static void woof_woof(void)
{
/* stop hadrware watchdog, we catched the error */
imx233_rtc_enable_watchdog(false);
uint32_t pc = HW_DIGCTL_SCRATCH0;
/* write a "SWI #0xdead" instruction at the faulty instruction so that it
* will trigger a proper backtrace */
*(uint32_t *)pc = 0xef00dead;
commit_discard_idcache();
}
int main(void)
{
unsigned char* loadbuffer;
int buffer_size;
int rc;
int(*kernel_entry)(void);
led_init();
clear_leds(LED_ALL);
/* NB: something in system_init() prevents H-JTAG from downloading */
/* system_init(); */
kernel_init();
/* enable_interrupt(IRQ_FIQ_STATUS); */
backlight_init();
lcd_init();
lcd_setfont(FONT_SYSFIXED);
button_init();
dma_init();
uart_init();
uart_init_device(DEBUG_UART_PORT);
/* mini2440_test(); */
/* Show debug messages if button is pressed */
int touch_data;
if(button_read_device(&touch_data) & BUTTON_MENU)
verbose = true;
printf("Rockbox boot loader");
printf("Version " RBVERSION);
rc = storage_init();
if(rc)
{
reset_screen();
error(EATA, rc, true);
}
disk_init(IF_MD(0));
rc = disk_mount_all();
if (rc<=0)
{
error(EDISK,rc, true);
}
printf("Loading firmware");
/* Flush out anything pending first */
commit_discard_idcache();
loadbuffer = (unsigned char*) 0x31000000;
buffer_size = (unsigned char*)0x31400000 - loadbuffer;
rc = load_firmware(loadbuffer, BOOTFILE, buffer_size);
if(rc <= 0)
error(EBOOTFILE, rc, true);
printf("Loaded firmware %d\n", rc);
/* storage_close(); */
system_prepare_fw_start();
commit_discard_idcache();
kernel_entry = (void*) loadbuffer;
rc = kernel_entry();
/* end stop - should not get here */
led_flash(LED_ALL, LED_NONE);
while (1); /* avoid warning */
}
/* load binary blob from disk to memory, returning a handle */
void * lc_open(const char *filename, unsigned char *buf, size_t buf_size)
{
int fd = open(filename, O_RDONLY);
ssize_t read_size;
struct lc_header hdr;
unsigned char *buf_end = buf+buf_size;
off_t copy_size;
if (fd < 0)
{
DEBUGF("Could not open file");
goto error;
}
#if NUM_CORES > 1
/* Make sure COP cache is flushed and invalidated before loading */
{
int my_core = switch_core(CURRENT_CORE ^ 1);
switch_core(my_core);
}
#endif
/* read the header to obtain the load address */
read_size = read(fd, &hdr, sizeof(hdr));
if (read_size < 0)
{
DEBUGF("Could not read from file");
goto error_fd;
}
/* hdr.end_addr points to the end of the bss section,
* but there might be idata/icode behind that so the bytes to copy
* can be larger */
copy_size = MAX(filesize(fd), hdr.end_addr - hdr.load_addr);
if (hdr.load_addr < buf || (hdr.load_addr+copy_size) > buf_end)
{
DEBUGF("Binary doesn't fit into memory");
goto error_fd;
}
/* go back to beginning to load the whole thing (incl. header) */
if (lseek(fd, 0, SEEK_SET) < 0)
{
DEBUGF("lseek failed");
goto error_fd;
}
/* the header has the addresses where the code is linked at */
read_size = read(fd, hdr.load_addr, copy_size);
close(fd);
if (read_size < 0)
{
DEBUGF("Could not read from file");
goto error;
}
/* commit dcache and discard icache */
commit_discard_idcache();
/* return a pointer the header, reused by lc_get_header() */
return hdr.load_addr;
error_fd:
close(fd);
error:
return NULL;
}
void main(void)
{
unsigned char* loadbuffer;
int buffer_size;
int rc;
int(*kernel_entry)(void);
system_init();
kernel_init(); /* Need the kernel to sleep */
enable_interrupt(IRQ_FIQ_STATUS);
lcd_init();
backlight_init();
button_init();
font_init();
adc_init();
lcd_setfont(FONT_SYSFIXED);
/* These checks should only run if the bootloader is flashed */
if(GSTATUS3&0x02)
{
GSTATUS3&=0xFFFFFFFD;
if(!(GPGDAT&BUTTON_POWER) && charger_inserted())
{
while(!(GPGDAT&BUTTON_POWER) && charger_inserted())
{
char msg[20];
if(charging_state())
{
snprintf(msg,sizeof(msg),"Charging");
}
else
{
snprintf(msg,sizeof(msg),"Charge Complete");
}
reset_screen();
lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * strlen(msg))) / 2,
(LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
lcd_update();
#if defined(HAVE_RTC_ALARM)
/* Check if the alarm went off while charging */
if(rtc_check_alarm_flag())
{
GSTATUS3=1; /* Normally this is set in crt0.s */
break;
}
#endif
}
if(!(GPGDAT&BUTTON_POWER)
#if defined(HAVE_RTC_ALARM)
&& !GSTATUS3
#endif
)
{
shutdown();
}
}
if(button_hold())
{
const char msg[] = "HOLD is enabled";
reset_screen();
lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * strlen(msg))) / 2,
(LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
lcd_update();
sleep(2*HZ);
shutdown();
}
}
power_init();
usb_init();
/* Enter USB mode without USB thread */
if(usb_detect() == USB_INSERTED)
{
const char msg[] = "Bootloader USB mode";
reset_screen();
lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * strlen(msg))) / 2,
(LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
lcd_update();
storage_enable(false);
sleep(HZ/20);
usb_enable(true);
while (usb_detect() == USB_INSERTED)
sleep(HZ);
usb_enable(false);
reset_screen();
lcd_update();
}
reset_screen();
/* Show debug messages if button is pressed */
if(button_read_device()&BUTTON_A)
verbose = true;
printf("Rockbox boot loader");
printf("Version %s", rbversion);
sleep(50); /* ATA seems to error without this pause */
rc = storage_init();
if(rc)
{
reset_screen();
error(EATA, rc, true);
}
filesystem_init();
rc = disk_mount_all();
if (rc<=0)
{
error(EDISK, rc, true);
}
printf("Loading firmware");
/* Flush out anything pending first */
commit_discard_idcache();
loadbuffer = (unsigned char*) 0x31000000;
buffer_size = (unsigned char*)0x31400000 - loadbuffer;
rc = load_firmware(loadbuffer, BOOTFILE, buffer_size);
if(rc <= EFILE_EMPTY)
error(EBOOTFILE, rc, true);
storage_close();
system_prepare_fw_start();
commit_discard_idcache();
kernel_entry = (void*) loadbuffer;
rc = kernel_entry();
#if 0
/* Halt */
while (1)
core_idle();
#else
/* Return and restart */
#endif
}
void main(uint32_t arg, uint32_t addr)
{
unsigned char* loadbuffer;
int buffer_size;
void(*kernel_entry)(void);
int ret;
system_init();
kernel_init();
power_init();
enable_irq();
lcd_init();
lcd_clear_display();
lcd_update();
backlight_init();
button_init();
//button_debug_screen();
printf("Boot version: %s", RBVERSION);
printf("arg=%x addr=%x", arg, addr);
#ifdef SANSA_FUZEPLUS
extern void imx233_mmc_disable_window(void);
if(arg == 0xfee1dead)
{
printf("Disable MMC window.");
imx233_mmc_disable_window();
}
#endif
ret = storage_init();
if(ret < 0)
error(EATA, ret, true);
/* NOTE: allow disk_init and disk_mount_all to fail since we can do USB after.
* We need this order to determine the correct logical sector size */
while(!disk_init(IF_MV(0)))
printf("disk_init failed!");
if((ret = disk_mount_all()) <= 0)
error(EDISK, ret, false);
if(usb_detect() == USB_INSERTED)
usb_mode(HZ);
printf("Loading firmware");
loadbuffer = (unsigned char*)loadaddress;
buffer_size = (int)(loadaddressend - loadaddress);
while((ret = load_firmware(loadbuffer, BOOTFILE, buffer_size)) < 0)
{
error(EBOOTFILE, ret, true);
}
kernel_entry = (void*) loadbuffer;
printf("Executing");
disable_interrupt(IRQ_FIQ_STATUS);
commit_discard_idcache();
kernel_entry();
printf("ERR: Failed to boot");
/* never returns */
while(1) ;
}
