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  * 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 #include "lcd.h"
  22 #include "lcd-remote.h"
  23 #include "font.h"
  24 #include "system.h"
  25 #include <stdarg.h>
  26 #include <stdio.h>
  27 #include <stdbool.h>
  28 #include "cpu.h"
  29 #include "common.h"
  30 #include "power.h"
  31 #include "kernel.h"
  32
  33 /* TODO: Other bootloaders need to be adjusted to set this variable to true
  34    on a button press - currently only the ipod, H10 and Sansa versions do. */
  35 #if defined(IPOD_ARCH) || defined(IRIVER_H10)  || defined(IRIVER_H10_5GB) \
  36  || defined(SANSA_E200) || defined(SANSA_C200) || defined(GIGABEAT_F) \
  37  || defined(PHILIPS_SA9200) || (CONFIG_CPU == AS3525) || defined(COWON_D2)
  38 bool verbose = false;
  39 #else
  40 bool verbose = true;
  41 #endif
  42
  43 int line = 0;
  44 #ifdef HAVE_REMOTE_LCD
  45 int remote_line = 0;
  46 #endif
  47
  48 char printfbuf[256];
  49
  50 void reset_screen(void)
  51 {
  52     lcd_clear_display();
  53     line = 0;
  54 #ifdef HAVE_REMOTE_LCD
  55     lcd_remote_clear_display();
  56     remote_line = 0;
  57 #endif
  58 }
  59
  60 void printf(const char *format, ...)
  61 {
  62     int len;
  63     unsigned char *ptr;
  64     va_list ap;
  65     va_start(ap, format);
  66
  67     ptr = printfbuf;
  68     len = vsnprintf(ptr, sizeof(printfbuf), format, ap);
  69     va_end(ap);
  70
  71     lcd_puts(0, line++, ptr);
  72     if (verbose)
  73         lcd_update();
  74     if(line >= LCD_HEIGHT/SYSFONT_HEIGHT)
  75         line = 0;
  76 #ifdef HAVE_REMOTE_LCD
  77     lcd_remote_puts(0, remote_line++, ptr);
  78     if (verbose)
  79         lcd_remote_update();
  80     if(remote_line >= LCD_REMOTE_HEIGHT/SYSFONT_HEIGHT)
  81         remote_line = 0;
  82 #endif
  83 }
  84
  85 char *strerror(int error)
  86 {
  87     switch(error)
  88     {
  89     case EOK:
  90         return "OK";
  91     case EFILE_NOT_FOUND:
  92         return "File not found";
  93     case EREAD_CHKSUM_FAILED:
  94         return "Read failed (chksum)";
  95     case EREAD_MODEL_FAILED:
  96         return "Read failed (model)";
  97     case EREAD_IMAGE_FAILED:
  98         return "Read failed (image)";
  99     case EBAD_CHKSUM:
 100         return "Bad checksum";
 101     case EFILE_TOO_BIG:
 102         return "File too big";
 103     case EINVALID_FORMAT:
 104         return "Invalid file format";
 105     default:
 106         return "Unknown";
 107     }
 108 }
 109
 110 void error(int errortype, int error)
 111 {
 112     switch(errortype)
 113     {
 114     case EATA:
 115         printf("ATA error: %d", error);
 116         break;
 117
 118     case EDISK:
 119         printf("No partition found");
 120         break;
 121
 122     case EBOOTFILE:
 123         printf(strerror(error));
 124         break;
 125     }
 126
 127     lcd_update();
 128     sleep(5*HZ);
 129     power_off();
 130 }
 131
 132 /* Load firmware image in a format created by tools/scramble */
 133 int load_firmware(unsigned char* buf, char* firmware, int buffer_size)
 134 {
 135     int fd;
 136     int rc;
 137     int len;
 138     unsigned long chksum;
 139     char model[5];
 140     unsigned long sum;
 141     int i;
 142     char filename[MAX_PATH];
 143
 144     snprintf(filename,sizeof(filename),"/.rockbox/%s",firmware);
 145     fd = open(filename, O_RDONLY);
 146     if(fd < 0)
 147     {
 148         snprintf(filename,sizeof(filename),"/%s",firmware);
 149         fd = open(filename, O_RDONLY);
 150         if(fd < 0)
 151             return EFILE_NOT_FOUND;
 152     }
 153
 154     len = filesize(fd) - 8;
 155
 156     printf("Length: %x", len);
 157
 158     if (len > buffer_size)
 159         return EFILE_TOO_BIG;
 160
 161     lseek(fd, FIRMWARE_OFFSET_FILE_CRC, SEEK_SET);
 162
 163     rc = read(fd, &chksum, 4);
 164     chksum=betoh32(chksum); /* Rockbox checksums are big-endian */
 165     if(rc < 4)
 166         return EREAD_CHKSUM_FAILED;
 167
 168     printf("Checksum: %x", chksum);
 169
 170     rc = read(fd, model, 4);
 171     if(rc < 4)
 172         return EREAD_MODEL_FAILED;
 173
 174     model[4] = 0;
 175
 176     printf("Model name: %s", model);
 177     printf("Loading %s", firmware);
 178
 179     lseek(fd, FIRMWARE_OFFSET_FILE_DATA, SEEK_SET);
 180
 181     rc = read(fd, buf, len);
 182     if(rc < len)
 183         return EREAD_IMAGE_FAILED;
 184
 185     close(fd);
 186
 187     sum = MODEL_NUMBER;
 188
 189     for(i = 0;i < len;i++) {
 190         sum += buf[i];
 191     }
 192
 193     printf("Sum: %x", sum);
 194
 195     if(sum != chksum)
 196         return EBAD_CHKSUM;
 197
 198     return EOK;
 199 }
 200
 201 /* Load raw binary image. */
 202 int load_raw_firmware(unsigned char* buf, char* firmware, int buffer_size)
 203 {
 204     int fd;
 205     int rc;
 206     int len;
 207     char filename[MAX_PATH];
 208
 209     snprintf(filename,sizeof(filename),"%s",firmware);
 210     fd = open(filename, O_RDONLY);
 211     if(fd < 0)
 212     {
 213         return EFILE_NOT_FOUND;
 214     }
 215
 216     len = filesize(fd);
 217
 218     if (len > buffer_size)
 219         return EFILE_TOO_BIG;
 220
 221     rc = read(fd, buf, len);
 222     if(rc < len)
 223         return EREAD_IMAGE_FAILED;
 224
 225     close(fd);
 226     return len;
 227 }
 228
 229 /* These functions are present in the firmware library, but we reimplement
 230    them here because the originals do a lot more than we want */
 231 void reset_poweroff_timer(void)
 232 {
 233 }
 234
 235 int dbg_ports(void)
 236 {
 237    return 0;
 238 }
 239
 240 void mpeg_stop(void)
 241 {
 242 }
 243
 244 void sys_poweroff(void)
 245 {
 246 }