1 /***************************************************************************
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
10 * Copyright (C) 2007 by Dave Chapman
12 * Based on Rockbox iriver bootloader by Linus Nielsen Feltzing
14 * All files in this archive are subject to the GNU General Public License.
15 * See the file COPYING in the source tree root for full license agreement.
17 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
18 * KIND, either express or implied.
20 ****************************************************************************/
37 #include "adc-target.h"
38 #include "backlight-target.h"
46 #define LOAD_ADDRESS 0x20000000 /* DRAM_START */
49 char version
[] = APPSVERSION
;
53 #define MAX_LOAD_SIZE (8*1024*1024) /* Arbitrary, but plenty. */
60 bool do_power_off
= false;
62 #if defined(COWON_D2) && defined(TCCBOOT)
64 unsigned char* loadbuffer
= (unsigned char*)LOAD_ADDRESS
;
80 lcd_setfont(FONT_SYSFIXED
);
84 /* Only load the firmware if TCCBOOT is defined - this ensures SDRAM_START is
85 available for loading the firmware. Otherwise display the debug screen. */
86 #if defined(COWON_D2) && defined(TCCBOOT)
87 printf("Rockbox boot loader");
88 printf("Version %s", version
);
99 rc
= disk_mount_all();
105 rc
= load_firmware(loadbuffer
, BOOTFILE
, MAX_LOAD_SIZE
);
113 int(*kernel_entry
)(void);
115 kernel_entry
= (void*) loadbuffer
;
120 while(!do_power_off
) {
122 printf("Hello World!");
124 button
= button_read_device();
126 /* Power-off if POWER button has been held for a long time
127 This loop is currently running at about 100 iterations/second
129 if (button
& POWEROFF_BUTTON
) {
131 if (power_count
> 200)
137 printf("Btn: 0x%08x",button
);
139 #if defined(COWON_D2)
142 printf("GPIOA: 0x%08x",GPIOA
);
143 printf("GPIOB: 0x%08x",GPIOB
);
144 printf("GPIOC: 0x%08x",GPIOC
);
145 printf("GPIOD: 0x%08x",GPIOD
);
146 printf("GPIOE: 0x%08x",GPIOE
);
148 for (i
= 0; i
<4; i
++)
150 printf("ADC%d: 0x%04x",i
,adc_read(i
));
153 /* TODO: Move this stuff out to a touchscreen driver and establish
154 how such a beast is going to work. Since it needs I2C read/write,
155 it can't easily go on an interrupt-based tick task. */
157 unsigned char buf
[] = { 0x2f, (0xE<<1) | 1, /* ADC start for X+Y */
160 i2c_write(0x10, buf
, 2);
161 i2c_readmem(0x10, 0x2e, buf
, 5);
162 x
= (buf
[2] << 2) | (buf
[3] & 3);
163 y
= (buf
[4] << 2) | ((buf
[3] & 0xC) >> 2);
164 printf("X: 0x%03x Y: 0x%03x",x
,y
);
166 x
= (x
*LCD_WIDTH
) / 1024;
167 y
= (y
*LCD_HEIGHT
) / 1024;
168 lcd_hline(x
-5, x
+5, y
);
169 lcd_vline(x
, y
-5, y
+5);
172 buf
[1] = (0xF<<1) | 1; /* ADC start for P1+P2 */
173 i2c_write(0x10, buf
, 2);
174 i2c_readmem(0x10, 0x2e, buf
, 5);
175 x
= (buf
[2] << 2) | (buf
[3] & 3);
176 y
= (buf
[4] << 2) | ((buf
[3] & 0xC) >> 2);
177 printf("P1: 0x%03x P2: 0x%03x",x
,y
);
182 printf("Count: %d",count
);
192 printf("(NOT) POWERED OFF");
198 /* These functions are present in the firmware library, but we reimplement
199 them here because the originals do a lot more than we want */
200 void usb_acknowledge(void)
204 void usb_wait_for_disconnect(void)