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/*
* 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 "chip.h"
#include "northbridge.h"
#include "vgachip.h"
/* 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
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); */
}
extern u8 acpi_sleep_type;
static void vga_init(device_t dev)
{
uint8_t reg8;
print_debug("Initiailizing VGA...\n");
u8 tmp8;
//A20 OPEN
tmp8 = inb(0x92);
tmp8 = tmp8 | 2;
outb(tmp8, 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_EMERG, "file '%s', line %d\n\n", __FILE__, __LINE__);
#if 1
printk(BIOS_DEBUG, "INSTALL REAL-MODE IDT\n");
setup_realmode_idt();
printk(BIOS_DEBUG, "DO THE VGA BIOS\n");
do_vgabios();
if ((acpi_sleep_type == 3)/* || (PAYLOAD_IS_SEABIOS == 0)*/) {
printk(BIOS_DEBUG, "Enable VGA console\n");
// remove this function since in cn700 it is said "VGA seems to work without this, but crash & burn with it"
//but the existense of vga_enable_console() seems do not hurt my coreboot. XP+ubuntu s3 can resume with and without this function.
//and remove it also do not help my s3 problem: desktop screen have some thin black line, after resuming back to win.
vga_enable_console();
}
#else
/* Attempt to manually force the rom to load */
printk(BIOS_DEBUG, "Forcing rom load\r\n");
pci_rom_load(dev, 0xfff80000);
run_bios(dev, 0xc0000);
#endif
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);
/* Set framebuffer size to CONFIG_VIDEO_MB mb */
/*reg8 = (CONFIG_VIDEO_MB/4);
outb(0x39, SR_INDEX);
outb(reg8, SR_DATA); */
}
printk(BIOS_EMERG, "file '%s', line %d\n\n", __FILE__, __LINE__);
}
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,
};
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