hi,all
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. In u-boot, 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
