summaryrefslogtreecommitdiffstats
path: root/bootloader/iriver_h300.c
blob: 4f4baf8cb5044cc2ae46919aca56f3d817491f7c (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
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
/***************************************************************************
 *             __________               __   ___.
 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
 *                     \/            \/     \/    \/            \/
 * $Id$
 *
 * Copyright (C) 2007 by Linus Nielsen Feltzing
 *
 * 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 <stdlib.h>
#include <stdio.h>
#include "inttypes.h"
#include "string.h"
#include "cpu.h"
#include "system.h"
#include "lcd.h"
#include "lcd-remote.h"
#include "scroll_engine.h"
#include "../kernel-internal.h"
#include "storage.h"
#include "file_internal.h"
#include "usb.h"
#include "disk.h"
#include "font.h"
#include "adc.h"
#include "backlight.h"
#include "backlight-target.h"
#include "button.h"
#include "panic.h"
#include "power.h"
#include "powermgmt.h"
#include "file.h"
#include "pcf50606.h"
#include "common.h"
#include "rb-loader.h"
#include "loader_strerror.h"
#include "rbunicode.h"
#include "isp1362.h"
#include "version.h"

#include <stdarg.h>

/* Maximum allowed firmware image size. 10MB is more than enough */
#define MAX_LOADSIZE (10*1024*1024)

#define DRAM_START 0x31000000

/* Reset the cookie for the crt0 crash check */
inline void __reset_cookie(void)
{
    asm(" move.l #0,%d0");
    asm(" move.l %d0,0x10017ffc");
}

void start_iriver_fw(void)
{
    asm(" move.w #0x2700,%sr");
    __reset_cookie();
    asm(" movec.l %d0,%vbr");
    asm(" move.l 0,%sp");
    asm(" lea.l 8,%a0");
    asm(" jmp (%a0)");
}

void start_firmware(void)
{
    asm(" move.w #0x2700,%sr");
    __reset_cookie();
    asm(" move.l %0,%%d0" :: "i"(DRAM_START));
    asm(" movec.l %d0,%vbr");
    asm(" move.l %0,%%sp" :: "m"(*(int *)DRAM_START));
    asm(" move.l %0,%%a0" :: "m"(*(int *)(DRAM_START+4)));
    asm(" jmp (%a0)");
}

void shutdown(void)
{
    printf("Shutting down...");

    /* We need to gracefully spin down the disk to prevent clicks. */
    if (ide_powered())
    {
        /* Make sure ATA has been initialized. */
        storage_init();

        /* And put the disk into sleep immediately. */
        storage_sleepnow();
    }

    sleep(HZ*2);

    backlight_hw_off();
    remote_backlight_hw_off();

    __reset_cookie();
    power_off();
}

/* Print the battery voltage (and a warning message). */
void check_battery(void)
{
    int battery_voltage, batt_int, batt_frac;

    battery_voltage = _battery_voltage();
    batt_int = battery_voltage / 1000;
    batt_frac = (battery_voltage % 1000) / 10;

    printf("Batt: %d.%02dV", batt_int, batt_frac);

    if (battery_voltage <= 310)
    {
        printf("WARNING! BATTERY LOW!!");
        sleep(HZ*2);
    }
}

/* From the pcf50606 driver */
extern unsigned char pcf50606_intregs[3];

/* From common.c */
extern int line;
extern int remote_line;

void main(void)
{
    int i;
    int rc;
    bool rc_on_button = false;
    bool on_button = false;
    bool rec_button = false;
    bool hold_status = false;
    int data;
    bool rtc_alarm;
    int button;
    int mask;
    bool usb_charge = false;

    /* We want to read the buttons as early as possible, before the user
       releases the ON button */

    /* Set GPIO33, GPIO37, GPIO38  and GPIO52 as general purpose inputs
       (The ON and Hold buttons on the main unit and the remote) */
    or_l(0x00100062, &GPIO1_FUNCTION);
    and_l(~0x00100062, &GPIO1_ENABLE);

    data = GPIO1_READ;
    if ((data & 0x20) == 0)
        on_button = true;

    if ((data & 0x40) == 0)
        rc_on_button = true;

    /* Set the default state of the hard drive power to OFF */
    ide_power_enable(false);

    power_init();

    /* Check the interrupt registers if it was an RTC alarm */
    rtc_alarm = (pcf50606_intregs[0] & 0x80)?true:false;

    /* Turn off if we believe the start was accidental */
    if(!(rtc_alarm || on_button || rc_on_button ||
         (usb_detect() == USB_INSERTED) || charger_inserted())) {
        __reset_cookie();
        power_off();
    }

    /* get rid of a nasty humming sound during boot */
    mask = disable_irq_save();
    pcf50606_write(0x3b, 0x00);  /* GPOOD2 high Z */
    pcf50606_write(0x3b, 0x07);  /* GPOOD2 low */
    restore_irq(mask);

    /* Start with the main backlight OFF. */
    backlight_hw_init();
    backlight_hw_off();

    remote_backlight_hw_on();

    system_init();
    kernel_init();

    /* Set up waitstates for the peripherals */
    set_cpu_frequency(0); /* PLL off */
    coldfire_set_pllcr_audio_bits(DEFAULT_PLLCR_AUDIO_BITS);
    enable_irq();

    isp1362_init();

    adc_init();
    button_init();

    lcd_init();
    lcd_remote_init();
    font_init();

    lcd_setfont(FONT_SYSFIXED);

    backlight_init(); /* BUGFIX backlight_init MUST BE AFTER lcd_init */

    printf("Rockbox boot loader");
    printf("Version %s", rbversion);

    sleep(HZ/50); /* Allow the button driver to check the buttons */
    rec_button = ((button_status() & BUTTON_REC) == BUTTON_REC)
        || ((button_status() & BUTTON_RC_REC) == BUTTON_RC_REC);

    check_battery();

    if(rtc_alarm)
        printf("RTC alarm detected");

    /* Don't start if the Hold button is active on the device you
       are starting with */
    if ((on_button && button_hold()) ||
         (rc_on_button && remote_button_hold()))
    {
        hold_status = true;
    }
    if (hold_status && !rtc_alarm && (usb_detect() != USB_INSERTED) &&
        !charger_inserted())
    {
        if (detect_original_firmware())
        {
            printf("Hold switch on");
            shutdown();
        }
    }

    /* Holding REC while starting runs the original firmware */
    if (detect_original_firmware() && rec_button)
    {
        printf("Starting original firmware...");
        start_iriver_fw();
    }

    /* enable usb charging for charge mode and disk mode */
    if (usb_detect() == USB_INSERTED)
    {
        usb_charging_enable(USB_CHARGING_ENABLE);
        usb_charge = true;
    }

    if(charger_inserted())
    {
        const char charging_msg[] = "Charging...";
        const char complete_msg[] = "Charging complete";
        const char *msg;
        int w, h;
        bool blink_toggle = false;
        bool request_start = false;

        cpu_idle_mode(true);

        while(charger_inserted() && !request_start)
        {
            button = button_get_w_tmo(HZ);

            switch(button)
            {
            case BUTTON_ON:
                request_start = true;
                break;

            case BUTTON_NONE: /* Timeout */

                if(charging_state())
                {
                    /* To be replaced with a nice animation */
                    blink_toggle = !blink_toggle;
                    msg = charging_msg;
                }
                else
                {
                    blink_toggle = true;
                    msg = complete_msg;
                }

                font_getstringsize(msg, &w, &h, FONT_SYSFIXED);
                reset_screen();
                if(blink_toggle)
                    lcd_putsxy((LCD_WIDTH-w)/2, (LCD_HEIGHT-h)/2, msg);

                check_battery();
                break;
            }
        }
        if(!request_start)
        {
            __reset_cookie();
            power_off();
        }

        cpu_idle_mode(false);
    }

    usb_init();

    /* A hack to enter USB mode without using the USB thread */
    if(usb_detect() == USB_INSERTED)
    {
        const char msg[] = "Bootloader USB mode";
        int w, h;
        font_getstringsize(msg, &w, &h, FONT_SYSFIXED);
        reset_screen();
        lcd_putsxy((LCD_WIDTH-w)/2, (LCD_HEIGHT-h)/2, msg);
        lcd_update();

        lcd_remote_puts(0, 3, msg);
        lcd_remote_update();

        ide_power_enable(true);
        storage_enable(false);
        sleep(HZ/20);
        usb_enable(true);
        cpu_idle_mode(true);
        while (usb_detect() == USB_INSERTED)
        {
            /* Print the battery status. */
            line = 0;
            remote_line = 0;
            check_battery();

            storage_spin(); /* Prevent the drive from spinning down */
            sleep(HZ);
        }

        cpu_idle_mode(false);
        usb_enable(false);

        reset_screen();
        lcd_update();
    }

    /* disable usb charging if we enabled it earlier */
    if (usb_charge)
    {
        usb_charging_enable(USB_CHARGING_DISABLE);
        usb_charge = false;
    }

    rc = storage_init();
    if(rc)
    {
        reset_screen();
        printf("ATA error: %d", rc);
        printf("Insert USB cable and press");
        printf("a button");
        while(!(button_get(true) & BUTTON_REL));
    }

    filesystem_init();

    rc = disk_mount_all();
    if (rc<=0)
    {
        reset_screen();
        printf("No partition found");
        while(button_get(true) != SYS_USB_CONNECTED) {};
    }

    printf("Loading firmware");
    i = load_firmware((unsigned char *)DRAM_START, BOOTFILE, MAX_LOADSIZE);
    if(i <= EFILE_EMPTY)
        printf("Error: %s", loader_strerror(i));

    if (i > 0)
        start_firmware();

    if (!detect_original_firmware())
    {
        printf("No firmware found on disk");
        sleep(HZ*2);
        shutdown();
    }
    else {
        sleep(HZ*2);
        start_iriver_fw();
    }
}

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

int usb_screen(void)
{
   return 0;
}

unsigned short *bidi_l2v(const unsigned char *str, int orientation)
{
    static unsigned short utf16_buf[SCROLL_LINE_SIZE];
    unsigned short *target;
    (void)orientation;

    target = utf16_buf;

    while (*str)
        str = utf8decode(str, target++);
    *target = 0;
    return utf16_buf;
}