diff options
Diffstat (limited to 'src/cpu/intel/speedstep')
| -rw-r--r-- | src/cpu/intel/speedstep/acpi.c | 13 | ||||
| -rw-r--r-- | src/cpu/intel/speedstep/acpi/cpu.asl | 31 |
2 files changed, 44 insertions, 0 deletions
diff --git a/src/cpu/intel/speedstep/acpi.c b/src/cpu/intel/speedstep/acpi.c index c154da0c29..73b7431608 100644 --- a/src/cpu/intel/speedstep/acpi.c +++ b/src/cpu/intel/speedstep/acpi.c @@ -23,6 +23,7 @@ #include <cpu/x86/msr.h> #include <cpu/intel/speedstep.h> #include <device/device.h> +#include <string.h> static int determine_total_number_of_cores(void) { @@ -164,4 +165,16 @@ void generate_cpu_entries(device_t device) /* PPKG is usually used for thermal management of the first and only package. */ acpigen_write_processor_package("PPKG", 0, cores_per_package); + + /* Add a method to notify processor nodes */ + acpigen_write_method("\\_PR.CNOT", 1); + for (coreID = 0; coreID < cores_per_package; coreID++) { + char buffer[DEVICE_PATH_MAX]; + snprintf(buffer, sizeof(buffer), "\\_PR.CP%c%c", + '0' + coreID / 10, '0' + coreID % 10); + acpigen_emit_byte(NOTIFY_OP); + acpigen_emit_namestring(buffer); + acpigen_emit_byte(ARG0_OP); + } + acpigen_pop_len(); } diff --git a/src/cpu/intel/speedstep/acpi/cpu.asl b/src/cpu/intel/speedstep/acpi/cpu.asl new file mode 100644 index 0000000000..9ff3f76727 --- /dev/null +++ b/src/cpu/intel/speedstep/acpi/cpu.asl @@ -0,0 +1,31 @@ +/* + * This file is part of the coreboot project. + * + * 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. + */ + +/* These come from the dynamically created CPU SSDT */ +External (\_PR.CNOT, MethodObj) +External (\_PR_.CP00, DeviceObj) +External (\_PR_.CP00._PPC) +External (\_PR_.CP01._PPC) + +Method (PNOT) +{ + If (MPEN) { + \_PR.CNOT (0x80) // _PPC + Sleep(100) + \_PR.CNOT (0x81) // _CST + } Else { // UP + Notify (\_PR_.CP00, 0x80) + Sleep(0x64) + Notify(\_PR_.CP00, 0x81) + } +} |