| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2009 One Laptop per Child, Association, 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 |
| */ |
| |
| /* Note: Some of the VGA control registers are located on the memory controller. |
| Registers are set both in raminit.c and northbridge.c */ |
| |
| #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 <bitops.h> |
| #include <cpu/cpu.h> |
| #include <cpu/x86/mtrr.h> |
| #include <cpu/x86/msr.h> |
| #include <arch/interrupt.h> |
| #if CONFIG_PCI_OPTION_ROM_RUN_REALMODE |
| #include <devices/oprom/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 |
| |
| /* !!FIXME!! These were CONFIG_ options. Fix it in uma_ram_setting.c too. */ |
| #define VIACONFIG_VGA_PCI_10 0xf8000008 |
| #define VIACONFIG_VGA_PCI_14 0xfc000000 |
| |
| static int via_vx800_int15_handler(struct eregs *regs) |
| { |
| int res=-1; |
| printk(BIOS_DEBUG, "via_vx800_int15_handler\n"); |
| switch(regs->eax & 0xffff) { |
| case 0x5f19: |
| regs->eax=0x5f; |
| regs->ecx=0x03; |
| res=0; |
| break; |
| case 0x5f18: |
| { |
| /* |
| * BL Bit[7:4] |
| * Memory Data Rate |
| * 0000: 66MHz |
| * 0001: 100MHz |
| * 0010: 133MHz |
| * 0011: 200MHz ( DDR200 ) |
| * 0100: 266MHz ( DDR266 ) |
| * 0101: 333MHz ( DDR333 ) |
| * 0110: 400MHz ( DDR400 ) |
| * 0111: 533MHz ( DDR I/II 533 |
| * 1000: 667MHz ( DDR I/II 667) |
| * Bit[3:0] |
| * N: Frame Buffer Size 2^N MB |
| */ |
| u8 i; |
| device_t dev; |
| dev = dev_find_slot(0, PCI_DEVFN(0, 3)); |
| i = pci_read_config8(dev, 0xa1); |
| i = (i & 0x70); |
| i = i >> 4; |
| if (i == 0) { |
| regs->eax = 0x00; //not support 5f18 |
| break; |
| } |
| i = i + 2; |
| regs->ebx = (u32) i; |
| i = pci_read_config8(dev, 0x90); |
| i = (i & 0x07); |
| i = i + 3; |
| i = i << 4; |
| regs->ebx = regs->ebx + ((u32) i); |
| regs->eax = 0x5f; |
| res = 0; |
| break; |
| } |
| case 0x5f00: |
| regs->eax = 0x005f; |
| res = 0; |
| break; |
| case 0x5f01: |
| regs->eax = 0x5f; |
| regs->ecx = (regs->ecx & 0xffffff00 ) | 2; // panel type = 2 = 1024 * 768 |
| res = 0; |
| break; |
| case 0x5f02: |
| regs->eax=0x5f; |
| regs->ebx= (regs->ebx & 0xffff0000) | 2; |
| regs->ecx= (regs->ecx & 0xffff0000) | 0x401; // PAL + crt only |
| regs->edx= (regs->edx & 0xffff0000) | 0; // TV Layout - default |
| res=0; |
| break; |
| case 0x5f0f: |
| regs->eax = 0x005f; |
| res = 0; |
| break; |
| default: |
| printk(BIOS_DEBUG, "Unknown INT15 function %04x!\n", |
| regs->eax & 0xffff); |
| regs->eax = 0; |
| break; |
| } |
| return res; |
| } |
| |
| #ifdef UNUSED_CODE |
| static void write_protect_vgabios(void) |
| { |
| device_t dev; |
| |
| printk(BIOS_INFO, "write_protect_vgabios\n"); |
| /* there are two possible devices. Just do both. */ |
| dev = dev_find_device(PCI_VENDOR_ID_VIA, |
| PCI_DEVICE_ID_VIA_VX855_MEMCTRL, 0); |
| if (dev) |
| pci_write_config8(dev, 0x80, 0xff); |
| /*vx855 no th 0x61 reg */ |
| /*dev = dev_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VX855_VLINK, 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 |
| } |
| |
| extern u8 acpi_sleep_type; |
| static void vga_init(device_t dev) |
| { |
| uint8_t reg8; |
| |
| mainboard_interrupt_handlers(0x15, &via_vx800_int15_handler); |
| |
| //A20 OPEN |
| reg8 = inb(0x92); |
| reg8 = reg8 | 2; |
| outb(reg8, 0x92); |
| |
| //* |
| //pci_write_config8(dev, 0x04, 0x07); |
| //pci_write_config32(dev,0x10, 0xa0000008); |
| //pci_write_config32(dev,0x14, 0xdd000000); |
| pci_write_config32(dev, 0x10, VIACONFIG_VGA_PCI_10); |
| pci_write_config32(dev, 0x14, VIACONFIG_VGA_PCI_14); |
| pci_write_config8(dev, 0x3c, 0x0a); //same with vx855_lpc.c |
| //*/ |
| |
| printk(BIOS_DEBUG, "Initializing VGA...\n"); |
| |
| pci_dev_init(dev); |
| |
| printk(BIOS_DEBUG, "Enable VGA console\n"); |
| vga_enable_console(); |
| |
| if ((acpi_sleep_type == 3)/* || (PAYLOAD_IS_SEABIOS == 0)*/) { |
| /* 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); |
| |
| #if 0 |
| /* Set framebuffer size to CONFIG_VIDEO_MB mb */ |
| reg8 = (CONFIG_VIDEO_MB/4); |
| outb(0x39, SR_INDEX); |
| outb(reg8, SR_DATA); |
| #endif |
| } |
| } |
| |
| 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 = PCI_DEVICE_ID_VIA_VX855_VGA, |
| }; |