Directly boot the image of Linux for RISC-V

[王翔]

Hello Dear:

I added some code to support linux binary directly as a payload to boot for RISC-V.

modify:
    1. opensbi is an open source sbi implementation(https://github.com/riscv/opensbi)
    2. Linux binary is used as the payload of opensbi
    3. The elf generated by opensbi compilation is used as the coreboot payload.

Code reference:
    https://github.com/hardenedlinux/coreboot-HiFiveUnleashed/tree/r1

Whether to consider adding opensbi to 3rdparty?
Do you have any suggestions?

XiangWang

------------------

王翔

安全研究员

广州市腾御安信息科技有限公司

广州市天河区珠江新城华穗路406号保利克洛维二期中景A座1020-1024

[Philipp Hug]

Hi Xiang,

I think the best way to integrate opensbi for now would be to put it into
the payloads/external directory and execute it as a rampayload. (in m-mode)

Philipp

On Tue, 2 Apr 2019 at 11:32, 王翔  wrote:
> Hello Dear:
>
> I added some code to support linux binary directly as a payload to boot
> for RISC-V.
>
> modify:
>     1. opensbi is an open source sbi implementation(
> https://github.com/riscv/opensbi)
>     2. Linux binary is used as the payload of opensbi
>     3. The elf generated by opensbi compilation is used as the coreboot
> payload.
>
> Code reference:
>     https://github.com/hardenedlinux/coreboot-HiFiveUnleashed/tree/r1
>
> Whether to consider adding opensbi to 3rdparty?
> Do you have any suggestions?
>
> XiangWang
>
> 王翔
>
> 安全研究员
>
> 广州市腾御安信息科技有限公司
>
> 广州市天河区珠江新城华穗路406号保利克洛维二期中景A座1020-1024

[ron minnich]

yeah I agree. Thanks for responding Philipp, I dropped the ball.

We need to have another riscv hacking session in june.

On Thu, Apr 4, 2019 at 7:39 AM Philipp Hug  wrote:
> Hi Xiang,
>
> I think the best way to integrate opensbi for now would be to put it into
> the payloads/external directory and execute it as a rampayload. (in m-mode)
>
> Philipp
>
> On Tue, 2 Apr 2019 at 11:32, 王翔  wrote:
> > Hello Dear:
> >
> > I added some code to support linux binary directly as a payload to boot
> > for RISC-V.
> >
> > modify:
> >     1. opensbi is an open source sbi implementation(
> > https://github.com/riscv/opensbi)
> >     2. Linux binary is used as the payload of opensbi
> >     3. The elf generated by opensbi compilation is used as the coreboot
> > payload.
> >
> > Code reference:
> >     https://github.com/hardenedlinux/coreboot-HiFiveUnleashed/tree/r1
> >
> > Whether to consider adding opensbi to 3rdparty?
> > Do you have any suggestions?
> >
> > XiangWang
> >
> > 王翔
> >
> > 安全研究员
> >
> > 广州市腾御安信息科技有限公司
> >
> > 广州市天河区珠江新城华穗路406号保利克洛维二期中景A座1020-1024

[王翔]

Done!

reference: https://github.com/hardenedlinux/coreboot-HiFiveUnleashed/tree/opensbi-test

------------------

王翔

安全研究员

广州市腾御安信息科技有限公司

广州市天河区珠江新城华穗路406号保利克洛维二期中景A座1020-1024

------------------ Original ------------------
From:  "Philipp Hug";
Date:  Thu, Apr 4, 2019 10:39 PM
To:  "王翔"; 
Cc:  "j.neuschaefer"; "rminnich"; "coreboot"; "citypw"; 
Subject:  Re: Directly boot the image of Linux for RISC-V

Hi Xiang,

I think the best way to integrate opensbi for now would be to put it into the payloads/external directory and execute it as a rampayload. (in m-mode)

Philipp

On Tue, 2 Apr 2019 at 11:32, 王翔  wrote:

Hello Dear:

I added some code to support linux binary directly as a payload to boot for RISC-V.

modify:
    1. opensbi is an open source sbi implementation(https://github.com/riscv/opensbi)
    2. Linux binary is used as the payload of opensbi
    3. The elf generated by opensbi compilation is used as the coreboot payload.

Code reference:
    https://github.com/hardenedlinux/coreboot-HiFiveUnleashed/tree/r1

Whether to consider adding opensbi to 3rdparty?
Do you have any suggestions?

XiangWang

------------------

王翔

安全研究员

广州市腾御安信息科技有限公司

广州市天河区珠江新城华穗路406号保利克洛维二期中景A座1020-1024