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Re: [PATCH v4 6/8] roms: add microvm-bios (qboot) as binary and git subm


From: Philippe Mathieu-Daudé
Subject: Re: [PATCH v4 6/8] roms: add microvm-bios (qboot) as binary and git submodule
Date: Tue, 24 Sep 2019 15:31:23 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0

On 9/24/19 2:44 PM, Sergio Lopez wrote:
> qboot is a minimalist x86 firmware for booting Linux kernels. It does
> the mininum amount of work required for the task, and it's able to
> boot both PVH images and bzImages without relying on option roms.
> 
> This characteristics make it an ideal companion for the microvm
> machine type.
> 
> Signed-off-by: Sergio Lopez <address@hidden>
> ---
>  .gitmodules              |   3 +++
>  pc-bios/bios-microvm.bin | Bin 0 -> 65536 bytes
>  roms/Makefile            |   6 ++++++
>  roms/qboot               |   1 +
>  4 files changed, 10 insertions(+)
>  create mode 100755 pc-bios/bios-microvm.bin
>  create mode 160000 roms/qboot
> 
> diff --git a/.gitmodules b/.gitmodules
> index c5c474169d..19792c9a11 100644
> --- a/.gitmodules
> +++ b/.gitmodules
> @@ -58,3 +58,6 @@
>  [submodule "roms/opensbi"]
>       path = roms/opensbi
>       url =   https://git.qemu.org/git/opensbi.git
> +[submodule "roms/qboot"]
> +     path = roms/qboot
> +     url = https://github.com/bonzini/qboot
> diff --git a/pc-bios/bios-microvm.bin b/pc-bios/bios-microvm.bin
> new file mode 100755
> index 
> 0000000000000000000000000000000000000000..45eabc516692e2d134bbb630d133c7c2dcc9a9b6
> GIT binary patch
> literal 65536
> zcmeI2eS8zwneS)hF_vth5y2#;brv;O^x_6mtAUMO%tn5}IEf)jY``G|XbMBqa_^-@
> zBBUXSyplo3+VMx9Ci}VFwz~@rx!t?By&v!0UdNb=V<BQ0NE-8!l)yH1LPAE!VDnNi
> zCSmUHnUQRVmuC0>GyaU`%sJ0_&U3!!Ij`fT?33lo8bTirhX$S6(dmK^Nu2qLAPZJO
> zd+n=&@XLYwWFdS~Zh2c2gidFUEU<VyB{hF24C^}E=jl<HQ(<+MP>-}gkOUzx)FqJ6
> z;W433mmmmAY+Noh;tibd?18@VxCH}v4GeX<kXL!tiyU!Hnn`6SuU6r$bB&SE_=SXJ
> zc+)=1$Iq|sgvbt9s)=?%V2RL(E{A7Ar52#~B&%`TJKuimt+%dx%KD*M-I%M^1gEP~

Now that using Docker is quite simple, I'd rather add a job building
this and commit the built binary, so we have reproducible builds.

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> zDL-8<+|++QLmAYzrjBZK{D<LGrvJMT-H3Y@@-^W(F7x=9Oa-FJr&dDdNJi!sZCGk~
> z{T7T+S*lAX?qTHrt4#h(KmH*)k<pQB3Tm?5L7?(9lEVrtl##zhc`nNjZ&4mP3bB|4
> zb~VU9ajdF9Tpi-F3}->kmx-I7DQCL{eAeWfovymzF*9JY+zQzy<R@O^oR*AnB7Hj`
> z6M+ncNygCkSVmt}0STiw!#*Ux1=%oUzd2F1AtPHeUbYwMBN@G$aI8XlZ{ktw2v+8-
> z$;sC3#yOz|*~sTEX}W#|x&+khCLNV<jo;qf{T4Zjvfa<nu@>2HS5DRs+s~MszfA78
> zkjwfj`3d>!F2qe9>x)&iRW`00>oga!RHyKuu0Kr@x8h=1al=Suj!BIWZ%4ilh{dh)
> zegDScy}BSr7H^ECu565%yYTd$({(!DG27i3zcF8gB${z<R|oQSs>2%O{UNQgZe>fg
> z!<Tc;atmj#E^r~sO5CrU*Y!v6r2HZHu+xHxCez1Be-QWWY@jipWCo#QAj2cmKViS+
> z>3qy_x650R$s4<<>(#fn-?h&F-EXcd`&Ow?x<#O{|2t1_ST|?GfBVkbbw3gwZ>Vwk
> z8XtE-7r!_GPJk2O1ULasfD_;ZH~~(86W|0m0ZxDu-~>1UPJk2O1ULasfD_;ZH~~(8
> z6W|0m0ZxDu-~>1UPJk2O1ULasfD_;ZH~~(86W|0m0ZxDu-~>1UPJk2O1ULasfD_;Z
> zH~~(86W|0m0ZxDu-~>1UPJk2O1ULasfD_;ZH~~(86W|0m0ZxDu-~>1UPJk2O1ULas
> zfD_;ZH~~(86W|0m0ZxDu-~>1UPJk2O1ULasfD_;ZH~~(86W|0m0ZxDu-~>1UPJk2O
> z1ULasfD_;ZH~~(86W|0m0ZxDu-~>1UPJk2O1ULasfD_;ZH~~(86W|0m0ZxDu-~>1U
> zPJk2O1ULasfD_;ZH~~(86W|0m0ZxDu-~>1UPJk2O1ULasfD_;ZH~~(86W|0m0ZxDu
> z-~>1UPJk2O1ULasfD_;ZH~~(86W|0m0ZxDu-~>1UPJk2O1ULasfD_;ZH~~(86W|0m
> z0Z!od1Ux-$$J=_^2HLc?{{JUzm0dl`OkLOi(JspO^xUV&;+-j7IrD2oSp}ujDU3^>
> o5d@0NUb>FZ&)-2Do-dnE`R8)xT^9bc5QmajO4XIv_+RY*0|l%Fi~s-t
> 
> literal 0
> HcmV?d00001
> 
> diff --git a/roms/Makefile b/roms/Makefile
> index 775c963f9d..47eabc8633 100644
> --- a/roms/Makefile
> +++ b/roms/Makefile
> @@ -67,6 +67,7 @@ default:
>       @echo "  opensbi32-virt     -- update OpenSBI for 32-bit virt machine"
>       @echo "  opensbi64-virt     -- update OpenSBI for 64-bit virt machine"
>       @echo "  opensbi64-sifive_u -- update OpenSBI for 64-bit sifive_u 
> machine"
> +     @echo "  bios-microvm       -- update bios-microvm.bin (qboot)"

I'd go the other way around:

        @echo "  qboot -- update qboot (BIOS used by microvm)"

>       @echo "  clean              -- delete the files generated by the 
> previous" \
>                                     "build targets"
>  
> @@ -185,6 +186,10 @@ opensbi64-sifive_u:
>               PLATFORM="qemu/sifive_u"
>       cp opensbi/build/platform/qemu/sifive_u/firmware/fw_jump.bin 
> ../pc-bios/opensbi-riscv64-sifive_u-fw_jump.bin
>  
> +bios-microvm:

   qboot:

or

   qboot bios-microvm:

> +     $(MAKE) -C qboot
> +     cp qboot/bios.bin ../pc-bios/bios-microvm.bin
> +
>  clean:
>       rm -rf seabios/.config seabios/out seabios/builds
>       $(MAKE) -C sgabios clean
> @@ -197,3 +202,4 @@ clean:
>       $(MAKE) -C skiboot clean
>       $(MAKE) -f Makefile.edk2 clean
>       $(MAKE) -C opensbi clean
> +     $(MAKE) -C qboot clean
> diff --git a/roms/qboot b/roms/qboot
> new file mode 160000
> index 0000000000..cb1c49e0cf
> --- /dev/null
> +++ b/roms/qboot
> @@ -0,0 +1 @@
> +Subproject commit cb1c49e0cfac99b9961d136ac0194da62c28cf64
> 



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