> hi,all
>   Sorry for the previous unreadable message. I resend it.    
>   I have a problem using MPC8272 PCI bridge. Currently I am
> debugging our
> own board with a MPC8272 and PCI IDE chip (VIA VT6410).
> However I can not
> visit the memory of PCI space. When I type "md F40001F0",
> there is always a
> program check.
>       My configuration is as follows:
>
>        *      0x00000000-0x07FFFFFF   128MB   SDRAM
>        *      0x80000000-0x9FFFFFFF   512MB   outbound
> prefetchable PCI memory window
>        *      0xA0000000-0xBFFFFFFF   512MB   outbound
> non-prefetchable PCI memory
> window
>        *      0xF0000000-0xF001FFFF   128KB   MPC8272 internal memory
>        *      0xF4000000-0xF7FFFFFF    64MB   outbound PCI I/O window
>        *      0xFE000000-0xFFFFFFFF    32MB   flash
>     /* PCIBR0 */
>       #define CFG_PCI_MSTR0_LOCAL             0x80000000     
>       /* Local base */
>       #define CFG_PCIMSK0_MASK                PCIMSK_1GB     
>       /* Size of window */
>       /* PCIBR1 */
>       #define CFG_PCI_MSTR1_LOCAL             0xF4000000     
>       /* Local base */
>       #define CFG_PCIMSK1_MASK                PCIMSK_64MB    
>       /* Size of window */
>      
>     #define CFG_PCI_MSTR_IO_LOCAL       0xF4000000         
> /* Local base
> */
>       #define CFG_PCI_MSTR_IO_BUS         0xF4000000         
> /* PCI base   */
>       #define CFG_CPU_PCI_IO_START        PCI_MSTR_IO_LOCAL
>       #define CFG_PCI_MSTR_IO_SIZE        0x04000000         
> /* 64MB */
>       #define CFG_POCMR2_MASK_ATTRIB      (POCMR_MASK_64MB |
> POCMR_ENABLE |
> POCMR_PCI_IO)
> 　　
>       So, I am wondering why the configured PCI space can not
> be accessed since
> I have configured the outbound window and PCIBR? In MPC8241,
> I can access
> PCI space by "md FE0001F0".
> 　　　　　
> Best regard
> Jack liu
>

I suspect one of your base registers (BR1) overlaps the memory range that the
pci bridge is configured for.  It's probably BR1 since I believe that's normally
0xf4500000 for the BMSR on your board.  You need to change PCI I/O memory window
to some other range...

Regards,

Russell