2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
12 * You should have received a copy of the GNU General Public License along
13 * with this program; if not, see <http://www.gnu.org/licenses/>.
16 /****************************************************************
18 ****************************************************************/
21 /* Objects filled in by run-time generated SSDT */
22 External(NTFY, MethodObj)
23 External(CPON, PkgObj)
25 /* Methods called by run-time generated SSDT Processor objects */
26 Method(CPMA, 1, NotSerialized) {
27 // _MAT method - create an madt apic buffer
28 // Arg0 = Processor ID = Local APIC ID
29 // Local0 = CPON flag for this cpu
30 Store(DerefOf(Index(CPON, Arg0)), Local0)
31 // Local1 = Buffer (in madt apic form) to return
32 Store(Buffer(8) {0x00, 0x08, 0x00, 0x00, 0x00, 0, 0, 0}, Local1)
33 // Update the processor id, lapic id, and enable/disable status
34 Store(Arg0, Index(Local1, 2))
35 Store(Arg0, Index(Local1, 3))
36 Store(Local0, Index(Local1, 4))
39 Method(CPST, 1, NotSerialized) {
40 // _STA method - return ON status of cpu
41 // Arg0 = Processor ID = Local APIC ID
42 // Local0 = CPON flag for this cpu
43 Store(DerefOf(Index(CPON, Arg0)), Local0)
50 Method(CPEJ, 2, NotSerialized) {
51 // _EJ0 method - eject callback
55 /* CPU hotplug notify method */
56 OperationRegion(PRST, SystemIO, 0xaf00, 32)
57 Field(PRST, ByteAcc, NoLock, Preserve) {
61 // Local5 = active cpu bitmap
63 // Local2 = last read byte from bitmap
65 // Local0 = Processor ID / APIC ID iterator
67 While (LLess(Local0, SizeOf(CPON))) {
68 // Local1 = CPON flag for this cpu
69 Store(DerefOf(Index(CPON, Local0)), Local1)
70 If (And(Local0, 0x07)) {
71 // Shift down previously read bitmap byte
72 ShiftRight(Local2, 1, Local2)
74 // Read next byte from cpu bitmap
75 Store(DerefOf(Index(Local5, ShiftRight(Local0, 3))), Local2)
77 // Local3 = active state for this cpu
78 Store(And(Local2, 1), Local3)
80 If (LNotEqual(Local1, Local3)) {
81 // State change - update CPON with new state
82 Store(Local3, Index(CPON, Local0))
84 If (LEqual(Local3, 1)) {