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