bootloader/common.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id: main.c 11997 2007-01-13 09:08:18Z miipekk $
   9  *
  10  * Copyright (C) 2005 by Linus Nielsen Feltzing
  11  *
  12  * All files in this archive are subject to the GNU General Public License.
  13  * See the file COPYING in the source tree root for full license agreement.
  14  *
  15  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  16  * KIND, either express or implied.
  17  *
  18  ****************************************************************************/
  19 #include "lcd.h"
  20 #include "lcd-remote.h"
  21 #include "font.h"
  22 #include "system.h"
  23 #include <stdarg.h>
  24 #include <stdio.h>
  25 #include <stdbool.h>
  26 #include "cpu.h"
  27 #include "common.h"
  28 #include "power.h"
  29 #include "kernel.h"
  30
  31 /* TODO: Other bootloaders need to be adjusted to set this variable to true
  32    on a button press - currently only the ipod, H10 and Sansa versions do. */
  33 #if (defined(IPOD_ARCH) && !defined(IPOD_1G2G)) || defined(IRIVER_H10) \
  34  || defined(IRIVER_H10_5GB) ||  defined(SANSA_E200) || defined(GIGABEAT_F)
  35 bool verbose = false;
  36 #else
  37 bool verbose = true;
  38 #endif
  39
  40 int line = 0;
  41 #ifdef HAVE_REMOTE_LCD
  42 int remote_line = 0;
  43 #endif
  44
  45 char printfbuf[256];
  46
  47 void reset_screen(void)
  48 {
  49     lcd_clear_display();
  50     line = 0;
  51 #ifdef HAVE_REMOTE_LCD
  52     lcd_remote_clear_display();
  53     remote_line = 0;
  54 #endif
  55 }
  56
  57 void printf(const char *format, ...)
  58 {
  59     int len;
  60     unsigned char *ptr;
  61     va_list ap;
  62     va_start(ap, format);
  63
  64     ptr = printfbuf;
  65     len = vsnprintf(ptr, sizeof(printfbuf), format, ap);
  66     va_end(ap);
  67
  68     lcd_puts(0, line++, ptr);
  69     if (verbose)
  70         lcd_update();
  71     if(line >= LCD_HEIGHT/SYSFONT_HEIGHT)
  72         line = 0;
  73 #ifdef HAVE_REMOTE_LCD
  74     lcd_remote_puts(0, remote_line++, ptr);
  75     if (verbose)
  76         lcd_remote_update();
  77     if(remote_line >= LCD_REMOTE_HEIGHT/SYSFONT_HEIGHT)
  78         remote_line = 0;
  79 #endif
  80 }
  81
  82 char *strerror(int error)
  83 {
  84     switch(error)
  85     {
  86     case EOK:
  87         return "OK";
  88     case EFILE_NOT_FOUND:
  89         return "File not found";
  90     case EREAD_CHKSUM_FAILED:
  91         return "Read failed (chksum)";
  92     case EREAD_MODEL_FAILED:
  93         return "Read failed (model)";
  94     case EREAD_IMAGE_FAILED:
  95         return "Read failed (image)";
  96     case EBAD_CHKSUM:
  97         return "Bad checksum";
  98     case EFILE_TOO_BIG:
  99         return "File too big";
 100     case EINVALID_FORMAT:
 101         return "Invalid file format";
 102     default:
 103         return "Unknown";
 104     }
 105 }
 106
 107 void error(int errortype, int error)
 108 {
 109     switch(errortype)
 110     {
 111     case EATA:
 112         printf("ATA error: %d", error);
 113         break;
 114
 115     case EDISK:
 116         printf("No partition found");
 117         break;
 118
 119     case EBOOTFILE:
 120         printf(strerror(error));
 121         break;
 122     }
 123
 124     lcd_update();
 125     sleep(5*HZ);
 126     power_off();
 127 }
 128
 129 /* Load firmware image in a format created by tools/scramble */
 130 int load_firmware(unsigned char* buf, char* firmware, int buffer_size)
 131 {
 132     int fd;
 133     int rc;
 134     int len;
 135     unsigned long chksum;
 136     char model[5];
 137     unsigned long sum;
 138     int i;
 139     char filename[MAX_PATH];
 140
 141     snprintf(filename,sizeof(filename),"/.rockbox/%s",firmware);
 142     fd = open(filename, O_RDONLY);
 143     if(fd < 0)
 144     {
 145         snprintf(filename,sizeof(filename),"/%s",firmware);
 146         fd = open(filename, O_RDONLY);
 147         if(fd < 0)
 148             return EFILE_NOT_FOUND;
 149     }
 150
 151     len = filesize(fd) - 8;
 152
 153     printf("Length: %x", len);
 154
 155     if (len > buffer_size)
 156         return EFILE_TOO_BIG;
 157
 158     lseek(fd, FIRMWARE_OFFSET_FILE_CRC, SEEK_SET);
 159
 160     rc = read(fd, &chksum, 4);
 161     chksum=betoh32(chksum); /* Rockbox checksums are big-endian */
 162     if(rc < 4)
 163         return EREAD_CHKSUM_FAILED;
 164
 165     printf("Checksum: %x", chksum);
 166
 167     rc = read(fd, model, 4);
 168     if(rc < 4)
 169         return EREAD_MODEL_FAILED;
 170
 171     model[4] = 0;
 172
 173     printf("Model name: %s", model);
 174     printf("Loading %s", firmware);
 175
 176     lseek(fd, FIRMWARE_OFFSET_FILE_DATA, SEEK_SET);
 177
 178     rc = read(fd, buf, len);
 179     if(rc < len)
 180         return EREAD_IMAGE_FAILED;
 181
 182     close(fd);
 183
 184     sum = MODEL_NUMBER;
 185
 186     for(i = 0;i < len;i++) {
 187         sum += buf[i];
 188     }
 189
 190     printf("Sum: %x", sum);
 191
 192     if(sum != chksum)
 193         return EBAD_CHKSUM;
 194
 195     return EOK;
 196 }
 197
 198 /* Load raw binary image. */
 199 int load_raw_firmware(unsigned char* buf, char* firmware, int buffer_size)
 200 {
 201     int fd;
 202     int rc;
 203     int len;
 204     char filename[MAX_PATH];
 205
 206     snprintf(filename,sizeof(filename),"%s",firmware);
 207     fd = open(filename, O_RDONLY);
 208     if(fd < 0)
 209     {
 210         return EFILE_NOT_FOUND;
 211     }
 212
 213     len = filesize(fd);
 214
 215     if (len > buffer_size)
 216         return EFILE_TOO_BIG;
 217
 218     rc = read(fd, buf, len);
 219     if(rc < len)
 220         return EREAD_IMAGE_FAILED;
 221
 222     close(fd);
 223     return len;
 224 }
 225
 226 /* These functions are present in the firmware library, but we reimplement
 227    them here because the originals do a lot more than we want */
 228 void reset_poweroff_timer(void)
 229 {
 230 }
 231
 232 int dbg_ports(void)
 233 {
 234    return 0;
 235 }
 236
 237 void mpeg_stop(void)
 238 {
 239 }
 240
 241 void sys_poweroff(void)
 242 {
 243 }