FW: [Ltib] FW: boot problems after upgrading ltib version for MPC8315ERDB

[Belcham Rob (ST-CO/ENG5)]

Hi Stuart,

The BSP ISO update was downloaded from the freescale website.
The version of u-boot is 2009.03-rc2.

Thanks for the dtu / dtb tip - I've managed to get a bit further & with the aid 
of some printf's I think I can see what's going on :-

The boot commands I'm using are :-

=> tftp 200000 uImage
=> tftp 400000 mpc8315erdb-default.dtu
=> bootm 200000 - 400000

What seems to happen, is the FDT is found at 400000 and then re-located to the 
load address at 300000, which is contained in the fdt image header. When the 
kernel is then uncompressed to address 0, it overwrites the FDT at location 
300000.

## Flattened Device Tree from Legacy Image at 00400000
   Image Name:
   Created:      2010-01-08  10:24:30 UTC
   Image Type:   PowerPC Linux Flat Device Tree (uncompressed)
   Data Size:    9953 Bytes =  9.7 kB
   Load Address: 00300000
   Entry Point:  00000000
   Verifying Checksum ... OK

   Uncompressing Kernel Image ...  load(0x0) unc_len(0x800000), 
image_start(0x200040), image_len(0x1FA245)

>From using find-in-files, I've found the following line in 
>dist/lfs-5.1/kernel/kernel-common.tmpl

   DTC_LOAD_ADDR=${SYSCFG_DTU_LOAD_ADDR:-0x300000}

Which I believe is providing the default load address for the mkimage'd dtb.

So my next question is : where is the correct place to define 
SYSCFG_DTU_LOAD_ADDR ? - it currently doesn't appear to be defined (I can't 
find using find-in-files). I want to try moving this to address 400000 so that 
it doesn't get trashed by the uncompressed kernel. 

Thanks

Rob Belcham


Principal DSP Engineer
Midas and Klark Teknik 

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-----Original Message-----
From: address@hidden [mailto:address@hidden On Behalf Of Stuart Hughes
Sent: 10 January 2010 11:37
To: Belcham Rob (ST-CO/ENG5)
Cc: address@hidden
Subject: Re: [Ltib] FW: boot problems after upgrading ltib version for 
MPC8315ERDB

Hi Bob,

Was the update (20091019) a Freescale BSP ISO or Savannah CVS?
Also, what version of u-boot is this?

Looking at your failure it seems the problem is likely to do with the 
boot arguments you are passing.  What is your boot command line?

For NFS boot using powerpc for later u-boots and later zImage kernels it 
should be something like (after loading the images)

bootm bootm $loadkernaddr - $loaddtbaddr

Note the device tree you load needs to be a .dtu (i.e. a .dtb that 
mkimage has been run on).  LTIB normally builds these for you and you'd 
see them in rootfs/boot.

Regards, Stuart

Belcham Rob (ST-CO/ENG5) wrote:
>  
> Hi,
>  
> I'm not sure if this is really the right place to ask, but since the 
> issue I have is related to problems encountered when updating the 
> version of Ltib I'm using - I thought it would be a good place to start.
>  
> I'm using the ltib from freescale for the MPC8315E Power quicc 
> processor. I was previously using the release that came with the dev 
> board dated 20080630, which used u-boot 1.20 to NFS boot my board.
>  
> I have switched to the latest ltib release dated 20091019 but I can't 
> get my board to boot correcly with the new linux kernel & u-boot images 
> that I've built.
>  
> I've programmed the latest flavour of u-boot into my board, but it fails 
> when trying to boot into linux. Here's the boot-up output :
>  
>  
> U-Boot 2009.03-rc2 (Jan 07 2010 - 15:47:10) MPC83XX
>  
> Reset Status:
>  
> CPU:   e300c3, MPC8315E, Rev: 1.1 at 400 MHz, CSB: 133.333 MHz
> Board: Freescale MPC8315ERDB Rev 1.0
> I2C:   ready
> DRAM:  128 MB
> FLASH:  8 MB
> NAND:  32 MiB
> PCIE0: No link
> PCIE1: No link
> In:    serial
> Out:   serial
> Err:   serial
> Net:   eTSEC0, eTSEC1
> Hit any key to stop autoboot:  0
> Speed: 100, full duplex
> Using eTSEC0 device
> TFTP from server 192.168.20.3; our IP address is 192.168.20.10
> Filename 'uImage'.
> Load address: 0x500000
> Loading: #################################################################
>          #################################################################
>          ###########
> done
> Bytes transferred = 2069379 (1f9383 hex)
> Speed: 100, full duplex
> Using eTSEC0 device
> TFTP from server 192.168.20.3; our IP address is 192.168.20.10
> Filename 'mpc8315erdb-default.dtb'.
> Load address: 0x400000
> Loading: #
> done
> Bytes transferred = 9953 (26e1 hex)
> ## Booting kernel from Legacy Image at 00500000 ...
>    Image Name:   Linux-2.6.29.6-rt23
>    Created:      2010-01-07  15:31:48 UTC
>    Image Type:   PowerPC Linux Kernel Image (gzip compressed)
>    Data Size:    2069315 Bytes =  2 MB
>    Load Address: 00000000
>    Entry Point:  00000000
>    Verifying Checksum ... OK
> ## Flattened Device Tree blob at 00400000
>    Booting using the fdt blob at 0x400000
>    Uncompressing Kernel Image ... OK
> ERROR: image is not a fdt - must RESET the board to recover.
> Resetting the board.
>  
> At which point, the unit reboots & starts all over again.
>  
> I've checked that the version of mpc8315erdb-default.dtb is the one 
> built by the latest ltib.
>  
> Not sure where to go from here -- anyone got any ideas ?
>  
> Thanks in advance.
>  
> Rob Belcham
> 
> Principal DSP Engineer
> *Midas and Klark Teknik*
>  
> /Please note my email will be changing shortly to  
> /address@hidden <mailto:address@hidden>./ Please 
> update your records accordingly/ 
>  
> Switch Board: +44 1562 741515
> 
> _www.midasconsoles.com_ <http://www.midasconsoles.com/> │ 
> _www.klarkteknik.com_ <http://www.klarkteknik.com/> │ 
> _www.ktsquareone.com_ <http://www.ktsquareone.com/>
>  
> *Bosch Communications Systems
> 
> *Telex Communications (UK) Limited, Limited Company, Number 2414018, 
> Incorporated in England.
>  
> Registered Office:
> Klark Industrial Park, Walter Nash Road, Kidderminster. Worcestershire. 
> DY11 7HJ. UK.
>  
> *Warning!* The information contained in this e-mail is confidential and 
> is intended for the use only of the addressee.
> Any unauthorised dissemination or copying of this e-mail and any use or 
> disclosure of information contained in it is strictly prohibited and may 
> be illegal.
> Please note that we cannot accept any responsibility for any transmitted 
> viruses. It is therefore your responsibility to virus scan attachments.
>  
> 
> 
> ------------------------------------------------------------------------
> 
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