forked from len0rd/rockbox
96 lines
2.6 KiB
C
96 lines
2.6 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) 2021 Aidan MacDonald
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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 "system.h"
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#include "kernel/kernel-internal.h"
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#include "i2c.h"
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#include "power.h"
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#include "lcd.h"
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#include "backlight.h"
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#include "button.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 "rb-loader.h"
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#include "loader_strerror.h"
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/* Load address where the binary needs to be placed */
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extern unsigned char loadaddress[];
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/* Fixed buffer to contain the loaded binary in memory */
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extern unsigned char loadbuffer[];
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extern unsigned char loadbufferend[];
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#define MAX_LOAD_SIZE (loadbufferend - loadbuffer)
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void exec(void* dst, const void* src, int bytes)
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__attribute__((noreturn, section(".icode")));
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void exec(void* dst, const void* src, int bytes)
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{
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memcpy(dst, src, bytes);
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commit_discard_idcache();
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__asm__ __volatile__ ("jr %0" :: "r"(dst));
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__builtin_unreachable();
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}
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static void error(const char* msg)
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{
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/* Initialization of the LCD/buttons only if needed */
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lcd_init();
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backlight_init();
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button_init();
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lcd_clear_display();
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lcd_puts(0, 0, msg);
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lcd_puts(0, 2, "Press POWER to power off");
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lcd_update();
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while(button_get(true) != BUTTON_POWER);
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power_off();
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}
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void main(void)
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{
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system_init();
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kernel_init();
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i2c_init();
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power_init();
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enable_irq();
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if(storage_init() < 0)
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error("Storage initialization failed");
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filesystem_init();
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if(!storage_present(0))
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error("No SD card present");
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if(disk_mount_all() <= 0)
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error("Unable to mount filesystem");
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int loadsize = load_firmware(loadbuffer, BOOTFILE, MAX_LOAD_SIZE);
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if(loadsize <= 0)
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error(loader_strerror(loadsize));
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disable_irq();
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exec(loadaddress, loadbuffer, loadsize);
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}
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