2 * This file is part of the coreboot project.
4 * Copyright (C) 2011 QingPei Wang <wangqingpei@gmail.com>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 #include <console/console.h>
21 #include <device/device.h>
22 #include <device/pci.h>
24 #include <boot/tables.h>
25 #include <cpu/x86/msr.h>
26 #include <cpu/amd/mtrr.h>
27 #include <device/pci_def.h>
28 #include "SBPLATFORM.h"
31 uint64_t uma_memory_base, uma_memory_size;
33 u8 is_dev3_present(void);
34 void set_pcie_dereset(void);
35 void set_pcie_reset(void);
36 void enable_int_gfx(void);
39 void enable_int_gfx(void)
41 volatile u8 *gpio_reg;
44 RWPMIO(SB_PMIOA_REGEA, AccWidthUint8, ~(BIT0), BIT0); /* Disable the PCIB */
45 RWPMIO(SB_PMIOA_REGF6, AccWidthuint8, ~(BIT0), BIT0); /* Disable Gec */
47 /* make sure the MMIO(fed80000) is accessible */
48 RWPMIO(SB_PMIOA_REG24, AccWidthUint8, ~(BIT0), BIT0);
50 gpio_reg = (volatile u8 *)ACPI_MMIO_BASE + 0xD00; /* IoMux Register */
52 *(gpio_reg + 0x6) = 0x1; /* Int_vga_en */
53 *(gpio_reg + 170) = 0x1; /* gpio_gate */
55 gpio_reg = (volatile u8 *)ACPI_MMIO_BASE + 0x100; /* GPIO Registers */
57 *(gpio_reg + 0x6) = 0x8;
58 *(gpio_reg + 170) = 0x0;
61 void set_pcie_dereset()
65 void set_pcie_reset(void)
69 u8 is_dev3_present(void)
75 /*************************************************
76 * enable the dedicated function in M5A88-V board.
77 * This function called early than rs780_enable.
78 *************************************************/
79 static void m5a88pm_v_enable(device_t dev)
82 printk(BIOS_INFO, "Mainboard ASUS M5A88-V Enable. dev=0x%p\n", dev);
84 #if (CONFIG_GFXUMA == 1)
87 /* TOP_MEM: the top of DRAM below 4G */
90 (BIOS_INFO, "%s, TOP MEM: msr.lo = 0x%08x, msr.hi = 0x%08x\n",
91 __func__, msr.lo, msr.hi);
93 /* TOP_MEM2: the top of DRAM above 4G */
94 msr2 = rdmsr(TOP_MEM2);
96 (BIOS_INFO, "%s, TOP MEM2: msr2.lo = 0x%08x, msr2.hi = 0x%08x\n",
97 __func__, msr2.lo, msr2.hi);
99 /* refer to UMA Size Consideration in 780 BDG. */
101 case 0x10000000: /* 256M system memory */
102 uma_memory_size = 0x4000000; /* 64M recommended UMA */
105 case 0x20000000: /* 512M system memory */
106 uma_memory_size = 0x8000000; /* 128M recommended UMA */
109 default: /* 1GB and above system memory */
110 uma_memory_size = 0x10000000; /* 256M recommended UMA */
114 uma_memory_base = msr.lo - uma_memory_size; /* TOP_MEM1 */
115 printk(BIOS_INFO, "%s: uma size 0x%08llx, memory start 0x%08llx\n",
116 __func__, uma_memory_size, uma_memory_base);
120 uma_memory_size = 0x8000000; /* 128M recommended UMA */
121 uma_memory_base = 0x38000000; /* 1GB system memory supposed */
128 int add_mainboard_resources(struct lb_memory *mem)
130 /* UMA is removed from system memory in the northbridge code, but
131 * in some circumstances we want the memory mentioned as reserved.
133 #if (CONFIG_GFXUMA == 1)
134 printk(BIOS_INFO, "uma_memory_start=0x%llx, uma_memory_size=0x%llx \n",
135 uma_memory_base, uma_memory_size);
136 lb_add_memory_range(mem, LB_MEM_RESERVED, uma_memory_base,
142 struct chip_operations mainboard_ops = {
143 CHIP_NAME("ASUS M5A88-V Mainboard")
144 .enable_dev = m5a88pm_v_enable,