hw/i386/ssdt-proc.dsl

   1 /*
   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.
   6
   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.
  11
  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/>.
  14  */
  15
  16 /* This file is the basis for the ssdt table generated in src/acpi.c.
  17  * It defines the contents of the per-cpu Processor() object.  At
  18  * runtime, a dynamically generated SSDT will contain one copy of this
  19  * AML snippet for every possible cpu in the system.  The objects will
  20  * be placed in the \_SB_ namespace.
  21  *
  22  * In addition to the aml code generated from this file, the
  23  * src/acpi.c file creates a NTFY method with an entry for each cpu:
  24  *     Method(NTFY, 2) {
  25  *         If (LEqual(Arg0, 0x00)) { Notify(CP00, Arg1) }
  26  *         If (LEqual(Arg0, 0x01)) { Notify(CP01, Arg1) }
  27  *         ...
  28  *     }
  29  * and a CPON array with the list of active and inactive cpus:
  30  *     Name(CPON, Package() { One, One, ..., Zero, Zero, ... })
  31  */
  32
  33 ACPI_EXTRACT_ALL_CODE ssdp_proc_aml
  34
  35 DefinitionBlock ("ssdt-proc.aml", "SSDT", 0x01, "BXPC", "BXSSDT", 0x1)
  36 {
  37     ACPI_EXTRACT_PROCESSOR_START ssdt_proc_start
  38     ACPI_EXTRACT_PROCESSOR_END ssdt_proc_end
  39     ACPI_EXTRACT_PROCESSOR_STRING ssdt_proc_name
  40     Processor(CPAA, 0xAA, 0x00000000, 0x0) {
  41         ACPI_EXTRACT_NAME_BYTE_CONST ssdt_proc_id
  42         Name(ID, 0xAA)
  43 /*
  44  * The src/acpi.c code requires the above ACP_EXTRACT tags so that it can update
  45  * CPAA and 0xAA with the appropriate CPU id (see
  46  * SD_OFFSET_CPUHEX/CPUID1/CPUID2).  Don't change the above without
  47  * also updating the C code.
  48  */
  49         Name(_HID, "ACPI0007")
  50         External(CPMA, MethodObj)
  51         External(CPST, MethodObj)
  52         External(CPEJ, MethodObj)
  53         Method(_MAT, 0) {
  54             Return (CPMA(ID))
  55         }
  56         Method(_STA, 0) {
  57             Return (CPST(ID))
  58         }
  59         Method(_EJ0, 1, NotSerialized) {
  60             CPEJ(ID, Arg0)
  61         }
  62     }
  63 }