bootloader/ondavx747.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2008 by Maurus Cuelenaere
  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 "config.h"
  23 #include "jz4740.h"
  24 #include "backlight.h"
  25 #include "font.h"
  26 #include "lcd.h"
  27 #include "file.h"
  28 #include "usb.h"
  29 #include "system.h"
  30 #include "button.h"
  31 #include "common.h"
  32 #include "storage.h"
  33 #include "disk.h"
  34 #include "string.h"
  35 #include "adc.h"
  36
  37 extern int show_logo(void);
  38 extern void power_off(void);
  39
  40 static void show_splash(int timeout, const char *msg)
  41 {
  42     reset_screen();
  43     lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * strlen(msg))) / 2,
  44                 (LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
  45     lcd_update();
  46
  47     sleep(timeout);
  48 }
  49
  50 static void usb_mode(void)
  51 {
  52     int button;
  53
  54     /* Init USB */
  55     usb_init();
  56     usb_start_monitoring();
  57
  58     /* Wait for threads to connect */
  59     show_splash(HZ/2, "Waiting for USB");
  60
  61     while (1)
  62     {
  63         button = button_get_w_tmo(HZ/2);
  64
  65         if (button == SYS_USB_CONNECTED)
  66             break; /* Hit */
  67     }
  68
  69     if (button == SYS_USB_CONNECTED)
  70     {
  71         /* Got the message - wait for disconnect */
  72         show_splash(0, "Bootloader USB mode");
  73
  74         usb_acknowledge(SYS_USB_CONNECTED_ACK);
  75
  76         while (1)
  77         {
  78             button = button_get(true);
  79             if (button == SYS_USB_DISCONNECTED)
  80             {
  81                 usb_acknowledge(SYS_USB_DISCONNECTED_ACK);
  82                 break;
  83             }
  84         }
  85     }
  86
  87     reset_screen();
  88 }
  89
  90 static int boot_of(void)
  91 {
  92     int fd, rc, len, i, checksum = 0;
  93     void (*kernel_entry)(int, void*, void*);
  94
  95     /* TODO: get this from the NAND flash instead of SD */
  96     fd = open("/ccpmp.bin", O_RDONLY);
  97     if(fd < 0)
  98         return EFILE_NOT_FOUND;
  99
 100     lseek(fd, 4, SEEK_SET);
 101     rc = read(fd, (char*)&len, 4); /* CPU is LE */
 102     if(rc < 4)
 103         return EREAD_IMAGE_FAILED;
 104
 105     len += 8;
 106     printf("Reading %d bytes...", len);
 107
 108     lseek(fd, 0, SEEK_SET);
 109     rc = read(fd, (void*)0x80004000, len);
 110     if(rc < len)
 111         return EREAD_IMAGE_FAILED;
 112
 113     close(fd);
 114
 115     for(i=0; i<len; i++)
 116         checksum += ((unsigned char*)0x80004000)[i];
 117
 118     *((unsigned int*)0x80004000) = checksum;
 119
 120     printf("Starting the OF...");
 121
 122     /* OF requires all clocks on */
 123     __cpm_start_all();
 124
 125     disable_interrupt();
 126     __dcache_writeback_all();
 127     __icache_invalidate_all();
 128
 129     for(i=8000; i>0; i--)
 130         asm volatile("nop\n");
 131
 132     kernel_entry = (void*) 0x80004008;
 133     kernel_entry(0, "Jan 10 2008", "15:34:42"); /* Reversed from the SPL */
 134
 135     return 0; /* Shouldn't happen */
 136 }
 137
 138 static int boot_rockbox(void)
 139 {
 140     int rc;
 141     void (*kernel_entry)(void);
 142
 143     printf("Loading firmware");
 144     rc = load_firmware((unsigned char *)CONFIG_SDRAM_START, BOOTFILE, 0x400000);
 145     if(rc < 0)
 146         return rc;
 147     else
 148     {
 149         printf("Starting Rockbox...");
 150         adc_close(); /* Disable SADC, seems to fix the re-init Rockbox does */
 151
 152         disable_interrupt();
 153         kernel_entry = (void*) CONFIG_SDRAM_START;
 154         kernel_entry();
 155
 156         return 0; /* Shouldn't happen */
 157     }
 158 }
 159
 160 #define RECT_X        (LCD_WIDTH/8)
 161 #define RECT_Y(i)     (LCD_HEIGHT/20 + LCD_HEIGHT/10*i + RECT_HEIGHT*i)
 162 #define RECT_WIDTH    (LCD_WIDTH*3/4)
 163 #define RECT_HEIGHT   (LCD_HEIGHT/ARRAYLEN(strings) - LCD_HEIGHT/10)
 164 #define TEXT_X(i)     (RECT_X + RECT_WIDTH/2 - strlen(strings[i])*SYSFONT_WIDTH/2)
 165 #define TEXT_Y(i)     (RECT_Y(i) + RECT_HEIGHT/2 - SYSFONT_HEIGHT/2)
 166 static int boot_menu(void)
 167 {
 168     const char* strings[] = {"Boot Rockbox", "Boot OF", "USB mode"};
 169     int button, touch;
 170     unsigned int i;
 171
 172     adc_init();
 173
 174 redraw:
 175     lcd_clear_display();
 176     for(i=0; i<ARRAYLEN(strings); i++)
 177     {
 178         lcd_drawrect(RECT_X, RECT_Y(i), RECT_WIDTH, RECT_HEIGHT);
 179         lcd_putsxy(TEXT_X(i), TEXT_Y(i), strings[i]);
 180     }
 181     lcd_update();
 182
 183     while(1)
 184     {
 185         button = button_get_w_tmo(HZ/4);
 186         if(button & (BUTTON_TOUCHSCREEN|BUTTON_REPEAT))
 187         {
 188             touch = button_get_data();
 189             unsigned int x = touch & 0xFFFF, y = touch >> 16;
 190             int found = -1;
 191             for(i=0; i<ARRAYLEN(strings); i++)
 192             {
 193                 if(x > RECT_X && x < RECT_X+RECT_WIDTH &&
 194                    y > RECT_Y(i) && y < RECT_Y(i)+RECT_HEIGHT)
 195                 {
 196                     found = i;
 197                     break;
 198                 }
 199             }
 200
 201             switch(found)
 202             {
 203                 case 0:
 204                     return boot_rockbox();
 205                 case 1:
 206                     return boot_of();
 207                 case 2:
 208                     usb_mode();
 209                     break;
 210             }
 211
 212             if(found != -1)
 213                 goto redraw;
 214         }
 215         else if(button & (BUTTON_POWER|BUTTON_REPEAT))
 216             power_off();
 217     }
 218 }
 219
 220 int main(void)
 221 {
 222     int rc;
 223 #ifdef HAVE_TOUCHSCREEN
 224     int dummy;
 225 #endif
 226
 227     kernel_init();
 228     lcd_init();
 229     font_init();
 230     lcd_setfont(FONT_SYSFIXED);
 231     button_init();
 232     backlight_init();
 233
 234     show_logo();
 235
 236     rc = storage_init();
 237     if(rc)
 238         error(EATA, rc);
 239
 240 #ifdef HAVE_TOUCHSCREEN
 241     rc = button_read_device(&dummy);
 242 #else
 243     rc = button_read_device();
 244 #endif
 245
 246     if(rc)
 247         verbose = true;
 248
 249 #ifdef BUTTON_VOL_UP
 250     if(rc & BUTTON_VOL_UP ||
 251 #endif
 252        0)
 253         rc = boot_menu();
 254
 255     if(verbose)
 256         reset_screen();
 257     printf(MODEL_NAME" Rockbox Bootloader");
 258     printf("Version "APPSVERSION);
 259
 260     rc = disk_mount_all();
 261     if (rc <= 0)
 262         error(EDISK,rc);
 263
 264 #ifdef HAS_BUTTON_HOLD
 265     if(button_hold())
 266         rc = boot_of();
 267     else
 268 #endif
 269         rc = boot_rockbox();
 270
 271     if(rc < 0)
 272         printf("Error: %s", strerror(rc));
 273
 274     /* Halt */
 275     while (1)
 276         core_idle();
 277
 278     return 0;
 279 }