[U-Boot] Problem with transparent PCI-PCI bridge on Canyonlands

Felix Radensky
2009-12-09T22:10:59Z

Hi, Wolfgang

Wolfgang Denk wrote:
> Dear Felix Radensky,
>
> In message <4B1FE62C.7080407@embedded-sol.com> you wrote:
>
>> I'm running latest u-boot on 1GHz Canyonlands board and have trouble
>> using 64-bit transparent PCI-PCI PLX 6254 bridge. With PLX evaluation
>> board plugged into Canyonlands PCI slot u-boot hangs. With PCI support
>>
> -----------------------------------------^^^^^^^^^^^^^
>
> Where exactly does U-Boot hang?
>
> What are the console messages you see? And which U-Boot version is
> this, and which version of the Canyonlands board?
>
>
>> disabled u-boot works fine. The PLX board is OK, it was recognized by
>> both u-boot and kernel on Freescale MPC8536DS board. On Canyonlands
>> linux-2.6.32 silently resets the board when PLX is plugged in. Any ideas
>>
> --^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>
> This is inconsistent: above you report U-Boot hangs, here you claim
> that Linux reboots?
>
>
As I said, if I disable PCI support in u-boot, it runs fine and can
start booting linux.
>> U-Boot 2009.11-rc2-00002-g386118a (Dec 09 2009 - 18:48:44)
>>
>> CPU: AMCC PowerPC 460EX Rev. A at 1000 MHz (PLB=200 OPB=100 EBC=100)
>>
> --------------------------------------^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>
> Did you try running in another configuration, like 800-nor or
> 1066-nor?
>
>
I did try 600-nor and 800-nor, but that didn't change anything. With
1066-nor
u-boot hangs earlier, the console messages show

U-Boot 2009.11-rc2-00002-g386118a (Dec 09 2009 - 18:48:44)

CPU: AMCC PowerPC 460EX Rev. A at 1066.667 MHz (PLB=266 OPB=88 EBC=88)
Security/Kasumi support
Bootstrap Option H - Boot ROM Location I2C (Addr 0x52)
Internal PCI arbiter enabled
32 kB I-Cache 32 kB D-Cache
Board: Canyonlands - AMCC PPC460EX Evaluation Board, 2*PCIe, Rev. 14
I2C: ready
DRAM: 512 MB (ECC not enabled, 533 MHz, CL4)

Felix.