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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Alan Korr
*
* 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 "system.h"
#include <stdio.h>
#include "kernel.h"
#include "thread.h"
#include "string.h"
#ifndef SIMULATOR
long cpu_frequency SHAREDBSS_ATTR = CPU_FREQ;
#endif
#ifdef HAVE_ADJUSTABLE_CPU_FREQ
static int boost_counter SHAREDBSS_ATTR = 0;
static bool cpu_idle SHAREDBSS_ATTR = false;
#if NUM_CORES > 1
static struct corelock boostctrl_cl SHAREDBSS_ATTR;
void cpu_boost_init(void)
{
corelock_init(&boostctrl_cl);
}
#endif
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)
{
char *first;
corelock_lock(&boostctrl_cl);
first = NULL;
if (cpu_boost_calls_count)
{
cpu_boost_track_message = 1;
first = cpu_boost_calls[cpu_boost_first];
}
corelock_unlock(&boostctrl_cl);
return first;
}
char * cpu_boost_log_getlog_next(void)
{
int message;
char *next;
corelock_lock(&boostctrl_cl);
message = (cpu_boost_track_message+cpu_boost_first)%MAX_BOOST_LOG;
next = NULL;
if (cpu_boost_track_message < cpu_boost_calls_count)
{
cpu_boost_track_message++;
next = cpu_boost_calls[message];
}
corelock_unlock(&boostctrl_cl);
return next;
}
void cpu_boost_(bool on_off, char* location, int line)
{
corelock_lock(&boostctrl_cl);
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)
{
corelock_lock(&boostctrl_cl);
#endif /* CPU_BOOST_LOGGING */
if(on_off)
{
/* Boost the frequency if not already boosted */
if(++boost_counter == 1)
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;
}
}
}
corelock_unlock(&boostctrl_cl);
}
void cpu_idle_mode(bool on_off)
{
corelock_lock(&boostctrl_cl);
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);
}
corelock_unlock(&boostctrl_cl);
}
#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());
}
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