From 6f2caa0ffac653ae7455040429f70f71e9f38ccc Mon Sep 17 00:00:00 2001
From: Timothy Pearson <tpearson@raptorengineeringinc.com>
Date: Fri, 23 Jan 2015 20:24:30 -0600
Subject: northbridge/amd: Add Kconfig options for ECC scrub rate

Change-Id: Icbbba0037c19bdc279813e51c72f54a10e4dc55a
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: http://review.coreboot.org/8263
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)
---
 src/northbridge/amd/Kconfig                  | 33 +++++++++++++++++++
 src/northbridge/amd/amdmct/wrappers/mcti_d.c | 49 +++++++++++++++-------------
 2 files changed, 59 insertions(+), 23 deletions(-)

(limited to 'src/northbridge')

diff --git a/src/northbridge/amd/Kconfig b/src/northbridge/amd/Kconfig
index e9b3796398..ef8a16a73c 100644
--- a/src/northbridge/amd/Kconfig
+++ b/src/northbridge/amd/Kconfig
@@ -98,4 +98,37 @@ config LIMIT_HT_UP_WIDTH_16
 	bool "16 bits"
 endchoice
 
+config AMDMCT_BACKGROUND_SCRUB_RATE
+	hex
+	depends on CPU_AMD_MODEL_10XXX
+	default 0x00
+	help
+	  This option sets the background ECC memory scub rate
+
+	  Permissible values are:
+
+	  0x00;	Disabled
+	  0x01;	40ns
+	  0x02;	80ns
+	  0x03;	160ns
+	  0x04;	320ns
+	  0x05;	640ns
+	  0x06;	1.28us
+	  0x07;	2.56us
+	  0x08;	5.12us
+	  0x09;	10.2us
+	  0x0a;	20.5us
+	  0x0b;	41us
+	  0x0c;	81.9us
+	  0x0d;	163.8us
+	  0x0e;	327.7us
+	  0x0f;	655.4us
+	  0x10;	1.31ms
+	  0x11;	2.62ms
+	  0x12;	5.24ms
+	  0x13;	10.49ms
+	  0x14;	20.97sms
+	  0x15;	42ms
+	  0x16;	84ms
+
 endmenu
diff --git a/src/northbridge/amd/amdmct/wrappers/mcti_d.c b/src/northbridge/amd/amdmct/wrappers/mcti_d.c
index e127322dc3..96cef4e206 100644
--- a/src/northbridge/amd/amdmct/wrappers/mcti_d.c
+++ b/src/northbridge/amd/amdmct/wrappers/mcti_d.c
@@ -171,29 +171,32 @@ static u16 mctGet_NVbits(u8 index)
 		//val = 1;	/* Enable */
 		break;
 	case NV_DramBKScrub:
-		val = 0x00;	/* Disabled */
-		//val = 0x01;	/* 40ns */
-		//val = 0x02;	/* 80ns */
-		//val = 0x03;	/* 160ns */
-		//val = 0x04;	/* 320ns */
-		//val = 0x05;	/* 640ns */
-		//val = 0x06;	/* 1.28us */
-		//val = 0x07;	/* 2.56us */
-		//val = 0x08;	/* 5.12us */
-		//val = 0x09;	/* 10.2us */
-		//val = 0x0a;	/* 20.5us */
-		//val = 0x0b;	/* 41us */
-		//val = 0x0c;	/* 81.9us */
-		//val = 0x0d;	/* 163.8us */
-		//val = 0x0e;	/* 327.7us */
-		//val = 0x0f;	/* 655.4us */
-		//val = 0x10;	/* 1.31ms */
-		//val = 0x11;	/* 2.62ms */
-		//val = 0x12;	/* 5.24ms */
-		//val = 0x13;	/* 10.49ms */
-		//val = 0x14;	/* 20.97sms */
-		//val = 0x15;	/* 42ms */
-		//val = 0x16;	/* 84ms */
+		/*
+		 * 0x00: Disabled
+		 * 0x01: 40ns
+		 * 0x02: 80ns
+		 * 0x03: 160ns
+		 * 0x04: 320ns
+		 * 0x05: 640ns
+		 * 0x06: 1.28us
+		 * 0x07: 2.56us
+		 * 0x08: 5.12us
+		 * 0x09: 10.2us
+		 * 0x0a: 20.5us
+		 * 0x0b: 41us
+		 * 0x0c: 81.9us
+		 * 0x0d: 163.8us
+		 * 0x0e: 327.7us
+		 * 0x0f: 655.4us
+		 * 0x10: 1.31ms
+		 * 0x11: 2.62ms
+		 * 0x12: 5.24ms
+		 * 0x13: 10.49ms
+		 * 0x14: 20.97sms
+		 * 0x15: 42ms
+		 * 0x16: 84ms
+		 */
+		val = CONFIG_AMDMCT_BACKGROUND_SCRUB_RATE;
 		break;
 	case NV_L2BKScrub:
 		val = 0;	/* Disabled - See L2Scrub in BKDG */
-- 
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