1 /* 2 * Copyright (C) 2017 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY MATTHIAS RINGWALD AND CONTRIBUTORS 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 20 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 21 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 24 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 27 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 */ 31 32 /* 33 * hal_flash_bank_mxc.c 34 * 35 * HAL abstraction for Flash memory that can be written anywhere 36 * after being erased implemented with memory 37 */ 38 39 #include <stdint.h> 40 #include <string.h> // memcpy 41 42 #include "hal_flash_bank_mxc.h" 43 44 #include "flc.h" // Maxim Flash Controller 45 46 static uint32_t hal_flash_bank_mxc_get_size(void * context){ 47 hal_flash_bank_mxc_t * self = (hal_flash_bank_mxc_t *) context; 48 return self->sector_size; 49 } 50 51 static uint32_t hal_flash_bank_mxc_get_alignment(void * context){ 52 (void)(context); 53 return 4; 54 } 55 56 static void hal_flash_bank_mxc_erase(void * context, int bank){ 57 hal_flash_bank_mxc_t * self = (hal_flash_bank_mxc_t *) context; 58 59 if (bank > 1) return; 60 61 // Erase page 62 FLC_PageErase(self->banks[bank], MXC_V_FLC_ERASE_CODE_PAGE_ERASE, MXC_V_FLC_FLSH_UNLOCK_KEY); 63 } 64 65 static void hal_flash_bank_mxc_read(void * context, int bank, uint32_t offset, uint8_t * buffer, uint32_t size){ 66 hal_flash_bank_mxc_t * self = (hal_flash_bank_mxc_t *) context; 67 68 if (bank > 1) return; 69 if (offset > self->sector_size) return; 70 if ((offset + size) > self->sector_size) return; 71 72 memcpy(buffer, ((uint8_t *) self->banks[bank]) + offset, size); 73 } 74 75 static void hal_flash_bank_mxc_write(void * context, int bank, uint32_t offset, const uint8_t * data, uint32_t size){ 76 hal_flash_bank_mxc_t * self = (hal_flash_bank_mxc_t *) context; 77 78 if (bank > 1) return; 79 if (offset > self->sector_size) return; 80 if ((offset + size) > self->sector_size) return; 81 82 FLC_Write(self->banks[bank] + offset, data, size, MXC_V_FLC_FLSH_UNLOCK_KEY); 83 } 84 85 static const hal_flash_bank_t hal_flash_bank_mxc_impl = { 86 /* uint32_t (*get_size)() */ &hal_flash_bank_mxc_get_size, 87 /* uint32_t (*get_alignment)(..); */ &hal_flash_bank_mxc_get_alignment, 88 /* void (*erase)(..); */ &hal_flash_bank_mxc_erase, 89 /* void (*read)(..); */ &hal_flash_bank_mxc_read, 90 /* void (*write)(..); */ &hal_flash_bank_mxc_write, 91 }; 92 93 const hal_flash_bank_t * hal_flash_bank_mxc_init_instance(hal_flash_bank_mxc_t * context, uint32_t sector_size, 94 uintptr_t bank_0_addr, uintptr_t bank_1_addr){ 95 context->sector_size = sector_size; 96 context->banks[0] = bank_0_addr; 97 context->banks[1] = bank_1_addr; 98 99 // prepare FLC 100 FLC_Init(); 101 102 return &hal_flash_bank_mxc_impl; 103 } 104 105