this hangs for me with my distros QEMU 11.1.0. > No output, 100% CPU usage during boot. I am using qemu-system-microblaze > instead of qemu-system-microblazel, as the latter is not available > anymore, but the former is documented to also handle little endian > automatically. > I built the latest qemu like this ../qemu/configure --target-list=microblaze-softmmu,microblaze-linux-user,microblazeel-linux-user --enable-gcrypt --disable-docs /mnt/projects/xilinx-new-git/qemu.org/build-microblaze/qemu-system-microblaze --version QEMU emulator version 11.1.50 (v11.1.0-779-gd2e570cc0f97) And can't see any issue. Thanks, Michal /mnt/projects/xilinx-new-git/qemu.org/build-microblaze/qemu-system-microblaze -nodefaults -m 1024 -kernel .kunit/arch/microblaze/boot/linux.bin -append 'kunit.enable=1 kunit_shutdown=poweroff' -no-reboot -nographic -accel kvm -accel hvf -accel tcg -serial stdio -M petalogix-ml605 qemu-system-microblaze: -accel kvm: invalid accelerator kvm qemu-system-microblaze: -accel hvf: invalid accelerator hvf qemu-system-microblaze: falling back to tcg qemu-system-microblaze: warning: nic xlnx.axi-ethernet.0 has no peer random: crng init done Ramdisk addr 0x00000000, FDT at 0x5058e528 Linux version 7.3.0-rc1-00023-g5a713478d535 (monstr@monstr-desktop3) (microblazeel-amd-linux-gcc.real (GCC) 13.4.0, GNU ld (GNU Binutils) 2.42.0.20240723) #11 Tue Sep 1 15:18:11 CEST 2026 setup_memory: min_low_pfn: 0x50000 setup_memory: max_low_pfn: 0x60000 setup_memory: max_pfn: 0x60000 OF: reserved mem: Reserved memory: No reserved-memory node in the DT setup_cpuinfo: initialising setup_cpuinfo: No PVR support. Using static CPU info from FDT wb_msr WB won't work properly Zone ranges: DMA [mem 0x0000000050000000-0x000000005fffffff] Normal empty Movable zone start for each node Early memory node ranges node 0: [mem 0x0000000050000000-0x000000005fffffff] Initmem setup node 0 [mem 0x0000000050000000-0x000000005fffffff] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768 pcpu-alloc: [0] 0 Kernel command line: kunit.enable=1 kunit_shutdown=poweroff printk: log buffer data + meta data: 131072 + 409600 = 540672 bytes Dentry cache hash table entries: 32768 (order: 5, 131072 bytes, linear) Inode-cache hash table entries: 16384 (order: 4, 65536 bytes, linear) Built 1 zonelists, mobility grouping on. Total pages: 65536 mem auto-init: stack:all(zero), heap alloc:off, heap free:off SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0 irq-xilinx: /axi/interrupt-controller@81800000: num_irq=6, edge=0x4 clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns ERROR: CPU CCF input clock not found /axi/system-timer@83c00000: irq=2 ERROR: timer CCF input clock not found clocksource: xilinx_clocksource: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604467 ns xilinx_timer_shutdown xilinx_timer_set_periodic sched_clock: 32 bits at 100MHz, resolution 10ns, wraps every 21474836475ns Console: colour dummy device 80x25 printk: legacy console [tty0] enabled Calibrating delay loop... 1945.60 BogoMIPS (lpj=3891200) pid_max: default: 32768 minimum: 301 Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear) Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear) VFS: Finished mounting rootfs on nullfs Memory: 253204K/262144K available (4023K kernel code, 596K rwdata, 832K rodata, 161K init, 192K bss, 8436K reserved, 0K cma-reserved) posixtimers hash table entries: 512 (order: 0, 2048 bytes, linear) futex hash table entries: 256 (3072 bytes on 1 NUMA nodes, total 3 KiB, linear). DMA: preallocated 128 KiB GFP_KERNEL|GFP_DMA pool for atomic allocations clocksource: Switched to clocksource xilinx_clocksource workingset: timestamp_bits=30 (anon: 25) max_order=16 bucket_order=0 (anon: 0) io scheduler mq-deadline registered io scheduler kyber registered Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled 83e00000.serial: ttyS0 MMIO:0x83e01000 (irq = 5, base_baud = 6250000) is a 16550A printk: console [ttyS0] enabled clk: Disabling unused clocks KTAP version 1 1..118 KTAP version 1 # Subtest: example_init # module: kunit_example_test # is_init: true 1..1 ok 1 example_init_test ok 1 example_init # miscdev_init: found misc device minor 15 available # miscdev_init: found misc device minor 128 available # miscdev_init: found misc device minor 0 available # miscdev_init: found misc device minor 254 available KTAP version 1 # Subtest: miscdev_init # module: misc_minor_kunit # is_init: true 1..7 KTAP version 1 # Subtest: miscdev_test_static_basic ok 1 lower static range, top