mccibootloaderplatform_entry.c

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/*
 
Module: mccibootloaderplatform_entry.c
 
Function:
        McciBootloaderPlatform_entry()
 
Copyright and License:
        This file copyright (C) 2021 by
 
                MCCI Corporation
                3520 Krums Corners Road
                Ithaca, NY  14850
 
        See accompanying LICENSE file for copyright and license information.
 
Author:
        Terry Moore, MCCI Corporation   March 2021
 
*/
 
#include "mcci_bootloader.h"
 
#include "mcci_bootloader_platform.h"
#include <string.h>
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/****************************************************************************\
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|       Manifest constants & typedefs.
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\****************************************************************************/
 
 
 
/****************************************************************************\
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|       Read-only data.
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\****************************************************************************/
 
 
 
/****************************************************************************\
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|       Variables.
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\****************************************************************************/
 
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/*
 
Name:   McciBootloaderPlatform_entry()
 
Function:
        Perform platform-specific initialization.
 
Definition:
        void McciBootloaderPlatform_entry(
                void
                );
 
Description:
        This routine initializes zero RAM, copies init data to RAM, and sets
        up the hardware. Key hardware setup: clocks, potentially the debug UART,
        and brown-out detect.
 
Returns:
        No explicit result.
 
Notes:
 
 
*/
 
#define FUNCTION "McciBootloaderPlatform_entry()"
 
void
McciBootloaderPlatform_entry(
        void
        )
        {
        const size_t nData = McciBootloader_codeSize(&g_McciBootloader_DataBase[0], &g_McciBootloader_DataTop[0]);
        const size_t nBss = McciBootloader_codeSize(&g_McciBootloader_BssBase[0], &g_McciBootloader_BssTop[0]);
 
        /* copy the initialized data */
        memcpy(&g_McciBootloader_DataBase[0], &gk_McciBootloader_DataImageBase[0], nData);
 
        /* zero BSS */
        memset(&g_McciBootloader_BssBase[0], 0, nBss);
 
        /* call the platform init function */
        McciBootloaderPlatform_systemInit();
        }
 
#undef FUNCTION
 
/**** end of mccibootloaderplatform_entry.c ****/