[U-Boot-Users] Question about MPC8272 HRCW
raymond_yang95134 at yahoo.com
Tue Jun 21 05:51:35 CEST 2005
I am confused about the followin fields in HRCW,
0 MSR[IP]=1 (default), Exceptions are vectored to the
physical address 0xfffn_nnnn
1 MSR[IP]=0, Exceptions are vectored to the physical
Boot memory space. Defines the initial value for
BR0[BA]. There are two possible bootmemory regions,
HIMEM and LOMEM
0 0xFE00_0000 -- 0xFFFF_FFFF
1 0x0000_0000 -- 0x1FFF_FFFF
1) Given BMS = 0
Does this mean, the FLASH(on CS0) are given the base
address as 0xFE00_0000?
2) Given CIP = 0
Does this meman, the vector should be placed at
So With BMS=0, and CIP=0, my flash should be bigger
0xFFFn_nnnn - 0xFE00_00000 >16M, right?
3) Given my flash is 8M byte, 16bit-bus-width, is it a
valid HRCW word for 08_82_32_45
My image got the following configurations
CFG_FLASH_BASE = 0XFE800000
I tried many times, with BDI plugged, u-boot works
However, without BDI and RSTCN pull-up, looks like the
image never got run.
Any ideas? Thanks ahead.
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