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[kugel-rb.git] / bootloader / telechips.c
blob98f8bebc38bcc501916535451f11cb4a62e90f8e
1 /***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id$
10 * Copyright (C) 2007 by Dave Chapman
12 * Based on Rockbox iriver bootloader by Linus Nielsen Feltzing
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License
16 * as published by the Free Software Foundation; either version 2
17 * of the License, or (at your option) any later version.
19 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
20 * KIND, either express or implied.
22 ****************************************************************************/
23 #include "config.h"
25 #include <stdlib.h>
26 #include <stdio.h>
27 #include <string.h>
28 #include "cpu.h"
29 #include "system.h"
30 #include "lcd.h"
31 #include "kernel.h"
32 #include "thread.h"
33 #include "storage.h"
34 #include "fat.h"
35 #include "disk.h"
36 #include "font.h"
37 #include "button.h"
38 #include "adc.h"
39 #include "adc-target.h"
40 #include "backlight.h"
41 #include "backlight-target.h"
42 #include "panic.h"
43 #include "power.h"
44 #include "file.h"
45 #include "common.h"
47 /* Show the Rockbox logo - in show_logo.c */
48 extern int show_logo(void);
50 /* Address to load main Rockbox image to */
51 #define LOAD_ADDRESS 0x20000000 /* DRAM_START */
53 char version[] = APPSVERSION;
55 extern int line;
57 #define MAX_LOAD_SIZE (8*1024*1024) /* Arbitrary, but plenty. */
59 /* The following function is just test/development code */
60 void show_debug_screen(void)
62 int button;
63 int power_count = 0;
64 int count = 0;
65 bool do_power_off = false;
67 lcd_puts_scroll(0,0,"+++ this is a very very long line to test scrolling. ---");
68 while (!do_power_off) {
69 line = 1;
70 button = button_get(false);
72 /* Power-off if POWER button has been held for a time
73 This loop is currently running at about 100 iterations/second
75 if (button & POWEROFF_BUTTON) {
76 power_count++;
77 if (power_count > 100)
78 do_power_off = true;
79 } else {
80 power_count = 0;
82 #if 0
83 if (button & BUTTON_SELECT){
84 _backlight_off();
86 else{
87 _backlight_on();
89 #endif
90 printf("Btn: 0x%08x",button);
91 #if 0
92 printf("Tick: %d",current_tick);
93 printf("GPIOA: 0x%08x",GPIOA);
94 printf("GPIOB: 0x%08x",GPIOB);
95 printf("GPIOC: 0x%08x",GPIOC);
96 printf("GPIOD: 0x%08x",GPIOD);
97 printf("GPIOE: 0x%08x",GPIOE);
98 #endif
100 #if 0
101 int i;
102 for (i = 0; i<4; i++)
104 printf("ADC%d: 0x%04x",i,adc_read(i));
106 #endif
107 count++;
108 printf("Count: %d",count);
109 lcd_update();
110 sleep(HZ/10);
114 lcd_clear_display();
115 line = 0;
116 printf("POWER-OFF");
118 /* Power-off */
119 power_off();
121 printf("(NOT) POWERED OFF");
122 while (true);
125 void* main(void)
127 #ifdef TCCBOOT
128 int rc;
129 unsigned char* loadbuffer = (unsigned char*)LOAD_ADDRESS;
130 #endif
132 system_init();
133 power_init();
135 kernel_init();
136 enable_irq();
138 lcd_init();
140 adc_init();
141 button_init();
142 backlight_init();
144 font_init();
145 lcd_setfont(FONT_SYSFIXED);
147 show_logo();
149 _backlight_on();
151 /* Only load the firmware if TCCBOOT is defined - this ensures SDRAM_START is
152 available for loading the firmware. Otherwise display the debug screen. */
153 #ifdef TCCBOOT
154 printf("Rockbox boot loader");
155 printf("Version %s", version);
157 printf("ATA");
158 rc = storage_init();
159 if(rc)
161 reset_screen();
162 error(EATA, rc);
165 printf("mount");
166 rc = disk_mount_all();
167 if (rc<=0)
169 error(EDISK,rc);
172 rc = load_firmware(loadbuffer, BOOTFILE, MAX_LOAD_SIZE);
174 if (rc < 0)
176 error(EBOOTFILE,rc);
178 else if (rc == EOK)
180 int(*kernel_entry)(void) = (void *) loadbuffer;
182 disable_irq();
183 rc = kernel_entry();
186 panicf("Boot failed!");
187 #else
188 show_debug_screen();
189 #endif
191 return 0;