fd7b794e81
This change allows readonly FATFS to be mounted without wear levelling support. This will provide the customers a simple way to mount FATFS images generated on host and flashed onto the chip during factory provisioning. Since NVS encryption is not supported yet and NVS entry size is limited, the change will provide an easy alternative for securing the provisioning data by just marking FATFS parition as encrypted.
118 lines
3.6 KiB
C
118 lines
3.6 KiB
C
// Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD
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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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#include <string.h>
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#include "diskio.h"
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#include "ffconf.h"
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#include "ff.h"
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#include "esp_log.h"
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#include "diskio_wl.h"
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#include "wear_levelling.h"
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static const char* TAG = "ff_diskio_spiflash";
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wl_handle_t ff_wl_handles[FF_VOLUMES] = {
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WL_INVALID_HANDLE,
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WL_INVALID_HANDLE,
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};
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DSTATUS ff_wl_initialize (BYTE pdrv)
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{
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return 0;
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}
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DSTATUS ff_wl_status (BYTE pdrv)
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{
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return 0;
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}
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DRESULT ff_wl_read (BYTE pdrv, BYTE *buff, DWORD sector, UINT count)
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{
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ESP_LOGV(TAG, "ff_wl_read - pdrv=%i, sector=%i, count=%i\n", (unsigned int)pdrv, (unsigned int)sector, (unsigned int)count);
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wl_handle_t wl_handle = ff_wl_handles[pdrv];
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assert(wl_handle + 1);
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esp_err_t err = wl_read(wl_handle, sector * wl_sector_size(wl_handle), buff, count * wl_sector_size(wl_handle));
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if (err != ESP_OK) {
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ESP_LOGE(TAG, "wl_read failed (%d)", err);
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return RES_ERROR;
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}
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return RES_OK;
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}
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DRESULT ff_wl_write (BYTE pdrv, const BYTE *buff, DWORD sector, UINT count)
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{
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ESP_LOGV(TAG, "ff_wl_write - pdrv=%i, sector=%i, count=%i\n", (unsigned int)pdrv, (unsigned int)sector, (unsigned int)count);
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wl_handle_t wl_handle = ff_wl_handles[pdrv];
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assert(wl_handle + 1);
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esp_err_t err = wl_erase_range(wl_handle, sector * wl_sector_size(wl_handle), count * wl_sector_size(wl_handle));
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if (err != ESP_OK) {
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ESP_LOGE(TAG, "wl_erase_range failed (%d)", err);
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return RES_ERROR;
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}
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err = wl_write(wl_handle, sector * wl_sector_size(wl_handle), buff, count * wl_sector_size(wl_handle));
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if (err != ESP_OK) {
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ESP_LOGE(TAG, "wl_write failed (%d)", err);
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return RES_ERROR;
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}
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return RES_OK;
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}
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DRESULT ff_wl_ioctl (BYTE pdrv, BYTE cmd, void *buff)
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{
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wl_handle_t wl_handle = ff_wl_handles[pdrv];
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ESP_LOGV(TAG, "ff_wl_ioctl: cmd=%i\n", cmd);
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assert(wl_handle + 1);
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switch (cmd) {
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case CTRL_SYNC:
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return RES_OK;
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case GET_SECTOR_COUNT:
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*((DWORD *) buff) = wl_size(wl_handle) / wl_sector_size(wl_handle);
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return RES_OK;
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case GET_SECTOR_SIZE:
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*((WORD *) buff) = wl_sector_size(wl_handle);
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return RES_OK;
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case GET_BLOCK_SIZE:
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return RES_ERROR;
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}
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return RES_ERROR;
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}
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esp_err_t ff_diskio_register_wl_partition(BYTE pdrv, wl_handle_t flash_handle)
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{
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if (pdrv >= FF_VOLUMES) {
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return ESP_ERR_INVALID_ARG;
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}
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static const ff_diskio_impl_t wl_impl = {
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.init = &ff_wl_initialize,
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.status = &ff_wl_status,
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.read = &ff_wl_read,
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.write = &ff_wl_write,
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.ioctl = &ff_wl_ioctl
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};
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ff_wl_handles[pdrv] = flash_handle;
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ff_diskio_register(pdrv, &wl_impl);
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return ESP_OK;
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}
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BYTE ff_diskio_get_pdrv_wl(wl_handle_t flash_handle)
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{
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for (int i = 0; i < FF_VOLUMES; i++) {
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if (flash_handle == ff_wl_handles[i]) {
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return i;
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}
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}
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return 0xff;
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}
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