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Annotation of qemu/roms/seabios/src/ssdt-proc.dsl, revision 1.1.1.1

1.1       root        1: /* This file is the basis for the ssdt_proc[] variable in src/acpi.c.
                      2:  * It defines the contents of the per-cpu Processor() object.  At
                      3:  * runtime, a dynamically generated SSDT will contain one copy of this
                      4:  * AML snippet for every possible cpu in the system.  The objects will
                      5:  * be placed in the \_SB_ namespace.
                      6:  *
                      7:  * To generate a new ssdt_proc[], run the commands:
                      8:  *   cpp -P src/ssdt-proc.dsl > out/ssdt-proc.dsl.i
                      9:  *   iasl -ta -p out/ssdt-proc out/ssdt-proc.dsl.i
                     10:  *   tail -c +37 < out/ssdt-proc.aml | hexdump -e '"    " 8/1 "0x%02x," "\n"'
                     11:  * and then cut-and-paste the output into the src/acpi.c ssdt_proc[]
                     12:  * array.
                     13:  *
                     14:  * In addition to the aml code generated from this file, the
                     15:  * src/acpi.c file creates a NTFY method with an entry for each cpu:
                     16:  *     Method(NTFY, 2) {
                     17:  *         If (LEqual(Arg0, 0x00)) { Notify(CP00, Arg1) }
                     18:  *         If (LEqual(Arg0, 0x01)) { Notify(CP01, Arg1) }
                     19:  *         ...
                     20:  *     }
                     21:  * and a CPON array with the list of active and inactive cpus:
                     22:  *     Name(CPON, Package() { One, One, ..., Zero, Zero, ... })
                     23:  */
                     24: DefinitionBlock ("ssdt-proc.aml", "SSDT", 0x01, "BXPC", "BXSSDT", 0x1)
                     25: /*  v------------------ DO NOT EDIT ------------------v */
                     26: {
                     27:     Processor (CPAA, 0xAA, 0x0000b010, 0x06) {
                     28:         Name (ID, 0xAA)
                     29: /*  ^------------------ DO NOT EDIT ------------------^
                     30:  *
                     31:  * The src/acpi.c code requires the above layout so that it can update
                     32:  * CPAA and 0xAA with the appropriate CPU id (see
                     33:  * SD_OFFSET_CPUHEX/CPUID1/CPUID2).  Don't change the above without
                     34:  * also updating the C code.
                     35:  */
                     36:         Name (_HID, "ACPI0007")
                     37:         External(CPMA, MethodObj)
                     38:         External(CPST, MethodObj)
                     39:         External(CPEJ, MethodObj)
                     40:         Method(_MAT, 0) {
                     41:             Return(CPMA(ID))
                     42:         }
                     43:         Method (_STA, 0) {
                     44:             Return(CPST(ID))
                     45:         }
                     46:         Method (_EJ0, 1, NotSerialized) {
                     47:             CPEJ(ID, Arg0)
                     48:         }
                     49:     }
                     50: }

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