bootloader/mini2440.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  *
   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 #if 0
  47 #include "dma-target.h"
  48 #include "uart-s3c2440.h"
  49 #endif
  50 #include "led-mini2440.h"
  51
  52 /* Show the Rockbox logo - in show_logo.c */
  53 extern int show_logo(void);
  54
  55
  56 int main(void)
  57 {
  58 #if 0
  59     /* required later */
  60     unsigned char* loadbuffer;
  61     int buffer_size;
  62     int rc;
  63     int(*kernel_entry)(void);
  64 #endif
  65     int start, elapsed;
  66
  67     led_init();
  68     clear_leds(LED_ALL);
  69     /* NB: something in system_init() prevents H-JTAG from downloading */
  70 /*    system_init(); */
  71     kernel_init();
  72 /*    enable_interrupt(IRQ_FIQ_STATUS); */
  73     backlight_init();
  74     lcd_init();
  75     lcd_setfont(FONT_SYSFIXED);
  76     button_init();
  77 #if 0
  78     dma_init();
  79     uart_init_device(UART_DEBUG);
  80 #endif
  81 /*    mini2440_test(); */
  82
  83 #if 1
  84     show_logo();
  85     /* pause here for now */
  86     led_flash(LED1|LED4, LED2|LED3);
  87 #endif
  88
  89
  90 #if 0
  91     /* TODO */
  92
  93     /* Show debug messages if button is pressed */
  94     if(button_read_device() & BUTTON_MENU)
  95         verbose = true;
  96
  97     printf("Rockbox boot loader");
  98     printf("Version %s", APPSVERSION);
  99
 100     rc = storage_init();
 101     if(rc)
 102     {
 103         reset_screen();
 104         error(EATA, rc);
 105     }
 106
 107     disk_init(IF_MD(0));
 108     rc = disk_mount_all();
 109     if (rc<=0)
 110     {
 111         error(EDISK,rc);
 112     }
 113
 114     printf("Loading firmware");
 115
 116     /* Flush out anything pending first */
 117     cpucache_invalidate();
 118
 119     loadbuffer = (unsigned char*) 0x31000000;
 120     buffer_size = (unsigned char*)0x31400000 - loadbuffer;
 121
 122     rc = load_firmware(loadbuffer, BOOTFILE, buffer_size);
 123     if(rc < 0)
 124         error(EBOOTFILE, rc);
 125
 126     printf("Loaded firmware %d\n", rc);
 127
 128 /*    storage_close(); */
 129     system_prepare_fw_start();
 130
 131     if (rc == EOK)
 132     {
 133         uart_printf ("entering kernel\n");
 134         cpucache_invalidate();
 135         kernel_entry = (void*) loadbuffer;
 136         rc = kernel_entry();
 137     }
 138
 139     uart_printf ("stopping %d\n", rc);
 140 #endif
 141
 142     /* end stop - should not get here */
 143     led_flash(LED_ALL, LED_NONE);
 144     while (1); /* avoid warning */
 145 }