1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2008 by Rafaël Carré
*
* Based on Rockbox iriver bootloader by Linus Nielsen Feltzing
* and the ipodlinux bootloader by Daniel Palffy and Bernard Leach
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <stdio.h>
#include <system.h>
#include <inttypes.h>
#include "config.h"
#include "gcc_extensions.h"
#include "../kernel-internal.h"
#include "lcd.h"
#ifdef HAVE_BOOTLOADER_USB_MODE
#include "usb.h"
#include "sysfont.h"
#endif /* HAVE_BOOTLOADER_USB_MODE */
#include "backlight.h"
#include "button-target.h"
#include "common.h"
#include "rb-loader.h"
#include "loader_strerror.h"
#include "storage.h"
#include "file_internal.h"
#include "disk.h"
#include "panic.h"
#include "power.h"
void show_logo(void);
#ifdef HAVE_BOOTLOADER_USB_MODE
static void usb_mode(void)
{
if(usb_detect() != USB_INSERTED)
{
static const char msg[] = "Plug USB cable";
reset_screen();
lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * sizeof(msg))) / 2,
(LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
lcd_update();
/* wait until USB is plugged */
while(usb_detect() != USB_INSERTED) ;
}
static const char msg[] = "Bootloader USB mode";
reset_screen();
lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * sizeof(msg))) / 2,
(LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
lcd_update();
while(usb_detect() == USB_INSERTED)
sleep(HZ);
reset_screen();
lcd_update();
}
#endif /* HAVE_BOOTLOADER_USB_MODE */
void main(void) NORETURN_ATTR;
void main(void)
{
unsigned char* loadbuffer;
int buffer_size;
void(*kernel_entry)(void);
int ret;
system_init();
kernel_init();
enable_irq();
lcd_init();
show_logo();
backlight_init();
button_init_device();
int btn = button_read_device();
#if !defined(SANSA_FUZE) && !defined(SANSA_CLIP) && !defined(SANSA_CLIPV2) \
&& !defined(SANSA_CLIPPLUS) && !defined(SANSA_CLIPZIP)
if (button_hold())
{
verbose = true;
lcd_clear_display();
printf("Hold switch on");
printf("Shutting down...");
sleep(HZ);
power_off();
}
#endif
/* Enable bootloader messages if any button is pressed */
if (btn)
{
lcd_clear_display();
verbose = true;
}
ret = storage_init();
if(ret < 0)
error(EATA, ret, true);
filesystem_init();
#ifdef HAVE_BOOTLOADER_USB_MODE
usb_init();
/* Enter USB mode if USB is plugged and SELECT button is pressed */
if(btn & BUTTON_SELECT) {
usb_start_monitoring();
if(usb_detect() == USB_INSERTED)
usb_mode();
}
#endif /* HAVE_BOOTLOADER_USB_MODE */
while((ret = disk_mount_all()) <= 0)
{
#ifdef HAVE_BOOTLOADER_USB_MODE
error(EDISK, ret, false);
usb_start_monitoring();
usb_mode();
#else
error(EDISK, ret, true);
#endif
}
printf("Loading firmware");
loadbuffer = (unsigned char*)DRAM_ORIG; /* DRAM */
buffer_size = (int)(loadbuffer + (DRAM_SIZE) - TTB_SIZE);
while((ret = load_firmware(loadbuffer, BOOTFILE, buffer_size)) <= EFILE_EMPTY)
{
#ifdef HAVE_BOOTLOADER_USB_MODE
error(EBOOTFILE, ret, false);
usb_start_monitoring();
usb_mode();
#else
error(EBOOTFILE, ret, true);
#endif
}
#if defined(SANSA_FUZEV2) || defined(SANSA_CLIPPLUS) || defined(SANSA_CLIPZIP)
/* It is necessary for proper detection AMSv2 variant 1.
* We should restore initial state of GPIOB_PIN(5) as it used for
* variant detection, but can be changed if we switch SD card. */
if (amsv2_variant == 1)
GPIOB_PIN(5) = 1 << 5;
#endif
kernel_entry = (void*) loadbuffer;
commit_discard_idcache();
printf("Executing");
kernel_entry();
printf("ERR: Failed to boot");
/* never returns */
while(1) ;
}
|
