179 lines
4.7 KiB
C
179 lines
4.7 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) 2008 by Rafaël Carré
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*
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* Based on Rockbox iriver bootloader by Linus Nielsen Feltzing
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* and the ipodlinux bootloader by Daniel Palffy and Bernard Leach
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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 <stdio.h>
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#include <system.h>
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#include <inttypes.h>
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#include "config.h"
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#include "gcc_extensions.h"
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#include "../kernel-internal.h"
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#include "lcd.h"
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#ifdef HAVE_BOOTLOADER_USB_MODE
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#include "usb.h"
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#include "sysfont.h"
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#endif /* HAVE_BOOTLOADER_USB_MODE */
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#include "backlight.h"
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#include "button-target.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 "storage.h"
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#include "file_internal.h"
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#include "disk.h"
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#include "panic.h"
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#include "power.h"
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void show_logo(void);
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#ifdef HAVE_BOOTLOADER_USB_MODE
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static void usb_mode(void)
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{
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if(usb_detect() != USB_INSERTED)
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{
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static const char msg[] = "Plug USB cable";
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reset_screen();
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lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * sizeof(msg))) / 2,
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(LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
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lcd_update();
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/* wait until USB is plugged */
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while(usb_detect() != USB_INSERTED) ;
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}
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static const char msg[] = "Bootloader USB mode";
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reset_screen();
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lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * sizeof(msg))) / 2,
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(LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
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lcd_update();
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while(usb_detect() == USB_INSERTED)
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sleep(HZ);
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reset_screen();
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lcd_update();
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}
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#endif /* HAVE_BOOTLOADER_USB_MODE */
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void main(void) NORETURN_ATTR;
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void main(void)
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{
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unsigned char* loadbuffer;
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int buffer_size;
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void(*kernel_entry)(void);
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int ret;
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system_init();
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kernel_init();
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enable_irq();
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lcd_init();
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show_logo();
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backlight_init();
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button_init_device();
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int btn = button_read_device();
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#if !defined(SANSA_FUZE) && !defined(SANSA_CLIP) && !defined(SANSA_CLIPV2) \
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&& !defined(SANSA_CLIPPLUS) && !defined(SANSA_CLIPZIP)
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if (button_hold())
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{
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verbose = true;
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lcd_clear_display();
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printf("Hold switch on");
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printf("Shutting down...");
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sleep(HZ);
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power_off();
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}
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#endif
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/* Enable bootloader messages if any button is pressed */
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if (btn)
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{
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lcd_clear_display();
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verbose = true;
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}
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ret = storage_init();
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if(ret < 0)
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error(EATA, ret, true);
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filesystem_init();
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#ifdef HAVE_BOOTLOADER_USB_MODE
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usb_init();
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/* Enter USB mode if USB is plugged and SELECT button is pressed */
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if(btn & BUTTON_SELECT) {
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usb_start_monitoring();
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if(usb_detect() == USB_INSERTED)
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usb_mode();
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}
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#endif /* HAVE_BOOTLOADER_USB_MODE */
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while((ret = disk_mount_all()) <= 0)
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{
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#ifdef HAVE_BOOTLOADER_USB_MODE
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error(EDISK, ret, false);
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usb_start_monitoring();
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usb_mode();
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#else
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error(EDISK, ret, true);
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#endif
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}
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printf("Loading firmware");
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loadbuffer = (unsigned char*)DRAM_ORIG; /* DRAM */
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buffer_size = (int)(loadbuffer + (DRAM_SIZE) - TTB_SIZE);
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while((ret = load_firmware(loadbuffer, BOOTFILE, buffer_size)) <= EFILE_EMPTY)
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{
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#ifdef HAVE_BOOTLOADER_USB_MODE
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error(EBOOTFILE, ret, false);
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usb_start_monitoring();
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usb_mode();
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#else
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error(EBOOTFILE, ret, true);
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#endif
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}
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#if defined(SANSA_FUZEV2) || defined(SANSA_CLIPPLUS) || defined(SANSA_CLIPZIP)
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/* It is necessary for proper detection AMSv2 variant 1.
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* We should restore initial state of GPIOB_PIN(5) as it used for
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* variant detection, but can be changed if we switch SD card. */
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if (amsv2_variant == 1)
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GPIOB_PIN(5) = 1 << 5;
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#endif
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kernel_entry = (void*) loadbuffer;
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commit_discard_idcache();
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printf("Executing");
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kernel_entry();
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printf("ERR: Failed to boot");
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/* never returns */
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while(1) ;
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}
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