[U-Boot] [HELP]PCIX problem on MPC8547 in uboot

[hank peng]

I have a self-designed board which is based on MPC8548PC demo board,
but CPU is MPC8547E.
I configured PCI to PCI-X 64bits asynchrous mode, 100MHz, and there
were two SATA controllers connected directly to BUS #0.
U-boot version is 1.1.4 which is previouly for MPC8548PC demo board, I
have modified some code for my board.
After power on, uboot can print some information, when it comes to PCI
bus scan, CPU died. The messages is like this:
U-Boot 1.1.4 (Apr 13 2009 - 19:42:42)

CPU:   8547_E, Version: 2.0, (0x80390120)
Core:  e500v2, Version: 2.0, (0x80210020)
Clock Configuration:
       CPU: 999 MHz, CCB: 399 MHz,
       DDR: 199 MHz, LBC:  24 MHz
L1:    D-cache 32 kB enabled
       I-cache 32 kB enabled

Board: MPC85xx Processor Card Rev. A.
       -- Boot Flash is U30

SerDes Interface is enabled
PEX :  X8 2.5Gbps, Root Complex
PCI1:  64 bit, async, Host
PCI2:  disabled
I2C:   ready
DRAM:  Initializing
..init ECC from 10000000 to 10000100
SDRAM test phase 1:
SDRAM test phase 2:
SDRAM test passed.
DDR:   512 MB
Top of RAM usable for U-Boot at: 20000000
Reserving 180k for U-Boot at: 1ffd0000
Reserving 136k for malloc() at: 1ffae000
Reserving 80 Bytes for Board Info at: 1ffadfb0
Reserving 48 Bytes for Global Data at: 1ffadf80
Stack Pointer at: 1ffadf68
New Stack Pointer is: 1ffadf68
Now running in RAM - U-Boot at: 1ffd0000
FLASH: flash_get_size: man id = 0100
flash_get_size: device id1 = 7e22
flash_get_size: device id2 = 2122
flash_get_size: device id3 = 0122
flash_get_size: flash id = 00700000
flash_get_size: man id = 0100
flash_get_size: device id1 = 7e22
flash_get_size: device id2 = 2122
flash_get_size: device id3 = 0122
flash_get_size: flash id = 00700000
flash_protect ON: from 0xFFF80000 to 0xFFFA85FF
protect on 124
protect on 125
flash_protect ON: from 0xFFF60000 to 0xFFF7FFFF
protect on 123
32 MB
L2 cache 512KB: enabled
PORPLLSR   = 0x00c54018
PORBMSR    = 0x86370000
PORIMPSCR  = 0x0003007f
PORDEVSR   = 0x023aea61
DEVDISR    = 0x500c0000
Do you want to skip PCI initialization?(y/n, 5 seconds left): Init
PCI1 in pci_mpc85xx_init ...
after pci_set_region
after pci_setup_indirect
Outbound register1 has been initilized
Outbound register2 has been initilized
Inbound register has been initilized
Register hose
1: reg16 = 0x00000004
2: reg16 = 0x00000106
In pci_mpc85xx_init: vendor = 0x00001057
In pci_mpc85xx_init: device = 0x00000018
Clear non-reserved bits in status register
bridge = 0x00000000
PCIX init...: PCIX_COMMAND = 0x00000030
PCIX_STATUS = 0x1fff98b8
Done!
To get last bus number:
pciauto_config_init: ENTER
Middle
PCI Autoconfig: Memory region: [80000000-8fffffff]
PCI Autoconfig: I/O region: [e2000000-e27fffff]
pciauto_config_init: EXIT
pci_hose_scan_bus: ENTER
<cpu died>

Interestingly, when I confiured PCI to PCI 32bits mode, uboot can run normally.
I have doubt whether this version of uboot code support PCIX mode, if
so where should I do to support PCIX mode?




-- 
The simplest is not all best but the best is surely the simplest!