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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Alan Korr
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <stdio.h>
#include "config.h"
#include <stdbool.h>
#include "lcd.h"
#include "font.h"
#include "system.h"
#include "kernel.h"
#include "thread.h"
#include "timer.h"
#include "inttypes.h"
#include "string.h"
#ifndef SIMULATOR
long cpu_frequency NOCACHEBSS_ATTR = CPU_FREQ;
#endif
#ifdef HAVE_ADJUSTABLE_CPU_FREQ
static int boost_counter NOCACHEBSS_ATTR = 0;
static bool cpu_idle NOCACHEBSS_ATTR = false;
int get_cpu_boost_counter(void)
{
return boost_counter;
}
#ifdef CPU_BOOST_LOGGING
#define MAX_BOOST_LOG 64
static char cpu_boost_calls[MAX_BOOST_LOG][MAX_PATH];
static int cpu_boost_first = 0;
static int cpu_boost_calls_count = 0;
static int cpu_boost_track_message = 0;
int cpu_boost_log_getcount(void)
{
return cpu_boost_calls_count;
}
char * cpu_boost_log_getlog_first(void)
{
if (cpu_boost_calls_count)
{
cpu_boost_track_message = 1;
return cpu_boost_calls[cpu_boost_first];
}
else return NULL;
}
char * cpu_boost_log_getlog_next(void)
{
int message = (cpu_boost_track_message+cpu_boost_first)%MAX_BOOST_LOG;
if (cpu_boost_track_message < cpu_boost_calls_count)
{
cpu_boost_track_message++;
return cpu_boost_calls[message];
}
else return NULL;
}
void cpu_boost_(bool on_off, char* location, int line)
{
if (cpu_boost_calls_count == MAX_BOOST_LOG)
{
cpu_boost_first = (cpu_boost_first+1)%MAX_BOOST_LOG;
cpu_boost_calls_count--;
if (cpu_boost_calls_count < 0)
cpu_boost_calls_count = 0;
}
if (cpu_boost_calls_count < MAX_BOOST_LOG)
{
int message = (cpu_boost_first+cpu_boost_calls_count)%MAX_BOOST_LOG;
snprintf(cpu_boost_calls[message], MAX_PATH,
"%c %s:%d",on_off==true?'B':'U',location,line);
cpu_boost_calls_count++;
}
#else
void cpu_boost(bool on_off)
{
#endif
if(on_off)
{
/* Boost the frequency if not already boosted */
if(boost_counter++ == 0)
set_cpu_frequency(CPUFREQ_MAX);
}
else
{
/* Lower the frequency if the counter reaches 0 */
if(--boost_counter == 0)
{
if(cpu_idle)
set_cpu_frequency(CPUFREQ_DEFAULT);
else
set_cpu_frequency(CPUFREQ_NORMAL);
}
/* Safety measure */
if(boost_counter < 0)
boost_counter = 0;
}
}
void cpu_idle_mode(bool on_off)
{
cpu_idle = on_off;
/* We need to adjust the frequency immediately if the CPU
isn't boosted */
if(boost_counter == 0)
{
if(cpu_idle)
set_cpu_frequency(CPUFREQ_DEFAULT);
else
set_cpu_frequency(CPUFREQ_NORMAL);
}
}
#endif /* HAVE_ADJUSTABLE_CPU_FREQ */
#ifdef HAVE_FLASHED_ROCKBOX
static bool detect_flash_header(uint8_t *addr)
{
#ifndef BOOTLOADER
int oldmode = system_memory_guard(MEMGUARD_NONE);
#endif
struct flash_header hdr;
memcpy(&hdr, addr, sizeof(struct flash_header));
#ifndef BOOTLOADER
system_memory_guard(oldmode);
#endif
return hdr.magic == FLASH_MAGIC;
}
#endif
bool detect_flashed_romimage(void)
{
#ifdef HAVE_FLASHED_ROCKBOX
return detect_flash_header((uint8_t *)FLASH_ROMIMAGE_ENTRY);
#else
return false;
#endif /* HAVE_FLASHED_ROCKBOX */
}
bool detect_flashed_ramimage(void)
{
#ifdef HAVE_FLASHED_ROCKBOX
return detect_flash_header((uint8_t *)FLASH_RAMIMAGE_ENTRY);
#else
return false;
#endif /* HAVE_FLASHED_ROCKBOX */
}
bool detect_original_firmware(void)
{
return !(detect_flashed_ramimage() || detect_flashed_romimage());
}
#if defined(CPU_ARM)
static const char* const uiename[] = {
"Undefined instruction", "Prefetch abort", "Data abort"
};
/* Unexpected Interrupt or Exception handler. Currently only deals with
exceptions, but will deal with interrupts later.
*/
void UIE(unsigned int pc, unsigned int num)
{
char str[32];
lcd_clear_display();
#ifdef HAVE_LCD_BITMAP
lcd_setfont(FONT_SYSFIXED);
#endif
lcd_puts(0, 0, uiename[num]);
snprintf(str, sizeof(str), "at %08x", pc);
lcd_puts(0, 1, str);
lcd_update();
while (1)
{
/* TODO: perhaps add button handling in here when we get a polling
driver some day.
*/
}
}
#endif /* CPU_ARM */
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