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authorTimothy Pearson <tpearson@raptorengineeringinc.com>2015-06-08 19:35:06 -0500
committerRonald G. Minnich <rminnich@gmail.com>2015-11-11 18:45:14 +0100
commit83abd81c8acb3a53dfc125e248d9e5fd58f3e0f7 (patch)
treeca0652a1421652f4eb8b4af358f66e2fc256e1db /src/include/cpu/amd
parentdd4390b6e055ef862084a5fc45b756d6fe09151d (diff)
downloadcoreboot-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/include/cpu/amd')
-rw-r--r--src/include/cpu/amd/powernow.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/include/cpu/amd/powernow.h b/src/include/cpu/amd/powernow.h
index 5f749d00b8..fc1e8635e8 100644
--- a/src/include/cpu/amd/powernow.h
+++ b/src/include/cpu/amd/powernow.h
@@ -2,6 +2,7 @@
* This file is part of the coreboot project.
*
* Copyright (C) 2009 Rudolf Marek <r.marek@assembler.cz>
+ * Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, 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
@@ -17,5 +18,6 @@
#define POWERNOW_H
void amd_generate_powernow(u32 pcontrol_blk, u8 plen, u8 onlyBSP);
+void amd_powernow_update_fadt(acpi_fadt_t * fadt);
#endif