iboot_main.c

См. документацию.

/*
 *  CMSIS2000
 *  CMSIS-like sources for LPC2xxx series MCUs
 *
 *  (C) Copyright 2011-2012, Dmitriy Cherepanov, All Rights Reserved
 *
 *  Version: 0.0.7
 *  Date of the Last Update:  2013-03-04
 *  
 *  Permission is hereby granted, free of charge, to any person obtaining a copy
 *  of this software and associated documentation files (the "Software"), to
 *  deal in the Software without restriction, including without limitation the
 *  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 *  sell copies of the Software, and to permit persons to whom the Software is
 *  furnished to do so, subject to the following conditions:
 *
 *  The above copyright notice and this permission notice shall be included in
 *  all copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 *  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 *  IN THE SOFTWARE.
 *
 *  Do not be lasy! For the latest version see http://irtos.sourceforge.net .
 *
 *  
#*/
/*----------------------------------------------------------------------------*/
/**
\file uboot file load applic
\author Cherepanov Dmitiy
*/
/*----------------------------------------------------------------------------*/
extern const unsigned char _etext  ;// the end of const data in image - start of image
extern const unsigned char __data_end  ;
extern const unsigned char __data_start  ;
extern const unsigned char __isr_vector  ;// the start of image

#include "../uboot/uboot_file.h"
#define END_OF_SEARCH_REGION (32 * 1024)
/*----------------------------------------------------------------------------*/
extern unsigned int load_file_from_external_source_to(flash_addr_t free_space_start);
/*----------------------------------------------------------------------------*/
static void uboot_file_run(flash_addr_t start_addr);//NON_RETURN
/*----------------------------------------------------------------------------*/
int main ()
{
flash_addr_t uboot_file_addr;
const flash_addr_t end_of_iboot_applic   = (flash_addr_t ) ( &__isr_vector + (unsigned int)&_etext + (&__data_end - &__data_start));

uboot_file_addr = end_of_iboot_applic;
do {
        uboot_file_addr = find_uboot_file(uboot_file_addr, END_OF_SEARCH_REGION);
        if (uboot_file_addr != ((flash_addr_t)(-1))) {
                flash_addr_t uboot_applic_addr;
                uboot_applic_addr = uboot_file_get_load_addr(uboot_file_addr);
                if (mcu_addr_is_in_SDRAM(uboot_applic_addr )) {
                                EMC_Init();
                                if (SDRAM_Test() != 0) {
                                        while(1==1); // oops SDRAM NOT WORKING
                                }
                }
                uboot_applic_addr = uboot_file_load (uboot_file_addr);
                if (uboot_applic_addr != -1) {
                        uboot_file_run(uboot_applic_addr );
                }
        }
#ifdef HAS_FILE_SOURCE
        do {
                uboot_file_addr = load_file_from_external_source_to(uboot_file_addr);
        } while (uboot_file_addr == 0);
        /* now uboot_applic_addr points to flash */
#endif
} while(1==1); // oops NO UBOOT FILE
}

static void uboot_file_run(flash_addr_t start_addr)
{
void (*startApplication) (void)  = (void (* ) (void)) start_addr;
        startApplication();
}