mirror of https://github.com/ARMmbed/mbed-os.git
131 lines
3.5 KiB
C
131 lines
3.5 KiB
C
/* mbed Microcontroller Library
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* (C)Copyright TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION 2018 All rights reserved
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "flash_api.h"
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#include "mbed_critical.h"
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#include "tmpm4g9_fc.h"
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#define PROGRAM_WIRTE_MAX (16U) // Page program could be written 16 bytes/4 words once
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#define SECTOR_SIZE (0x8000) // 32KB each sectors or block
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#define FLASH_CHIP_SIZE (0x00180000) // Flash chip size is 1536KByte
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#define MASK_CHIP_ID_FROM_ADD (0x00FFFFFFUL)
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#define SUCCESS (0U)
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#define FAIL (-1)
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// IHOSC1EN
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#define CGOSCCR_IHOSC1EN_MASK ((uint32_t)0x00000001) // IHOSC1EN :Mask
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#define CGOSCCR_IHOSC1EN_RW_DISABLE ((uint32_t)0x00000000) // IHOSC1EN :[R/W] :Disable
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#define CGOSCCR_IHOSC1EN_RW_ENABLE ((uint32_t)0x00000001) // IHOSC1EN :[R/W] :Enable
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static void internal_hosc_enable(void);
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int32_t flash_init(flash_t *obj)
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{
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obj->flash_inited = 0;
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obj->flash_inited = 1;
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internal_hosc_enable(); // Internal HOSC enable
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return 0;
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}
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int32_t flash_free(flash_t *obj)
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{
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obj->flash_inited = 0;
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return 0;
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}
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int32_t flash_erase_sector(flash_t *obj, uint32_t address)
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{
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int status = FAIL;
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if (obj->flash_inited == 0) {
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flash_init(obj);
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}
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// We need to prevent flash accesses during erase operation
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core_util_critical_section_enter();
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if (TXZ_SUCCESS == fc_erase_block_code_flash((uint32_t*)FC_CODE_FLASH_ADDRESS_TOP, (uint32_t*)address)) {
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status = SUCCESS;
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} else {
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// Do nothing
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}
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core_util_critical_section_exit();
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return status;
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}
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int32_t flash_program_page(flash_t *obj, uint32_t address, const uint8_t *data, uint32_t size)
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{
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int status = SUCCESS;
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address &= MASK_CHIP_ID_FROM_ADD;
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// We need to prevent flash accesses during program operation
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core_util_critical_section_enter();
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if (TXZ_SUCCESS == fc_write_code_flash((uint32_t*)data, (uint32_t*)address, size)) {
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// Do nothing
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} else {
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status = FAIL;
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}
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core_util_critical_section_exit();
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return status;
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}
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uint32_t flash_get_sector_size(const flash_t *obj, uint32_t address)
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{
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if ((address >= FC_CODE_FLASH_ADDRESS_TOP) && (address < (FC_CODE_FLASH_ADDRESS_TOP + FLASH_CHIP_SIZE))) {
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return SECTOR_SIZE;
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} else {
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// Do nothing
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}
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return MBED_FLASH_INVALID_SIZE;
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}
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uint32_t flash_get_page_size(const flash_t *obj)
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{
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return PROGRAM_WIRTE_MAX;
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}
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uint32_t flash_get_start_address(const flash_t *obj)
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{
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return FC_CODE_FLASH_ADDRESS_TOP;
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}
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uint32_t flash_get_size(const flash_t *obj)
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{
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return FLASH_CHIP_SIZE;
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}
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static void internal_hosc_enable(void)
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{
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uint32_t work;
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work = (uint32_t)(TSB_CG->OSCCR & ~CGOSCCR_IHOSC1EN_MASK);
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TSB_CG->OSCCR = (uint32_t)(work | CGOSCCR_IHOSC1EN_RW_ENABLE);
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}
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uint8_t flash_get_erase_value(const flash_t *obj)
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{
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(void)obj;
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return 0xFF;
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}
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