| /* |
| * 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 <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/sr5650/cmn.h> |
| #include "chip.h" |
| |
| #define SMBUS_IO_BASE 0x6000 |
| |
| uint64_t uma_memory_base, uma_memory_size; |
| |
| void set_pcie_reset(void); |
| void set_pcie_dereset(void); |
| u8 is_dev3_present(void); |
| |
| /* 780 board use this function*/ |
| u8 is_dev3_present(void) |
| { |
| return 0; |
| } |
| |
| /* |
| * TODO: Add the routine info of each PCIE_RESET_L. |
| * TODO: Add the reset of each PCIE_RESET_L. |
| * PCIE_RESET_GPIO1 -> Slot 0 |
| * PCIE_RESET_GPIO2 -> On-board NIC Bcm5709 |
| * PCIE_RESET_GPIO3 -> TMS |
| * PCIE_RESET_GPIO4 -> Slot 1 |
| * PCIE_RESET_GPIO5 -> Slot 2 |
| ***/ |
| void set_pcie_reset(void) |
| { |
| device_t pcie_core_dev; |
| |
| pcie_core_dev = dev_find_slot(0, PCI_DEVFN(0, 0)); |
| set_htiu_enable_bits(pcie_core_dev, 0xA8, 0xFFFFFFFF, 0x28282828); |
| set_htiu_enable_bits(pcie_core_dev, 0xA9, 0x000000FF, 0x00000028); |
| } |
| |
| void set_pcie_dereset(void) |
| { |
| device_t pcie_core_dev; |
| |
| pcie_core_dev = dev_find_slot(0, PCI_DEVFN(0, 0)); |
| set_htiu_enable_bits(pcie_core_dev, 0xA8, 0xFFFFFFFF, 0x6F6F6F6F); |
| set_htiu_enable_bits(pcie_core_dev, 0xA9, 0x000000FF, 0x0000006F); |
| } |
| |
| /************************************************* |
| * enable the dedicated function in h8scm board. |
| * This function called early than sr5650_enable. |
| *************************************************/ |
| static void h8scm_enable(device_t dev) |
| { |
| /* Leave it for furture use. */ |
| /* struct mainboard_config *mainboard = |
| (struct mainboard_config *)dev->chip_info; */ |
| |
| printk(BIOS_INFO, "Mainboard H8SCM Enable. dev=0x%p\n", dev); |
| |
| 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); |
| #if (CONFIG_GFXUMA == 1) |
| |
| /* refer to UMA Size Consideration in 780 BDG. */ |
| 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; |
| } |
| #else |
| /* TODO: TOP_MEM2 */ |
| uma_memory_size = 0;//0x8000000; /* 128M recommended UMA */ |
| #endif |
| 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); |
| |
| set_pcie_dereset(); |
| /* get_ide_dma66(); */ |
| } |
| |
| 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("AMD H8SCM Mainboard") |
| .enable_dev = h8scm_enable, |
| }; |