mirror of https://github.com/dzavalishin/oskit/
126 lines
3.0 KiB
C
Executable File
126 lines
3.0 KiB
C
Executable File
/*
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* Copyright (c) 1996, 1998, 1999 University of Utah and the Flux Group.
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* All rights reserved.
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*
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* This file is part of the Flux OSKit. The OSKit is free software, also known
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* as "open source;" you can redistribute it and/or modify it under the terms
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* of the GNU General Public License (GPL), version 2, as published by the Free
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* Software Foundation (FSF). To explore alternate licensing terms, contact
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* the University of Utah at csl-dist@cs.utah.edu or +1-801-585-3271.
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*
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* The OSKit is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GPL for more details. You should have
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* received a copy of the GPL along with the OSKit; see the file COPYING. If
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* not, write to the FSF, 59 Temple Place #330, Boston, MA 02111-1307, USA.
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*/
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/*
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* Define console routines so we can use printf.
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*
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* We could probably get away with using the console code from libkern's
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* base_console.c if we consed up an argv/argc from our boothowto and
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* called base_console_init with them.
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*/
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#include <oskit/x86/pc/com_cons.h>
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#include <oskit/x86/pc/direct_cons.h>
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#include <oskit/x86/pc/base_console.h>
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#include <oskit/x86/pc/reset.h>
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#include <oskit/tty.h>
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#include <oskit/console.h>
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#include <oskit/c/termios.h>
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#include <oskit/c/stdlib.h>
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#include "reboot.h"
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#include "boottype.h"
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/*
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* Define this if you want the boot adaptor to always use the serial
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* line for the console,
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* regardless of what the RB_SERIAL flag (if any) is set to.
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*/
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#undef BA_FORCE_SERIAL
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static int serial = 0; /* Use serial console or not. */
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static int cons_com_port = 1;
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static void our_exit(int rc);
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/* A common symbol that is overridden */
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void (*oskit_libc_exit)(int) = our_exit;
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/*
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* This overrides the _exit() function in libc.
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* When it is done, it calls pc_reset() to reboot the computer.
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*/
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static void
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our_exit(int rc)
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{
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if (serial)
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com_cons_flush(cons_com_port);
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pc_reset();
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}
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static void
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putchar_init()
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{
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/*
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* Check the BSD-style RB_SERIAL flag if we're booting from
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* BSD bootblocks.
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*/
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#ifdef BA_FORCE_SERIAL
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serial = 1;
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#else
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serial = (boottype == BOOTTYPE_OLDBSD || boottype == BOOTTYPE_NEWBSD)
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&& (boothowto & BSD_RB_SERIAL);
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#endif
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if (serial) {
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if (boothowto & BSD_RB_FASTCONSOLE) {
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base_cooked_termios.c_ispeed = B115200;
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base_cooked_termios.c_ospeed = B115200;
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}
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com_cons_init(cons_com_port, &base_cooked_termios);
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}
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}
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int
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console_putchar(int c)
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{
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static int inited = 0;
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if (! inited) {
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putchar_init();
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inited = 1;
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}
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serial ? com_cons_putchar(cons_com_port, c) : direct_cons_putchar(c);
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return c;
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}
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/*
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* This is more efficient for console output, and allows similar treatment
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* in usermode where character based output is really bad.
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*/
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int
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console_putbytes(const char *s, int len)
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{
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while (len) {
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console_putchar(*s++);
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len--;
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}
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return 0;
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}
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/*
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* Provided for completeness, and to avoid linker problems.
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*/
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int
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console_getchar(void)
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{
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panic("console_getchar: BSD boot adaptor stub version");
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}
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