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| author | Timothy Pearson <tpearson@raptorengineeringinc.com> | 2015-06-08 19:35:06 -0500 |
|---|---|---|
| committer | Ronald G. Minnich <rminnich@gmail.com> | 2015-11-11 18:45:14 +0100 |
| commit | 83abd81c8acb3a53dfc125e248d9e5fd58f3e0f7 (patch) | |
| tree | ca0652a1421652f4eb8b4af358f66e2fc256e1db /src/southbridge/amd/sb700/fadt.c | |
| parent | dd4390b6e055ef862084a5fc45b756d6fe09151d (diff) | |
| download | coreboot-83abd81c8acb3a53dfc125e248d9e5fd58f3e0f7.tar.xz | |
cpu/amd: Add CC6 support
This patch adds CC6 power save support to the AMD Family 15h
support code. As CC6 is a complex power saving state that
relies heavily on CPU, northbridge, and southbridge cooperation,
this patch alters significant amounts of code throughout the
tree simultaneously.
Allowing the CPU to enter CC6 allows the second level of turbo
boost to be reached, and also provides significant power savings
when the system is idle due to the complete core shutdown.
Change-Id: I44ce157cda97fb85f3e8f3d7262d4712b5410670
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: http://review.coreboot.org/11979
Tested-by: build bot (Jenkins)
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Diffstat (limited to 'src/southbridge/amd/sb700/fadt.c')
| -rw-r--r-- | src/southbridge/amd/sb700/fadt.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/southbridge/amd/sb700/fadt.c b/src/southbridge/amd/sb700/fadt.c index 7a8a1a6762..2417cebaca 100644 --- a/src/southbridge/amd/sb700/fadt.c +++ b/src/southbridge/amd/sb700/fadt.c @@ -2,6 +2,7 @@ * This file is part of the coreboot project. * * Copyright (C) 2010 Advanced Micro Devices, Inc. + * Copyright (C) 2015 Raptor Engineering * * 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 @@ -22,6 +23,7 @@ #include <arch/acpi.h> #include <arch/io.h> #include <device/device.h> +#include <cpu/amd/powernow.h> #include "sb700.h" void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt) @@ -152,5 +154,8 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt) fadt->x_gpe1_blk.addrl = 0; fadt->x_gpe1_blk.addrh = 0x0; + if (IS_ENABLED(CONFIG_CPU_AMD_MODEL_10XXX)) + amd_powernow_update_fadt(fadt); + header->checksum = acpi_checksum((void *)fadt, sizeof(acpi_fadt_t)); } |