diff options
Diffstat (limited to 'src/mainboard/technexion/tim5690/vgabios.c')
-rw-r--r-- | src/mainboard/technexion/tim5690/vgabios.c | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/src/mainboard/technexion/tim5690/vgabios.c b/src/mainboard/technexion/tim5690/vgabios.c new file mode 100644 index 0000000000..45b11ae41c --- /dev/null +++ b/src/mainboard/technexion/tim5690/vgabios.c @@ -0,0 +1,77 @@ +/* + * 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. + * + * 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 <stdint.h> +#include <stdlib.h> +#include <console/console.h> +#include <arch/interrupt.h> +#include "vgabios.h" + + +int tim5690_int15_handler(struct eregs *regs); + +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(struct eregs *regs) +{ + int res = -1; + + printk(BIOS_DEBUG, "tim5690_int15_handler\n"); + + switch (regs->eax & 0xffff) { + case AMD_RS690_INT15: + switch (regs->ebx & 0xff) { + case 0x00: + regs->eax &= ~(0xff); + regs->ebx = (regs->ebx & ~(0xff)) | vbios_regs_local.int15_regs.fun00_panel_id; + res = 0; + break; + case 0x05: + regs->eax &= ~(0xff); + regs->ebx = (regs->ebx & ~(0xff)) | vbios_regs_local.int15_regs.fun05_tv_standard; + res = 0; + break; + } + break; + default: + printk(BIOS_DEBUG, "Unknown INT15 function %04x!\n", + regs->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); +} |