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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/mn10300/kernel/mn10300-debug.c
10817 views
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/* Debugging stuff for the MN10300-based processors

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 *

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 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.

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 * Written by David Howells ([email protected])

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 *

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 * This program is free software; you can redistribute it and/or

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 * modify it under the terms of the GNU General Public Licence

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 * as published by the Free Software Foundation; either version

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 * 2 of the Licence, or (at your option) any later version.

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 */

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#include <linux/sched.h>

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#include <asm/serial-regs.h>

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#undef MN10300_CONSOLE_ON_SERIO

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/*

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 * write a string directly through one of the serial ports on-board the MN10300

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 */

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#ifdef MN10300_CONSOLE_ON_SERIO

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void debug_to_serial_mnser(const char *p, int n)

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{

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	char ch;

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	for (; n > 0; n--) {

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		ch = *p++;

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#if MN10300_CONSOLE_ON_SERIO == 0

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		while (SC0STR & (SC01STR_TBF)) continue;

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		SC0TXB = ch;

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		while (SC0STR & (SC01STR_TBF)) continue;

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		if (ch == 0x0a) {

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			SC0TXB = 0x0d;

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			while (SC0STR & (SC01STR_TBF)) continue;

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		}

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#elif MN10300_CONSOLE_ON_SERIO == 1

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		while (SC1STR & (SC01STR_TBF)) continue;

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		SC1TXB = ch;

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		while (SC1STR & (SC01STR_TBF)) continue;

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		if (ch == 0x0a) {

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			SC1TXB = 0x0d;

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			while (SC1STR & (SC01STR_TBF)) continue;

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		}

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#elif MN10300_CONSOLE_ON_SERIO == 2

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		while (SC2STR & (SC2STR_TBF)) continue;

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		SC2TXB = ch;

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		while (SC2STR & (SC2STR_TBF)) continue;

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		if (ch == 0x0a) {

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			SC2TXB = 0x0d;

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			while (SC2STR & (SC2STR_TBF)) continue;

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		}

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#endif

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	}

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}

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#endif

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