bootloader/mini2440.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2009 by Bob Cousins, Lyre Project
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21
  22 /* Include Standard files */
  23 #include <stdlib.h>
  24 #include <stdio.h>
  25 #include "inttypes.h"
  26 #include "string.h"
  27 #include "cpu.h"
  28 #include "system.h"
  29 #include "lcd.h"
  30 #include "kernel.h"
  31 #include "thread.h"
  32 #include "storage.h"
  33 #include "fat.h"
  34 #include "disk.h"
  35 #include "font.h"
  36 #include "backlight.h"
  37 #include "button.h"
  38 #include "panic.h"
  39 #include "power.h"
  40 #include "file.h"
  41 #include "common.h"
  42 #include "sd.h"
  43 #include "backlight-target.h"
  44 #include "lcd-target.h"
  45 #include "debug-target.h"
  46 #include "dma-target.h"
  47 #include "uart-s3c2440.h"
  48 #include "led-mini2440.h"
  49
  50 /* Show the Rockbox logo - in show_logo.c */
  51 extern int show_logo(void);
  52
  53
  54 int main(void)
  55 {
  56     /* required later */
  57     unsigned char* loadbuffer;
  58     int buffer_size;
  59     int rc;
  60     int(*kernel_entry)(void);
  61
  62     led_init();
  63     clear_leds(LED_ALL);
  64     /* NB: something in system_init() prevents H-JTAG from downloading */
  65 /*    system_init(); */
  66     kernel_init();
  67 /*    enable_interrupt(IRQ_FIQ_STATUS); */
  68     backlight_init();
  69     lcd_init();
  70     lcd_setfont(FONT_SYSFIXED);
  71     button_init();
  72     dma_init();
  73     uart_init_device(UART_DEBUG);
  74
  75 /*    mini2440_test(); */
  76
  77     /* TODO */
  78
  79     /* Show debug messages if button is pressed */
  80     if(button_read_device() & BUTTON_MENU)
  81         verbose = true;
  82
  83     printf("Rockbox boot loader");
  84     printf("Version %s", APPSVERSION);
  85
  86     rc = storage_init();
  87     if(rc)
  88     {
  89         reset_screen();
  90         error(EATA, rc);
  91     }
  92
  93     disk_init(IF_MD(0));
  94     rc = disk_mount_all();
  95     if (rc<=0)
  96     {
  97         error(EDISK,rc);
  98     }
  99
 100     printf("Loading firmware");
 101
 102     /* Flush out anything pending first */
 103     cpucache_invalidate();
 104
 105     loadbuffer = (unsigned char*) 0x31000000;
 106     buffer_size = (unsigned char*)0x31400000 - loadbuffer;
 107
 108     rc = load_firmware(loadbuffer, BOOTFILE, buffer_size);
 109     if(rc < 0)
 110         error(EBOOTFILE, rc);
 111
 112     printf("Loaded firmware %d\n", rc);
 113
 114 /*    storage_close(); */
 115     system_prepare_fw_start();
 116
 117     if (rc == EOK)
 118     {
 119         cpucache_invalidate();
 120         kernel_entry = (void*) loadbuffer;
 121         rc = kernel_entry();
 122     }
 123
 124     /* end stop - should not get here */
 125     led_flash(LED_ALL, LED_NONE);
 126     while (1); /* avoid warning */
 127 }