sandy/ivybridge: Native raminit.

Based on damo22's work and my X230 tracing.

Works for my X230 in a variety of RAM configs.

Also-By: Damien Zammit <damien@zamaudio.com>
Change-Id: I1aa024c55a8416fc53b25e7123037df0e55a2769
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Signed-off-by: Damien Zammit <damien@zamaudio.com>
Reviewed-on: http://review.coreboot.org/5786
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>

1 files changed, 70 insertions, 0 deletions

diff --git a/src/southbridge/intel/bd82x6x/early_thermal.c b/src/southbridge/intel/bd82x6x/early_thermal.c
new file mode 100644
index 0000000000..02ec9a7436
--- /dev/null
+++ b/src/southbridge/intel/bd82x6x/early_thermal.c
@@ -0,0 +1,70 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Vladimir Serbinenko
+ *
+ * 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 the Free Software Foundation; version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <arch/io.h>
+#include "pch.h"
+#include "cpu/intel/model_206ax/model_206ax.h"
+#include <cpu/x86/msr.h>
+
+/* Early thermal init, must be done prior to giving ME its memory
+   which is done at the end of raminit.  */
+void early_thermal_init(void)
+{
+	device_t dev;
+	msr_t msr;
+
+	dev = PCI_DEV(0x0, 0x1f, 0x6);
+
+	/* Program address for temporary BAR.  */
+	pci_write_config32(dev, 0x40, 0x40000000);
+	pci_write_config32(dev, 0x44, 0x0);
+
+	/* Activate temporary BAR.  */
+	pci_write_config32(dev, 0x40,
+			   pci_read_config32(dev, 0x40) | 5);
+
+
+	write16 (0x40000004, 0x3a2b);
+	write8 (0x4000000c, 0xff);
+	write8 (0x4000000d, 0x00);
+	write8 (0x4000000e, 0x40);
+	write8 (0x40000082, 0x00);
+	write8 (0x40000001, 0xba);
+
+	/* Perform init.  */
+	/* Configure TJmax.  */
+	msr = rdmsr(MSR_TEMPERATURE_TARGET);
+	write16(0x40000012, ((msr.lo >> 16) & 0xff) << 6);
+	/* Northbridge temperature slope and offset.  */
+	write16(0x40000016, 0x808c);
+
+	write16 (0x40000014, 0xde87);
+
+	/* Enable thermal data reporting, processor, PCH and northbridge.  */
+	write16(0x4000001a, (read16(0x4000001a) & ~0xf) | 0x10f0);
+
+	/* Disable temporary BAR.  */
+	pci_write_config32(dev, 0x40,
+			   pci_read_config32(dev, 0x40) & ~1);
+	pci_write_config32(dev, 0x40, 0);
+
+	write32 (DEFAULT_RCBA | 0x38b0,
+		 (read32 (DEFAULT_RCBA | 0x38b0) & 0xffff8003) | 0x403c);
+}