95 lines
2.5 KiB
C
95 lines
2.5 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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*
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* Copyright (C) 2011-2013 by Lorenzo Miori
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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 <stdlib.h>
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#include <string.h>
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#include <inttypes.h>
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#include "system.h"
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#include "panic.h"
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#include "debug.h"
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#include "ascodec.h"
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#include "gpio-ypr.h"
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void power_off(void)
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{
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/* Something that we need to do before exit on our platform YPR0 */
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ascodec_close();
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gpio_close();
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exit(EXIT_SUCCESS);
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}
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uintptr_t *stackbegin;
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uintptr_t *stackend;
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void system_init(void)
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{
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int *s;
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/* fake stack, OS manages size (and growth) */
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stackbegin = stackend = (uintptr_t*)&s;
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/* Here begins our platform specific initilization for various things */
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ascodec_init();
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gpio_init();
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}
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void system_reboot(void)
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{
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power_off();
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}
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void system_exception_wait(void)
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{
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system_reboot();
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}
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#ifdef HAVE_ADJUSTABLE_CPU_FREQ
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#include <stdio.h>
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#include "file.h"
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/* This is the Linux Kernel CPU governor... */
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static void set_cpu_freq(int speed)
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{
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char temp[10];
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int cpu_dev;
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cpu_dev = open("/sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed", O_WRONLY);
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if (cpu_dev < 0)
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return;
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write(cpu_dev, temp, sprintf(temp, "%d", speed) + 1);
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close(cpu_dev);
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}
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void set_cpu_frequency(long frequency)
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{
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switch (frequency)
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{
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case CPUFREQ_MAX:
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set_cpu_freq(532000);
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cpu_frequency = CPUFREQ_MAX;
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break;
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case CPUFREQ_NORMAL:
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set_cpu_freq(400000);
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cpu_frequency = CPUFREQ_NORMAL;
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break;
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default:
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set_cpu_freq(200000);
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cpu_frequency = CPUFREQ_DEFAULT;
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break;
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}
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}
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#endif
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