summaryrefslogtreecommitdiffstats
path: root/bootloader/telechips.c
blob: 7563a186326526945b49baa29993273fe7ea16da (plain)
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
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
/***************************************************************************
 *             __________               __   ___.
 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
 *                     \/            \/     \/    \/            \/
 * $Id$
 *
 * Copyright (C) 2007 by Dave Chapman
 *
 * Based on Rockbox iriver bootloader by Linus Nielsen Feltzing
 * 
 * All files in this archive are subject to the GNU General Public License.
 * See the file COPYING in the source tree root for full license agreement.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 ****************************************************************************/
#include "config.h"

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "cpu.h"
#include "system.h"
#include "lcd.h"
#include "kernel.h"
#include "thread.h"
#include "ata.h"
#include "fat.h"
#include "disk.h"
#include "font.h"
#include "button.h"
#include "adc.h"
#include "adc-target.h"
#include "backlight.h"
#include "backlight-target.h"
#include "panic.h"
#include "power.h"
#include "file.h"
#include "common.h"

#if defined(COWON_D2)
#include "pcf50606.h"
#define LOAD_ADDRESS 0x20000000 /* DRAM_START */
#endif

char version[] = APPSVERSION;

extern int line;

#define MAX_LOAD_SIZE (8*1024*1024) /* Arbitrary, but plenty. */

/* The following function is just test/development code */
#ifdef CPU_TCC77X
void show_debug_screen(void)
{
    int button;
    int power_count = 0;
    int count = 0;
    bool do_power_off = false;

    lcd_puts_scroll(0,0,"this is a very long line to test scrolling");
    while(!do_power_off) {
        line = 1;
        button = button_get(false);

        /* Power-off if POWER button has been held for a long time
           This loop is currently running at about 100 iterations/second
         */
        if (button & POWEROFF_BUTTON) {
            power_count++;
            if (power_count > 200)
               do_power_off = true;
        } else {
            power_count = 0;
        }

        printf("Btn: 0x%08x",button);
        printf("Tick: %d",current_tick);

        printf("GPIOA: 0x%08x",GPIOA);
        printf("GPIOB: 0x%08x",GPIOB);
        printf("GPIOC: 0x%08x",GPIOC);
        printf("GPIOD: 0x%08x",GPIOD);
//        printf("GPIOE: 0x%08x",GPIOE);

#if 0
        int i;
        for (i = 0; i<4; i++)
        {
            printf("ADC%d: 0x%04x",i,adc_read(i));
        }
#endif
        count++;
        printf("Count: %d",count);
        sleep(HZ/10);

    }

    lcd_clear_display();
    line = 0;
    printf("POWER-OFF");

    /* Power-off */
    power_off();

    printf("(NOT) POWERED OFF");
    while (true);
}
#else /* !CPU_TCC77X */
void show_debug_screen(void)
{
    int button;
    int power_count = 0;
    int count = 0;
    bool do_power_off = false;
#ifdef HAVE_BUTTON_DATA
    unsigned int data;
#endif

    while(!do_power_off) {
        line = 0;
        printf("Hello World!");

#ifdef HAVE_BUTTON_DATA
        button = button_read_device(&data);
#else
        button = button_read_device();
#endif

        /* Power-off if POWER button has been held for a long time
           This loop is currently running at about 100 iterations/second
         */
        if (button & POWEROFF_BUTTON) {
            power_count++;
            if (power_count > 200)
               do_power_off = true;
        } else {
            power_count = 0;
        }

        printf("Btn: 0x%08x",button);

        count++;
        printf("Count: %d",count);
    }

    lcd_clear_display();
    line = 0;
    printf("POWER-OFF");

    /* Power-off */
    power_off();

    printf("(NOT) POWERED OFF");
    while (true);
}
#endif

void* main(void)
{
#if defined(COWON_D2) && defined(TCCBOOT)
    int rc;
    unsigned char* loadbuffer = (unsigned char*)LOAD_ADDRESS;
#endif

    power_init();
    system_init();
#ifndef COWON_D2
    /* The D2 doesn't enable threading or interrupts */
    kernel_init();
    enable_irq();
#endif
    lcd_init();

    adc_init();
    button_init();
    backlight_init();

    font_init();
    lcd_setfont(FONT_SYSFIXED);

    _backlight_on();

/* Only load the firmware if TCCBOOT is defined - this ensures SDRAM_START is
   available for loading the firmware. Otherwise display the debug screen. */
#if defined(COWON_D2) && defined(TCCBOOT)
    printf("Rockbox boot loader");
    printf("Version %s", version);

    printf("ATA");
    rc = ata_init();
    if(rc)
    {
        reset_screen();
        error(EATA, rc);
    }

    printf("mount");
    rc = disk_mount_all();
    if (rc<=0)
    {
        error(EDISK,rc);
    }

    rc = load_firmware(loadbuffer, BOOTFILE, MAX_LOAD_SIZE);

    if (rc < 0)
    {
        error(EBOOTFILE,rc);
    }
    else if (rc == EOK)
    {
        int(*kernel_entry)(void);

        kernel_entry = (void*) loadbuffer;
        rc = kernel_entry();
    }
#else
    show_debug_screen();
#endif

    return 0;
}

/* These functions are present in the firmware library, but we reimplement
   them here because the originals do a lot more than we want */
void usb_acknowledge(void)
{
}

void usb_wait_for_disconnect(void)
{
}