81 lines
2.4 KiB
C
81 lines
2.4 KiB
C
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/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2019 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "py/mphal.h"
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#include "lib/oofatfs/ff.h"
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#include "lib/oofatfs/diskio.h"
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#include "mboot.h"
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#if MBOOT_FSLOAD
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#if _MAX_SS == _MIN_SS
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#define SECSIZE (_MIN_SS)
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#else
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#error Unsupported
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#endif
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DRESULT disk_read(void *pdrv, BYTE *buf, DWORD sector, UINT count) {
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fsload_bdev_t *bdev = pdrv;
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if (0 <= sector && sector < bdev->byte_len / 512) {
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do_read(bdev->base_addr + sector * SECSIZE, count * SECSIZE, buf);
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return RES_OK;
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}
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return RES_PARERR;
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}
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DRESULT disk_ioctl(void *pdrv, BYTE cmd, void *buf) {
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fsload_bdev_t *bdev = pdrv;
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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*)buf) = bdev->byte_len / SECSIZE;
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return RES_OK;
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case GET_SECTOR_SIZE:
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*((WORD*)buf) = SECSIZE;
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return RES_OK;
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case GET_BLOCK_SIZE:
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*((DWORD*)buf) = 1; // erase block size in units of sector size
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return RES_OK;
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case IOCTL_INIT:
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case IOCTL_STATUS:
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*((DSTATUS*)buf) = STA_PROTECT;
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return RES_OK;
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default:
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return RES_PARERR;
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}
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}
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#endif // MBOOT_FSLOAD
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