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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
*
* Copyright (C) 2017 Marcin Bukat
* Copyright (C) 2016 Amaury Pouly
*
* 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 <unistd.h>
#include <signal.h>
#include <string.h>
#include <ucontext.h>
#include <backtrace.h>
#include "system.h"
#include "mv.h"
#include "font.h"
#include "power.h"
#include "button.h"
#include "backlight-target.h"
#include "lcd.h"
#include "filesystem-hosted.h"
#include "logf.h"
/* to make thread-internal.h happy */
uintptr_t *stackbegin;
uintptr_t *stackend;
/* forward-declare */
bool os_file_exists(const char *ospath);
static void sig_handler(int sig, siginfo_t *siginfo, void *context)
{
/* safe guard variable - we call backtrace() only on first
* UIE call. This prevent endless loop if backtrace() touches
* memory regions which cause abort
*/
static bool triggered = false;
lcd_set_backdrop(NULL);
lcd_set_drawmode(DRMODE_SOLID);
lcd_set_foreground(LCD_BLACK);
lcd_set_background(LCD_WHITE);
unsigned line = 0;
lcd_setfont(FONT_SYSFIXED);
lcd_set_viewport(NULL);
lcd_clear_display();
/* get context info */
ucontext_t *uc = (ucontext_t *)context;
unsigned long pc = uc->uc_mcontext.pc;
unsigned long sp = uc->uc_mcontext.gregs[29];
lcd_putsf(0, line++, "%s at %08x", strsignal(sig), pc);
if(sig == SIGILL || sig == SIGFPE || sig == SIGSEGV || sig == SIGBUS || sig == SIGTRAP)
lcd_putsf(0, line++, "address %p", siginfo->si_addr);
if(!triggered)
{
triggered = true;
rb_backtrace(pc, sp, &line);
}
#ifdef ROCKBOX_HAS_LOGF
lcd_putsf(0, line++, "logf:");
logf_panic_dump(&line);
#endif
lcd_update();
system_exception_wait(); /* If this returns, try to reboot */
system_reboot();
while (1); /* halt */
}
void power_off(void)
{
backlight_hw_off();
system("/sbin/poweroff");
while (1); /* halt */
}
void system_init(void)
{
int *s;
/* fake stack, to make thread-internal.h happy */
stackbegin = stackend = (uintptr_t*)&s;
/* catch some signals for easier debugging */
struct sigaction sa;
sigfillset(&sa.sa_mask);
sa.sa_flags = SA_SIGINFO;
sa.sa_sigaction = &sig_handler;
sigaction(SIGILL, &sa, NULL);
sigaction(SIGABRT, &sa, NULL);
sigaction(SIGFPE, &sa, NULL);
sigaction(SIGSEGV, &sa, NULL);
sigaction(SIGPIPE, &sa, NULL);
sigaction(SIGTERM, &sa, NULL);
sigaction(SIGBUS, &sa, NULL);
sigaction(SIGTERM, &sa, NULL);
}
void system_reboot(void)
{
backlight_hw_off();
system("/sbin/reboot");
while (1); /* halt */
}
void system_exception_wait(void)
{
backlight_hw_on();
backlight_hw_brightness(DEFAULT_BRIGHTNESS_SETTING);
/* wait until button press and release */
while(button_read_device() != 0) {}
while(button_read_device() == 0) {}
while(button_read_device() != 0) {}
while(button_read_device() == 0) {}
}
bool hostfs_removable(IF_MD_NONVOID(int drive))
{
#ifdef HAVE_MULTIDRIVE
if (drive > 0)
return true;
else
#endif
#ifdef HAVE_HOTSWAP_STORAGE_AS_MAIN
return true;
#else
return false; /* internal: always present */
#endif
}
bool hostfs_present(IF_MD_NONVOID(int drive))
{
#ifdef HAVE_MULTIDRIVE
if (drive > 0)
#if defined(MULTIDRIVE_DEV)
return os_file_exists(MULTIDRIVE_DEV);
#else
return true; // FIXME?
#endif
else
#endif
#ifdef HAVE_HOTSWAP_STORAGE_AS_MAIN
return os_file_exists(ROOTDRIVE_DEV);
#else
return true; /* internal: always present */
#endif
}
#ifdef HAVE_MULTIDRIVE
int volume_drive(int drive)
{
return drive;
}
#endif /* HAVE_MULTIDRIVE */
#ifdef CONFIG_STORAGE_MULTI
int hostfs_driver_type(int drive)
{
#if (CONFIG_STORAGE & STORAGE_USB)
return drive > 0 ? STORAGE_USB_NUM : STORAGE_HOSTFS_NUM;
#else
return drive > 0 ? STORAGE_SD_NUM : STORAGE_HOSTFS_NUM;
#endif
}
#endif /* CONFIG_STORAGE_MULTI */
int hostfs_init(void)
{
return 0;
}
int hostfs_flush(void)
{
sync();
return 0;
}
#ifdef HAVE_HOTSWAP
bool volume_removable(int volume)
{
/* don't support more than one partition yet, so volume == drive */
return hostfs_removable(volume);
}
bool volume_present(int volume)
{
/* don't support more than one partition yet, so volume == drive */
return hostfs_present(volume);
}
#endif
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