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 #include "version.h"
  37
  38 extern void show_logo(void);
  39 extern void power_off(void);
  40
  41 static void show_splash(int timeout, const char *msg)
  42 {
  43     reset_screen();
  44     lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * strlen(msg))) / 2,
  45                 (LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
  46     lcd_update();
  47
  48     sleep(timeout);
  49 }
  50
  51 static void usb_mode(void)
  52 {
  53     int button;
  54
  55     /* Init USB */
  56     usb_init();
  57     usb_start_monitoring();
  58
  59     /* Wait for threads to connect */
  60     show_splash(HZ/2, "Waiting for USB");
  61
  62     while (1)
  63     {
  64         button = button_get_w_tmo(HZ/2);
  65
  66         if (button == SYS_USB_CONNECTED)
  67             break; /* Hit */
  68     }
  69
  70     if (button == SYS_USB_CONNECTED)
  71     {
  72         /* Got the message - wait for disconnect */
  73         show_splash(0, "Bootloader USB mode");
  74
  75         usb_acknowledge(SYS_USB_CONNECTED_ACK);
  76
  77         while (1)
  78         {
  79             button = button_get(true);
  80             if (button == SYS_USB_DISCONNECTED)
  81                 break;
  82         }
  83     }
  84 }
  85
  86 static int boot_of(void)
  87 {
  88     int fd, rc, len, i, checksum = 0;
  89     void (*kernel_entry)(int, void*, void*);
  90
  91     printf("Mounting disk...");
  92     rc = disk_mount_all();
  93     if (rc <= 0)
  94         error(EDISK, rc, true);
  95
  96     /* TODO: get this from the NAND flash instead of SD */
  97     fd = open("/ccpmp.bin", O_RDONLY);
  98     if(fd < 0)
  99         return EFILE_NOT_FOUND;
 100
 101     lseek(fd, 4, SEEK_SET);
 102     rc = read(fd, (char*)&len, 4); /* CPU is LE */
 103     if(rc < 4)
 104         return EREAD_IMAGE_FAILED;
 105
 106     len += 8;
 107     printf("Reading %d bytes...", len);
 108
 109     lseek(fd, 0, SEEK_SET);
 110     rc = read(fd, (void*)0x80004000, len);
 111     if(rc < len)
 112         return EREAD_IMAGE_FAILED;
 113
 114     close(fd);
 115
 116     for(i=0; i<len; i++)
 117         checksum += ((unsigned char*)0x80004000)[i];
 118
 119     *((unsigned int*)0x80004000) = checksum;
 120
 121     printf("Starting the OF...");
 122
 123     /* OF requires all clocks on */
 124     __cpm_start_all();
 125
 126     disable_interrupt();
 127     __dcache_writeback_all();
 128     __icache_invalidate_all();
 129
 130     for(i=8000; i>0; i--)
 131         asm volatile("nop\n");
 132
 133     kernel_entry = (void*) 0x80004008;
 134     kernel_entry(0, "Jan 10 2008", "15:34:42"); /* Reversed from the SPL */
 135
 136     return 0; /* Shouldn't happen */
 137 }
 138
 139 static int boot_rockbox(void)
 140 {
 141     int rc;
 142     void (*kernel_entry)(void);
 143
 144     printf("Mounting disk...");
 145     rc = disk_mount_all();
 146     if (rc <= 0)
 147         error(EDISK,rc, true);
 148
 149     printf("Loading firmware...");
 150     rc = load_firmware((unsigned char *)CONFIG_SDRAM_START, BOOTFILE, 0x400000);
 151     if(rc < 0)
 152         return rc;
 153     else
 154     {
 155         printf("Starting Rockbox...");
 156         adc_close(); /* Disable SADC, seems to fix the re-init Rockbox does */
 157
 158         disable_interrupt();
 159         kernel_entry = (void*) CONFIG_SDRAM_START;
 160         kernel_entry();
 161
 162         return 0; /* Shouldn't happen */
 163     }
 164 }
 165
 166 static void reset_configuration(void)
 167 {
 168     int rc;
 169
 170     rc = disk_mount_all();
 171     if (rc <= 0)
 172         error(EDISK,rc, true);
 173
 174     if(rename(ROCKBOX_DIR "/config.cfg", ROCKBOX_DIR "/config.old") == 0)
 175         show_splash(HZ/2, "Configuration reset successfully!");
 176     else
 177         show_splash(HZ/2, "Couldn't reset configuration!");
 178 }
 179
 180 #define RECT_X        (LCD_WIDTH/8)
 181 #define RECT_Y(i)     (LCD_HEIGHT/20 + LCD_HEIGHT/10*i + RECT_HEIGHT*i)
 182 #define RECT_WIDTH    (LCD_WIDTH*3/4)
 183 #define RECT_HEIGHT   (LCD_HEIGHT/ARRAYLEN(strings) - LCD_HEIGHT/10)
 184 #define TEXT_X(i)     (RECT_X + RECT_WIDTH/2 - strlen(strings[i])*SYSFONT_WIDTH/2)
 185 #define TEXT_Y(i)     (RECT_Y(i) + RECT_HEIGHT/2 - SYSFONT_HEIGHT/2)
 186 static int boot_menu(void)
 187 {
 188     const char* strings[] = {"Boot Rockbox", "Boot OF", "USB mode", "Reset Rockbox configuration"};
 189     int button, touch, poweroff_repeat = 0;
 190     unsigned int i;
 191
 192     verbose = true;
 193     adc_init();
 194
 195 redraw:
 196     lcd_clear_display();
 197     for(i=0; i<ARRAYLEN(strings); i++)
 198     {
 199         lcd_drawrect(RECT_X, RECT_Y(i), RECT_WIDTH, RECT_HEIGHT);
 200         lcd_putsxy(TEXT_X(i), TEXT_Y(i), strings[i]);
 201     }
 202     lcd_update();
 203
 204     while(1)
 205     {
 206         button = button_get_w_tmo(HZ/4);
 207         if(button & BUTTON_TOUCHSCREEN)
 208         {
 209             touch = button_get_data();
 210             unsigned int x = touch & 0xFFFF, y = touch >> 16;
 211             int found = -1;
 212             for(i=0; i<ARRAYLEN(strings); i++)
 213             {
 214                 if(x > RECT_X && x < RECT_X+RECT_WIDTH &&
 215                    y > RECT_Y(i) && y < RECT_Y(i)+RECT_HEIGHT)
 216                 {
 217                     found = i;
 218                     break;
 219                 }
 220             }
 221
 222             switch(found)
 223             {
 224                 case 0:
 225                     reset_screen();
 226                     boot_rockbox();
 227                     break;
 228                 case 1:
 229                     reset_screen();
 230                     boot_of();
 231                     break;
 232                 case 2:
 233                     usb_mode();
 234                     break;
 235                 case 3:
 236                     reset_configuration();
 237                     break;
 238             }
 239
 240             if(found != -1)
 241                 goto redraw;
 242         }
 243         else if(button & BUTTON_POWER)
 244     {
 245         if(poweroff_repeat++ > 8)
 246         power_off();
 247     }
 248     else
 249         poweroff_repeat = 0;
 250     }
 251 }
 252
 253 int main(void)
 254 {
 255     int rc;
 256 #ifdef HAVE_TOUCHSCREEN
 257     int dummy;
 258 #endif
 259
 260     kernel_init();
 261     lcd_init();
 262     font_init();
 263     lcd_setfont(FONT_SYSFIXED);
 264     button_init();
 265     backlight_init();
 266
 267     show_logo();
 268
 269     rc = storage_init();
 270     if(rc)
 271         error(EATA, rc, true);
 272
 273     /* Don't mount the disks yet, there could be file system/partition errors
 274        which are fixable in USB mode */
 275
 276 #ifdef HAVE_TOUCHSCREEN
 277     rc = button_read_device(&dummy);
 278 #else
 279     rc = button_read_device();
 280 #endif
 281
 282     if(rc)
 283         verbose = true;
 284
 285 #ifdef BUTTON_VOL_UP
 286     if(rc & BUTTON_VOL_UP ||
 287 #endif
 288 #ifdef BUTTON_POWER
 289        rc & BUTTON_POWER ||
 290 #endif
 291        0)
 292         rc = boot_menu();
 293
 294     if(verbose)
 295         reset_screen();
 296     printf(MODEL_NAME" Rockbox Bootloader");
 297     printf("Version " RBVERSION);
 298
 299 #ifdef HAS_BUTTON_HOLD
 300     if(button_hold())
 301         rc = boot_of();
 302     else
 303 #endif
 304         rc = boot_rockbox();
 305
 306     if(rc < 0)
 307         printf("Error: %s", strerror(rc));
 308
 309     /* Halt */
 310     while (1)
 311         core_idle();
 312
 313     return 0;
 314 }