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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2009 coresystems GmbH
* Copyright (C) 2009 Libra Li <libra.li@technexion.com>
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*/
#include <stdint.h>
#include <stdlib.h>
#include <console/console.h>
#include <arch/interrupt.h>
#include "vgabios.h"
#include <x86emu/regs.h>
int tim5690_int15_handler(void);
static rs690_vbios_regs vbios_regs_local;
/* Initialization interrupt function */
static void vbios_fun_init(rs690_vbios_regs *vbios_regs)
{
vbios_regs_local.int15_regs.fun00_panel_id = vbios_regs->int15_regs.fun00_panel_id;
vbios_regs_local.int15_regs.fun05_tv_standard = vbios_regs->int15_regs.fun05_tv_standard;
}
/* BIOS int15 function */
int tim5690_int15_handler(void)
{
int res = 0;
printk(BIOS_DEBUG, "tim5690_int15_handler\n");
switch (X86_EAX & 0xffff) {
case AMD_RS690_INT15:
switch (X86_EBX & 0xff) {
case 0x00:
X86_EAX &= ~(0xff);
X86_EBX = (X86_EBX & ~(0xff)) | vbios_regs_local.int15_regs.fun00_panel_id;
res = 1;
break;
case 0x05:
X86_EAX &= ~(0xff);
X86_EBX = (X86_EBX & ~(0xff)) | vbios_regs_local.int15_regs.fun05_tv_standard;
res = 1;
break;
}
break;
default:
printk(BIOS_DEBUG, "Unknown INT15 function %04x!\n",
X86_EAX & 0xffff);
break;
}
return res;
}
/* Initialization VBIOS function */
void vgabios_init(rs690_vbios_regs *vbios_regs)
{
printk(BIOS_DEBUG, "vgabios_init\n");
mainboard_interrupt_handlers(0x15, &tim5690_int15_handler);
vbios_fun_init(vbios_regs);
}
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