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soc/intel/cannonlake: Add cpu.asl file 

This patch adds the cpu.asl file in cnl. We are only defining
the PNOT method here in this patch as this is needed by the
ec/google/chromeec/acpi/ec.asl file for the AC methods.

TEST= code compiles and boots when we include the ec.asl file.

Change-Id: Id93012833fac116d4d7514aa2d0b8493d2f666a9
Signed-off-by: Shaunak Saha <shaunak.saha@intel.com>
Reviewed-on: https://review.coreboot.org/22365
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Sumeet R Pawnikar <sumeet.r.pawnikar@intel.com>
This commit is contained in:
Shaunak Saha 2017-11-07 09:07:30 -08:00 committed by Aaron Durbin
parent 91b80416b7
commit c6518b2712
1 changed files with 43 additions and 0 deletions
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43
src/soc/intel/cannonlake/acpi/cpu.asl Normal file
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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2017 Google 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.
*/
/* These devices are created at runtime */
External (\_PR.CP00, DeviceObj)
External (\_PR.CP01, DeviceObj)
External (\_PR.CP02, DeviceObj)
External (\_PR.CP03, DeviceObj)
External (\_PR.CP04, DeviceObj)
External (\_PR.CP05, DeviceObj)
External (\_PR.CP06, DeviceObj)
External (\_PR.CP07, DeviceObj)
/* Notify OS to re-read CPU tables, assuming ^2 CPU count */
Method (PNOT)
{
If (LGreaterEqual (\PCNT, 2)) {
Notify (\_PR.CP00, 0x81) // _CST
Notify (\_PR.CP01, 0x81) // _CST
}
If (LGreaterEqual (\PCNT, 4)) {
Notify (\_PR.CP02, 0x81) // _CST
Notify (\_PR.CP03, 0x81) // _CST
}
If (LGreaterEqual (\PCNT, 8)) {
Notify (\_PR.CP04, 0x81) // _CST
Notify (\_PR.CP05, 0x81) // _CST
Notify (\_PR.CP06, 0x81) // _CST
Notify (\_PR.CP07, 0x81) // _CST
}
}