AMD Thatcher Board based on trinity

Thatcher features: Family 15 trinity FP2. Hudson.
close to Parmer.
This board and parmer both need to revert the change
http://review.coreboot.org/#/c/1359/, and add thatcher's own
chip.h,otherwise the mainboard_enable can not be called.

Change-Id: I54e1cfca845fbcea1d3aad5eff08d760d0d215c9
Signed-off-by: Zheng Bao <zheng.bao@amd.com>
Signed-off-by: zbao <fishbaozi@gmail.com>
Reviewed-on: http://review.coreboot.org/1382
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

1 files changed, 166 insertions, 0 deletions

diff --git a/src/mainboard/amd/thatcher/dimmSpd.c b/src/mainboard/amd/thatcher/dimmSpd.c
new file mode 100644
index 0000000000..29d6a292aa
--- /dev/null
+++ b/src/mainboard/amd/thatcher/dimmSpd.c
@@ -0,0 +1,166 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2012 Advanced Micro Devices, Inc.
+ *
+ * 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.
+ *
+ * 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 "Porting.h"
+#include "AGESA.h"
+#include "amdlib.h"
+#include "dimmSpd.h"
+
+#define DIMENSION(array)(sizeof (array)/ sizeof (array [0]))
+
+/*#pragma optimize ("", off) // for source level debug
+ *---------------------------------------------------------------------------
+ *
+ * SPD address table - porting required
+ */
+
+static const UINT8 spdAddressLookup [2] [2] [4] =  // socket, channel, dimm
+{
+	// socket 0
+	{
+		{0xA0, 0x00},  // channel 0 dimms
+		{0xA2, 0x00},  // channel 1 dimms
+	},
+	// socket 1
+	{
+		{0x00, 0x00},  // channel 0 dimms
+		{0x00, 0x00},  // channel 1 dimms
+	},
+};
+
+/*-----------------------------------------------------------------------------
+ *
+ * readSmbusByteData - read a single SPD byte from any offset
+ */
+
+static int readSmbusByteData (int iobase, int address, char *buffer, int offset)
+{
+	unsigned int status;
+	UINT64 limit;
+
+	address |= 1; // set read bit
+
+	__outbyte (iobase + 0, 0xFF);                // clear error status
+	__outbyte (iobase + 1, 0x1F);                // clear error status
+	__outbyte (iobase + 3, offset);              // offset in eeprom
+	__outbyte (iobase + 4, address);             // slave address and read bit
+	__outbyte (iobase + 2, 0x48);                // read byte command
+
+	// time limit to avoid hanging for unexpected error status (should never happen)
+	limit = __rdtsc () + 2000000000 / 10;
+	for (;;)
+	{
+		status = __inbyte (iobase);
+		if (__rdtsc () > limit) break;
+		if ((status & 2) == 0) continue;               // SMBusInterrupt not set, keep waiting
+		if ((status & 1) == 1) continue;               // HostBusy set, keep waiting
+		break;
+	}
+
+	buffer [0] = __inbyte (iobase + 5);
+	if (status == 2) status = 0;                      // check for done with no errors
+	return status;
+}
+
+/*-----------------------------------------------------------------------------
+ *
+ * readSmbusByte - read a single SPD byte from the default offset
+ *                 this function is faster function readSmbusByteData
+ */
+
+static int readSmbusByte (int iobase, int address, char *buffer)
+{
+	unsigned int status;
+	UINT64 limit;
+
+	__outbyte (iobase + 0, 0xFF);                // clear error status
+	__outbyte (iobase + 2, 0x44);                // read command
+
+	// time limit to avoid hanging for unexpected error status
+	limit = __rdtsc () + 2000000000 / 10;
+	for (;;)
+	{
+		status = __inbyte (iobase);
+		if (__rdtsc () > limit) break;
+		if ((status & 2) == 0) continue;               // SMBusInterrupt not set, keep waiting
+		if ((status & 1) == 1) continue;               // HostBusy set, keep waiting
+		break;
+	}
+
+	buffer [0] = __inbyte (iobase + 5);
+	if (status == 2) status = 0;                      // check for done with no errors
+	return status;
+}
+
+/*---------------------------------------------------------------------------
+ *
+ * readspd - Read one or more SPD bytes from a DIMM.
+ *           Start with offset zero and read sequentially.
+ *           Optimization relies on autoincrement to avoid
+ *           sending offset for every byte.
+ *          Reads 128 bytes in 7-8 ms at 400 KHz.
+ */
+
+static int readspd (int iobase, int SmbusSlaveAddress, char *buffer, int count)
+{
+	int index, error;
+
+	/* read the first byte using offset zero */
+	error = readSmbusByteData (iobase, SmbusSlaveAddress, buffer, 0);
+	if (error) return error;
+
+	/* read the remaining bytes using auto-increment for speed */
+	for (index = 1; index < count; index++)
+	{
+		error = readSmbusByte (iobase, SmbusSlaveAddress, &buffer [index]);
+		if (error) return error;
+	}
+
+	return 0;
+}
+
+static void writePmReg (int reg, int data)
+{
+	__outbyte (0xCD6, reg);
+	__outbyte (0xCD7, data);
+}
+
+static void setupFch (int ioBase)
+{
+	writePmReg (0x2D, ioBase >> 8);
+	writePmReg (0x2C, ioBase | 1);
+	//writePmReg (0x29, 0x80);
+	//writePmReg (0x28, 0x61);
+	__outbyte (ioBase + 0x0E, 66000000 / 400000 / 4); // set SMBus clock to 400 KHz
+}
+
+AGESA_STATUS AmdMemoryReadSPD (UINT32 unused1, UINT32 unused2, AGESA_READ_SPD_PARAMS *info)
+{
+	int spdAddress, ioBase;
+
+	if (info->SocketId     >= DIMENSION (spdAddressLookup      )) return AGESA_ERROR;
+	if (info->MemChannelId >= DIMENSION (spdAddressLookup[0]   )) return AGESA_ERROR;
+	if (info->DimmId       >= DIMENSION (spdAddressLookup[0][0])) return AGESA_ERROR;
+
+	spdAddress = spdAddressLookup [info->SocketId] [info->MemChannelId] [info->DimmId];
+	if (spdAddress == 0) return AGESA_ERROR;
+	ioBase = 0xB00;
+	setupFch (ioBase);
+	return readspd (ioBase, spdAddress, (void *) info->Buffer, 128);
+}