Hi,
We have a number of PrPMC800 systems that are to be run in NON-MONARCH mode.
Unfortunately they hang indefinitely if I tries to do a [card] reset (full
system reset works). This means that it is impossible to use the Harrier
chip to get the board to do a proper reset.
Therefore I need some way to restart PPC7-Bug without doing a hardware
reset (in the belief that PPC7-Bug will setup the card in a useful state).
The naive attempt to do a "g fff00100" [jumping to the reset exception
handler in flash] from the PPC7-Bug prompt, of course failed miserably, and
so did my attempts to simulate a system reset by the following code:
lis r0,0xfff0 ; Flash reset vector lives at 0xfff00100
ori r0,r0,0x0100
li r9,0x40 ; Use exception prefix = 0xfffn_nnnn
mtmsr r9 ; Make msr contain exception prefix bit
mtsrr0 r0 ; Make rfi return to 0xfff00100
mtsrr1 r9 ; Make msr after rfi contain exception prefix bit
sync
rfi ; Simulate a reset
Anybody that has some good idea of what could be done?
Regards
Anders Blomdell
------------------------------------------------------------------------------
Anders Blomdell
Department of Automatic Control Email: anders.blomdell at control.lth.
se
Lund Institute of Technology Phone: +46 46 222 4625
Box 118, S-221 00 Lund, Sweden Fax: +46 46 138118
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