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39 lines
521 B
39 lines
521 B
.text
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ENTRY(olpc_sleep_asm)
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olpc_sleep:
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;; Get the value of PM1_CNT and store it off
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add 08h, ax
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mov bx,dx
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in dx,eax
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or 2000h, ax
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mov ax,di
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;; flush the cache
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wbinvd
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;; GX2 must disable refresh before going into self-refresh
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mov 2000000180xh, ecx
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rdmsr
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mov eax, esi
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and 0FF0000FFh, eax
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wrmsr
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;; Now, put the memory into self refresh
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mov 2004, cx
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xor edx, edx
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xor eax, eax
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mov 04h, al
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wrmsr
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;; Thats all she wrote - time to go to sleep
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mov bx, dx
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movzx di, eax
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out eax, dx
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;;
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