Re: /usr/shared/qemu binaries

[Alistair Francis]

On Mon, Jan 10, 2022 at 8:16 PM Liviu Ionescu <ilg@livius.net> wrote:
>
> I successfully built two QEMU 6.2 binary packages, one with Arm and one with 
> RISC-V, each with standalone variants for Linux Intel, Linux Arm, Windows 
> Intel, macOS Intel and macOS Arm.
>
> Each package includes only the relevant executables (qemu-system-arm/aarch64 
> and respectively qemu-system-riscv32/riscv64).
>
> However I noticed that the `make install` also creates a `.../shared/qemu` 
> folder with more than 200 MB of binaries.
>
>
> Given that my binary packages are intended to be installed as dependencies 
> during tests, I think it would be a waste of bandwidth to include all those 
> binaries in all distributions.
>
>
> However I don't know if any of those binaries are internally referred by 
> various configuration options, and I'm concerned that simply removing the 
> binaries will result in failures to start the emulation. For bare-metal 
> emulation I expect none, but for Linux emulation there might be some 
> (unfortunately my experience with emulating Linux is poor, and I cannot tell).
>
>
> If there are such cases, could you suggest which binaries are mandatory for 
> inclusion in the QEMU Arm package and which in the QEMU RISC-V package, if 
> any?
>
> Also, is there a configuration option to disable the inclusion of those 
> binaries?
>
>
> Thank you,
>
> Liviu
>
>
> ------------------------------------------------------------------
>
> p.s. For completeness, I added the list of files generated by my build of 
> qemu-system-arm/aarch64 6.2.0:
>
>
> ilg@wks qemu-arm % du -s -m share/qemu
> 221     share/qemu
>
> ilg@wks qemu-arm % ls -l share/qemu
> total 448560
> -rw-r--r--   1 ilg  staff       850 Jan  7 14:50 QEMU,cgthree.bin
> -rw-r--r--   1 ilg  staff      1402 Jan  7 14:50 QEMU,tcx.bin
> -rw-r--r--   1 ilg  staff      3211 Jan  7 14:50 bamboo.dtb
> -rw-r--r--   1 ilg  staff    262144 Jan  7 14:50 bios-256k.bin
> -rw-r--r--   1 ilg  staff    131072 Jan  7 14:50 bios-microvm.bin
> -rw-r--r--   1 ilg  staff    131072 Jan  7 14:50 bios.bin
> -rw-r--r--   1 ilg  staff      9779 Jan  7 14:50 canyonlands.dtb
> -rw-r--r--   1 ilg  staff  67108864 Jan  7 14:52 edk2-aarch64-code.fd
> -rw-r--r--   1 ilg  staff  67108864 Jan  7 14:52 edk2-arm-code.fd
> -rw-r--r--   1 ilg  staff  67108864 Jan  7 14:52 edk2-arm-vars.fd
> -rw-r--r--   1 ilg  staff   3653632 Jan  7 14:52 edk2-i386-code.fd
> -rw-r--r--   1 ilg  staff   3653632 Jan  7 14:52 edk2-i386-secure-code.fd
> -rw-r--r--   1 ilg  staff    540672 Jan  7 14:52 edk2-i386-vars.fd
> -rw-r--r--   1 ilg  staff     42903 Jan  7 14:50 edk2-licenses.txt
> -rw-r--r--   1 ilg  staff   3653632 Jan  7 14:52 edk2-x86_64-code.fd
> -rw-r--r--   1 ilg  staff   3653632 Jan  7 14:52 edk2-x86_64-secure-code.fd
> -rw-r--r--   1 ilg  staff    159232 Jan  7 14:50 efi-e1000.rom
> -rw-r--r--   1 ilg  staff    159232 Jan  7 14:50 efi-e1000e.rom
> -rw-r--r--   1 ilg  staff    159232 Jan  7 14:50 efi-eepro100.rom
> -rw-r--r--   1 ilg  staff    157696 Jan  7 14:50 efi-ne2k_pci.rom
> -rw-r--r--   1 ilg  staff    157696 Jan  7 14:50 efi-pcnet.rom
> -rw-r--r--   1 ilg  staff    160768 Jan  7 14:50 efi-rtl8139.rom
> -rw-r--r--   1 ilg  staff    160768 Jan  7 14:50 efi-virtio.rom
> -rw-r--r--   1 ilg  staff    156672 Jan  7 14:50 efi-vmxnet3.rom
> drwxr-xr-x   8 ilg  staff       256 Jan  7 14:53 firmware
> -rw-r--r--   1 ilg  staff    757144 Jan  7 14:50 hppa-firmware.img
> drwxr-xr-x  36 ilg  staff      1152 Jan  7 14:53 keymaps
> -rw-r--r--   1 ilg  staff      9216 Jan  7 14:50 kvmvapic.bin
> -rw-r--r--   1 ilg  staff      1024 Jan  7 14:50 linuxboot.bin
> -rw-r--r--   1 ilg  staff      1536 Jan  7 14:50 linuxboot_dma.bin
> -rw-r--r--   1 ilg  staff      1024 Jan  7 14:50 multiboot.bin
> -rw-r--r--   1 ilg  staff      1024 Jan  7 14:50 multiboot_dma.bin
> -rw-r--r--   1 ilg  staff       768 Jan  7 14:50 npcm7xx_bootrom.bin
> -rw-r--r--   1 ilg  staff    696912 Jan  7 14:50 openbios-ppc
> -rw-r--r--   1 ilg  staff    382048 Jan  7 14:50 openbios-sparc32
> -rw-r--r--   1 ilg  staff   1593408 Jan  7 14:50 openbios-sparc64

Most of these seem to be for other architectures besides ARM/RISC-V.
My guess would be keep *arm*/*aarch64*, keymaps, npcm7xx_bootrom.bin,
efi-* and linuxboot*/multiboot*. That should ensure that everything
works for you, but I'm just guessing here.

> -rw-r--r--   1 ilg  staff     78680 Jan  7 14:50 
> opensbi-riscv32-generic-fw_dynamic.bin
> -rw-r--r--   1 ilg  staff    727464 Jan  7 14:50 
> opensbi-riscv32-generic-fw_dynamic.elf
> -rw-r--r--   1 ilg  staff     75096 Jan  7 14:50 
> opensbi-riscv64-generic-fw_dynamic.bin
> -rw-r--r--   1 ilg  staff    781264 Jan  7 14:50 
> opensbi-riscv64-generic-fw_dynamic.elf

If you want to boot Linux on RISC-V QEMU you will need OpenSBI. You
can either use these or build and supply your own binaries.

> -rw-r--r--   1 ilg  staff    153728 Jan  7 14:50 palcode-clipper
> -rw-r--r--   1 ilg  staff      9882 Jan  7 14:50 petalogix-ml605.dtb
> -rw-r--r--   1 ilg  staff      8161 Jan  7 14:50 petalogix-s3adsp1800.dtb
> -rw-r--r--   1 ilg  staff      1536 Jan  7 14:50 pvh.bin
> -rw-r--r--   1 ilg  staff     67072 Jan  7 14:50 pxe-e1000.rom
> -rw-r--r--   1 ilg  staff     61440 Jan  7 14:50 pxe-eepro100.rom
> -rw-r--r--   1 ilg  staff     61440 Jan  7 14:50 pxe-ne2k_pci.rom
> -rw-r--r--   1 ilg  staff     61440 Jan  7 14:50 pxe-pcnet.rom
> -rw-r--r--   1 ilg  staff     61440 Jan  7 14:50 pxe-rtl8139.rom
> -rw-r--r--   1 ilg  staff     60416 Jan  7 14:50 pxe-virtio.rom
> -rw-r--r--   1 ilg  staff     65536 Jan  7 14:50 qboot.rom
> -rw-r--r--   1 ilg  staff    154542 Jan  7 14:50 qemu-nsis.bmp
> -rw-r--r--   1 ilg  staff     18752 Jan  7 14:50 qemu_vga.ndrv
> -rw-r--r--   1 ilg  staff     50936 Jan  7 14:50 s390-ccw.img
> -rw-r--r--   1 ilg  staff     79688 Jan  7 14:50 s390-netboot.img
> -rw-r--r--   1 ilg  staff      4096 Jan  7 14:50 sgabios.bin
> -rw-r--r--   1 ilg  staff   2528128 Jan  7 14:50 skiboot.lid
> -rw-r--r--   1 ilg  staff    991744 Jan  7 14:50 slof.bin
> -rw-r--r--   1 ilg  staff    401308 Jan  7 14:51 trace-events-all
> -rw-r--r--   1 ilg  staff    524288 Jan  7 14:50 u-boot-sam460-20100605.bin
> -rw-r--r--   1 ilg  staff    421720 Jan  7 14:50 u-boot.e500
> -rw-r--r--   1 ilg  staff     39424 Jan  7 14:50 vgabios-ati.bin
> -rw-r--r--   1 ilg  staff     28672 Jan  7 14:50 vgabios-bochs-display.bin
> -rw-r--r--   1 ilg  staff     39424 Jan  7 14:50 vgabios-cirrus.bin
> -rw-r--r--   1 ilg  staff     39424 Jan  7 14:50 vgabios-qxl.bin
> -rw-r--r--   1 ilg  staff     28672 Jan  7 14:50 vgabios-ramfb.bin
> -rw-r--r--   1 ilg  staff     39424 Jan  7 14:50 vgabios-stdvga.bin
> -rw-r--r--   1 ilg  staff     39424 Jan  7 14:50 vgabios-virtio.bin
> -rw-r--r--   1 ilg  staff     39424 Jan  7 14:50 vgabios-vmware.bin
> -rw-r--r--   1 ilg  staff     38912 Jan  7 14:50 vgabios.bin

Not sure about these, you probably don't need them though (again, just a guess)

Alistair

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