On Wed, Jul 3, 2024 at 12:25 AM Philippe Mathieu-Daudé <phi...@linaro.org> wrote: > > Hi Zhiwei, > > On 1/7/24 05:37, LIU Zhiwei wrote: > > From: TANG Tiancheng <tangtiancheng....@alibaba-inc.com> > > > > This patch set aims to expose 32-bit RISC-V cpu to RV64 QEMU. Thus > > qemu-system-riscv64 can directly boot a RV32 Linux. > > > > This patch set has been tested with 6.9.0 Linux Image. > > > > - Run RV64 QEMU with RV32 CPU > > qemu-system-riscv64 -cpu rv32 -M virt -nographic \ > > -kernel Image \ > > -append "root=/dev/vda ro console=ttyS0" \ > > -drive file=rootfs.ext2,format=raw,id=hd0 \ > > -device virtio-blk-device,drive=hd0 -netdev user,id=net0 \ > > -device virtio-net-device,netdev=net0 > > > > OpenSBI v1.4 > > QEMU emulator version 9.0.50 (v9.0.0-1132-g7799dc2e3b) > > [ 0.000000] Linux version 6.9.0 (developer@11109ca35736) > > (riscv32-unknown-linux-gnu-gcc (gc891d8dc23e-dirty) 13.2.0, GNU ld (GNU > > Binutils) 2.42) #3 SMP Fri May 31 08:42:15 UTC 2024 > > [ 0.000000] random: crng init done > > [ 0.000000] OF: fdt: Ignoring memory range 0x80000000 - 0x80400000 > > [ 0.000000] Machine model: riscv-virtio,qemu > > [ 0.000000] SBI specification v2.0 detected > > [ 0.000000] SBI implementation ID=0x1 Version=0x10004 > > [ 0.000000] SBI TIME extension detected > > [ 0.000000] SBI IPI extension detected > > [ 0.000000] SBI RFENCE extension detected > > [ 0.000000] SBI SRST extension detected > > [ 0.000000] SBI DBCN extension detected > > [ 0.000000] efi: UEFI not found. > > [ 0.000000] OF: reserved mem: 0x80000000..0x8003ffff (256 KiB) nomap > > non-reusable mmode_resv1@80000000 > > [ 0.000000] OF: reserved mem: 0x80040000..0x8004ffff (64 KiB) nomap > > non-reusable mmode_resv0@80040000 > > [ 0.000000] Zone ranges: > > [ 0.000000] Normal [mem 0x0000000080400000-0x0000000087ffffff] > > [ 0.000000] Movable zone start for each node > > [ 0.000000] Early memory node ranges > > [ 0.000000] node 0: [mem 0x0000000080400000-0x0000000087ffffff] > > [ 0.000000] Initmem setup node 0 [mem > > 0x0000000080400000-0x0000000087ffffff] > > [ 0.000000] On node 0, zone Normal: 1024 pages in unavailable ranges > > [ 0.000000] SBI HSM extension detected > > [ 0.000000] riscv: base ISA extensions acdfhim > > [ 0.000000] riscv: ELF capabilities acdfim > > [ 0.000000] percpu: Embedded 17 pages/cpu s37728 r8192 d23712 u69632 > > [ 0.000000] Kernel command line: root=/dev/vda ro console=ttyS0 > > [ 0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 > > bytes, linear) > > [ 0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes, > > linear) > > [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 31465 > > [ 0.000000] mem auto-init: stack:all(zero), heap alloc:off, heap free:off > > [ 0.000000] Virtual kernel memory layout: > > [ 0.000000] fixmap : 0x9c800000 - 0x9d000000 (8192 kB) > > [ 0.000000] pci io : 0x9d000000 - 0x9e000000 ( 16 MB) > > [ 0.000000] vmemmap : 0x9e000000 - 0xa0000000 ( 32 MB) > > [ 0.000000] vmalloc : 0xa0000000 - 0xc0000000 ( 512 MB) > > [ 0.000000] lowmem : 0xc0000000 - 0xc7c00000 ( 124 MB) > > [ 0.000000] Memory: 95700K/126976K available (9090K kernel code, 8845K > > rwdata, 4096K rodata, 4231K init, 341K bss, 31276K reserved, 0K > > cma-reserved) > > ... > > Welcome to Buildroot > > buildroot login: root > > # cat /proc/cpuinfo > > processor : 0 > > hart : 0 > > isa : > > rv32imafdch_zicbom_zicboz_zicntr_zicsr_zifencei_zihintntl_zihintpause_zihpm_zfa_zba_zbb_zbc_zbs_sstc > > mmu : sv32 > > Please provide an Avocado test (i.e. checking /proc/cpuinfo > contains "isa : rv32"). See for reference > tests/avocado/boot_linux_console.py.
Awesome! Thanks for this, this is very exciting. I agree we should add an Avacado test, that way this will be regularly tested as it's something that seems prone to breakage. Alistair > > Thanks! >
