From mboxrd@z Thu Jan  1 00:00:00 1970
From: Padmarao Begari <padmarao.b@gmail.com>
Date: Fri, 22 Mar 2019 08:35:28 +0530
Subject: [U-Boot] [PATCH v3 00/11] SMP support for RISC-V
In-Reply-To: <4ee42e26-9dbe-a7e0-60fd-a558eff07c03@wdc.com>
References: <20190317182842.18108-1-lukas.auer@aisec.fraunhofer.de>
 <20190321153615.GB9699@bc.grid.coop>
 <CAEUhbmXpCiOUVzpmMCFirWFStWQ=p6aj9dNcv5hJG_MUdVYg4w@mail.gmail.com>
 <4ee42e26-9dbe-a7e0-60fd-a558eff07c03@wdc.com>
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To: u-boot@lists.denx.de

I think, the boot flow explained above is supported the sifive fu540 board
default boot mode.
if we want to select debug mode, then, does this patches work with the
u-boot to TFTP booting(dhcp, bootp) in debug mode?

Regards
Padmarao

On Fri, Mar 22, 2019 at 4:47 AM Atish Patra <atish.patra@wdc.com> wrote:

> On 3/21/19 4:06 PM, Bin Meng wrote:
> > On Thu, Mar 21, 2019 at 11:39 PM Troy Benjegerdes <hozer@hozed.org>
> wrote:
> >>
> >> On Sun, Mar 17, 2019 at 07:28:31PM +0100, Lukas Auer wrote:
> >>> This patch series adds SMP support for RISC-V to U-Boot. It allows
> >>> U-Boot to run on multi-hart systems (hart is the RISC-V terminology for
> >>> hardware thread). Images passed to bootm will be started on all harts.
> >>> The bootm command is currently the only one that will boot images on
> all
> >>> harts, bootefi is not yet supported.
> >>>
> >>> The patches have been successfully tested on both QEMU (machine and
> >>> supervisor mode) and the HiFive Unleashed board (supervisor mode),
> using
> >>> BBL and OpenSBI.
> >>
> >> Can you describe the test configuration and boot flow a little more, or
> post an
> >> SDcard image that boots with the switches as shown in the readme at [1]
> >>
> >> I don't see any board-specific memory initialization code anywhere, so
> I assume
> >> you are still using the original SiFive FSBL, and not the u-boot
> version that
> >> includes the memory init code [2]
> >>
> >
> > Correct. Mainline U-Boot on the FU540 board runs on S-mode currently.
> > You can refer to documentation doc/README.sifive-fu540
> >
>
> To add Bin's comment, the boot flow described in README.sifive-fu540 is
>
> ZSBL->FSBL->OpenSBI/BBL->U-Boot(S Mode)->Linux
>
> FYI: For BBL, you need to hack U-Boot to add serial console in DT.
>
> IMHO, we should avoid forks and use upstream code as much as possible.
>
> The memory initialization patches in [2] were never upstreamed. It would
> be great if that can upstream them so that we can replace FSBL as well.
> U-Boot SPL support for RISC-V would even be better.
>
> Regards,
> Atish
> >> [1] https://github.com/sifive/freedom-u-sdk
> >> [2] https://github.com/sifive/HiFive_U-Boot
> >>
> >
> > Regards,
> > Bin
> > _______________________________________________
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> >
>
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