Re: [U-Boot] Commands to use U-boot in fpga

[Calvin Johnson]

> -Original Message-
> From: U-Boot [mailto:u-boot-boun...@lists.denx.de] On Behalf Of Lukasz
> Majewski
> Sent: Friday, October 27, 2017 5:18 PM
> To: Ammu Lakshmy <ammulakshm...@gmail.com>
> Cc: u-boot@lists.denx.de
> Subject: Re: [U-Boot] Commands to use U-boot in fpga
> 
> On Fri, 27 Oct 2017 16:45:16 +0530
> Ammu Lakshmy <ammulakshm...@gmail.com> wrote:
> 
> > Architecture is LEON2 and is supported by U-Boot.
> > But the steps involved in my work are
> >
> > *1. Implement LEON2 processor in FPGA(Spartan3E or any other fpga)*
> 
> Ok.
> 
> > *2. Deploy OS in that processor.*
> 
> When you have working soft core of LEON2 - then you would need:
> 
> - U-boot ported to it (and this is not the problem - since you say that
>   it is supported in U-Boot)

Ammu,  once you have working LEON2, I guess you can use U-Boot from 
https://github.com/qoriq-open-source/u-boot/tree/master/arch/sparc/cpu/leon2

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Re: [U-Boot] Commands to use U-boot in fpga

[Ammu Lakshmy]

Architecture is LEON2 and is supported by U-Boot.
But the steps involved in my work are

*1. Implement LEON2 processor in FPGA(Spartan3E or any other fpga)*
*2. Deploy OS in that processor.*
*3. Implement a router on that processor with OS.*

First step is possible as I have the HDL code of LEON2. I can implement it
on spartan3E.
Are the next 2 steps possible with U-Boot?

On Fri, Oct 27, 2017 at 4:28 PM, Lukasz Majewski  wrote:

> Hi Ammu,
>
> > Hi,
> >
> > I am new to U-Boot and I want to use it for dumping linux to a sparc
> > processor (leon2) which I have implemented in Spartan 3E fpga. Is it
> > possible?
>
> First you need to check if the architecture on which you run u-boot is
> supported (sparc?).
>
> There are some IP soft cores supported in u-boot:
> arch/nios2/
> arch/microblaze/
>
>
> Regarding SPARC:
>
> http://git.denx.de/?p=u-boot/u-boot-sparc.git;a=summary
>
> But if I remember correctly it has been removed recently.
>
> However, if you want to re-add it for your platform -> patches are as
> always welcome :-)
>
> >
> > This is to implement a router code in my processor.
> >
>
>
>
>
> Best regards,
>
> Lukasz Majewski
>
> --
>
> DENX Software Engineering GmbH,  Managing Director: Wolfgang Denk
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
> Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de
>



-- 
Thanks & Regards,
Ammu Lakshmy R.
M.Tech. VLSI Design
VNIT, Nagpur
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Re: [U-Boot] Commands to use U-boot in fpga

[Lukasz Majewski]

On Fri, 27 Oct 2017 16:45:16 +0530
Ammu Lakshmy  wrote:

> Architecture is LEON2 and is supported by U-Boot.
> But the steps involved in my work are
> 
> *1. Implement LEON2 processor in FPGA(Spartan3E or any other fpga)*

Ok.

> *2. Deploy OS in that processor.*

When you have working soft core of LEON2 - then you would need:

- U-boot ported to it (and this is not the problem - since you say that
  it is supported in U-Boot)

- Linux mainline kernel, which can run on this processor.

U-boot is only a bootloader, which means that its main purpose is to
setup environment (like initialize DRAM, load OS from persistent
storage) for pass execution flow to OS (Linux)

> *3. Implement a router on that processor with OS.*

If you have Linux running on the soft core and enough number of ETH phy
devices you can configure Linux box to work as a router (with proper
iproute[2] rules).

TO sum up:

You need 3 things:

- U-boot running on your soft core
- Linux running on your soft core
- Number of working ETH phys to connect network cables.

> 
> First step is possible as I have the HDL code of LEON2. I can
> implement it on spartan3E.
> Are the next 2 steps possible with U-Boot?
> 
> On Fri, Oct 27, 2017 at 4:28 PM, Lukasz Majewski 
> wrote:
> 
> > Hi Ammu,
> >
> > > Hi,
> > >
> > > I am new to U-Boot and I want to use it for dumping linux to a
> > > sparc processor (leon2) which I have implemented in Spartan 3E
> > > fpga. Is it possible?
> >
> > First you need to check if the architecture on which you run u-boot
> > is supported (sparc?).
> >
> > There are some IP soft cores supported in u-boot:
> > arch/nios2/
> > arch/microblaze/
> >
> >
> > Regarding SPARC:
> >
> > http://git.denx.de/?p=u-boot/u-boot-sparc.git;a=summary
> >
> > But if I remember correctly it has been removed recently.
> >
> > However, if you want to re-add it for your platform -> patches are
> > as always welcome :-)
> >
> > >
> > > This is to implement a router code in my processor.
> > >
> >
> >
> >
> >
> > Best regards,
> >
> > Lukasz Majewski
> >
> > --
> >
> > DENX Software Engineering GmbH,  Managing Director: Wolfgang
> > Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell,
> > Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email:
> > w...@denx.de
> >
> 
> 
> 




Best regards,

Lukasz Majewski

--

DENX Software Engineering GmbH,  Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de
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Re: [U-Boot] Commands to use U-boot in fpga

[Lukasz Majewski]

Hi Ammu,

> Hi,
> 
> I am new to U-Boot and I want to use it for dumping linux to a sparc
> processor (leon2) which I have implemented in Spartan 3E fpga. Is it
> possible?

First you need to check if the architecture on which you run u-boot is
supported (sparc?).

There are some IP soft cores supported in u-boot:
arch/nios2/
arch/microblaze/


Regarding SPARC:

http://git.denx.de/?p=u-boot/u-boot-sparc.git;a=summary

But if I remember correctly it has been removed recently.

However, if you want to re-add it for your platform -> patches are as
always welcome :-)

> 
> This is to implement a router code in my processor.
> 




Best regards,

Lukasz Majewski

--

DENX Software Engineering GmbH,  Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de
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[U-Boot] Commands to use U-boot in fpga

[Ammu Lakshmy]

Hi,

I am new to U-Boot and I want to use it for dumping linux to a sparc
processor (leon2) which I have implemented in Spartan 3E fpga. Is it
possible?

This is to implement a router code in my processor.

-- 
Thanks & Regards,
Ammu Lakshmy R.
M.Tech. VLSI Design
VNIT, Nagpur
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