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foxbox/bootloader/main.c

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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2005 by Linus Nielsen Feltzing
*
* 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 "config.h"
#include <stdlib.h>
#include <stdio.h>
#include "inttypes.h"
#include "string.h"
#include "cpu.h"
#include "system.h"
#include "lcd.h"
#include "lcd-remote.h"
#include "scroll_engine.h"
#include "kernel.h"
#include "thread.h"
#include "ata.h"
#include "usb.h"
#include "disk.h"
#include "font.h"
#include "adc.h"
#include "backlight.h"
#include "backlight-target.h"
#include "button.h"
#include "panic.h"
#include "power.h"
#include "powermgmt.h"
#include "file.h"
#include "eeprom_settings.h"
#include "rbunicode.h"
#include "common.h"
#include <stdarg.h>
/* Maximum allowed firmware image size. 10MB is more than enough */
#define MAX_LOADSIZE (10*1024*1024)
#define DRAM_START 0x31000000
#ifdef HAVE_EEPROM_SETTINGS
static bool recovery_mode = false;
#endif
char version[] = APPSVERSION;
/* Reset the cookie for the crt0 crash check */
inline void __reset_cookie(void)
{
asm(" move.l #0,%d0");
asm(" move.l %d0,0x10017ffc");
}
void start_iriver_fw(void)
{
asm(" move.w #0x2700,%sr");
__reset_cookie();
asm(" movec.l %d0,%vbr");
asm(" move.l 0,%sp");
asm(" lea.l 8,%a0");
asm(" jmp (%a0)");
}
void start_firmware(void)
{
asm(" move.w #0x2700,%sr");
__reset_cookie();
asm(" move.l %0,%%d0" :: "i"(DRAM_START));
asm(" movec.l %d0,%vbr");
asm(" move.l %0,%%sp" :: "m"(*(int *)DRAM_START));
asm(" move.l %0,%%a0" :: "m"(*(int *)(DRAM_START+4)));
asm(" jmp (%a0)");
}
#ifdef IRIVER_H100_SERIES
void start_flashed_romimage(void)
{
uint8_t *src = (uint8_t *)FLASH_ROMIMAGE_ENTRY;
int *reset_vector;
if (!detect_flashed_romimage())
return ;
reset_vector = (int *)(&src[sizeof(struct flash_header)+4]);
asm(" move.w #0x2700,%sr");
__reset_cookie();
asm(" move.l %0,%%d0" :: "i"(DRAM_START));
asm(" movec.l %d0,%vbr");
asm(" move.l %0,%%sp" :: "m"(reset_vector[0]));
asm(" move.l %0,%%a0" :: "m"(reset_vector[1]));
asm(" jmp (%a0)");
/* Failure */
power_off();
}
void start_flashed_ramimage(void)
{
struct flash_header hdr;
unsigned char *buf = (unsigned char *)DRAM_START;
uint8_t *src = (uint8_t *)FLASH_RAMIMAGE_ENTRY;
if (!detect_flashed_ramimage())
return;
/* Load firmware from flash */
cpu_boost(true);
memcpy(&hdr, src, sizeof(struct flash_header));
src += sizeof(struct flash_header);
memcpy(buf, src, hdr.length);
cpu_boost(false);
start_firmware();
/* Failure */
power_off();
}
#endif /* IRIVER_H100_SERIES */
void shutdown(void)
{
printf("Shutting down...");
#ifdef HAVE_EEPROM_SETTINGS
/* Reset the rockbox crash check. */
firmware_settings.bl_version = 0;
eeprom_settings_store();
#endif
/* We need to gracefully spin down the disk to prevent clicks. */
if (ide_powered())
{
/* Make sure ATA has been initialized. */
ata_init();
/* And put the disk into sleep immediately. */
ata_sleepnow();
}
sleep(HZ*2);
/* Backlight OFF */
_backlight_off();
#ifdef HAVE_REMOTE_LCD
_remote_backlight_off();
#endif
__reset_cookie();
power_off();
}
/* Print the battery voltage (and a warning message). */
void check_battery(void)
{
int battery_voltage, batt_int, batt_frac;
battery_voltage = battery_adc_voltage();
batt_int = battery_voltage / 1000;
batt_frac = (battery_voltage % 1000) / 10;
printf("Batt: %d.%02dV", batt_int, batt_frac);
if (battery_voltage <= 310)
{
printf("WARNING! BATTERY LOW!!");
sleep(HZ*2);
}
}
#ifdef HAVE_EEPROM_SETTINGS
void initialize_eeprom(void)
{
if (detect_original_firmware())
return ;
if (!eeprom_settings_init())
{
recovery_mode = true;
return ;
}
/* If bootloader version has not been reset, disk might
* not be intact. */
if (firmware_settings.bl_version || !firmware_settings.disk_clean)
{
firmware_settings.disk_clean = false;
recovery_mode = true;
}
firmware_settings.bl_version = EEPROM_SETTINGS_BL_MINVER;
eeprom_settings_store();
}
void try_flashboot(void)
{
if (!firmware_settings.initialized)
return ;
switch (firmware_settings.bootmethod)
{
case BOOT_DISK:
return;
case BOOT_ROM:
start_flashed_romimage();
recovery_mode = true;
break;
case BOOT_RAM:
start_flashed_ramimage();
recovery_mode = true;
break;
default:
recovery_mode = true;
return;
}
}
static const char *options[] = {
"Boot from disk",
"Boot RAM image",
"Boot ROM image",
"Shutdown"
};
#define FAILSAFE_OPTIONS 4
#define TIMEOUT (15*HZ)
void failsafe_menu(void)
{
long start_tick = current_tick;
int option = 3;
int button;
int defopt = -1;
char buf[32];
int i;
extern int line;
reset_screen();
printf("Bootloader %s", version);
check_battery();
printf("=========================");
line += FAILSAFE_OPTIONS;
printf("");
printf(" [NAVI] to confirm.");
printf(" [REC] to set as default.");
printf("");
if (firmware_settings.initialized)
{
defopt = firmware_settings.bootmethod;
if (defopt < 0 || defopt >= FAILSAFE_OPTIONS)
defopt = option;
}
while (current_tick - start_tick < TIMEOUT)
{
/* Draw the menu. */
line = 3;
for (i = 0; i < FAILSAFE_OPTIONS; i++)
{
char *def = "[DEF]";
char *arrow = "->";
if (i != defopt)
def = "";
if (i != option)
arrow = " ";
printf("%s %s %s", arrow, options[i], def);
}
snprintf(buf, sizeof(buf), "Time left: %ds",
(TIMEOUT - (current_tick - start_tick)) / HZ);
lcd_puts(0, 10, buf);
lcd_update();
button = button_get_w_tmo(HZ);
if (button == BUTTON_NONE || button & SYS_EVENT)
continue ;
start_tick = current_tick;
/* Ignore the ON/PLAY -button because it can cause trouble
with the RTC alarm mod. */
switch (button & ~(BUTTON_ON))
{
case BUTTON_UP:
case BUTTON_RC_REW:
if (option > 0)
option--;
break ;
case BUTTON_DOWN:
case BUTTON_RC_FF:
if (option < FAILSAFE_OPTIONS-1)
option++;
break ;
case BUTTON_SELECT:
case BUTTON_RC_ON:
goto execute;
case BUTTON_REC:
case BUTTON_RC_REC:
if (firmware_settings.initialized)
{
firmware_settings.bootmethod = option;
eeprom_settings_store();
defopt = option;
}
break ;
}
}
execute:
lcd_puts(0, 10, "Executing command...");
lcd_update();
sleep(HZ);
reset_screen();
switch (option)
{
case BOOT_DISK:
return ;
case BOOT_RAM:
start_flashed_ramimage();
printf("Image not found");
break;
case BOOT_ROM:
start_flashed_romimage();
printf("Image not found");
break;
}
shutdown();
}
#endif
/* get rid of a nasty humming sound during boot
-> RESET signal */
inline static void __uda1380_reset_hi(void)
{
#ifdef HAVE_UDA1380
or_l(1<<29, &GPIO_OUT);
or_l(1<<29, &GPIO_ENABLE);
or_l(1<<29, &GPIO_FUNCTION);
#endif
}
inline static void __uda1380_reset_lo(void)
{
#ifdef HAVE_UDA1380
and_l(~(1<<29), &GPIO_OUT);
#endif
}
void main(void)
{
int i;
int rc;
bool rc_on_button = false;
bool on_button = false;
bool rec_button = false;
bool hold_status = false;
int data;
extern int line; /* From common.c */
extern int remote_line; /* From common.c */
/* We want to read the buttons as early as possible, before the user
releases the ON button */
/* Set GPIO33, GPIO37, GPIO38 and GPIO52 as general purpose inputs
(The ON and Hold buttons on the main unit and the remote) */
or_l(0x00100062, &GPIO1_FUNCTION);
and_l(~0x00100062, &GPIO1_ENABLE);
data = GPIO1_READ;
if ((data & 0x20) == 0)
on_button = true;
if ((data & 0x40) == 0)
rc_on_button = true;
/* Set the default state of the hard drive power to OFF */
ide_power_enable(false);
power_init();
/* Turn off if neither ON button is pressed */
if (!(on_button || rc_on_button))
{
__reset_cookie();
power_off();
}
__uda1380_reset_hi();
/* Start with the main backlight OFF. */
_backlight_init();
_backlight_off();
/* Remote backlight ON */
#ifdef HAVE_REMOTE_LCD
_remote_backlight_on();
#endif
system_init();
kernel_init();
__uda1380_reset_lo();
#ifdef HAVE_ADJUSTABLE_CPU_FREQ
/* Set up waitstates for the peripherals */
set_cpu_frequency(0); /* PLL off */
#ifdef CPU_COLDFIRE
coldfire_set_pllcr_audio_bits(DEFAULT_PLLCR_AUDIO_BITS);
#endif
#endif
set_irq_level(0);
#ifdef HAVE_EEPROM_SETTINGS
initialize_eeprom();
#endif
usb_init();
/* A small delay after usb_init is necessary to read the I/O port correctly
(if ports are read _immediately_ after the init). */
/* sleep(1); */
adc_init();
button_init();
/* Only check remote hold status if remote power button was actually used. */
if (rc_on_button)
{
lcd_remote_init();
/* Allow the button driver to check the buttons */
sleep(HZ/50);
if (remote_button_hold())
hold_status = true;
}
/* Check main hold switch status too. */
if (on_button && button_hold())
{
hold_status = true;
}
/* Power on the hard drive early, to speed up the loading. */
if (!hold_status
# ifdef HAVE_EEPROM_SETTINGS
&& !recovery_mode
# endif
)
{
ide_power_enable(true);
}
# ifdef HAVE_EEPROM_SETTINGS
if (!hold_status && (usb_detect() != USB_INSERTED) && !recovery_mode)
try_flashboot();
# endif
backlight_init();
lcd_init();
if (!rc_on_button)
lcd_remote_init();
/* Bootloader uses simplified backlight thread, so we need to enable
remote display here. */
if (remote_detect())
lcd_remote_on();
font_init();
lcd_setfont(FONT_SYSFIXED);
printf("Rockbox boot loader");
printf("Version %s", version);
/* No need to wait here more because lcd_init and others already do that. */
// sleep(HZ/50); /* Allow the button driver to check the buttons */
rec_button = ((button_status() & BUTTON_REC) == BUTTON_REC)
|| ((button_status() & BUTTON_RC_REC) == BUTTON_RC_REC);
check_battery();
/* Don't start if the Hold button is active on the device you
are starting with */
if ((usb_detect() != USB_INSERTED) && (hold_status
#ifdef HAVE_EEPROM_SETTINGS
|| recovery_mode
#endif
))
{
if (detect_original_firmware())
{
printf("Hold switch on");
shutdown();
}
#ifdef HAVE_EEPROM_SETTINGS
failsafe_menu();
#endif
}
/* Holding REC while starting runs the original firmware */
if (detect_original_firmware() && rec_button)
{
printf("Starting original firmware...");
start_iriver_fw();
}
/* A hack to enter USB mode without using the USB thread */
if(usb_detect() == USB_INSERTED)
{
const char msg[] = "Bootloader USB mode";
int w, h;
font_getstringsize(msg, &w, &h, FONT_SYSFIXED);
reset_screen();
lcd_putsxy((LCD_WIDTH-w)/2, (LCD_HEIGHT-h)/2, msg);
lcd_update();
#ifdef HAVE_REMOTE_LCD
lcd_remote_puts(0, 3, msg);
lcd_remote_update();
#endif
#ifdef HAVE_EEPROM_SETTINGS
if (firmware_settings.initialized)
{
firmware_settings.disk_clean = false;
eeprom_settings_store();
}
#endif
ide_power_enable(true);
ata_enable(false);
sleep(HZ/20);
usb_enable(true);
cpu_idle_mode(true);
while (usb_detect() == USB_INSERTED)
{
/* Print the battery status. */
line = 0;
remote_line = 0;
check_battery();
ata_spin(); /* Prevent the drive from spinning down */
sleep(HZ);
/* Backlight OFF */
_backlight_off();
}
cpu_idle_mode(false);
usb_enable(false);
reset_screen();
lcd_update();
}
rc = ata_init();
if(rc)
{
reset_screen();
printf("ATA error: %d", rc);
printf("Insert USB cable and press");
printf("a button");
while(!(button_get(true) & BUTTON_REL));
}
disk_init();
rc = disk_mount_all();
if (rc<=0)
{
reset_screen();
printf("No partition found");
while(button_get(true) != SYS_USB_CONNECTED) {};
}
printf("Loading firmware");
i = load_firmware((unsigned char *)DRAM_START, BOOTFILE, MAX_LOADSIZE);
if(i < 0)
printf("Error: %s", strerror(i));
if (i == EOK)
start_firmware();
if (!detect_original_firmware())
{
printf("No firmware found on disk");
sleep(HZ*2);
shutdown();
}
else {
sleep(HZ*2);
start_iriver_fw();
}
}
/* These functions are present in the firmware library, but we reimplement
them here because the originals do a lot more than we want */
void screen_dump(void)
{
}
int usb_screen(void)
{
return 0;
}
unsigned short *bidi_l2v(const unsigned char *str, int orientation)
{
static unsigned short utf16_buf[SCROLL_LINE_SIZE];
unsigned short *target;
(void)orientation;
target = utf16_buf;
while (*str)
str = utf8decode(str, target++);
*target = 0;
return utf16_buf;
}
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