195 lines
4.4 KiB
C
195 lines
4.4 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2007 by Dave Chapman
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*
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* Based on Rockbox iriver bootloader by Linus Nielsen Feltzing
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "cpu.h"
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#include "system.h"
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#include "lcd.h"
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#include "../kernel-internal.h"
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#include "storage.h"
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#include "file_internal.h"
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#include "disk.h"
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#include "font.h"
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#include "button.h"
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#include "adc.h"
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#include "adc-target.h"
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#include "backlight.h"
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#include "backlight-target.h"
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#include "panic.h"
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#include "power.h"
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#include "file.h"
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#include "common.h"
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#include "rb-loader.h"
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#include "loader_strerror.h"
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#include "version.h"
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/* Show the Rockbox logo - in show_logo.c */
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extern void show_logo(void);
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/* Address to load main Rockbox image to */
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#define LOAD_ADDRESS 0x20000000 /* DRAM_START */
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extern int line;
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#define MAX_LOAD_SIZE (8*1024*1024) /* Arbitrary, but plenty. */
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/* The following function is just test/development code */
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void show_debug_screen(void)
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{
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int button;
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int power_count = 0;
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int count = 0;
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bool do_power_off = false;
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lcd_puts_scroll(0,0,"+++ this is a very very long line to test scrolling. ---");
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while (!do_power_off) {
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line = 1;
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button = button_get(false);
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/* Power-off if POWER button has been held for a time
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This loop is currently running at about 100 iterations/second
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*/
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if (button & POWEROFF_BUTTON) {
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power_count++;
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if (power_count > 100)
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do_power_off = true;
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} else {
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power_count = 0;
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}
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#if 0
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if (button & BUTTON_SELECT){
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backlight_hw_off();
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}
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else{
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backlight_hw_on();
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}
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#endif
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printf("Btn: 0x%08x",button);
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#if 0
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printf("Tick: %d",current_tick);
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printf("GPIOA: 0x%08x",GPIOA);
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printf("GPIOB: 0x%08x",GPIOB);
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printf("GPIOC: 0x%08x",GPIOC);
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printf("GPIOD: 0x%08x",GPIOD);
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printf("GPIOE: 0x%08x",GPIOE);
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#endif
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#if 0
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int i;
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for (i = 0; i<4; i++)
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{
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printf("ADC%d: 0x%04x",i,adc_read(i));
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}
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#endif
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count++;
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printf("Count: %d",count);
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lcd_update();
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sleep(HZ/10);
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}
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lcd_clear_display();
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line = 0;
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printf("POWER-OFF");
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/* Power-off */
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power_off();
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printf("(NOT) POWERED OFF");
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while (true);
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}
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void* main(void)
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{
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#ifdef TCCBOOT
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int rc;
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unsigned char* loadbuffer = (unsigned char*)LOAD_ADDRESS;
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#endif
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system_init();
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power_init();
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kernel_init();
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enable_irq();
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lcd_init();
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adc_init();
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button_init();
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backlight_init();
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font_init();
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lcd_setfont(FONT_SYSFIXED);
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show_logo();
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backlight_hw_on();
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/* Only load the firmware if TCCBOOT is defined - this ensures SDRAM_START is
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available for loading the firmware. Otherwise display the debug screen. */
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#ifdef TCCBOOT
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printf("Rockbox boot loader");
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printf("Version %s", rbversion);
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printf("ATA");
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rc = storage_init();
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if(rc)
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{
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reset_screen();
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error(EATA, rc, true);
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}
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filesystem_init();
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printf("mount");
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rc = disk_mount_all();
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if (rc<=0)
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{
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error(EDISK,rc, true);
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}
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rc = load_firmware(loadbuffer, BOOTFILE, MAX_LOAD_SIZE);
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if (rc <= EFILE_EMPTY)
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{
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error(EBOOTFILE,rc, true);
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}
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else
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{
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int(*kernel_entry)(void) = (void *) loadbuffer;
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disable_irq();
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rc = kernel_entry();
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}
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panicf("Boot failed!");
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#else
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show_debug_screen();
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#endif
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return 0;
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}
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