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105 lines
3.8 KiB
C
105 lines
3.8 KiB
C
/*
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* Copyright (C) 2017 BlueKitchen GmbH
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holders nor the names of
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY MATTHIAS RINGWALD AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
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* RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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/*
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* hal_flash_bank_mxc.c
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*
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* HAL abstraction for Flash memory that can be written anywhere
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* after being erased implemented with memory
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*/
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#include <stdint.h>
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#include <string.h> // memcpy
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#include "hal_flash_bank_mxc.h"
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#include "flc.h" // Maxim Flash Controller
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static uint32_t hal_flash_bank_mxc_get_size(void * context){
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hal_flash_bank_mxc_t * self = (hal_flash_bank_mxc_t *) context;
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return self->sector_size;
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}
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static uint32_t hal_flash_bank_mxc_get_alignment(void * context){
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(void)(context);
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return 4;
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}
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static void hal_flash_bank_mxc_erase(void * context, int bank){
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hal_flash_bank_mxc_t * self = (hal_flash_bank_mxc_t *) context;
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if (bank > 1) return;
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// Erase page
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FLC_PageErase(self->banks[bank], MXC_V_FLC_ERASE_CODE_PAGE_ERASE, MXC_V_FLC_FLSH_UNLOCK_KEY);
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}
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static void hal_flash_bank_mxc_read(void * context, int bank, uint32_t offset, uint8_t * buffer, uint32_t size){
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hal_flash_bank_mxc_t * self = (hal_flash_bank_mxc_t *) context;
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if (bank > 1) return;
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if (offset > self->sector_size) return;
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if ((offset + size) > self->sector_size) return;
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memcpy(buffer, ((uint8_t *) self->banks[bank]) + offset, size);
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}
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static void hal_flash_bank_mxc_write(void * context, int bank, uint32_t offset, const uint8_t * data, uint32_t size){
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hal_flash_bank_mxc_t * self = (hal_flash_bank_mxc_t *) context;
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if (bank > 1) return;
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if (offset > self->sector_size) return;
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if ((offset + size) > self->sector_size) return;
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FLC_Write(self->banks[bank] + offset, data, size, MXC_V_FLC_FLSH_UNLOCK_KEY);
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}
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static const hal_flash_bank_t hal_flash_bank_mxc_impl = {
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/* uint32_t (*get_size)() */ &hal_flash_bank_mxc_get_size,
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/* uint32_t (*get_alignment)(..); */ &hal_flash_bank_mxc_get_alignment,
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/* void (*erase)(..); */ &hal_flash_bank_mxc_erase,
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/* void (*read)(..); */ &hal_flash_bank_mxc_read,
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/* void (*write)(..); */ &hal_flash_bank_mxc_write,
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};
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const hal_flash_bank_t * hal_flash_bank_mxc_init_instance(hal_flash_bank_mxc_t * context, uint32_t sector_size,
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uintptr_t bank_0_addr, uintptr_t bank_1_addr){
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context->sector_size = sector_size;
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context->banks[0] = bank_0_addr;
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context->banks[1] = bank_1_addr;
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// prepare FLC
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FLC_Init();
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return &hal_flash_bank_mxc_impl;
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}
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