Patch for AMD DBM690T board.

Signed-off-by:  Michael Xie <Michael.Xie@amd.com>
Reviewed-by: Marc Jones <marc.jones@amd.com>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3590 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 126 insertions, 0 deletions

diff --git a/src/mainboard/amd/dbm690t/mainboard.c b/src/mainboard/amd/dbm690t/mainboard.c
new file mode 100644
index 0000000000..d87081df8f
--- /dev/null
+++ b/src/mainboard/amd/dbm690t/mainboard.c
@@ -0,0 +1,126 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008 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 <console/console.h>
+#include <device/device.h>
+#include <arch/io.h>
+#include <boot/coreboot_tables.h>
+#include <cpu/x86/msr.h>
+#include <cpu/amd/mtrr.h>
+#include "chip.h"
+
+/********************************************************
+* dbm690t uses a BCM5789 as on-board NIC.
+* It has a pin named LOW_POWER to enable it into LOW POWER state.
+* In order to run NIC, we should let it out of Low power state. This pin
+* is controlled by sb600 GPM3.
+* RRG4.2.3 GPM as GPIO
+* GPM pins can be used as GPIO. The GPM I/O functions is controlled by three registers:
+* I/O C50, C51, C52, PM I/O94, 95, 96.
+* RRG4.2.3.1 GPM pins as Input
+* RRG4.2.3.2 GPM pins as Output
+********************************************************/
+static void enable_onboard_nic()
+{
+	u8 byte;
+
+	printk_info("enable_onboard_nic.\n");
+
+	outb(0x13, 0xC50);
+
+	byte = inb(0xC51);
+	byte &= 0x3F;
+	byte |= 0x40;
+	outb(byte, 0xC51);
+
+	byte = inb(0xC52);
+	byte &= ~0x8;
+	outb(byte, 0xC52);
+
+	byte = inb(0xC51);
+	byte &= 0x3F;
+	byte |= 0x80;		/* 7:6=10 */
+	outb(byte, 0xC51);
+
+	byte = inb(0xC52);
+	byte &= ~0x8;
+	outb(byte, 0xC52);
+}
+
+/*************************************************
+* enable the dedicated function in dbm690t board.
+* This function called early than rs690_enable.
+*************************************************/
+void dbm690t_enable(device_t dev)
+{
+	struct mainboard_amd_dbm690t_config *mainboard =
+	    (struct mainboard_amd_dbm690t_config *)dev->chip_info;
+
+#if (CONFIG_GFXUMA == 1)
+	msr_t msr, msr2;
+
+	/* TOP_MEM: the top of DRAM below 4G */
+	msr = rdmsr(TOP_MEM);
+	printk_info("dbm690t_enable, TOP MEM: msr.lo = 0x%08x, msr.hi = 0x%08x\n", msr.lo, msr.hi);
+
+	/* TOP_MEM2: the top of DRAM above 4G */
+	msr2 = rdmsr(TOP_MEM2);
+	printk_info("dbm690t_enable, TOP MEM2: msr2.lo = 0x%08x, msr2.hi = 0x%08x\n", msr2.lo, msr2.hi);
+
+	switch (msr.lo) {
+		case 0x10000000: /* 256M system memory */
+			uma_memory_size = 0x2000000; /* 32M recommended UMA */
+			break;
+
+		case 0x18000000: /* 384M system memory */
+			uma_memory_size = 0x4000000; /* 64M recommended UMA */
+			break;
+
+		case 0x20000000: /* 512M system memory */
+			uma_memory_size = 0x4000000; /* 64M recommended UMA */
+			break;
+
+		default: /* 1GB and above system memory */
+			uma_memory_size = 0x8000000; /* 128M recommended UMA */
+			break;
+	}
+
+	uma_memory_start = msr.lo - uma_memory_size;/* TOP_MEM1 */
+	printk_info("dbm690t_enable: uma size 0x%08x, memory start 0x%08x\n", uma_memory_size, uma_memory_start);
+
+	/* TODO: TOP_MEM2 */
+#else
+	uma_memory_size = 0x8000000; /* 128M recommended UMA */
+	uma_memory_start = 0x38000000; /* 1GB  system memory supposed */
+#endif
+
+	printk_info("dbm690t_enable. dev=0x%x\n", dev);
+
+	enable_onboard_nic();
+}
+
+/*
+* CONFIG_CHIP_NAME defined in Option.lb.
+*/
+struct chip_operations mainboard_amd_dbm690t_ops = {
+#if CONFIG_CHIP_NAME == 1
+	CHIP_NAME("AMD Dbm690t   Mainboard")
+#endif
+	.enable_dev = dbm690t_enable,
+};