Avoid duplicated code, create a formatting function for FM frequency
[kugel-rb.git] / bootloader / main-e200r-installer.c
blob0a7b56b1b608e229c92f0d69a0663368a8979958
1 /***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id$
10 * Copyright (C) 2006 by Barry Wardell
12 * Based on Rockbox iriver bootloader by Linus Nielsen Feltzing
13 * and the ipodlinux bootloader by Daniel Palffy and Bernard Leach
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation; either version 2
18 * of the License, or (at your option) any later version.
20 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
21 * KIND, either express or implied.
23 ****************************************************************************/
25 #include <stdio.h>
26 #include <stdlib.h>
27 #include "common.h"
28 #include "cpu.h"
29 #include "file.h"
30 #include "system.h"
31 #include "kernel.h"
32 #include "lcd.h"
33 #include "font.h"
34 #include "storage.h"
35 #include "button.h"
36 #include "disk.h"
37 #include "crc32-mi4.h"
38 #include <string.h>
39 #include "i2c.h"
40 #include "backlight-target.h"
41 #include "power.h"
43 /* Bootloader version */
44 char version[] = APPSVERSION;
46 #define START_SECTOR_OF_ROM 1
47 #define ROMSECTOR_TO_HACK 63
48 #define HACK_OFFSET 498
49 #define KNOWN_CRC32 0x5a09c266 /* E200R CRC before patching */
50 #define PATCHED_CRC32 0x0a162b34 /* E200R CRC after patching */
52 static unsigned char knownBytes[] = {0x00, 0x24, 0x07, 0xe1};
53 static unsigned char changedBytes[] = {0xc0, 0x46, 0xc0, 0x46 };
55 /*
56 CRC32s of sector 63 from E200 bootloaders - so we can tell users if they're
57 trying to use e200rpatcher with a vanilla e200.
59 These are all known E200 bootloaders as of 8 November 2007.
63 static uint32_t e200_crcs[] =
65 0xbeceba58,
66 0x4e6b038f,
67 0x5e4f4219,
68 0xae087742,
69 0x3dd94852,
70 0x72fa69f3,
71 0x4ce0d10b
74 #define NUM_E200_CRCS ((int)((sizeof(e200_crcs) / sizeof(uint32_t))))
76 static bool is_e200(uint32_t crc)
78 int i;
80 for (i = 0 ; i < NUM_E200_CRCS ; i++)
82 if (crc == e200_crcs[i])
83 return true;
86 return false;
90 void* main(void)
92 int i;
93 int btn;
94 int num_partitions;
95 int crc32;
96 char sector[512];
97 struct partinfo* pinfo;
99 chksum_crc32gentab ();
101 system_init();
102 kernel_init();
103 lcd_init();
104 font_init();
105 button_init();
106 i2c_init();
107 _backlight_on();
109 lcd_set_foreground(LCD_WHITE);
110 lcd_set_background(LCD_BLACK);
111 lcd_clear_display();
113 btn = button_read_device();
114 verbose = true;
116 lcd_setfont(FONT_SYSFIXED);
118 printf("Rockbox e200R installer");
119 printf("Version: %s", version);
120 printf(MODEL_NAME);
121 printf("");
123 i=storage_init();
124 disk_init(IF_MV(0));
125 num_partitions = disk_mount_all();
127 if (num_partitions<=0)
129 error(EDISK,num_partitions);
132 pinfo = disk_partinfo(1);
134 #if 0 /* not needed in release builds */
135 printf("--- Partition info ---");
136 printf("start: %x", pinfo->start);
137 printf("size: %x", pinfo->size);
138 printf("type: %x", pinfo->type);
139 printf("reading: %x", (START_SECTOR_OF_ROM + ROMSECTOR_TO_HACK)*512);
140 #endif
142 storage_read_sectors(pinfo->start + START_SECTOR_OF_ROM + ROMSECTOR_TO_HACK,
143 1 , sector);
144 crc32 = chksum_crc32 (sector, 512);
146 #if 0 /* not needed in release builds */
147 printf("--- Hack Status ---");
148 printf("Sector checksum: %x", crc32);
149 #endif
151 if (crc32 == PATCHED_CRC32)
153 /* Bootloader already patched */
154 printf("Already unlocked");
155 printf("Proceed to Step 2");
156 } else if ((crc32 == KNOWN_CRC32) &&
157 !memcmp(&sector[HACK_OFFSET], knownBytes,
158 sizeof(knownBytes)/sizeof(*knownBytes)))
160 /* E200R bootloader detected - patch it */
161 memcpy(&sector[HACK_OFFSET], changedBytes,
162 sizeof(changedBytes)/sizeof(*changedBytes));
163 storage_write_sectors(
164 pinfo->start + START_SECTOR_OF_ROM + ROMSECTOR_TO_HACK,
165 1 , sector);
166 printf("Firmware unlocked");
167 printf("Proceed to Step 2");
168 } else if (is_e200(crc32))
170 printf("Vanilla E200 detected!");
171 printf("Please install using");
172 printf("Sansapatcher");
174 else
176 printf("Unknown bootloader");
177 printf("Rockbox installer cannot");
178 printf("continue");
181 /* Turn button lights off */
182 GPIOG_OUTPUT_VAL &=~0x80;
184 printf("");
186 if (button_hold())
187 printf("Release Hold and");
189 printf("Press any key to shutdown");
191 while(button_read_device() == BUTTON_NONE);
193 power_off();
195 return NULL;