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
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2016 by Roman Stolyarov
*
* 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 "config.h"
#include "jz4760b.h"
#include "../kernel-internal.h"
#include "backlight.h"
#include "font.h"
#include "lcd.h"
#include "file.h"
#include "usb.h"
#include "system.h"
#include "button.h"
#include "common.h"
#include "rb-loader.h"
#include "loader_strerror.h"
#include "storage.h"
#include "file_internal.h"
#include "disk.h"
#include "string.h"
#include "adc.h"
#include "version.h"
#include "xdebug.h"
extern void show_logo(void);
extern void power_off(void);
#ifdef HAVE_BOOTLOADER_USB_MODE
static void show_splash(int timeout, const char *msg)
{
reset_screen();
lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * strlen(msg))) / 2,
(LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
lcd_update();
sleep(timeout);
}
static int usb_inited = 0;
static void usb_mode(void)
{
int button;
/* Init USB, but only once */
if (!usb_inited) {
usb_init();
usb_start_monitoring();
usb_inited = 1;
}
/* Wait for threads to connect */
show_splash(HZ/2, "Waiting for USB");
while (1)
{
button = button_get_w_tmo(HZ/2);
if (button == SYS_USB_CONNECTED)
break; /* Hit */
}
if (button == SYS_USB_CONNECTED)
{
/* Got the message - wait for disconnect */
show_splash(0, "Bootloader USB mode");
usb_acknowledge(SYS_USB_CONNECTED_ACK);
while (1)
{
button = button_get(true);
if (button == SYS_USB_DISCONNECTED)
break;
}
}
}
#endif
/* Jump to loaded binary */
void exec(void* addr) __attribute__((noinline, noreturn, section(".icode")));
void exec(void* addr)
{
commit_discard_idcache();
typedef void(*entry_fn)(void) __attribute__((noreturn));
entry_fn fn = (entry_fn)addr;
fn();
}
static int boot_rockbox(void)
{
int rc;
printf("Mounting disk...\n");
while((rc = disk_mount_all()) <= 0)
{
verbose = true;
#ifdef HAVE_BOOTLOADER_USB_MODE
error(EDISK, rc, false);
usb_mode();
#else
error(EDISK, rc, true);
#endif
}
printf("Loading firmware...\n");
rc = load_firmware((unsigned char *)CONFIG_SDRAM_START, BOOTFILE, 0x400000);
if(rc <= EFILE_EMPTY)
return rc;
else
{
printf("Starting Rockbox...\n");
adc_close(); /* Disable SADC, seems to fix the re-init Rockbox does */
disable_interrupt();
exec((void*) CONFIG_SDRAM_START);
return 0; /* Shouldn't happen */
}
}
#if 0
static void reset_configuration(void)
{
int rc;
rc = disk_mount_all();
if (rc <= 0)
{
verbose = true;
error(EDISK,rc, true);
}
if(rename(ROCKBOX_DIR "/config.cfg", ROCKBOX_DIR "/config.old") == 0)
show_splash(HZ/2, "Configuration reset successfully!");
else
show_splash(HZ/2, "Couldn't reset configuration!");
}
#endif
int main(void)
{
int rc;
serial_puts("\n\nSPL Stage 2\n\n");
system_init();
kernel_init();
lcd_init();
font_init();
lcd_setfont(FONT_SYSFIXED);
backlight_init();
show_logo();
rc = storage_init();
if(rc)
{
verbose = true;
error(EATA, rc, true);
}
filesystem_init();
/* Don't mount the disks yet, there could be file system/partition errors
which are fixable in USB mode */
#ifdef HAVE_BOOTLOADER_USB_MODE
button_init();
int btn = button_read_device();
/* Enter USB mode if USB is plugged and PLAY button is pressed */
if(btn & BUTTON_PLAY) {
if(usb_detect() == USB_INSERTED)
usb_mode();
}
#endif /* HAVE_BOOTLOADER_USB_MODE */
reset_screen();
printf(MODEL_NAME" Rockbox Bootloader\n");
printf("Version %s\n", rbversion);
rc = boot_rockbox();
if(rc <= EFILE_EMPTY)
{
verbose = true;
printf("Error: %s", loader_strerror(rc));
}
/* Halt */
while (1)
core_idle();
return 0;
}
|
