]> Joshua Wise's Git repositories - netwatch.git/blob - tools/poke-rls-asm.S
Add PCI bus probe and enumeration routines.
[netwatch.git] / tools / poke-rls-asm.S
1 .global poke
2 poke:
3         # Preload registers: $0x1BADD00D
4         mov $0x1BADD00D, %ecx
5
6         # Parameter: I/O port to set bit 2 of
7         mov 4(%esp), %edx
8         inl %dx, %eax
9         or $4, %eax
10         outl %eax, %dx
11
12         # Maybe SMM poked something?
13         mov %ecx, %eax
14         ret
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