RE: [PATCH v2 0/7] riscv: Switch to use generic platform of opensbi bios images

[Anup Patel]

> -----Original Message-----
> From: Bin Meng <bmeng.cn@gmail.com>
> Sent: 22 June 2020 17:57
> To: Anup Patel <Anup.Patel@wdc.com>
> Cc: Alistair Francis <Alistair.Francis@wdc.com>; Bastian Koppelmann
> <kbastian@mail.uni-paderborn.de>; Palmer Dabbelt
> <palmerdabbelt@google.com>; Sagar Karandikar
> <sagark@eecs.berkeley.edu>; qemu-devel@nongnu.org; qemu-
> riscv@nongnu.org; Anup Patel <anup@brainfault.org>; Bin Meng
> <bin.meng@windriver.com>
> Subject: Re: [PATCH v2 0/7] riscv: Switch to use generic platform of opensbi
> bios images
> 
> Hi Anup,
> 
> On Mon, Jun 22, 2020 at 8:20 PM Anup Patel <Anup.Patel@wdc.com> wrote:
> >
> >
> >
> > > -----Original Message-----
> > > From: Bin Meng <bmeng.cn@gmail.com>
> > > Sent: 22 June 2020 17:43
> > > To: Anup Patel <Anup.Patel@wdc.com>
> > > Cc: Alistair Francis <Alistair.Francis@wdc.com>; Bastian Koppelmann
> > > <kbastian@mail.uni-paderborn.de>; Palmer Dabbelt
> > > <palmerdabbelt@google.com>; Sagar Karandikar
> > > <sagark@eecs.berkeley.edu>; qemu-devel@nongnu.org; qemu-
> > > riscv@nongnu.org; Anup Patel <anup@brainfault.org>; Bin Meng
> > > <bin.meng@windriver.com>
> > > Subject: Re: [PATCH v2 0/7] riscv: Switch to use generic platform of
> > > opensbi bios images
> > >
> > > Hi Anup,
> > >
> > > On Mon, Jun 22, 2020 at 6:09 PM Anup Patel <Anup.Patel@wdc.com>
> wrote:
> > > >
> > > >
> > > >
> > > > > -----Original Message-----
> > > > > From: Qemu-riscv <qemu-riscv-
> > > > > bounces+anup.patel=wdc.com@nongnu.org> On Behalf Of Bin Meng
> > > > > Sent: 22 June 2020 12:03
> > > > > To: Alistair Francis <Alistair.Francis@wdc.com>; Bastian
> > > > > Koppelmann <kbastian@mail.uni-paderborn.de>; Palmer Dabbelt
> > > > > <palmerdabbelt@google.com>; Sagar Karandikar
> > > > > <sagark@eecs.berkeley.edu>; qemu-devel@nongnu.org; qemu-
> > > > > riscv@nongnu.org
> > > > > Cc: Anup Patel <anup@brainfault.org>; Bin Meng
> > > > > <bin.meng@windriver.com>
> > > > > Subject: [PATCH v2 0/7] riscv: Switch to use generic platform of
> > > > > opensbi bios images
> > > > >
> > > > > From: Bin Meng <bin.meng@windriver.com>
> > > > >
> > > > > The RISC-V generic platform is a flattened device tree (FDT)
> > > > > based platform where all platform specific functionality is
> > > > > provided based on FDT passed by previous booting stage. The
> > > > > support was added in the upstream OpenSBI
> > > > > v0.8 release recently.
> > > > >
> > > > > This series updates QEMU to switch to use generic platform of
> > > > > opensbi bios images.
> > > > >
> > > > > The patch emails do not contain binary bits, please grab all
> > > > > updates at https://github.com/lbmeng/qemu.git bios branch.
> > > >
> > > > It will be nice to have this series updated to for fw_dynamic.bin .
> > >
> > > Do you mean we include fw_dynamic.bin for virt & sifive_u, and
> > > fw_dynamic.elf for spike?
> > >
> > > But previously we agreed to include only generic platform BIN and ELF
> files.
> > > See
> > > https://lists.gnu.org/archive/html/qemu-devel/2020-05/msg00664.html
> >
> > I am suggesting to use Generic platform fw_dynamic.bin and
> > fw_dynamic.elf for QEMU virt, QEMU spike, and QEMU sifive_u machines.
> 
> Do you mean we replace fw_jump.bin with fw_dynamic.bin in QEMU? If
> everyone agrees this is the way to go, I can rebase this series on top of
> Atish's fw_dynamic.bin support series.

Yes, replace fw_jump.bin with fw_dynamic.bin in QEMU. It will definitely
benefit large kernel images (such as FreeBSD kernel) and it allow QEMU to
decide the FDT placement in DRAM.

Regards,
Anup