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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by wavey@wavey.org
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "config.h"
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include "panic.h"
#include "lcd.h"
#include "font.h"
#include "debug.h"
#include "led.h"
#include "power.h"
#include "system.h"
#if defined(CPU_ARM)
#include "gcc_extensions.h"
#include <backtrace.h>
#endif
static char panic_buf[128];
#define LINECHARS (LCD_WIDTH/SYSFONT_WIDTH) - 2
#if defined(CPU_ARM)
void panicf_f( const char *fmt, ...);
/* we wrap panicf() here with naked function to catch SP value */
void panicf( const char *fmt, ...)
{
(void)fmt;
asm volatile ("mov r4, sp \n"
"b panicf_f \n"
);
}
/*
* "Dude. This is pretty fucked-up, right here."
*/
void panicf_f( const char *fmt, ...)
{
int sp;
asm volatile ("mov %[SP],r4 \n"
: [SP] "=r" (sp)
);
int pc = (int)__builtin_return_address(0);
#else
void panicf( const char *fmt, ...)
{
#endif
va_list ap;
#if (CONFIG_PLATFORM & PLATFORM_NATIVE)
/* Disable interrupts */
#ifdef CPU_ARM
disable_interrupt(IRQ_FIQ_STATUS);
#else
set_irq_level(DISABLE_INTERRUPTS);
#endif
#endif /* SIMULATOR */
va_start( ap, fmt );
vsnprintf( panic_buf, sizeof(panic_buf), fmt, ap );
va_end( ap );
#ifdef HAVE_LCD_CHARCELLS
lcd_double_height(false);
lcd_puts(0, 0, "*PANIC*");
lcd_puts(0, 1, panic_buf);
#elif defined(HAVE_LCD_BITMAP)
int y = 1;
#if LCD_DEPTH > 1
lcd_set_backdrop(NULL);
lcd_set_drawmode(DRMODE_SOLID);
lcd_set_foreground(LCD_BLACK);
lcd_set_background(LCD_WHITE);
#endif
lcd_clear_display();
lcd_setfont(FONT_SYSFIXED);
lcd_set_viewport(NULL);
lcd_puts(1, y++, (unsigned char *)"*PANIC*");
{
/* wrap panic line */
int i, len = strlen(panic_buf);
for (i=0; i<len; i+=LINECHARS) {
unsigned char c = panic_buf[i+LINECHARS];
panic_buf[i+LINECHARS] = 0;
lcd_puts(1, y++, (unsigned char *)panic_buf+i);
panic_buf[i+LINECHARS] = c;
}
}
#if defined(CPU_ARM)
backtrace(pc, sp, &y);
#endif
#else
/* no LCD */
#endif
lcd_update();
DEBUGF("%s", panic_buf);
set_cpu_frequency(0);
#ifdef HAVE_ATA_POWER_OFF
ide_power_enable(false);
#endif
system_exception_wait(); /* if this returns, try to reboot */
system_reboot();
while (1); /* halt */
}
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