069f4766a0
Because we had no stack on romcc boards, we had a separate, not as powerful clone of printk: print_*. Back in the day, like more than half a decade ago, we migrated a lot of boards to printk, but we never cleaned up the existing code to be consistent. instead, we worked around the problem with a very messy console.h (nowadays the mess is hidden in romstage_console.c and early_print.h) This patch cleans up the mainboard code to use printk() on all non-ROMCC boards. Change-Id: I2383f24343fc2041fef4af65d717d754ad58425e Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-on: http://review.coreboot.org/8111 Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Tested-by: build bot (Jenkins)
112 lines
2.7 KiB
C
112 lines
2.7 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2011 Alexandru Gagniuc <mr.nuke.me@gmail.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <device/device.h>
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#include <device/pci_def.h>
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#include <device/pci_ops.h>
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#include <console/console.h>
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#if CONFIG_VGA_ROM_RUN
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#include <arch/interrupt.h>
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#include <x86emu/x86emu.h>
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#include <northbridge/via/vx900/vx900.h>
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static int vx900_int15_handler(void)
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{
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int res;
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printk(BIOS_DEBUG, "%s %0x\n", __func__, X86_AX & 0xffff);
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/* Set AX return value here so we don't set it every time. Just set it
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* to something else if the callback is unsupported */
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res = -1;
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switch (X86_AX & 0xffff) {
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#if 0
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case 0x5f01:
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/* VGA POST - panel type */
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/* FIXME: Don't hardcode panel type */
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/* Panel Type Number */
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X86_CX = 0;
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res = 0;
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break;
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case 0x5f02:
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{
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/* Boot device selection */
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X86_BL = INT15_5F02_BL_HWOPT_CRTCONN;
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/* FIXME: or 0 ? */
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X86_BH = 0; // INT15_5F02_BH_TV_CONN_DEFAULT;
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X86_EBX = 0; // INT15_5F02_EBX_HDTV_RGB;
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X86_ECX = INT15_5F02_ECX_DISPLAY_CRT;
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//X86_ECX |= INT15_5F02_ECX_TV_MODE_RGB;
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//X86_ECX |= INT15_5F02_ECX_HDTV_1080P;
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X86_DL = INT15_5F02_DL_TV_LAYOUT_DEFAULT;
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res = 0;
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break;
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}
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#endif
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case 0x5f18:
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X86_BL = vx900_int15_get_5f18_bl();
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res = 0;
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break;
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#if 0
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case 0x5f2a:
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/* Get SSC Control Settings */
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/* FIXME: No idea what this does. Just disable this feature
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* for now */
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X86_CX = INT15_5F2A_CX_SSC_ENABLE;
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res = 0;
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break;
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case 0x5f2b:
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/* Engine clock setting */
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/* FIXME: ECLK fixed 250MHz ? */
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X86_EBX = INT15_5F2B_EBX_ECLK_250MHZ;
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break;
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#endif
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default:
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printk(BIOS_DEBUG, "Unsupported INT15 call %04x!\n",
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X86_AX & 0xffff);
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X86_AX = 0;
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res = -1;
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break;
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}
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if (res == 0)
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X86_AX = 0x5f;
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else
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X86_AX = 0;
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return X86_AX;
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}
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#endif
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static void mainboard_enable(device_t dev)
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{
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(void)dev;
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#if CONFIG_VGA_ROM_RUN
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printk(BIOS_DEBUG, "Installing INT15 handler...\n");
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mainboard_interrupt_handlers(0x15, &vx900_int15_handler);
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#endif
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}
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struct chip_operations mainboard_ops = {
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CHIP_NAME("VIA EPIA-M850 Mainboard")
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.enable_dev = mainboard_enable,
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};
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