leds.h

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/* ASB2303-specific LEDs
 *
 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells ([email protected])
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public Licence
 * as published by the Free Software Foundation; either version
 * 2 of the Licence, or (at your option) any later version.
 */

#ifndef _ASM_UNIT_LEDS_H
#define _ASM_UNIT_LEDS_H

#include <asm/pio-regs.h>
#include <asm/cpu-regs.h>
#include <asm/exceptions.h>

#define ASB2303_GPIO0DEF    __SYSREG(0xDB000000, u32)
#define ASB2303_7SEGLEDS    __SYSREG(0xDB000008, u32)

/*
 * use the 7-segment LEDs to indicate states
 */

/* flip the 7-segment LEDs between "G" and "-" */
#define mn10300_set_gdbleds(ONOFF)          \
do {                            \
    ASB2303_7SEGLEDS = (ONOFF) ? 0x85 : 0x7f;   \
} while (0)

/* indicate double-fault by displaying "d" on the LEDs */
#define mn10300_set_dbfleds         \
    mov 0x43,d0         ;   \
    movbu   d0,(ASB2303_7SEGLEDS)

#ifndef __ASSEMBLY__
extern void peripheral_leds_display_exception(enum exception_code code);
extern void peripheral_leds_led_chase(void);
extern void debug_to_serial(const char *p, int n);
#endif /* __ASSEMBLY__ */

#endif /* _ASM_UNIT_LEDS_H */