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Re: [microblaze-uclinux] Booting from system ace

Hi Nathan,


> Thanks for your quick and helpful responses.  I was not able to
> download the latest version of u-boot BSP, but I had a copy I had
> downloaded sometime past.  I followed the instructions in README for
> adding a new board and got it to compile eventually and am now on step
> 6 (debug and solve problems;-)  I get no output on the RS232 when I
> run my u-boot.

go to include/configs/your_board_config.h -> disable flash -> move variables to
ram. Important file is in lib_microblaze/board.c. You can add there your debug
messages too. Please check your board folder and config.mk and xparameters.h file.

>  What do you recommend using to debug?  I am trying to
> get XPS XMD/software debugger to let me see what is going on, but
> without success. XPS is on windows and I built u-boot on linux.  I
> haven't succeeded in getting XPS to see the u-boot application as
> something to be debugged.  I am also trying mb-gdb outside of XPS, but
> since I copied across systems, the paths to source files don't match
> so I don't see anything either.  My rusty gears are turning (slowly)
> to remind me how to get around that in gdb.

use microblaze-uclinux-gdb or insight from petalinux distribution not mb-gdb
from edk tools.

> Here's some feedback on your instructions at
> http://www.monstr.eu/wiki/doku.php?id=uboot:uboot (if you want it):
> In "Copy BSP to project folder bsp or edk_project_repository": The
> directory structure of the u-boot BSP didn't match what EDK 10.1.3 was
> expecting.  The u-boot BSP looked like: u-boot/data/*.mld & *.tcl,
> while 10.1.3 wants u-boot/bsp/uboot_v1_00_a/data/*.mld & *.tcl.

Yes, I choose this because it is better for me to keep history from the begin of
project. If you started with version on git you break history. There should be
version number but if you add bsp to your project to bsp folder
uboot_v1_00_a/data/*.mld & *.tcl. is enough. This is nothing specific for
edk10.1.3. This was in edk almost forever.


> In listing of MSS, it shows PARAMETER intc, but this is commented out
> of the mld file so will never appear.  Also, PARAMETER stdin_out was
> replaced with seperate entries for stdin and stdout. Is there guidance
> on the value to pick for uboot_position?

Intc is automatically found and added. Stdin and stdout is there because I use
top bsp for generating some bsp together and as you can see petalinux bsp use
stdin and stdout lables that's why I use the same name there too.


> In "Copy config.mk & xparameters.h to ..." I had to go search for
> those files.  I found them at
> microblaze_0/libsrc/uboot_v1_00_a/config.mk &
this is ok

> microblaze_0/libsrc/xparameters.h.

but this is not. the path is the same as in above. (xparameters.h is small - if
you see my name on the top is ok,)


> Thanks for your work in maintaining u-boot & helping us follow your trailblaze!
It seems that I should upgrade manual a little bit older that is current BSP.
I'll do it today.

Michal

> Cheers,
> Nathan.
> 
> On Tue, Oct 14, 2008 at 3:07 PM, Michal Simek <monstr@xxxxxxxxx> wrote:
>> 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
>>>>>
>>>>>
>>>>>
>>>>> ___________________________
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>>>>> Project Home Page : http://www.itee.uq.edu.au/~jwilliams/mblaze-uclinux
>>>>> Mailing List Archive :
>>>>> http://www.itee.uq.edu.au/~listarch/microblaze-uclinux/
>>>>>
>>>>>
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>>>
>>>
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>>
>>
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