From 4d8aac501d7e9acb258ee24781f1e33a0104c1eb Mon Sep 17 00:00:00 2001
From: Arthur Heymans <arthur@hp7600>
Date: Fri, 13 May 2016 22:21:17 -0400
Subject: enable c4 state on t60

this is identical to the patch enabling c4 state on x60
---
(limited to 'resources')

diff --git a/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t60/0001-t60-enable-c4-and-new-style-to-_CST-table.patch b/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t60/0001-t60-enable-c4-and-new-style-to-_CST-table.patch
new file mode 100644
index 0000000..f0bb468
--- /dev/null
+++ b/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t60/0001-t60-enable-c4-and-new-style-to-_CST-table.patch
@@ -0,0 +1,70 @@
+From a6a582cfbcca2814deac138693ad1fb9c5165eb6 Mon Sep 17 00:00:00 2001
+From: Arthur Heymans <arthur@aheymans.xyz>
+Date: Sat, 14 May 2016 04:17:14 +0200
+Subject: [PATCH] t60: enable c4 and new style to _CST table
+
+this change is identical to the x60 change in
+mainboard.c
+
+TEST= Build and boot platform. See if there is a state4
+in /sys/devices/system/cpu/cpu0/cpuidle/
+
+Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
+---
+ src/mainboard/lenovo/t60/mainboard.c | 39 +++++++++++++++++++++++++++++++++---
+ 1 file changed, 36 insertions(+), 3 deletions(-)
+
+diff --git a/src/mainboard/lenovo/t60/mainboard.c b/src/mainboard/lenovo/t60/mainboard.c
+index 44fa402..4a444ed 100644
+--- a/src/mainboard/lenovo/t60/mainboard.c
++++ b/src/mainboard/lenovo/t60/mainboard.c
+@@ -34,10 +34,43 @@
+ #include <drivers/intel/gma/int15.h>
+ #define PANEL INT15_5F35_CL_DISPLAY_DEFAULT
+ 
++#define MWAIT_RES(state, sub_state)                         \
++	{                                                   \
++	  .space_id = ACPI_ADDRESS_SPACE_FIXED,		    \
++	  .bit_width = ACPI_FFIXEDHW_VENDOR_INTEL,          \
++	  .bit_offset = ACPI_FFIXEDHW_CLASS_MWAIT,          \
++	  {						    \
++		  .resv = 0,				    \
++	  },						    \
++	  .addrl = (((state) << 4) | (sub_state)),          \
++	  .addrh = 0,                                       \
++	}
++
+ static acpi_cstate_t cst_entries[] = {
+-	{ 1,  1, 1000, { 0x7f, 1, 2, { 0 }, 1, 0 } },
+-	{ 2,  1,  500, { 0x01, 8, 0, { 0 }, DEFAULT_PMBASE + LV2, 0 } },
+-	{ 2, 17,  250, { 0x01, 8, 0, { 0 }, DEFAULT_PMBASE + LV3, 0 } },
++	{
++		.ctype = 1,
++		.latency = 1,
++		.power = 1000,
++		.resource = MWAIT_RES(0, 0),
++	},
++	{
++		.ctype = 2,
++		.latency = 1,
++		.power = 500,
++		.resource = MWAIT_RES(1, 0),
++	},
++	{
++		.ctype = 3,
++		.latency = 17,
++		.power = 250,
++		.resource = MWAIT_RES(2, 0),
++	},
++	{
++		.ctype = 3,
++		.latency = 34,
++		.power = 200,
++		.resource = MWAIT_RES(3, 0),
++	},
+ };
+ 
+ int get_cst_entries(acpi_cstate_t **entries)
+-- 
+2.8.2
+
--
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