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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2011 Advanced Micro Devices, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
/* Wake status package */
Name(WKST,Package(){Zero, Zero})
/*
* \_PTS - Prepare to Sleep method
*
* Entry:
* Arg0=The value of the sleeping state S1=1, S2=2, etc
*
* Exit:
* -none-
*
* The _PTS control method is executed at the beginning of the sleep process
* for S1-S5. The sleeping value is passed to the _PTS control method. This
* control method may be executed a relatively long time before entering the
* sleep state and the OS may abort the operation without notification to
* the ACPI driver. This method cannot modify the configuration or power
* state of any device in the system.
*/
Method(\_PTS, 1) {
/* DBGO("\\_PTS\n") */
/* DBGO("From S0 to S") */
/* DBGO(Arg0) */
/* DBGO("\n") */
/* Don't allow PCIRST# to reset USB */
if (LEqual(Arg0,3)){
Store(0,URRE)
}
/* Clear sleep SMI status flag and enable sleep SMI trap. */
/*Store(One, CSSM)
Store(One, SSEN)*/
/* On older chips, clear PciExpWakeDisEn */
/*if (LLessEqual(\_SB.SBRI, 0x13)) {
* Store(0,\_SB.PWDE)
*}
*/
/* Clear wake status structure. */
Store(0, Index(WKST,0))
Store(0, Index(WKST,1))
} /* End Method(\_PTS) */
/*
* \_BFS OEM Back From Sleep method
*
* Entry:
* Arg0=The value of the sleeping state S1=1, S2=2
*
* Exit:
* -none-
*/
Method(\_BFS, 1) {
/* DBGO("\\_BFS\n") */
/* DBGO("From S") */
/* DBGO(Arg0) */
/* DBGO(" to S0\n") */
}
/*
* \_WAK System Wake method
*
* Entry:
* Arg0=The value of the sleeping state S1=1, S2=2
*
* Exit:
* Return package of 2 DWords
* Dword 1 - Status
* 0x00000000 wake succeeded
* 0x00000001 Wake was signaled but failed due to lack of power
* 0x00000002 Wake was signaled but failed due to thermal condition
* Dword 2 - Power Supply state
* if non-zero the effective S-state the power supply entered
*/
Method(\_WAK, 1) {
/* DBGO("\\_WAK\n") */
/* DBGO("From S") */
/* DBGO(Arg0) */
/* DBGO(" to S0\n") */
/* Re-enable HPET */
Store(1,HPDE)
/* Restore PCIRST# so it resets USB */
if (LEqual(Arg0,3)){
Store(1,URRE)
}
/* Arbitrarily clear PciExpWakeStatus */
Store(PWST, Local1)
Store(Local1, PWST)
/* if(DeRefOf(Index(WKST,0))) {
* Store(0, Index(WKST,1))
* } else {
* Store(Arg0, Index(WKST,1))
* }
*/
Return(WKST)
} /* End Method(\_WAK) */
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