Hi,
i use the AVnet Xilinx4 FX12 Minimodule and until now, i use system-ace
to configure the fpga and boot the linux kernel.
But now, i want to boot from the on board flash memory and have no idea
where to start.
I think i have to:
- save the fpga configuration in the fpga-prom
- use/program some kind of bootloader store in fpga block ram to jump to
the flash-adress where the executable linux kernel resist
- use the mtd-device driver to mount root fs on the same flash some
address later
Is this the right way ?
Regards
Georg
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Hi again,
i've learned a little bit :)
- I have download the zImage.elf via the EDK flash loader
- The flash loader creates a bootloader, this is also running on start up=
:)
But ... It stops with an error-message after a few seconds:
EDK Bootloader:
Bootloader: Processed (0x)000000b2 S-recordsERROR: SREC line is corrupted=
What now ?
Georg
MingLiu wrote:
Dear Georg,
I guess you were talking about the booting process of the system, both =
HW and the SW, from the flash memory. This process should be like this:
1. Store your HW bitstream and Linux kernel in flash memories. If neede=
d, perhaps you want another bootloader program, such as U-boot also insid=
e.=20
2. In your HW bitstream, you need one bootloader which helps you to loa=
d the software and execute it in DDR-ram. EDK helps you to generate such =
a bootloader when you design.=20
3. Durong Power on, HW bitstream (with an EDK bootloader included) will=
be loaded into FPGA and configure the FPGA, then the EDK bootloader will=
load your Linux kernel into DDR-Ram and execute it there. Thus your linu=
x could run.=20
This is a normal process. If you want to execute the program in flash d=
irectly, that's another story. Also you should know, for the booting proc=
ess, MTD driver is not necessary. The driver is only used when you want t=
o access flash memories when you booted your Linux kernel.
Clear or not? :)
Best Regards
Ming
----------------------------------------> Date: Wed, 7 Nov 2007 13:00:3=
5 +0100> From: g.schardt@fz-juelich.de> To: Linuxppc-embedded@ozlabs.org>=
Subject: Bootloader & Flash>> Hi,>> i use the AVnet Xilinx4 FX12 Minimod=
ule and until now, i use system-ace> to configure the fpga and boot the l=
inux kernel.> But now, i want to boot from the on board flash memory and =
have no idea> where to start.>> I think i have to:> - save the fpga confi=
guration in the fpga-prom> - use/program some kind of bootloader store in=
fpga block ram to jump to> the flash-adress where the executable linux k=
ernel resist> - use the mtd-device driver to mount root fs on the same fl=
ash some> address later>> Is this the right way ?>>> Regards> Georg>>>>>>=
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Aufsichtsrats: MinDirig'in B=C3=A4rbel Brumme-Bothe> Gesch=C3=A4ftsf=C3=BC=
hrung: Prof. Dr. Achim Bachem (Vorsitzender), Dr. Ulrich Krafft (stellv.>=
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Hi,
- I have download the zImage.elf via the EDK flash loader> - The flash loader creates a bootloader, this is also running on start up :)
What you need to store in flash memory, is not the .elf file. Before you use EDK flash loader to burn your linux kernel in flash, .elf file should be transfered into .srec file, just like the below reminds you: SREC line is corrupted.
But ... It stops with an error-message after a few seconds:> > EDK Bootloader:> Bootloader: Processed (0x)000000b2 S-recordsERROR: SREC line is corrupted> > What now ?
Hopefully it helps.
BR
Ming
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Argl :)
The error was so ... simple.
The Flash device is broken. I take a new MiniModul and all things are
running.
Thanks a lot
Georg
MingLiu wrote:
Hi,
quoted
- I have download the zImage.elf via the EDK flash loader
- The flash loader creates a bootloader, this is also running on
start up :)
What you need to store in flash memory, is not the .elf file. Before
you use EDK flash loader to burn your linux kernel in flash, .elf file
should be transfered into .srec file, just like the below reminds you:
SREC line is corrupted.
quoted
But ... It stops with an error-message after a few seconds:
EDK Bootloader:
Bootloader: Processed (0x)000000b2 S-recordsERROR: SREC line is
corrupted
quoted
What now ?
Hopefully it helps.
BR
Ming
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Vorsitzende des Aufsichtsrats: MinDirig'in B"arbel Brumme-Bothe
Gesch"aftsf=A8=B9hrung: Prof. Dr. Achim Bachem (Vorsitzender), Dr. Ulrich=
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Sometimes the simplest error is the most diffucult one to be found. :)
Have fun.
BR
Ming
Date: Fri, 9 Nov 2007 15:16:23 +0100> From: g.schardt@fz-juelich.de> To: eemingliu@hotmail.com> CC: linuxppc-embedded@ozlabs.org> Subject: Re: Bootloader & Flash> > Argl :)> > The error was so ... simple.> The Flash device is broken. I take a new MiniModul and all things are> running.> > Thanks a lot> Georg> > MingLiu wrote:> > Hi,> >> > > - I have download the zImage.elf via the EDK flash loader> > > - The flash loader creates a bootloader, this is also running on> > start up :)> >> > What you need to store in flash memory, is not the .elf file. Before> > you use EDK flash loader to burn your linux kernel in flash, .elf file> > should be transfered into .srec file, just like the below reminds you:> > SREC line is corrupted.> >> >> > > But ... It stops with an error-message after a few seconds:> > >> > > EDK Bootloader:> > > Bootloader: Processed (0x)000000b2 S-recordsERROR: SREC line is> > corrupted> > >> > > What now ?> >> > Hopefully it helps.> >> > BR> > Ming> >> > ------------------------------------------------------------------------> > 用 Windows Live Spaces 展示个性自我，与好友分享生活！ 了解更多信息！> > <http://spaces.live.com/?page=HP>> > > > -----------------------------------------------------------------------------------------> -----------------------------------------------------------------------------------------> Forschungszentrum Jülich GmbH> 52425 Jülich> > Sitz der Gesellschaft: Jülich> Eingetragen im Handelsregister des Amtsgerichts Düren Nr. HR B 3498> Vorsitzende des Aufsichtsrats: MinDirig'in B"arbel Brumme-Bothe> Gesch"aftsführung: Prof. Dr. Achim Bachem (Vorsitzender), Dr. Ulrich Krafft (stellv. > Vorsitzender)> -----------------------------------------------------------------------------------------> -----------------------------------------------------------------------------------------
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