| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2007-2009 coresystems GmbH |
| * |
| * 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 <arch/io.h> |
| #include <stdint.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <cpu/cpu.h> |
| #include <cpu/x86/mtrr.h> |
| #include <cpu/x86/msr.h> |
| #include <arch/interrupt.h> |
| #include "registers.h" |
| #include <x86emu/regs.h> |
| #if CONFIG_PCI_OPTION_ROM_RUN_REALMODE |
| #include <device/oprom/realmode/x86.h> |
| #endif |
| |
| /* PCI Domain 1 Device 0 Function 0 */ |
| |
| #define SR_INDEX 0x3c4 |
| #define SR_DATA 0x3c5 |
| #define CRTM_INDEX 0x3b4 |
| #define CRTM_DATA 0x3b5 |
| #define CRTC_INDEX 0x3d4 |
| #define CRTC_DATA 0x3d5 |
| |
| static int via_cx700_int15_handler(void) |
| { |
| int res=0; |
| u8 mem_speed; |
| |
| #define MEMORY_SPEED_66MHZ (0 << 4) |
| #define MEMORY_SPEED_100MHZ (1 << 4) |
| #define MEMORY_SPEED_133MHZ (1 << 4) |
| #define MEMORY_SPEED_200MHZ (3 << 4) // DDR200 |
| #define MEMORY_SPEED_266MHZ (4 << 4) // DDR266 |
| #define MEMORY_SPEED_333MHZ (5 << 4) // DDR333 |
| #define MEMORY_SPEED_400MHZ (6 << 4) // DDR400 |
| #define MEMORY_SPEED_533MHZ (7 << 4) // DDR533 |
| #define MEMORY_SPEED_667MHZ (8 << 4) // DDR667 |
| |
| const u8 memory_mapping[6] = { |
| MEMORY_SPEED_200MHZ, MEMORY_SPEED_266MHZ, |
| MEMORY_SPEED_333MHZ, MEMORY_SPEED_400MHZ, |
| MEMORY_SPEED_533MHZ, MEMORY_SPEED_667MHZ |
| }; |
| |
| printk(BIOS_DEBUG, "via_cx700_int15_handler\n"); |
| |
| switch(X86_EAX & 0xffff) { |
| case 0x5f00: /* VGA POST Initialization Signal */ |
| X86_EAX = (X86_EAX & 0xffff0000 ) | 0x5f; |
| res = 1; |
| break; |
| |
| case 0x5f01: /* Software Panel Type Configuration */ |
| X86_EAX = (X86_EAX & 0xffff0000 ) | 0x5f; |
| // panel type = 2 = 1024 * 768 |
| X86_ECX = (X86_ECX & 0xffffff00 ) | 2; |
| res = 1; |
| break; |
| |
| case 0x5f27: /* Boot Device Selection */ |
| X86_EAX = (X86_EAX & 0xffff0000 ) | 0x5f; |
| |
| X86_EBX = 0x00000000; // 0 -> default |
| X86_ECX = 0x00000000; // 0 -> default |
| // TV Layout - default |
| X86_EDX = (X86_EDX & 0xffffff00) | 0; |
| res=1; |
| break; |
| |
| case 0x5f0b: /* Get Expansion Setting */ |
| X86_EAX = (X86_EAX & 0xffff0000 ) | 0x5f; |
| |
| X86_ECX = X86_ECX & 0xffffff00; // non-expansion |
| // regs->ecx = regs->ecx & 0xffffff00 | 1; // expansion |
| res=1; |
| break; |
| |
| case 0x5f0f: /* VGA Post Completion */ |
| X86_EAX = (X86_EAX & 0xffff0000 ) | 0x5f; |
| res=1; |
| break; |
| |
| case 0x5f18: |
| X86_EAX = (X86_EAX & 0xffff0000 ) | 0x5f; |
| #define UMA_SIZE_8MB (3 << 0) |
| #define UMA_SIZE_16MB (4 << 0) |
| #define UMA_SIZE_32MB (5 << 0) |
| |
| X86_EBX = (X86_EBX & 0xffff0000 ) | MEMORY_SPEED_533MHZ | UMA_SIZE_32MB; |
| |
| mem_speed = pci_read_config8(dev_find_slot(0, PCI_DEVFN(0, 4)), SCRATCH_DRAM_FREQ); |
| if (mem_speed > 5) |
| mem_speed = 5; |
| |
| X86_EBX |= memory_mapping[mem_speed]; |
| |
| res=1; |
| break; |
| |
| default: |
| printk(BIOS_DEBUG, "Unknown INT15 function %04x!\n", |
| X86_EAX & 0xffff); |
| break; |
| } |
| return res; |
| } |
| |
| #ifdef UNUSED_CODE |
| static void write_protect_vgabios(void) |
| { |
| device_t dev; |
| |
| printk(BIOS_DEBUG, "write_protect_vgabios\n"); |
| |
| dev = dev_find_device(PCI_VENDOR_ID_VIA, 0x3324, 0); |
| if (dev) |
| pci_write_config8(dev, 0x80, 0xff); |
| |
| dev = dev_find_device(PCI_VENDOR_ID_VIA, 0x7324, 0); |
| if (dev) |
| pci_write_config8(dev, 0x61, 0xff); |
| } |
| #endif |
| |
| static void vga_enable_console(void) |
| { |
| #if CONFIG_PCI_OPTION_ROM_RUN_REALMODE |
| /* Call VGA BIOS int10 function 0x4f14 to enable main console |
| * Epia-M does not always autosense the main console so forcing |
| * it on is good. |
| */ |
| |
| /* int#, EAX, EBX, ECX, EDX, ESI, EDI */ |
| realmode_interrupt(0x10, 0x4f14, 0x8003, 0x0001, 0x0000, 0x0000, 0x0000); |
| #endif |
| } |
| |
| static void vga_init(device_t dev) |
| { |
| u8 reg8; |
| |
| mainboard_interrupt_handlers(0x15, &via_cx700_int15_handler); |
| |
| //* |
| pci_write_config8(dev, 0x04, 0x07); |
| pci_write_config8(dev, 0x3e, 0x02); |
| pci_write_config8(dev, 0x0d, 0x40); |
| pci_write_config32(dev, 0x10, 0xa0000008); |
| pci_write_config32(dev, 0x14, 0xdd000000); |
| pci_write_config8(dev, 0x3c, 0x0b); |
| //*/ |
| |
| printk(BIOS_DEBUG, "Initializing VGA...\n"); |
| |
| pci_dev_init(dev); |
| |
| if (pci_read_config32(dev, PCI_ROM_ADDRESS) != 0xc0000) return; |
| |
| printk(BIOS_DEBUG, "Enable VGA console\n"); |
| vga_enable_console(); |
| |
| /* It's not clear if these need to be programmed before or after |
| * the VGA bios runs. Try both, clean up later */ |
| /* Set memory rate to 200MHz */ |
| outb(0x3d, CRTM_INDEX); |
| reg8 = inb(CRTM_DATA); |
| reg8 &= 0x0f; |
| reg8 |= (0x3 << 4); |
| outb(0x3d, CRTM_INDEX); |
| outb(reg8, CRTM_DATA); |
| |
| /* Set framebuffer size to 32mb */ |
| reg8 = (32 / 4); |
| outb(0x39, SR_INDEX); |
| outb(reg8, SR_DATA); |
| } |
| |
| static struct device_operations vga_operations = { |
| .read_resources = pci_dev_read_resources, |
| .set_resources = pci_dev_set_resources, |
| .enable_resources = pci_dev_enable_resources, |
| .init = vga_init, |
| .ops_pci = 0, |
| }; |
| |
| static const struct pci_driver vga_driver __pci_driver = { |
| .ops = &vga_operations, |
| .vendor = PCI_VENDOR_ID_VIA, |
| .device = 0x3157, |
| }; |