[U-Boot-Users] BDI3000 and PPC460GT board

[U-Boot-Users] BDI3000 and PPC460GT board

[vb]

Hello,

I am trying to control the amcc glacier (evkit460gt) eval board with a
BDI3000, using the config file from
ftp://78.31.64.234/bdigdb/config/powerpc/ppc4xx/ppc440/evkit460gt.cfg
(modulo my local IP/tftp configuration).

The problem is that the board fails to run under the BDI control, and
runs just fine without it.

When looking closer I see that the bdi resets the board properly and
takes it all the way to the point where the TLBs are set and the rfi
instruction is executed to jump out of the original 4k window. At this
point a TLB exception is thrown, that is it loos like TLB programming
'did not take' while under BDI control. So, if I just reset the board
and let it run, it keeps cycling through TLB error exception as no
memory other than the top 4k bytes is accessible. Again, it works just
fine without the BDI.

Any hints and suggestions will be highly appreciated,

TIA,
Vadim

[U-Boot-Users] BDI3000 and PPC460GT board

[Stefan Roese]

Hi Vadim,

On Wednesday 09 July 2008, vb wrote:
> I am trying to control the amcc glacier (evkit460gt) eval board with a
> BDI3000, using the config file from
> ftp://78.31.64.234/bdigdb/config/powerpc/ppc4xx/ppc440/evkit460gt.cfg
> (modulo my local IP/tftp configuration).

I attached my local version for you. Perhaps this works better. It works here 
fine on my Glacier.

> The problem is that the board fails to run under the BDI control, and
> runs just fine without it.
>
> When looking closer I see that the bdi resets the board properly and
> takes it all the way to the point where the TLBs are set and the rfi
> instruction is executed to jump out of the original 4k window. At this
> point a TLB exception is thrown, that is it loos like TLB programming
> 'did not take' while under BDI control. So, if I just reset the board
> and let it run, it keeps cycling through TLB error exception as no
> memory other than the top 4k bytes is accessible. Again, it works just
> fine without the BDI.
>
> Any hints and suggestions will be highly appreciated,

What command are you using to "control" the PPC? "reset halt" will run you 
initialization from the script and halt the PPC. "reset run" will skip this 
init and give just run the PPC (hopefully to the U-Boot prompt).

Best regards,
Stefan

=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80  Email: office at denx.de
=====================================================================
-------------- next part --------------
; bdiGDB configuration file for AMCC 460GT Evaluation Kit "Glacier"
; -----------------------------------------------------------------
;
;
[INIT]
; Setup TLB
WTLB    0xF0000095  0x4F00003F  ;Boot Space 256MB
WTLB    0x00000094  0x0000003F  ;SDRAM 256MB @ 0x00000000
WTLB    0x90000095  0x4000003F  ;ISRAM/OCM

; Setup Peripheral Bus
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
WDCR    0x12    0x00000010      ;Select EBC0_B0AP
WDCR    0x13    0x10055e00
WDCR    0x12    0x00000000      ;Select EBC0_B0CR
WDCR    0x13    0xfc0da000      ; 64MByte

; OCM
;WDCR    0x20   0x40004580      ;16k


[TARGET]
JTAGCLOCK   1                   ;use 8 MHz JTAG clock
CPUTYPE     440  		;the used target CPU type
WAKEUP      500                 ;wakeup time after reset
BREAKMODE   HARD      	        ;SOFT or HARD, HARD uses PPC hardware breakpoint
STEPMODE    HWBP                ;JTAG or HWBP, HWBP uses one or two hardware breakpoints


[HOST]
IP          10.0.0.152
FILE        /tftpboot/glacier/u-boot.bin
FORMAT      BIN
DUMP        /tftpboot/glacier/dump.bin
PROMPT      460EX>


[FLASH]
;WORKSPACE   0xe3040000  ;workspace in OCM
;WORKSPACE   0x70000000  ;workspace in OCM
;WORKSPACE   0x90040000  ;workspace in OCM
CHIPTYPE    MIRRORX16            ;Flash type
CHIPSIZE    0x1000000    ;The size of one flash chip in bytes
BUSWIDTH    16          ;The width of the flash memory bus in bits (8 | 16 | 32)
FILE        /tftpboot/glacier/u-boot.bin
;FORMAT      BIN 0xFFF80000
FORMAT      BIN 0xFFFA0000
;ERASE       0xFFF80000  ;erase sector 4
ERASE       0xFFFA0000  ;erase sector 4
ERASE       0xFFFC0000  ;erase sector 4
ERASE       0xFFFE0000  ;erase sector 6


[REGS]
FILE    /tftpboot/BDI2000/reg460ex.def

[U-Boot-Users] BDI3000 and PPC460GT board

[vb]

On Wed, Jul 9, 2008 at 11:40 AM, Stefan Roese <sr@denx.de> wrote:
> Hi Vadim,
>
> On Wednesday 09 July 2008, vb wrote:
>> I am trying to control the amcc glacier (evkit460gt) eval board with a
>> BDI3000, using the config file from
>> ftp://78.31.64.234/bdigdb/config/powerpc/ppc4xx/ppc440/evkit460gt.cfg
>> (modulo my local IP/tftp configuration).
>
> I attached my local version for you. Perhaps this works better. It works here
> fine on my Glacier.
>

Stefan, this works like a charm, thank you so much for a prompt reply!

cheers,
\vb

>> The problem is that the board fails to run under the BDI control, and
>> runs just fine without it.
>>
>> When looking closer I see that the bdi resets the board properly and
>> takes it all the way to the point where the TLBs are set and the rfi
>> instruction is executed to jump out of the original 4k window. At this
>> point a TLB exception is thrown, that is it loos like TLB programming
>> 'did not take' while under BDI control. So, if I just reset the board
>> and let it run, it keeps cycling through TLB error exception as no
>> memory other than the top 4k bytes is accessible. Again, it works just
>> fine without the BDI.
>>
>> Any hints and suggestions will be highly appreciated,
>
> What command are you using to "control" the PPC? "reset halt" will run you
> initialization from the script and halt the PPC. "reset run" will skip this
> init and give just run the PPC (hopefully to the U-Boot prompt).
>
> Best regards,
> Stefan
>
> =====================================================================
> DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
> Phone: +49-8142-66989-0 Fax: +49-8142-66989-80  Email: office at denx.de
> =====================================================================
>