Add support for Asus M4A785-M.
Signed-off-by: Juhana Helovuo <juhe@iki.fi>
Acked-by: Myles Watson <mylesgw@gmail.com>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5809 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
diff --git a/src/mainboard/asus/m4a785-m/mainboard.c b/src/mainboard/asus/m4a785-m/mainboard.c
new file mode 100644
index 0000000..6c7a0dc
--- /dev/null
+++ b/src/mainboard/asus/m4a785-m/mainboard.c
@@ -0,0 +1,281 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2010 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 <device/pci.h>
+#include <arch/io.h>
+#include <cpu/x86/msr.h>
+#include <cpu/amd/mtrr.h>
+#include <device/pci_def.h>
+#include <southbridge/amd/sb700/sb700.h>
+#include "chip.h"
+
+#define ADT7461_ADDRESS 0x4C
+#define ARA_ADDRESS 0x0C /* Alert Response Address */
+
+extern int do_smbus_read_byte(u32 smbus_io_base, u32 device, u32 address);
+extern int do_smbus_write_byte(u32 smbus_io_base, u32 device, u32 address,
+ u8 val);
+
+#define ADT7461_read_byte(address) \
+ do_smbus_read_byte(SMBUS_IO_BASE, ADT7461_ADDRESS, address)
+#define ARA_read_byte(address) \
+ do_smbus_read_byte(SMBUS_IO_BASE, ARA_ADDRESS, address)
+#define ADT7461_write_byte(address, val) \
+ do_smbus_write_byte(SMBUS_IO_BASE, ADT7461_ADDRESS, address, val)
+
+#define SMBUS_IO_BASE 0x6000
+
+uint64_t uma_memory_base, uma_memory_size;
+
+void set_pcie_dereset(void);
+void set_pcie_reset(void);
+u8 is_dev3_present(void);
+
+void set_pcie_dereset()
+{
+ u8 byte;
+ u16 word;
+ device_t sm_dev;
+ /* set 0 to bit1 :disable GPM9 as SLP_S2 output */
+ /* set 0 to bit2 :disable GPM8 as AZ_RST output */
+ byte = pm_ioread(0x8d);
+ byte &= ~((1 << 1) | (1 << 2));
+ pm_iowrite(0x8d, byte);
+
+ /* set the GPM8 and GPM9 output enable and the value to 1 */
+ byte = pm_ioread(0x94);
+ byte &= ~((1 << 2) | (1 << 3));
+ byte |= ((1 << 0) | (1 << 1));
+ pm_iowrite(0x94, byte);
+
+ /* set the GPIO65 output enable and the value is 1 */
+ sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0));
+ word = pci_read_config16(sm_dev, 0x7e);
+ word |= (1 << 0);
+ word &= ~(1 << 4);
+ pci_write_config16(sm_dev, 0x7e, word);
+}
+
+void set_pcie_reset()
+{
+ u8 byte;
+ u16 word;
+ device_t sm_dev;
+
+ /* set 0 to bit1 :disable GPM9 as SLP_S2 output */
+ /* set 0 to bit2 :disable GPM8 as AZ_RST output */
+ byte = pm_ioread(0x8d);
+ byte &= ~((1 << 1) | (1 << 2));
+ pm_iowrite(0x8d, byte);
+
+ /* set the GPM8 and GPM9 output enable and the value to 0 */
+ byte = pm_ioread(0x94);
+ byte &= ~((1 << 2) | (1 << 3));
+ byte &= ~((1 << 0) | (1 << 1));
+ pm_iowrite(0x94, byte);
+
+ /* set the GPIO65 output enable and the value is 0 */
+ sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0));
+ word = pci_read_config16(sm_dev, 0x7e);
+ word &= ~(1 << 0);
+ word &= ~(1 << 4);
+ pci_write_config16(sm_dev, 0x7e, word);
+}
+
+#if 0 /* TODO: */
+/********************************************************
+* tilapia uses SB700 GPIO8 to detect IDE_DMA66.
+* IDE_DMA66 is routed to GPIO 8. So we read Gpio 8 to
+* get the cable type, 40 pin or 80 pin?
+********************************************************/
+static void get_ide_dma66(void)
+{
+ u8 byte;
+ /*u32 sm_dev, ide_dev; */
+ device_t sm_dev, ide_dev;
+
+ sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0));
+
+ byte = pci_read_config8(sm_dev, 0xA9);
+ byte |= (1 << 4); /* Set Gpio8 as input */
+ pci_write_config8(sm_dev, 0xA9, byte);
+
+ ide_dev = dev_find_slot(0, PCI_DEVFN(0x14, 1));
+ byte = pci_read_config8(ide_dev, 0x56);
+ byte &= ~(7 << 0);
+ if ((1 << 4) & pci_read_config8(sm_dev, 0xAA))
+ byte |= 2 << 0; /* mode 2 */
+ else
+ byte |= 5 << 0; /* mode 5 */
+ pci_write_config8(ide_dev, 0x56, byte);
+}
+#endif
+
+/*
+ * justify the dev3 is exist or not
+ * NOTE: This just copied from AMD Tilapia code.
+ * It is completly unknown it it will work at all for Asus M4A785-A
+ */
+u8 is_dev3_present(void)
+{
+ u16 word;
+ device_t sm_dev;
+
+ /* access the smbus extended register */
+ sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0));
+
+ /* put the GPIO68 output to tristate */
+ word = pci_read_config16(sm_dev, 0x7e);
+ word |= 1 << 6;
+ pci_write_config16(sm_dev, 0x7e,word);
+
+ /* read the GPIO68 input status */
+ word = pci_read_config16(sm_dev, 0x7e);
+
+ if(word & (1 << 10)){
+ /*not exist*/
+ return 0;
+ }else{
+ /*exist*/
+ return 1;
+ }
+}
+
+/*
+ * set thermal config
+ */
+static void set_thermal_config(void)
+{
+ u8 byte;
+ u16 word;
+ device_t sm_dev;
+
+ /* set ADT 7461 */
+ ADT7461_write_byte(0x0B, 0x50); /* Local Temperature Hight limit */
+ ADT7461_write_byte(0x0C, 0x00); /* Local Temperature Low limit */
+ ADT7461_write_byte(0x0D, 0x50); /* External Temperature Hight limit High Byte */
+ ADT7461_write_byte(0x0E, 0x00); /* External Temperature Low limit High Byte */
+
+ ADT7461_write_byte(0x19, 0x55); /* External THERM limit */
+ ADT7461_write_byte(0x20, 0x55); /* Local THERM limit */
+
+ byte = ADT7461_read_byte(0x02); /* read status register to clear it */
+ ARA_read_byte(0x05); /* A hardware alert can only be cleared by the master sending an ARA as a read command */
+ printk(BIOS_INFO, "Init adt7461 end , status 0x02 %02x\n", byte);
+
+ /* sb700 settings for thermal config */
+ /* set SB700 GPIO 64 to GPIO with pull-up */
+ byte = pm2_ioread(0x42);
+ byte &= 0x3f;
+ pm2_iowrite(0x42, byte);
+
+ /* set GPIO 64 to input */
+ sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0));
+ word = pci_read_config16(sm_dev, 0x56);
+ word |= 1 << 7;
+ pci_write_config16(sm_dev, 0x56, word);
+
+ /* set GPIO 64 internal pull-up */
+ byte = pm2_ioread(0xf0);
+ byte &= 0xee;
+ pm2_iowrite(0xf0, byte);
+
+ /* set Talert to be active low */
+ byte = pm_ioread(0x67);
+ byte &= ~(1 << 5);
+ pm_iowrite(0x67, byte);
+
+ /* set Talert to generate ACPI event */
+ byte = pm_ioread(0x3c);
+ byte &= 0xf3;
+ pm_iowrite(0x3c, byte);
+
+ /* THERMTRIP pin */
+ /* byte = pm_ioread(0x68);
+ * byte |= 1 << 3;
+ * pm_iowrite(0x68, byte);
+ *
+ * byte = pm_ioread(0x55);
+ * byte |= 1 << 0;
+ * pm_iowrite(0x55, byte);
+ *
+ * byte = pm_ioread(0x67);
+ * byte &= ~( 1 << 6);
+ * pm_iowrite(0x67, byte);
+ */
+}
+
+/*************************************************
+* enable the dedicated function in m4a785m board.
+* This function called early than rs780_enable.
+*************************************************/
+static void m4a785m_enable(device_t dev)
+{
+ printk(BIOS_INFO, "Mainboard M4A785M Enable. dev=0x%p\n", dev);
+
+#if (CONFIG_GFXUMA == 1)
+ msr_t msr, msr2;
+
+ /* TOP_MEM: the top of DRAM below 4G */
+ msr = rdmsr(TOP_MEM);
+ printk(BIOS_INFO,
+ "%s, TOP MEM: msr.lo = 0x%08x, msr.hi = 0x%08x\n",
+ __func__, msr.lo, msr.hi);
+
+ /* TOP_MEM2: the top of DRAM above 4G */
+ msr2 = rdmsr(TOP_MEM2);
+ printk(BIOS_INFO,
+ "%s, TOP MEM2: msr2.lo = 0x%08x, msr2.hi = 0x%08x\n",
+ __func__, msr2.lo, msr2.hi);
+
+ switch (msr.lo) {
+ case 0x10000000: /* 256M system memory */
+ uma_memory_size = 0x4000000; /* 64M recommended UMA */
+ break;
+
+ case 0x20000000: /* 512M system memory */
+ uma_memory_size = 0x8000000; /* 128M recommended UMA */
+ break;
+
+ default: /* 1GB and above system memory */
+ uma_memory_size = 0x10000000; /* 256M recommended UMA */
+ break;
+ }
+
+ uma_memory_base = msr.lo - uma_memory_size; /* TOP_MEM1 */
+ printk(BIOS_INFO, "%s: uma size 0x%08llx, memory start 0x%08llx\n",
+ __func__, uma_memory_size, uma_memory_base);
+
+ /* TODO: TOP_MEM2 */
+#else
+ uma_memory_size = 0x8000000; /* 128M recommended UMA */
+ uma_memory_base = 0x38000000; /* 1GB system memory supposed */
+#endif
+
+ set_pcie_dereset();
+ /* get_ide_dma66(); */
+ set_thermal_config();
+}
+
+struct chip_operations mainboard_ops = {
+ CHIP_NAME("AMD M4A785M Mainboard")
+ .enable_dev = m4a785m_enable,
+};