783c77531c
1. Slightly revised and regularized internal interface. Callback is used for read and write to provide completion signal instead of having two mechanisms. 2. Lower overhead for asynchronous or alterate completion callbacks. We now only init what is required by the transfer. A couple unneeded structure members were also nixed. 3. Fixes a bug that would neglect a semaphore wait if pumping the I2C interrupts in a loop when not in thread state or interrupts are masked. 4. Corrects broken initialization order by defining KDEV_INIT, which makes kernel_init() call kernel_device_init() to initialize additional devices _after_ the kernel, threading and synchronization objects are safe to use. 5. Locking set_cpu_frequency has to be done at the highest level in system.c to ensure the boost counter and the frequency are both set in agreement. Reconcile the locking inteface between PP and AMS (the only two currently using locking there) to keep it clean. Now works fine with voltages in GIT HEAD on my Fuze v2, type 0. Previously, everything crashed and died instantly. action.c calling set_cpu_frequency from a tick was part of it. The rest may have been related to 3. and 4. Honestly, I'm not certain! Testing by Mihail Zenkov indicates it solves our problems. This will get the developer builds running again after the kernel assert code push. Change-Id: Ie245994fb3e318dd5ef48e383ce61fdd977224d4
145 lines
3.5 KiB
C
145 lines
3.5 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2002 by wavey@wavey.org
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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 License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#include <stdio.h>
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#include <stdarg.h>
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#include <string.h>
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#include "panic.h"
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#include "lcd.h"
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#include "font.h"
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#include "debug.h"
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#include "led.h"
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#include "power.h"
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#include "system.h"
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#include "logf.h"
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#if defined(CPU_ARM)
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#include "gcc_extensions.h"
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#include <backtrace.h>
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#endif
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static char panic_buf[128];
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#define LINECHARS (LCD_WIDTH/SYSFONT_WIDTH) - 2
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#if defined(CPU_ARM)
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void panicf_f( const char *fmt, ...);
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/* we wrap panicf() here with naked function to catch SP value */
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void __attribute__((naked)) panicf( const char *fmt, ...)
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{
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(void)fmt;
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asm volatile ("mov r4, sp \n"
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"b panicf_f \n"
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);
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while (1);
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}
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/*
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* "Dude. This is pretty fucked-up, right here."
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*/
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void panicf_f( const char *fmt, ...)
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{
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int sp;
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asm volatile ("mov %[SP],r4 \n"
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: [SP] "=r" (sp)
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);
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int pc = (int)__builtin_return_address(0);
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#else
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void panicf( const char *fmt, ...)
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{
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#endif
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va_list ap;
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#if (CONFIG_PLATFORM & PLATFORM_NATIVE)
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/* Disable interrupts */
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#ifdef CPU_ARM
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disable_interrupt(IRQ_FIQ_STATUS);
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#else
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set_irq_level(DISABLE_INTERRUPTS);
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#endif
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#endif /* SIMULATOR */
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va_start( ap, fmt );
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vsnprintf( panic_buf, sizeof(panic_buf), fmt, ap );
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va_end( ap );
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lcd_set_viewport(NULL);
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#ifdef HAVE_LCD_CHARCELLS
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lcd_double_height(false);
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lcd_puts(0, 0, "*PANIC*");
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lcd_puts(0, 1, panic_buf);
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#elif defined(HAVE_LCD_BITMAP)
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int y = 1;
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#if LCD_DEPTH > 1
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lcd_set_backdrop(NULL);
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lcd_set_drawmode(DRMODE_SOLID);
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lcd_set_foreground(LCD_BLACK);
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lcd_set_background(LCD_WHITE);
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#endif
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lcd_clear_display();
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lcd_setfont(FONT_SYSFIXED);
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lcd_puts(1, y++, (unsigned char *)"*PANIC*");
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{
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/* wrap panic line */
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int i, len = strlen(panic_buf);
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for (i=0; i<len; i+=LINECHARS) {
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unsigned char c = panic_buf[i+LINECHARS];
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panic_buf[i+LINECHARS] = 0;
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lcd_puts(1, y++, (unsigned char *)panic_buf+i);
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panic_buf[i+LINECHARS] = c;
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}
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}
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#if defined(CPU_ARM)
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backtrace(pc, sp, &y);
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#endif
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#ifdef ROCKBOX_HAS_LOGF
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logf_panic_dump(&y);
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#endif
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#else
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/* no LCD */
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#endif
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lcd_update();
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DEBUGF("%s", panic_buf);
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#ifdef HAVE_ADJUSTABLE_CPU_FREQ
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if (cpu_boost_lock())
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{
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set_cpu_frequency(0);
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cpu_boost_unlock();
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}
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#endif /* HAVE_ADJUSTABLE_CPU_FREQ */
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#ifdef HAVE_ATA_POWER_OFF
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ide_power_enable(false);
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#endif
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system_exception_wait(); /* if this returns, try to reboot */
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system_reboot();
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while (1); /* halt */
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}
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