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 "dma-target.h"
  46 #include "uart-s3c2440.h"
  47 #include "led-mini2440.h"
  48 #include "version.h"
  49
  50
  51 int main(void)
  52 {
  53     unsigned char* loadbuffer;
  54     int buffer_size;
  55     int rc;
  56     int(*kernel_entry)(void);
  57
  58     led_init();
  59     clear_leds(LED_ALL);
  60     /* NB: something in system_init() prevents H-JTAG from downloading */
  61 /*    system_init(); */
  62     kernel_init();
  63 /*    enable_interrupt(IRQ_FIQ_STATUS); */
  64     backlight_init();
  65     lcd_init();
  66     lcd_setfont(FONT_SYSFIXED);
  67     button_init();
  68     dma_init();
  69
  70     uart_init();
  71     uart_init_device(DEBUG_UART_PORT);
  72
  73 /*    mini2440_test(); */
  74
  75     /* Show debug messages if button is pressed */
  76     int touch_data;
  77     if(button_read_device(&touch_data) & BUTTON_MENU)
  78         verbose = true;
  79
  80     printf("Rockbox boot loader");
  81     printf("Version " RBVERSION);
  82
  83     rc = storage_init();
  84     if(rc)
  85     {
  86         reset_screen();
  87         error(EATA, rc, true);
  88     }
  89
  90     disk_init(IF_MD(0));
  91     rc = disk_mount_all();
  92     if (rc<=0)
  93     {
  94         error(EDISK,rc, true);
  95     }
  96
  97     printf("Loading firmware");
  98
  99     /* Flush out anything pending first */
 100     cpucache_invalidate();
 101
 102     loadbuffer = (unsigned char*) 0x31000000;
 103     buffer_size = (unsigned char*)0x31400000 - loadbuffer;
 104
 105     rc = load_firmware(loadbuffer, BOOTFILE, buffer_size);
 106     if(rc < 0)
 107         error(EBOOTFILE, rc, true);
 108
 109     printf("Loaded firmware %d\n", rc);
 110
 111 /*    storage_close(); */
 112     system_prepare_fw_start();
 113
 114     if (rc == EOK)
 115     {
 116         cpucache_invalidate();
 117         kernel_entry = (void*) loadbuffer;
 118         rc = kernel_entry();
 119     }
 120
 121     /* end stop - should not get here */
 122     led_flash(LED_ALL, LED_NONE);
 123     while (1); /* avoid warning */
 124 }