Re: [microblaze-uclinux] Booting from system ace

[Michal Simek <monstr@xxxxxxxxx>]

Hi Nathan,

> Michal - Never mind about your git server.  I now see that your
> instructions direct me to git from denx.de which is working.  (I got
> hung up on your "recommended repository" section under Microblaze,
> which references git.monstr.eu).

yes I know. I changed it. If you have any problem with u-boot bsp, please
contact me I'll send you latest version.

Michal

> 
> On Tue, Oct 14, 2008 at 10:19 AM, Nathan Hillery <nhillery1@xxxxxxxxx> wrote:
>> John & Michal - Thanks for your helpful responses. I think I have a
>> much clearer view of what needs to happen now (it's amazing how I can
>> labor under delusion for so long, only realizing after a truer picture
>> emerges...)
>>
>> John - If I add u-boot.elf to the ace file (I assume that's what you
>> mean), then I won't have need for fs-boot, correct?  If I understand
>> it corrrectly, the SystemACE configuration process will program the
>> FPGA, initialize RAM with u-boot, and jump to it.  Then it's up to
>> u-boot to locate the kernel in the filesystem on the SystemACE Compact
>> Flash.  Do the ace files and filesystem have to be in different
>> partitions? (sorry for 20 questions - pondering out loud now...) The
>> ACE needs to be in a FAT16 filesystem. U-boot & petalinux may be able
>> to support that, but there may be performance reasons to have a more
>> sophisticated filesystem for the linux files. (pondering done - at
>> least out loud;-)
>>
>> Michal - If I read http://monstr.eu/wiki/doku.php correctly, it looks
>> like you have added support for SystemACE to u-boot. Is that correct?
>> It looks like your git server is down - is there an alternative and/or
>> when will yours be available again? Finally, it looks like the page
>> describing the lltemac driver for u-boot is a site with "limited
>> access".  I have a need for temac support, what do I need to do to get
>> access to that? (We have a Marvell 88E1121 dual gigabit transceiver on
>> our board. We've had problems where it looked like the temac is
>> referencing phy0, but the 88E1121 operates on phy1. We also can't get
>> RGMII to work evidently.  Has anyone gotten either or both of those
>> features working, or have familiarity with the territory? Deadlines
>> passed, new milestones looming...)
>>
>> On Tue, Oct 14, 2008 at 1:34 AM, John Williams <jwilliams@xxxxxxxxxxxxxx> wrote:
>>> Hi Nathan,
>>>
>>> Nathan Hillery wrote:
>>>> I lied a little;-) My board has flash, but only enough to program the
>>>> FPGA.
>>>> I have fs-boot working from bram (it is selected to initialize block
>>>> ram) and it works - at least it starts and accepts an s-rec file.
>>>> However, it doesn't seem to know about the flash in system ace,
>>>> so it doesn't write the downloaded file correctly.  To get around
>>>> that, I was trying to get u-boot to build with system ace support, but
>>>> haven't been able to get it to compile successfully.
>>>>
>>>> I have found a potential solution in "Software Platform Settings" ->
>>>> "OS and Libraries" configuration for petalinux. This allows you to
>>>> select the "Name of Flash Memory Controller" for petalinux, but won't
>>>> recognize any variation on the name in my design.  The core is
>>>> xps_sysace and my instance is SysACE_CompactFlash.
>>> This is a common misconception.  SystemACE presents itself to the MicroBlaze
>>> as a block-based, disk-like device, not a typical parallel flash memory
>>> interface as is expected by the PetaLinux tools and u-boot default configs
>>> etc.
>>>
>>> As Michal says, you have a bit of work to do as this is not a default
>>> configuration.
>>>
>>> To be honest the easiest way to do this would be to just add the u-boot elf
>>> file as a payload after the configuration bitstream on the compact flash
>>> device, this would just boot u-boot directly after configuration the FPGA.
>>>
>>> But, you'll then have to hack on u-boot to get it to interact with the
>>> systemACE (as a disk, not flash memory).  Then, you should be able to pull a
>>> kernel from SystemACE for booting.  I think the upstream u-boot sources at
>>> denx.de have a SystemACE driver you could backport.
>>>
>>> Regards,
>>>
>>> John
>>>
>>>
>>>
>>> ___________________________
>>> microblaze-uclinux mailing list
>>> microblaze-uclinux@xxxxxxxxxxxxxx
>>> Project Home Page : http://www.itee.uq.edu.au/~jwilliams/mblaze-uclinux
>>> Mailing List Archive :
>>> http://www.itee.uq.edu.au/~listarch/microblaze-uclinux/
>>>
>>>
> ___________________________
> microblaze-uclinux mailing list
> microblaze-uclinux@xxxxxxxxxxxxxx
> Project Home Page : http://www.itee.uq.edu.au/~jwilliams/mblaze-uclinux
> Mailing List Archive : http://www.itee.uq.edu.au/~listarch/microblaze-uclinux/
> 
> 
___________________________
microblaze-uclinux mailing list
microblaze-uclinux@xxxxxxxxxxxxxx
Project Home Page : http://www.itee.uq.edu.au/~jwilliams/mblaze-uclinux
Mailing List Archive : http://www.itee.uq.edu.au/~listarch/microblaze-uclinux/