diff options
Diffstat (limited to 'src/mainboard/gigabyte/ma785gm/mainboard.c')
| -rw-r--r-- | src/mainboard/gigabyte/ma785gm/mainboard.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/src/mainboard/gigabyte/ma785gm/mainboard.c b/src/mainboard/gigabyte/ma785gm/mainboard.c new file mode 100644 index 0000000000..97a86f6894 --- /dev/null +++ b/src/mainboard/gigabyte/ma785gm/mainboard.c @@ -0,0 +1,206 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2011 Alec Ari <neotheuser@ymail.com> + * + * 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 <boot/tables.h> +#include <cpu/x86/msr.h> +#include <cpu/amd/mtrr.h> +#include <device/pci_def.h> +#include "southbridge/amd/sb700/sb700.h" +#include "southbridge/amd/sb700/smbus.h" +#include "chip.h" + +uint64_t uma_memory_base, uma_memory_size; + +void set_pcie_dereset(void); +void set_pcie_reset(void); +int 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); +} + +/* + * dev3 does not exist on ma785gm + */ +int is_dev3_present(void) +{ + return 0; +} + +/* + * set gpio40 gfx + */ +static void set_gpio40_gfx(void) +{ + u8 byte; +// u16 word; + u32 dword; + device_t sm_dev; + /* disable the GPIO40 as CLKREQ2# function */ + byte = pm_ioread(0xd3); + byte &= ~(1 << 7); + pm_iowrite(0xd3, byte); + + /* disable the GPIO40 as CLKREQ3# function */ + byte = pm_ioread(0xd4); + byte &= ~(1 << 0); + pm_iowrite(0xd4, byte); + + /* enable pull up for GPIO68 */ + byte = pm2_ioread(0xf1); + byte &= ~(1 << 4); + pm2_iowrite(0xf1, byte); + + /* access the smbus extended register */ + sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0)); + + /* set the gfx to 1x16 lanes */ + printk(BIOS_INFO, "Dev3 is not present. GFX Configuration is One x16 slot\n"); + /* when the gpio40 is configured as GPIO, this will enable the output */ + pci_write_config32(sm_dev, 0xf8, 0x4); + dword = pci_read_config32(sm_dev, 0xfc); + dword &= ~(1 << 10); + + /* When the gpio40 is configured as GPIO, this will represent the output value*/ + /* 1 :enable two x8 , 0 : master slot enable only */ + dword &= ~(1 << 26); + pci_write_config32(sm_dev, 0xfc, dword); +} + +/************************************************* +* enable the dedicated function in ma785gm board. +* This function called early than rs780_enable. +*************************************************/ +static void ma785gm_enable(device_t dev) +{ + printk(BIOS_INFO, "Mainboard MA785GM-US2H 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_gpio40_gfx(); +} + +int add_mainboard_resources(struct lb_memory *mem) +{ + /* UMA is removed from system memory in the northbridge code, but + * in some circumstances we want the memory mentioned as reserved. + */ +#if (CONFIG_GFXUMA == 1) + printk(BIOS_INFO, "uma_memory_start=0x%llx, uma_memory_size=0x%llx \n", + uma_memory_base, uma_memory_size); + lb_add_memory_range(mem, LB_MEM_RESERVED, uma_memory_base, + uma_memory_size); +#endif + return 0; +} + +struct chip_operations mainboard_ops = { + CHIP_NAME("GIGABYTE MA785GM-US2H Mainboard") + .enable_dev = ma785gm_enable, +}; |