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/*
* 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 <device/device.h>
#include <arch/io.h>
#include <arch/interrupt.h>
#include <delay.h>
#if CONFIG_PCI_OPTION_ROM_RUN_YABEL
#include <x86emu/x86emu.h>
#endif
#include <ec/acpi/ec.h>
#include "m3885.h"
#define DUMP_RUNTIME_REGISTERS 0
static void backlight_enable(void)
{
#if 0
// Disabled, don't let the X9511 burn out
int i;
/* P56 is Brightness Up, and it needs a Pulse instead of a
* Level
*/
for (i=0; i < 28; i++) {
//m3885_gpio(M3885_GPIO_PULSE|M3885_GPIO_SET|M3885_GPIO_P56);
m3885_gpio(M3885_GPIO_PULSE|M3885_GPIO_TOGGLE|M3885_GPIO_P56);
}
#endif
printk(BIOS_DEBUG, "Display I/O: 0x%02x\n", inb(0x60f));
}
#if CONFIG_PCI_OPTION_ROM_RUN_YABEL
static int int15_handler(void)
{
u8 display_id;
#define BOOT_DISPLAY_DEFAULT 0
#define BOOT_DISPLAY_CRT (1 << 0)
#define BOOT_DISPLAY_TV (1 << 1)
#define BOOT_DISPLAY_EFP (1 << 2)
#define BOOT_DISPLAY_LCD (1 << 3)
#define BOOT_DISPLAY_CRT2 (1 << 4)
#define BOOT_DISPLAY_TV2 (1 << 5)
#define BOOT_DISPLAY_EFP2 (1 << 6)
#define BOOT_DISPLAY_LCD2 (1 << 7)
printk(BIOS_DEBUG, "%s: AX=%04x BX=%04x CX=%04x DX=%04x\n",
__func__, M.x86.R_AX, M.x86.R_BX, M.x86.R_CX, M.x86.R_DX);
switch (M.x86.R_AX) {
case 0x5f35: /* Boot Display */
M.x86.R_AX = 0x005f; // Success
M.x86.R_CL = BOOT_DISPLAY_DEFAULT;
break;
case 0x5f40: /* Boot Panel Type */
/* LCD panel type is SIO GPIO40-43 */
// display_id = inb(0x60f) & 0x0f;
display_id = 3;
// M.x86.R_AX = 0x015f; // Supported but failed
M.x86.R_AX = 0x005f; // Success
M.x86.R_CL = display_id;
break;
default:
/* Interrupt was not handled */
return 0;
}
/* Interrupt handled */
return 1;
}
#endif
#if CONFIG_PCI_OPTION_ROM_RUN_REALMODE
static int int15_handler(struct eregs *regs)
{
int res = 0;
/* This int15 handler is Intel IGD. specific. Other chipsets need other
* handlers. The right way to do this is to move this handler code into
* the mainboard or northbridge code.
* TODO: completely move to mainboards / chipsets.
*/
switch (regs->eax & 0xffff) {
/* And now Intel IGD code */
#define BOOT_DISPLAY_DEFAULT 0
#define BOOT_DISPLAY_CRT (1 << 0)
#define BOOT_DISPLAY_TV (1 << 1)
#define BOOT_DISPLAY_EFP (1 << 2)
#define BOOT_DISPLAY_LCD (1 << 3)
#define BOOT_DISPLAY_CRT2 (1 << 4)
#define BOOT_DISPLAY_TV2 (1 << 5)
#define BOOT_DISPLAY_EFP2 (1 << 6)
#define BOOT_DISPLAY_LCD2 (1 << 7)
case 0x5f35:
regs->eax = 0x5f;
regs->ecx = BOOT_DISPLAY_DEFAULT;
res = 1;
break;
case 0x5f40:
regs->eax = 0x5f;
regs->ecx = 3; // This is mainboard specific
printk(BIOS_DEBUG, "DISPLAY=%x\n", regs->ecx);
res = 1;
break;
default:
printk(BIOS_DEBUG, "Unknown INT15 function %04x!\n",
regs->eax & 0xffff);
}
return res;
}
#endif
#if DUMP_RUNTIME_REGISTERS
static void dump_runtime_registers(void)
{
int i;
printk(BIOS_DEBUG, "SuperIO runtime register block:\n");
for (i=0; i<0x10; i++)
printk(BIOS_DEBUG, "%02x ", i);
printk(BIOS_DEBUG, "\n");
for (i=0; i<0x10; i++)
printk(BIOS_DEBUG, "%02x ", inb(0x600 +i));
printk(BIOS_DEBUG, "\n");
}
#endif
static void mainboard_enable(device_t dev)
{
/* Configure the MultiKey controller */
// m3885_configure_multikey();
/* Enable LCD Backlight */
backlight_enable();
/* Disable Dummy DCC -> GP45 = 1 */
outb(inb(0x60f) | (1 << 5), 0x60f);
#if CONFIG_PCI_OPTION_ROM_RUN_YABEL || CONFIG_PCI_OPTION_ROM_RUN_REALMODE
/* Install custom int15 handler for VGA OPROM */
mainboard_interrupt_handlers(0x15, &int15_handler);
#endif
#if DUMP_RUNTIME_REGISTERS
dump_runtime_registers();
#endif
}
struct chip_operations mainboard_ops = {
.enable_dev = mainboard_enable,
};
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