diff options
Diffstat (limited to 'src/mainboard/via/epia-m850/mainboard.c')
| -rw-r--r-- | src/mainboard/via/epia-m850/mainboard.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/src/mainboard/via/epia-m850/mainboard.c b/src/mainboard/via/epia-m850/mainboard.c new file mode 100644 index 0000000000..dbe682cfce --- /dev/null +++ b/src/mainboard/via/epia-m850/mainboard.c @@ -0,0 +1,111 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2011 Alexandru Gagniuc <mr.nuke.me@gmail.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, see <http://www.gnu.org/licenses/>. + */ + +#include <device/device.h> +#include <device/pci_def.h> +#include <device/pci_ops.h> +#include <console/console.h> + +#if CONFIG_VGA_ROM_RUN + +#include <arch/interrupt.h> +#include <x86emu/x86emu.h> + +#include <northbridge/via/vx900/vx900.h> + +static int vx900_int15_handler(void) +{ + int res; + + printk(BIOS_DEBUG, "%s %0x\n", __func__, X86_AX & 0xffff); + /* Set AX return value here so we don't set it every time. Just set it + * to something else if the callback is unsupported */ + res = -1; + switch (X86_AX & 0xffff) { +#if 0 + case 0x5f01: + /* VGA POST - panel type */ + /* FIXME: Don't hardcode panel type */ + /* Panel Type Number */ + X86_CX = 0; + res = 0; + break; + case 0x5f02: + { + /* Boot device selection */ + X86_BL = INT15_5F02_BL_HWOPT_CRTCONN; + /* FIXME: or 0 ? */ + X86_BH = 0; // INT15_5F02_BH_TV_CONN_DEFAULT; + X86_EBX = 0; // INT15_5F02_EBX_HDTV_RGB; + X86_ECX = INT15_5F02_ECX_DISPLAY_CRT; + //X86_ECX |= INT15_5F02_ECX_TV_MODE_RGB; + //X86_ECX |= INT15_5F02_ECX_HDTV_1080P; + X86_DL = INT15_5F02_DL_TV_LAYOUT_DEFAULT; + res = 0; + break; + } +#endif + case 0x5f18: + X86_BL = vx900_int15_get_5f18_bl(); + res = 0; + break; +#if 0 + case 0x5f2a: + /* Get SSC Control Settings */ + /* FIXME: No idea what this does. Just disable this feature + * for now */ + X86_CX = INT15_5F2A_CX_SSC_ENABLE; + res = 0; + break; + case 0x5f2b: + /* Engine clock setting */ + /* FIXME: ECLK fixed 250MHz ? */ + X86_EBX = INT15_5F2B_EBX_ECLK_250MHZ; + break; +#endif + default: + printk(BIOS_DEBUG, "Unsupported INT15 call %04x!\n", + X86_AX & 0xffff); + X86_AX = 0; + res = -1; + break; + } + + if (res == 0) + X86_AX = 0x5f; + else + X86_AX = 0; + return X86_AX; +} +#endif + +static void mainboard_enable(device_t dev) +{ + (void)dev; + +#if CONFIG_VGA_ROM_RUN + print_debug("Installing INT15 handler...\n"); + mainboard_interrupt_handlers(0x15, &vx900_int15_handler); +#endif +} + +struct chip_operations mainboard_ops = { + CHIP_NAME("VIA EPIA-M850 Mainboard") + .enable_dev = mainboard_enable, +}; |