/*
- * Copyright (c) 2005 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2005-2006 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* @OSF_COPYRIGHT@
* @APPLE_FREE_COPYRIGHT@
*/
-#include <mach_kdb.h>
-#include <platforms.h>
#include <kern/spl.h>
#include <mach/std_types.h>
#include <types.h>
#include <kern/thread.h>
#include <console/serial_protos.h>
+#include <libkern/section_keywords.h>
-extern unsigned int disableSerialOuput;
-extern void cons_cinput(char ch); /* The BSD routine that gets characters */
+extern void cons_cinput(char ch); /* The BSD routine that gets characters */
-unsigned int serialmode; /* Serial mode keyboard and console control */
+SECURITY_READ_ONLY_LATE(unsigned int) serialmode; /* Serial mode keyboard and console control */
/*
* This routine will start a thread that polls the serial port, listening for
void
serial_keyboard_init(void)
{
- kern_return_t result;
- thread_t thread;
+ kern_return_t result;
+ thread_t thread;
- if(!(serialmode & 2)) return; /* Leave if we do not want a serial console */
+ if (!(serialmode & SERIALMODE_INPUT)) { /* Leave if we do not want a serial console */
+ return;
+ }
kprintf("Serial keyboard started\n");
result = kernel_thread_start_priority((thread_continue_t)serial_keyboard_start, NULL, MAXPRI_KERNEL, &thread);
- if (result != KERN_SUCCESS)
+ if (result != KERN_SUCCESS) {
panic("serial_keyboard_init");
+ }
thread_deallocate(thread);
}
void
serial_keyboard_start(void)
{
-
- serial_keyboard_poll(); /* Go see if there are any characters pending now */
- panic("serial_keyboard_start: we can't get back here\n");
-
+ /* Go see if there are any characters pending now */
+ serial_keyboard_poll();
}
+__dead2
void
serial_keyboard_poll(void)
{
int chr;
uint64_t next;
-
- while(1) { /* Do this for a while */
- chr = _serial_getc(0, 1, 0, 1); /* Get a character if there is one */
- if(chr < 0) break; /* The serial buffer is empty */
- cons_cinput((char)chr); /* Buffer up the character */
+ while (1) {
+ chr = _serial_getc(0, 1, 0, 1); /* Get a character if there is one */
+ if (chr < 0) { /* The serial buffer is empty */
+ break;
+ }
+ cons_cinput((char)chr); /* Buffer up the character */
}
- clock_interval_to_deadline(16, 1000000, &next); /* Get time of pop */
+ clock_interval_to_deadline(16, 1000000, &next); /* Get time of pop */
- assert_wait_deadline((event_t)serial_keyboard_poll, THREAD_UNINT, next); /* Show we are "waiting" */
- thread_block((thread_continue_t)serial_keyboard_poll); /* Wait for it */
+ assert_wait_deadline((event_t)serial_keyboard_poll, THREAD_UNINT, next); /* Show we are "waiting" */
+ thread_block((thread_continue_t)serial_keyboard_poll); /* Wait for it */
panic("serial_keyboard_poll: Shouldn't never ever get here...\n");
}
-boolean_t console_is_serial()
+boolean_t
+console_is_serial(void)
{
return cons_ops_index == SERIAL_CONS_OPS;
}
int
-switch_to_video_console()
+switch_to_video_console(void)
{
int old_cons_ops = cons_ops_index;
cons_ops_index = VC_CONS_OPS;
}
int
-switch_to_serial_console()
+switch_to_serial_console(void)
{
+ extern bool serial_console_enabled;
int old_cons_ops = cons_ops_index;
- cons_ops_index = SERIAL_CONS_OPS;
+
+ if (serial_console_enabled) {
+ cons_ops_index = SERIAL_CONS_OPS;
+ }
+
return old_cons_ops;
}
/* The switch_to_{video,serial,kgdb}_console functions return a cookie that
- can be used to restore the console to whatever it was before, in the
- same way that splwhatever() and splx() work. */
+ * can be used to restore the console to whatever it was before, in the
+ * same way that splwhatever() and splx() work. */
void
switch_to_old_console(int old_console)
{
if ((ops >= nconsops) && !squawked) {
squawked = TRUE;
printf("switch_to_old_console: unknown ops %d\n", ops);
- } else
+ } else {
cons_ops_index = ops;
+ }
+}
+
+void
+console_printbuf_state_init(struct console_printbuf_state * data, int write_on_newline, int can_block)
+{
+ if (data == NULL) {
+ return;
+ }
+ bzero(data, sizeof(struct console_printbuf_state));
+ if (write_on_newline) {
+ data->flags |= CONS_PB_WRITE_NEWLINE;
+ }
+ if (can_block) {
+ data->flags |= CONS_PB_CANBLOCK;
+ }
+}
+
+void
+console_printbuf_putc(int ch, void * arg)
+{
+ struct console_printbuf_state * info = (struct console_printbuf_state *)arg;
+ info->total += 1;
+ if (info->pos < (SERIAL_CONS_BUF_SIZE - 1)) {
+ info->str[info->pos] = (char)ch;
+ info->pos += 1;
+ } else {
+ /*
+ * when len(line) > SERIAL_CONS_BUF_SIZE, we truncate the message
+ * if boot-arg 'drain_uart_sync=1' is set, then
+ * drain all the buffer right now and append new ch
+ */
+ if (serialmode & SERIALMODE_SYNCDRAIN) {
+ info->str[info->pos] = '\0';
+ console_write(info->str, info->pos);
+ info->pos = 0;
+ info->str[info->pos] = (char)ch;
+ info->pos += 1;
+ }
+ }
+
+ info->str[info->pos] = '\0';
+ /* if newline, then try output to console */
+ if (ch == '\n' && info->flags & CONS_PB_WRITE_NEWLINE) {
+ console_write(info->str, info->pos);
+ info->pos = 0;
+ info->str[info->pos] = '\0';
+ }
+}
+
+void
+console_printbuf_clear(struct console_printbuf_state * info)
+{
+ if (info->pos != 0) {
+ console_write(info->str, info->pos);
+ }
+ info->pos = 0;
+ info->str[info->pos] = '\0';
+ info->total = 0;
}
projects / apple / xnu.git / blobdiff