227 lines
7.9 KiB
C++
227 lines
7.9 KiB
C++
/////////////////////////////////////////////////////////////////////////
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// $Id: biosdev.cc,v 1.14 2008-07-26 08:02:27 vruppert Exp $
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/////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2002 MandrakeSoft S.A.
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//
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// MandrakeSoft S.A.
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// 43, rue d'Aboukir
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// 75002 Paris - France
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// http://www.linux-mandrake.com/
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// http://www.mandrakesoft.com/
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library 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 GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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// Here are the virtual ports use to display messages from the bioses :
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//
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// 0x0400 : rombios Panic port with line number
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// 0x0401 : rombios Panic port with message, panic flag or line number
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// 0x0402 : rombios Info port with message
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// 0x0403 : rombios Debug port with message
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//
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// 0x0500 : vgabios Info port with message
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// 0x0501 : vgabios Panic port with line number
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// 0x0502 : vgabios Panic port with message, panic flag or line number
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// 0x0503 : vgabios Debug port with message
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// Define BX_PLUGGABLE in files that can be compiled into plugins. For
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// platforms that require a special tag on exported symbols, BX_PLUGGABLE
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// is used to know when we are exporting symbols and when we are importing.
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#define BX_PLUGGABLE
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#include "iodev.h"
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bx_biosdev_c *theBiosDevice = NULL;
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logfunctions *bioslog;
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logfunctions *vgabioslog;
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int libbiosdev_LTX_plugin_init(plugin_t *plugin, plugintype_t type, int argc, char *argv[])
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{
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theBiosDevice = new bx_biosdev_c();
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BX_REGISTER_DEVICE_DEVMODEL(plugin, type, theBiosDevice, BX_PLUGIN_BIOSDEV);
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return(0); // Success
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}
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void libbiosdev_LTX_plugin_fini(void)
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{
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delete theBiosDevice;
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}
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bx_biosdev_c::bx_biosdev_c(void)
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{
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bioslog = new logfunctions();
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bioslog->put("BIOS");
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bioslog->settype(BIOSLOG);
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vgabioslog = new logfunctions();
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vgabioslog->put("VBIOS");
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vgabioslog->settype(BIOSLOG);
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}
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bx_biosdev_c::~bx_biosdev_c(void)
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{
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bioslog->ldebug("Exit");
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if (bioslog != NULL) {
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delete bioslog;
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bioslog = NULL;
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}
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if (vgabioslog != NULL) {
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delete vgabioslog;
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vgabioslog = NULL;
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}
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}
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void bx_biosdev_c::init(void)
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{
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DEV_register_iowrite_handler(this, write_handler, 0x0400, "Bios Panic Port 1", 3);
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DEV_register_iowrite_handler(this, write_handler, 0x0401, "Bios Panic Port 2", 3);
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DEV_register_iowrite_handler(this, write_handler, 0x0402, "Bios Info Port", 1);
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DEV_register_iowrite_handler(this, write_handler, 0x0403, "Bios Debug Port", 1);
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DEV_register_iowrite_handler(this, write_handler, 0x0500, "VGABios Info Port", 1);
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DEV_register_iowrite_handler(this, write_handler, 0x0501, "VGABios Panic Port 1", 3);
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DEV_register_iowrite_handler(this, write_handler, 0x0502, "VGABios Panic Port 2", 3);
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DEV_register_iowrite_handler(this, write_handler, 0x0503, "VGABios Debug Port", 1);
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s.bios_message_i = 0;
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s.bios_panic_flag = 0;
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s.vgabios_message_i = 0;
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s.vgabios_panic_flag = 0;
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}
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// static IO port write callback handler
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// redirects to non-static class handler to avoid virtual functions
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void bx_biosdev_c::write_handler(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len)
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{
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#if !BX_USE_BIOS_SMF
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bx_biosdev_c *class_ptr = (bx_biosdev_c *) this_ptr;
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class_ptr->write(address, value, io_len);
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}
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void bx_biosdev_c::write(Bit32u address, Bit32u value, unsigned io_len)
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{
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#else
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UNUSED(this_ptr);
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#endif // !BX_USE_BIOS_SMF
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UNUSED(io_len);
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switch (address) {
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// 0x400-0x401 are used as panic ports for the rombios
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case 0x0401:
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if (value==0) {
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// The next message sent to the info port will cause a panic
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BX_BIOS_THIS s.bios_panic_flag = 1;
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break;
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} else if (BX_BIOS_THIS s.bios_message_i > 0) {
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// if there are bits of message in the buffer, print them as the
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// panic message. Otherwise fall into the next case.
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if (BX_BIOS_THIS s.bios_message_i >= BX_BIOS_MESSAGE_SIZE)
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BX_BIOS_THIS s.bios_message_i = BX_BIOS_MESSAGE_SIZE-1;
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BX_BIOS_THIS s.bios_message[ BX_BIOS_THIS s.bios_message_i] = 0;
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BX_BIOS_THIS s.bios_message_i = 0;
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bioslog->panic("%s", BX_BIOS_THIS s.bios_message);
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break;
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}
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case 0x0400:
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if (value > 0) {
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bioslog->panic("BIOS panic at rombios.c, line %d", value);
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}
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break;
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// 0x0402 is used as the info port for the rombios
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// 0x0403 is used as the debug port for the rombios
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case 0x0402:
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case 0x0403:
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BX_BIOS_THIS s.bios_message[BX_BIOS_THIS s.bios_message_i] =
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(Bit8u) value;
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BX_BIOS_THIS s.bios_message_i ++;
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if (BX_BIOS_THIS s.bios_message_i >= BX_BIOS_MESSAGE_SIZE) {
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BX_BIOS_THIS s.bios_message[ BX_BIOS_MESSAGE_SIZE - 1] = 0;
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BX_BIOS_THIS s.bios_message_i = 0;
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if (address==0x403)
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bioslog->ldebug("%s", BX_BIOS_THIS s.bios_message);
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else
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bioslog->info("%s", BX_BIOS_THIS s.bios_message);
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} else if ((value & 0xff) == '\n') {
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BX_BIOS_THIS s.bios_message[ BX_BIOS_THIS s.bios_message_i - 1 ] = 0;
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BX_BIOS_THIS s.bios_message_i = 0;
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if (BX_BIOS_THIS s.bios_panic_flag==1)
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bioslog->panic("%s", BX_BIOS_THIS s.bios_message);
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else if (address==0x403)
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bioslog->ldebug("%s", BX_BIOS_THIS s.bios_message);
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else
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bioslog->info("%s", BX_BIOS_THIS s.bios_message);
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BX_BIOS_THIS s.bios_panic_flag = 0;
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}
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break;
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// 0x501-0x502 are used as panic ports for the vgabios
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case 0x0502:
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if (value==0) {
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BX_BIOS_THIS s.vgabios_panic_flag = 1;
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break;
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} else if (BX_BIOS_THIS s.vgabios_message_i > 0) {
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// if there are bits of message in the buffer, print them as the
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// panic message. Otherwise fall into the next case.
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if (BX_BIOS_THIS s.vgabios_message_i >= BX_BIOS_MESSAGE_SIZE)
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BX_BIOS_THIS s.vgabios_message_i = BX_BIOS_MESSAGE_SIZE-1;
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BX_BIOS_THIS s.vgabios_message[ BX_BIOS_THIS s.vgabios_message_i] = 0;
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BX_BIOS_THIS s.vgabios_message_i = 0;
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vgabioslog->panic("%s", BX_BIOS_THIS s.vgabios_message);
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break;
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}
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case 0x0501:
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if (value > 0) {
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vgabioslog->panic("VGABIOS panic at vgabios.c, line %d", value);
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}
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break;
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// 0x0500 is used as the message port for the vgabios
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case 0x0500:
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case 0x0503:
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BX_BIOS_THIS s.vgabios_message[BX_BIOS_THIS s.vgabios_message_i] =
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(Bit8u) value;
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BX_BIOS_THIS s.vgabios_message_i ++;
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if (BX_BIOS_THIS s.vgabios_message_i >= BX_BIOS_MESSAGE_SIZE) {
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BX_BIOS_THIS s.vgabios_message[ BX_BIOS_MESSAGE_SIZE - 1] = 0;
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BX_BIOS_THIS s.vgabios_message_i = 0;
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if (address==0x503)
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vgabioslog->ldebug("%s", BX_BIOS_THIS s.vgabios_message);
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else
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vgabioslog->info("%s", BX_BIOS_THIS s.vgabios_message);
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} else if ((value & 0xff) == '\n') {
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BX_BIOS_THIS s.vgabios_message[ BX_BIOS_THIS s.vgabios_message_i - 1 ] = 0;
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BX_BIOS_THIS s.vgabios_message_i = 0;
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if (BX_BIOS_THIS s.vgabios_panic_flag==1)
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vgabioslog->panic("%s", BX_BIOS_THIS s.vgabios_message);
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else if (address==0x503)
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vgabioslog->ldebug("%s", BX_BIOS_THIS s.vgabios_message);
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else
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vgabioslog->info("%s", BX_BIOS_THIS s.vgabios_message);
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BX_BIOS_THIS s.vgabios_panic_flag = 0;
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}
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break;
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default:
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break;
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}
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}
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