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ARM1176 boot code issue
Offline
sathishpkumar sathishpkumar
over 7 years ago
Note: This was originally posted on 5th June 2009 at http://forums.arm.com
Hi
I got an issue while writing the ARM1176 bootcode.
I used DCI 0xE1600071 instruction to switch from secure priviliged mode to monitor mode.
After ARM executed this instruction , tarmac.log file is not updated i.e., ARM is not switching to monitor mode but r14_mon and spsr_mon is updated
please let me know what could be the issue
Thanks,
Sathish
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sathishpkumar sathishpkumar
over 7 years ago
Note: This was originally posted on 5th June 2009 at
http://forums.arm.com
hi isogen
yeah i programmed monitor vector base address to 0x20
so when arm executes SMI instruction, it has to jump to 0x28(base address + exception handler)
but it is not happening .
even arm in not in infinite loop as u said..
in my case ARM is not executing any instruction after this..
one more question.. why we need to program the stack of the monitor mode before executing SMI??
--
Sathish
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Offline
sathishpkumar sathishpkumar
over 7 years ago
Note: This was originally posted on 5th June 2009 at
http://forums.arm.com
hi isogen
yeah i programmed monitor vector base address to 0x20
so when arm executes SMI instruction, it has to jump to 0x28(base address + exception handler)
but it is not happening .
even arm in not in infinite loop as u said..
in my case ARM is not executing any instruction after this..
one more question.. why we need to program the stack of the monitor mode before executing SMI??
--
Sathish
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