bootloader: Consolidate xDuoo X3ii/X20 and AGPTek Rocker bootloaders

Bonus changes:

 * boot mode selection stored on SD card

Change-Id: I225a06d149ae71c1882f632c30d0fe4ab5308a74

3 files changed, 50 insertions, 581 deletions

diff --git a/bootloader/SOURCES b/bootloader/SOURCES
index 82ddcb80b9..b0d3e26e07 100644
--- a/bootloader/SOURCES
+++ b/bootloader/SOURCES
@@ -76,10 +76,8 @@ show_logo.c
 mpio_hd200_hd300.c
 #elif defined(SONY_NWZ_LINUX)
 nwz_linux.c
-#elif defined(AGPTEK_ROCKER)
+#elif defined(AGPTEK_ROCKER) || defined(XDUOO_X3II) || defined(XDUOO_X20)
 rocker_linux.c
-#elif (defined(XDUOO_X3II) || defined(XDUOO_X20))
-xduoo_linux.c
 #elif defined(RK27_GENERIC) || defined(HM60X) || defined(HM801) \
       || defined(MA9) || defined(MA9C) || defined(MA8) || defined(MA8C) \
       || defined(IHIFI760) || defined(IHIFI960) || defined(IHIFI800) \
diff --git a/bootloader/rocker_linux.c b/bootloader/rocker_linux.c
index 80b3bfbab5..e3985ce100 100644
--- a/bootloader/rocker_linux.c
+++ b/bootloader/rocker_linux.c
@@ -9,6 +9,7 @@
  *
  * Copyright (C) 2016 by Amaury Pouly
  *               2018 by Marcin Bukat
+ *               2018 by Roman Stolyarov
  *
  * Based on Rockbox iriver bootloader by Linus Nielsen Feltzing
  * and the ipodlinux bootloader by Daniel Palffy and Bernard Leach
@@ -45,9 +46,24 @@
 #include <stdarg.h>
 #include "version.h"
 
-/* all images must have the following size */
+/* Basic configuration */
+#if defined(AGPTEK_ROCKER)
 #define ICON_WIDTH  70
 #define ICON_HEIGHT 70
+#define RBFILE "rockbox.rocker"
+#elif defined(XDUOO_X3II)
+#define ICON_WIDTH  130
+#define ICON_HEIGHT 130
+#define RBFILE "rockbox.x3ii"
+#elif defined(XDUOO_X20)
+#define ICON_WIDTH  130
+#define ICON_HEIGHT 130
+#define RBFILE "rockbox.x20"
+#else
+#error "must define ICON_WIDTH/HEIGHT"
+#endif
+
+#define BASE_DIR "/mnt/sd_0"
 
 /* images */
 #include "bitmaps/rockboxicon.h"
@@ -68,14 +84,20 @@
 #error toolsicon has the wrong resolution
 #endif
 
-#ifndef BUTTON_REW
-#define BUTTON_REW  BUTTON_LEFT
+#ifndef BUTTON_LEFT
+#define BUTTON_LEFT   BUTTON_REW
+#endif
+#ifndef BUTTON_RIGHT
+#define BUTTON_RIGHT  BUTTON_FF
+#endif
+#ifndef BUTTON_SELECT
+#define BUTTON_SELECT BUTTON_PLAY
 #endif
-#ifndef BUTTON_FF
-#define BUTTON_FF   BUTTON_RIGHT
+#ifndef BUTTON_DOWN
+#define BUTTON_DOWN BUTTON_NEXT
 #endif
-#ifndef BUTTON_PLAY
-#define BUTTON_PLAY BUTTON_SELECT
+#ifndef BUTTON_UP
+#define BUTTON_UP BUTTON_PREV
 #endif
 
 /* return icon y position (x is always centered) */
@@ -143,7 +165,7 @@ static enum boot_mode inactivity_action(enum boot_mode cur_selection)
  * (since the mostly suspends instead of powering down) */
 static enum boot_mode load_boot_mode(enum boot_mode mode)
 {
-    int fd = open("/data/rb_bl_mode.txt", O_RDONLY);
+    int fd = open(BASE_DIR "/.rockbox/rb_bl_mode.txt", O_RDONLY);
     if(fd >= 0)
     {
         read(fd, &mode, sizeof(mode));
@@ -154,7 +176,7 @@ static enum boot_mode load_boot_mode(enum boot_mode mode)
 
 static void save_boot_mode(enum boot_mode mode)
 {
-    int fd = open("/data/rb_bl_mode.txt", O_RDWR | O_CREAT | O_TRUNC);
+    int fd = open(BASE_DIR "/.rockbox/rb_bl_mode.txt", O_RDWR | O_CREAT | O_TRUNC);
     if(fd >= 0)
     {
         write(fd, &mode, sizeof(mode));
@@ -250,12 +272,12 @@ static enum boot_mode get_boot_mode(void)
         if(btn & BUTTON_REPEAT)
             btn &= ~BUTTON_REPEAT;
         /* play -> stop loop and return mode */
-        if(btn == BUTTON_PLAY)
+        if(btn == BUTTON_SELECT)
             break;
         /* left/right/up/down: change mode */
-        if(btn == BUTTON_LEFT || btn == BUTTON_DOWN || btn == BUTTON_REW)
+        if(btn == BUTTON_LEFT || btn == BUTTON_DOWN)
             mode = (mode + BOOT_COUNT - 1) % BOOT_COUNT;
-        if(btn == BUTTON_RIGHT || btn == BUTTON_UP || btn == BUTTON_FF)
+        if(btn == BUTTON_RIGHT || btn == BUTTON_UP)
             mode = (mode + 1) % BOOT_COUNT;
     }
 
@@ -323,10 +345,10 @@ int choice_screen(const char *title, bool center, int nr_choices, const char *ch
         if(btn & BUTTON_REPEAT)
             btn &= ~BUTTON_REPEAT;
         /* play -> stop loop and return mode */
-        if(btn == BUTTON_PLAY || btn == BUTTON_LEFT)
+        if(btn == BUTTON_SELECT || btn == BUTTON_LEFT)
         {
             free(buf);
-            return btn == BUTTON_PLAY ? choice : -1;
+            return btn == BUTTON_SELECT ? choice : -1;
         }
         /* left/right/up/down: change mode */
         if(btn == BUTTON_UP)
@@ -338,7 +360,7 @@ int choice_screen(const char *title, bool center, int nr_choices, const char *ch
 
 void run_file(const char *name)
 {
-    char *dirname = "/mnt/sd_0/";
+    char *dirname = BASE_DIR;
     char *buf = malloc(strlen(dirname) + strlen(name) + 1);
     sprintf(buf, "%s%s", dirname, name);
 
@@ -380,7 +402,7 @@ void run_script_menu(void)
 {
     const char **entries = NULL;
     int nr_entries = 0;
-    DIR *dir = opendir("/mnt/sd_0");
+    DIR *dir = opendir(BASE_DIR);
     struct dirent *ent;
     while((ent = readdir(dir)))
     {
@@ -443,10 +465,14 @@ static void tools_screen(void)
     {
         run_script_menu();
     }
-//    else if(choice == 2)
-//        nwz_power_restart();
+    else if(choice == 3)
+    {
+        system_reboot();
+    }
     else if(choice == 4)
+    {
         power_off();
+    }
 }
 
 #if 0
@@ -454,7 +480,7 @@ static void tools_screen(void)
 static int open_log(void)
 {
     /* open regular log file */
-    int fd = open("/mnt/sd_0/rockbox.log", O_RDWR | O_CREAT | O_APPEND);
+    int fd = open(BASE_DIR "/rockbox.log", O_RDWR | O_CREAT | O_APPEND);
     /* get its size */
     struct stat stat;
     if(fstat(fd, &stat) != 0)
@@ -464,9 +490,9 @@ static int open_log(void)
         return fd;
     close(fd);
     /* move file */
-    rename("/mnt/sd_0/rockbox.log", "/mnt_sd_0/rockbox.log.1");
+    rename(BASE_DIR "/rockbox.log", BASE_DIR "/rockbox.log.1");
     /* re-open the file, truncate in case the move was unsuccessful */
-    return open("/mnt/sd_0/rockbox.log", O_RDWR | O_CREAT | O_APPEND | O_TRUNC);
+    return open(BASE_DIR "/rockbox.log", O_RDWR | O_CREAT | O_APPEND | O_TRUNC);
 }
 #endif
 
@@ -529,8 +555,8 @@ int main(int argc, char **argv)
         else if(mode == BOOT_ROCKBOX)
         {
             fflush(stdout);
-            system("/bin/cp /mnt/sd_0/.rockbox/rockbox.rocker /tmp");
-            execl("/tmp/rockbox.rocker", "rockbox.rocker", NULL);
+            system("/bin/cp " BASE_DIR "/.rockbox/" RBFILE " /tmp");
+            execl("/tmp/" RBFILE, RBFILE, NULL);
             printf("execvp failed: %s\n", strerror(errno));
             /* fallback to OF in case of failure */
             error_screen("Cannot boot Rockbox");
diff --git a/bootloader/xduoo_linux.c b/bootloader/xduoo_linux.c
deleted file mode 100644
index 1071c6dc9b..0000000000
--- a/bootloader/xduoo_linux.c
+++ /dev/null
@@ -1,555 +0,0 @@
-/***************************************************************************
- *             __________               __   ___.
- *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
- *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
- *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
- *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
- *                     \/            \/     \/    \/            \/
- *
- *
- * Copyright (C) 2016 by Amaury Pouly
- *               2018 by Marcin Bukat
- *               2018 by Roman Stolyarov
- *
- * Based on Rockbox iriver bootloader by Linus Nielsen Feltzing
- * and the ipodlinux bootloader by Daniel Palffy and Bernard Leach
- *
- * 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 "system.h"
-#include "lcd.h"
-#include "backlight.h"
-#include "button-target.h"
-#include "button.h"
-#include "../kernel/kernel-internal.h"
-#include "core_alloc.h"
-#include "filesystem-app.h"
-#include "lcd.h"
-#include "font.h"
-#include "power.h"
-#include <string.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <dirent.h>
-#include <sys/wait.h>
-#include <stdarg.h>
-#include "version.h"
-
-/* all images must have the following size */
-#define ICON_WIDTH  130
-#define ICON_HEIGHT 130
-
-/* images */
-#include "bitmaps/rockboxicon.h"
-#include "bitmaps/hibyicon.h"
-#include "bitmaps/toolsicon.h"
-
-/* don't issue an error when parsing the file for dependencies */
-#if defined(BMPWIDTH_rockboxicon) && (BMPWIDTH_rockboxicon != ICON_WIDTH || \
-    BMPHEIGHT_rockboxicon != ICON_HEIGHT)
-#error rockboxicon has the wrong resolution
-#endif
-#if defined(BMPWIDTH_hibyicon) && (BMPWIDTH_hibyicon != ICON_WIDTH || \
-    BMPHEIGHT_hibyicon != ICON_HEIGHT)
-#error hibyicon has the wrong resolution
-#endif
-#if defined(BMPWIDTH_toolsicon) && (BMPWIDTH_toolsicon != ICON_WIDTH || \
-    BMPHEIGHT_toolsicon != ICON_HEIGHT)
-#error toolsicon has the wrong resolution
-#endif
-
-#ifndef BUTTON_UP
-#define BUTTON_UP    BUTTON_PREV
-#endif
-#ifndef BUTTON_DOWN
-#define BUTTON_DOWN  BUTTON_NEXT
-#endif
-#ifndef BUTTON_ENTER
-#define BUTTON_ENTER BUTTON_PLAY
-#endif
-
-/* return icon y position (x is always centered) */
-static int get_icon_y(void)
-{
-    int h;
-    lcd_getstringsize("X", NULL, &h);
-    return ((LCD_HEIGHT - ICON_HEIGHT)/2) - h;
-}
-
-/* Important Note: this bootloader is carefully written so that in case of
- * error, the OF is run. This seems like the safest option since the OF is
- * always there and might do magic things. */
-
-enum boot_mode
-{
-    BOOT_ROCKBOX,
-    BOOT_TOOLS,
-    BOOT_OF,
-    BOOT_COUNT,
-    BOOT_USB, /* special */
-    BOOT_STOP, /* power down/suspend */
-};
-
-static void display_text_center(int y, const char *text)
-{
-    int width;
-    lcd_getstringsize(text, &width, NULL);
-    lcd_putsxy(LCD_WIDTH / 2 - width / 2, y, text);
-}
-
-static void display_text_centerf(int y, const char *format, ...)
-{
-    char buf[1024];
-    va_list ap;
-    va_start(ap, format);
-
-    vsnprintf(buf, sizeof(buf), format, ap);
-    display_text_center(y, buf);
-}
-
-/* get timeout before taking action if the user doesn't touch the device */
-static int get_inactivity_tmo(void)
-{
-#if defined(HAS_BUTTON_HOLD)
-    if(button_hold())
-        return 5 * HZ; /* Inactivity timeout when on hold */
-    else
-#endif
-        return 10 * HZ; /* Inactivity timeout when not on hold */
-}
-
-/* return action on idle timeout */
-static enum boot_mode inactivity_action(enum boot_mode cur_selection)
-{
-#if defined(HAS_BUTTON_HOLD)
-    if(button_hold())
-        return BOOT_STOP; /* power down/suspend */
-    else
-#endif
-        return cur_selection; /* return last choice */
-}
-
-/* we store the boot mode in a file in /tmp so we can reload it between 'boots'
- * (since the mostly suspends instead of powering down) */
-static enum boot_mode load_boot_mode(enum boot_mode mode)
-{
-    int fd = open("/data/rb_bl_mode.txt", O_RDONLY);
-    if(fd >= 0)
-    {
-        read(fd, &mode, sizeof(mode));
-        close(fd);
-    }
-    return mode;
-}
-
-static void save_boot_mode(enum boot_mode mode)
-{
-    int fd = open("/data/rb_bl_mode.txt", O_RDWR | O_CREAT | O_TRUNC);
-    if(fd >= 0)
-    {
-        write(fd, &mode, sizeof(mode));
-        close(fd);
-    }
-}
-
-static enum boot_mode get_boot_mode(void)
-{
-    /* load previous mode, or start with rockbox if none */
-    enum boot_mode init_mode = load_boot_mode(BOOT_ROCKBOX);
-    /* wait for user action */
-    enum boot_mode mode = init_mode;
-    int last_activity = current_tick;
-#if defined(HAS_BUTTON_HOLD)
-    bool hold_status = button_hold();
-#endif
-    while(true)
-    {
-        /* on usb detect, return to usb
-         * FIXME this is a hack, we need proper usb detection */
-        if(power_input_status() & POWER_INPUT_USB_CHARGER)
-        {
-            /* save last choice */
-            save_boot_mode(mode);
-            return BOOT_USB;
-        }
-        /* inactivity detection */
-        int timeout = last_activity + get_inactivity_tmo();
-        if(TIME_AFTER(current_tick, timeout))
-        {
-            /* save last choice */
-            save_boot_mode(mode);
-            return inactivity_action(mode);
-        }
-        /* redraw */
-        lcd_clear_display();
-        /* display top text */
-#if defined(HAS_BUTTON_HOLD)
-        if(button_hold())
-        {
-            lcd_set_foreground(LCD_RGBPACK(255, 0, 0));
-            display_text_center(0, "ON HOLD!");
-        }
-        else
-#endif
-        {
-            lcd_set_foreground(LCD_RGBPACK(255, 201, 0));
-            display_text_center(0, "SELECT PLAYER");
-        }
-        lcd_set_foreground(LCD_RGBPACK(255, 201, 0));
-        /* display icon */
-        const struct bitmap *icon = (mode == BOOT_OF) ? &bm_hibyicon :
-            (mode == BOOT_ROCKBOX) ? &bm_rockboxicon : &bm_toolsicon;
-        lcd_bmp(icon, (LCD_WIDTH - ICON_WIDTH) / 2, get_icon_y());
-        /* display bottom description */
-        const char *desc = (mode == BOOT_OF) ? "HIBY PLAYER" :
-            (mode == BOOT_ROCKBOX) ? "ROCKBOX" : "TOOLS";
-
-        int desc_height;
-        lcd_getstringsize(desc, NULL, &desc_height);
-        display_text_center(LCD_HEIGHT - 3*desc_height, desc);
-
-        /* display arrows */
-        int arrow_width, arrow_height;
-        lcd_getstringsize("<", &arrow_width, &arrow_height);
-        int arrow_y = get_icon_y() + ICON_HEIGHT / 2 - arrow_height / 2;
-        lcd_putsxy(arrow_width / 2, arrow_y, "<");
-        lcd_putsxy(LCD_WIDTH - 3 * arrow_width / 2, arrow_y, ">");
-
-        lcd_set_foreground(LCD_RGBPACK(0, 255, 0));
-        display_text_centerf(LCD_HEIGHT - arrow_height * 3 / 2, "timeout in %d sec",
-            (timeout - current_tick + HZ - 1) / HZ);
-
-        lcd_update();
-
-        /* wait for a key  */
-        int btn = button_get_w_tmo(HZ / 10);
-
-#if defined(HAS_BUTTON_HOLD)
-        /* record action, changing HOLD counts as action */
-        if(btn & BUTTON_MAIN || hold_status != button_hold())
-            last_activity = current_tick;
-
-        hold_status = button_hold();
-#else
-        if(btn & BUTTON_MAIN)
-            last_activity = current_tick;
-#endif
-        /* ignore release, allow repeat */
-        if(btn & BUTTON_REL)
-            continue;
-        if(btn & BUTTON_REPEAT)
-            btn &= ~BUTTON_REPEAT;
-        /* play -> stop loop and return mode */
-        if(btn == BUTTON_ENTER)
-            break;
-        /* left/right/up/down: change mode */
-        if(btn == BUTTON_UP || btn == BUTTON_VOL_UP)
-            mode = (mode + BOOT_COUNT - 1) % BOOT_COUNT;
-        if(btn == BUTTON_DOWN || btn == BUTTON_VOL_DOWN)
-            mode = (mode + 1) % BOOT_COUNT;
-    }
-
-    /* save mode */
-    save_boot_mode(mode);
-    return mode;
-}
-
-void error_screen(const char *msg)
-{
-    lcd_clear_display();
-    lcd_putsf(0, 0, msg);
-    lcd_update();
-}
-
-int choice_screen(const char *title, bool center, int nr_choices, const char *choices[])
-{
-    int choice = 0;
-    int max_len = 0;
-    int h;
-    lcd_getstringsize("x", NULL, &h);
-    for(int i = 0; i < nr_choices; i++)
-    {
-        int len = strlen(choices[i]);
-        if(len > max_len)
-            max_len = len;
-    }
-    char *buf = malloc(max_len + 10);
-    int top_y = 2 * h;
-    int nr_lines = (LCD_HEIGHT - top_y) / h;
-    while(true)
-    {
-        /* make sure choice is visible */
-        int offset = choice - nr_lines / 2;
-        if(offset < 0)
-            offset = 0;
-        lcd_clear_display();
-        /* display top text */
-        lcd_set_foreground(LCD_RGBPACK(255, 201, 0));
-        display_text_center(0, title);
-        int line = 0;
-        for(int i = 0; i < nr_choices && line < nr_lines; i++)
-        {
-            if(i < offset)
-                continue;
-            if(i == choice)
-                lcd_set_foreground(LCD_RGBPACK(255, 0, 0));
-            else
-                lcd_set_foreground(LCD_RGBPACK(255, 201, 0));
-            sprintf(buf, "%s", choices[i]);
-            if(center)
-                display_text_center(top_y + h * line, buf);
-            else
-                lcd_putsxy(0, top_y + h * line, buf);
-            line++;
-        }
-
-        lcd_update();
-
-        /* wait for a key  */
-        int btn = button_get_w_tmo(HZ / 10);
-        /* ignore release, allow repeat */
-        if(btn & BUTTON_REL)
-            continue;
-        if(btn & BUTTON_REPEAT)
-            btn &= ~BUTTON_REPEAT;
-        /* play -> stop loop and return mode */
-        if(btn == BUTTON_ENTER)
-        {
-            free(buf);
-            return btn == BUTTON_ENTER ? choice : -1;
-        }
-        /* left/right/up/down: change mode */
-        if(btn == BUTTON_UP || btn == BUTTON_VOL_UP)
-            choice = (choice + nr_choices - 1) % nr_choices;
-        if(btn == BUTTON_DOWN || btn == BUTTON_VOL_DOWN)
-            choice = (choice + 1) % nr_choices;
-    }
-}
-
-void run_file(const char *name)
-{
-    char *dirname = "/mnt/sd_0/";
-    char *buf = malloc(strlen(dirname) + strlen(name) + 1);
-    sprintf(buf, "%s%s", dirname, name);
-
-    lcd_clear_display();
-    lcd_set_foreground(LCD_RGBPACK(255, 201, 0));
-    lcd_putsf(0, 0, "Running %s", name);
-    lcd_update();
-
-    pid_t pid = fork();
-    if(pid == 0)
-    {
-        execlp("sh", "sh", buf, NULL);
-        _exit(42);
-    }
-    int status;
-    waitpid(pid, &status, 0);
-    if(WIFEXITED(status))
-    {
-        lcd_set_foreground(LCD_RGBPACK(255, 201, 0));
-        lcd_putsf(0, 1, "program returned %d", WEXITSTATUS(status));
-    }
-    else
-    {
-        lcd_set_foreground(LCD_RGBPACK(255, 0, 0));
-        lcd_putsf(0, 1, "an error occured: %x", status);
-    }
-    lcd_set_foreground(LCD_RGBPACK(255, 0, 0));
-    lcd_putsf(0, 3, "Press any key or wait");
-    lcd_update();
-    /* wait a small time */
-    sleep(HZ);
-    /* ignore event */
-    while(button_get(false) != 0) {}
-    /* wait for any key or timeout */
-    button_get_w_tmo(4 * HZ);
-}
-
-void run_script_menu(void)
-{
-    const char **entries = NULL;
-    int nr_entries = 0;
-    DIR *dir = opendir("/mnt/sd_0");
-    struct dirent *ent;
-    while((ent = readdir(dir)))
-    {
-        if(ent->d_type != DT_REG)
-            continue;
-        entries = realloc(entries, (nr_entries + 1) * sizeof(const char *));
-        entries[nr_entries++] = strdup(ent->d_name);
-    }
-    closedir(dir);
-    int idx = choice_screen("RUN SCRIPT", false, nr_entries, entries);
-    if(idx >= 0)
-        run_file(entries[idx]);
-    for(int i = 0; i < nr_entries; i++)
-        free((char *)entries[i]);
-    free(entries);
-}
-
-static void adb(int start)
-{
-    pid_t pid = fork();
-    if(pid == 0)
-    {
-        execlp("/etc/init.d/K90adb", "K90adb", start ? "start" : "stop", NULL);
-        _exit(42);
-    }
-    int status;
-    waitpid(pid, &status, 0);
-#if 0
-    if(WIFEXITED(status))
-    {
-        lcd_set_foreground(LCD_RGBPACK(255, 201, 0));
-        lcd_putsf(0, 1, "program returned %d", WEXITSTATUS(status));
-    }
-    else
-    {
-        lcd_set_foreground(LCD_RGBPACK(255, 0, 0));
-        lcd_putsf(0, 1, "an error occured: %x", status);
-    }
-#endif
-}
-
-static void tools_screen(void)
-{
-    const char *choices[] = {"ADB start", "ADB stop", "Run script", "Restart", "Shutdown"};
-    int choice = choice_screen("TOOLS MENU", true, 5, choices);
-    if(choice == 0)
-    {
-        /* run service menu */
-        printf("Starting ADB service...\n");
-        fflush(stdout);
-        adb(1);
-    }
-    else if(choice == 1)
-    {
-        printf("Stopping ADB service...\n");
-        fflush(stdout);
-        adb(0);
-    }
-    else if(choice == 2)
-    {
-        run_script_menu();
-    }
-    else if(choice == 3)
-        system_reboot();
-    else if(choice == 4)
-        power_off();
-}
-
-#if 0
-/* open log file */
-static int open_log(void)
-{
-    /* open regular log file */
-    int fd = open("/mnt/sd_0/rockbox.log", O_RDWR | O_CREAT | O_APPEND);
-    /* get its size */
-    struct stat stat;
-    if(fstat(fd, &stat) != 0)
-        return fd; /* on error, don't do anything */
-    /* if file is too large, rename it and start a new log file */
-    if(stat.st_size < 1000000)
-        return fd;
-    close(fd);
-    /* move file */
-    rename("/mnt/sd_0/rockbox.log", "/mnt/sd_0/rockbox.log.1");
-    /* re-open the file, truncate in case the move was unsuccessful */
-    return open("/mnt/sd_0/rockbox.log", O_RDWR | O_CREAT | O_APPEND | O_TRUNC);
-}
-#endif
-
-int main(int argc, char **argv)
-{
-    (void) argc;
-    (void) argv;
-#if 0
-    /* redirect stdout and stderr to have error messages logged somewhere on the
-     * user partition */
-    int fd = open_log();
-    if(fd >= 0)
-    {
-        dup2(fd, fileno(stdout));
-        dup2(fd, fileno(stderr));
-        close(fd);
-    }
-    /* print version */
-    printf("Rockbox boot loader\n");
-    printf("Version: %s\n", rbversion);
-    printf("%s\n", MODEL_NAME);
-#endif
-
-    system_init();
-    core_allocator_init();
-    kernel_init();
-    paths_init();
-    lcd_init();
-    font_init();
-    button_init();
-    backlight_init();
-    backlight_set_brightness(DEFAULT_BRIGHTNESS_SETTING);
-
-    /* try to load the extra font we install on the device */
-    //int font_id = font_load("/usr/rockbox/fonts/20-Terminus-Bold.fnt");
-    //if(font_id >= 0)
-    //    lcd_setfont(font_id);
-
-    /* run all tools menu */
-    while(true)
-    {
-        enum boot_mode mode = get_boot_mode();
-        if(mode == BOOT_USB || mode == BOOT_OF)
-        {
-#if 0
-            fflush(stdout);
-            fflush(stderr);
-            close(fileno(stdout));
-            close(fileno(stderr));
-#endif
-            /* for now the only way we have to trigger USB mode it to run the OF */
-            /* boot OF */
-            execvp("/usr/bin/hiby_player", argv);
-            error_screen("Cannot boot OF");
-            sleep(5 * HZ);
-        }
-        else if(mode == BOOT_TOOLS)
-        {
-            tools_screen();
-        }
-        else if(mode == BOOT_ROCKBOX)
-        {
-            fflush(stdout);
-#if defined(XDUOO_X3II)
-            system("/bin/cp /mnt/sd_0/.rockbox/rockbox.x3ii /tmp");
-            execl("/tmp/rockbox.x3ii", "rockbox.x3ii", NULL);
-#elif defined(XDUOO_X20)
-            system("/bin/cp /mnt/sd_0/.rockbox/rockbox.x20 /tmp");
-            execl("/tmp/rockbox.x20", "rockbox.x20", NULL);
-#endif
-            printf("execvp failed: %s\n", strerror(errno));
-            /* fallback to OF in case of failure */
-            error_screen("Cannot boot Rockbox");
-            sleep(5 * HZ);
-        }
-        else
-        {
-            printf("suspend\n");
-//            nwz_power_suspend();
-        }
-    }
-    /* if we reach this point, everything failed, so return an error so that
-     * sysmgrd knows something is wrong */
-    return 1;
-}