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path: root/resources/libreboot/patch/kgpe-d16/0082-northbridge-amd-amdmct-mct_ddr3-Fix-Family-10h-boot-.patch
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From 3d30e829f9630d588dee70215b67343c75996520 Mon Sep 17 00:00:00 2001
From: Timothy Pearson <kb9vqf@pearsoncomputing.net>
Date: Sat, 27 Jun 2015 17:52:45 -0500
Subject: [PATCH 082/146] northbridge/amd/amdmct/mct_ddr3: Fix Family 10h boot
 failure

---
 src/northbridge/amd/amdmct/mct_ddr3/mct_d.c  |   28 +++++++++++++++++++-------
 src/northbridge/amd/amdmct/mct_ddr3/mctsrc.c |    8 +++++++-
 2 files changed, 28 insertions(+), 8 deletions(-)

diff --git a/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c b/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c
index 98a6952..6de8140 100644
--- a/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c
+++ b/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c
@@ -1622,6 +1622,11 @@ restartinit:
 		HTMemMapInit_D(pMCTstat, pDCTstatA);	/* Map local memory into system address space.*/
 		mctHookAfterHTMap();
 
+		if (!is_fam15h()) {
+			printk(BIOS_DEBUG, "mctAutoInitMCT_D: CPUMemTyping_D\n");
+			CPUMemTyping_D(pMCTstat, pDCTstatA);	/* Map dram into WB/UC CPU cacheability */
+		}
+
 		printk(BIOS_DEBUG, "mctAutoInitMCT_D: mctHookAfterCPU\n");
 		mctHookAfterCPU();			/* Setup external northbridge(s) */
 
@@ -1645,6 +1650,11 @@ restartinit:
 		printk(BIOS_DEBUG, "mctAutoInitMCT_D: DQSTiming_D\n");
 		DQSTiming_D(pMCTstat, pDCTstatA, allow_config_restore);	/* Get Receiver Enable and DQS signal timing*/
 
+		if (!is_fam15h()) {
+			printk(BIOS_DEBUG, "mctAutoInitMCT_D: UMAMemTyping_D\n");
+			UMAMemTyping_D(pMCTstat, pDCTstatA);	/* Fix up for UMA sizing */
+		}
+
 		if (!allow_config_restore) {
 			printk(BIOS_DEBUG, "mctAutoInitMCT_D: :OtherTiming\n");
 			mct_OtherTiming(pMCTstat, pDCTstatA);
@@ -1665,11 +1675,13 @@ restartinit:
 			MCTMemClr_D(pMCTstat,pDCTstatA);
 		}
 
-		printk(BIOS_DEBUG, "mctAutoInitMCT_D: CPUMemTyping_D\n");
-		CPUMemTyping_D(pMCTstat, pDCTstatA);	/* Map dram into WB/UC CPU cacheability */
+		if (is_fam15h()) {
+			printk(BIOS_DEBUG, "mctAutoInitMCT_D: CPUMemTyping_D\n");
+			CPUMemTyping_D(pMCTstat, pDCTstatA);	/* Map dram into WB/UC CPU cacheability */
 
-		printk(BIOS_DEBUG, "mctAutoInitMCT_D: UMAMemTyping_D\n");
-		UMAMemTyping_D(pMCTstat, pDCTstatA);	/* Fix up for UMA sizing */
+			printk(BIOS_DEBUG, "mctAutoInitMCT_D: UMAMemTyping_D\n");
+			UMAMemTyping_D(pMCTstat, pDCTstatA);	/* Fix up for UMA sizing */
+		}
 
 		printk(BIOS_DEBUG, "mctAutoInitMCT_D: mct_ForceNBPState0_Dis_Fam15\n");
 		for (Node = 0; Node < MAX_NODES_SUPPORTED; Node++) {
@@ -6332,11 +6344,13 @@ void ProgDramMRSReg_D(struct MCTStatStruc *pMCTstat,
 		DramMRS |= 1 << 1;
 
 	dword = Get_NB32_DCT(pDCTstat->dev_dct, dct, 0x84);
-	dword |= DramMRS;
-	if (is_fam15h())
+	if (is_fam15h()) {
+		dword |= DramMRS;
 		dword &= ~0x00800003;
-	else
+	} else {
 		dword &= ~0x00fc2f8f;
+		dword |= DramMRS;
+	}
 	Set_NB32_DCT(pDCTstat->dev_dct, dct, 0x84, dword);
 }
 
diff --git a/src/northbridge/amd/amdmct/mct_ddr3/mctsrc.c b/src/northbridge/amd/amdmct/mct_ddr3/mctsrc.c
index 039fcf8..1d41aa4 100644
--- a/src/northbridge/amd/amdmct/mct_ddr3/mctsrc.c
+++ b/src/northbridge/amd/amdmct/mct_ddr3/mctsrc.c
@@ -909,9 +909,15 @@ static void dqsTrainRcvrEn_SW_Fam10(struct MCTStatStruc *pMCTstat,
 			 * Flush the receiver FIFO
 			 * Write one full cache line of non-0x55/0xaa data to one of the test addresses, then read it back to flush the FIFO
 			 */
-			
+			/* FIXME
+			 * This does not seem to be needed, and has a tendency to lock up the
+			 * boot process while attempting to write the test pattern.
+			 */
+#if 0
+			SetUpperFSbase(TestAddr0);
 			WriteLNTestPattern(TestAddr0 << 8, (uint8_t *)TestPattern2_D, 1);
 			mct_Read1LTestPattern_D(pMCTstat, pDCTstat, TestAddr0);
+#endif
 		}
 		MaxDelay_CH[Channel] = CTLRMaxDelay;
 	}
-- 
1.7.9.5