init.c

/* Copyright 2023 Dual Tachyon
 * https://github.com/DualTachyon
 * Copyright 2023 Manuel Jedinger
 * https://github.com/manujedi
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *     Unless required by applicable law or agreed to in writing, software
 *     distributed under the License is distributed on an "AS IS" BASIS,
 *     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *     See the License for the specific language governing permissions and
 *     limitations under the License.
 */

#include <stdint.h>

extern uint32_t __bss_start__[];
extern uint32_t __bss_end__[];
extern uint8_t flash_data_start[];
extern uint8_t sram_data_start[];
extern uint8_t sram_data_end[];

void BSS_Init(void);

void DATA_Init(void);

void BSS_Init(void) {
    uint32_t *pBss;
    for (pBss = __bss_start__; pBss < __bss_end__; pBss++)
        *pBss = 0;
}

void DATA_Init(void) {
    volatile uint32_t *pDataRam = (volatile uint32_t *) sram_data_start;
    volatile uint32_t *pDataFlash = (volatile uint32_t *) flash_data_start;
    uint32_t Size = (uint32_t) sram_data_end - (uint32_t) sram_data_start;
    unsigned int i;

    for (i = 0; i < (Size / 4); i++)
        *pDataRam++ = *pDataFlash++;
}