[coreboot] the seabios reboot in the post process
lostdays_15 at hotmail.com
Wed Mar 4 11:15:21 CET 2009
When I use the seabios as the payload, I got a strange issue.
In the seabios flow:
when run the inb_cmos, it will reboot on the inb operation.
inb_cmos disassemables to fllowing:
out 0x70, value
in value, 0x71. ----> run here to make the reboot happen.
0x70 is the CMOS index port, 0x71 is the CMOS data port.
I suspect the "in value, 0x71" operation causes a exception and the seabios doesn't have real IDT, so it then make the reboot.
but why it cause the exception is a question for me?
since IO port 0x70 also reponsible for the NMI enble/disable, is it caused the error?
any one has some comments?
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