diff options
Diffstat (limited to 'src/mainboard/amd/dbm690t/mainboard.c')
-rw-r--r-- | src/mainboard/amd/dbm690t/mainboard.c | 126 |
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, +}; |