RE: [PATCH/2.6.17-rc4 1/10] Powerpc: Add general support for mpc7 448h pc2 (Taiga) platform

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I had hoped to get the pci configure base address by ioremap, but 
failed. the tsi108 register locates at 0xc000,0000 

~0xC001,0000. It is 

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OK to access them by ioremap. While pci configure access need to 
ioremap 0xfb00,0000 ~0xfc00,0000. I traced my code, when I 

do ioremap, 

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there is no bat match, I get the virtual address from 

ioremap_bot. the 

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init ioremap_bot is 0xfe000000. When I do tsi108_csr_vir_base = 
ioremap(0xfb000000,0x1000000), the ioremap_bot is 

0xfdffe000 ( I get 

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the serial port ioremap steal some space), tsi108_csr_vir_base = 
0xfdfee000, I can not access the configure space with this address.

What happens if you try ?

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While if I use bat0 or bat1 to map my tsi108 register space, the 
ioremap_bot will keep to 0xfe000000 until I do 

tsi108_csr_vir_base = 

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ioremap(0xfb000000,0x1000000) then I get  tsi108_csr_vir_base = 
0xfd000000. Everything is OK.

Both should work fine

Ben.

The smallest BAT size of 74xx is 128KB, but the MPC7448_HPC2_NVRAM_SIZE
Is 0x8000 (32KB) you set in your code. I suggest you set the
MPC7448_HPC2_NVRAM_SIZE is 0x20000, try it.

Dave