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137 lines
3.4 KiB
C
137 lines
3.4 KiB
C
/*
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Copyright 2020, The Regents of the University of California.
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All rights reserved.
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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 are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE REGENTS OF THE UNIVERSITY OF CALIFORNIA ''AS
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IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE REGENTS OF THE UNIVERSITY OF CALIFORNIA OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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OF SUCH DAMAGE.
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The views and conclusions contained in the software and documentation are those
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of the authors and should not be interpreted as representing official policies,
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either expressed or implied, of The Regents of the University of California.
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*/
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#include "flash.h"
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#include <stdlib.h>
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extern const struct flash_driver spi_flash_driver;
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extern const struct flash_driver bpi_flash_driver;
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struct flash_device *flash_open_spi(int data_width, volatile uint8_t *ctrl_reg)
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{
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struct flash_device *fdev;
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if (!ctrl_reg)
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return NULL;
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fdev = calloc(1, sizeof(struct flash_device));
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if (!fdev)
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return NULL;
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fdev->driver = &spi_flash_driver;
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fdev->data_width = data_width;
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fdev->ctrl_reg = ctrl_reg;
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if (fdev->driver->init(fdev))
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{
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goto err;
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}
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return fdev;
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err:
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flash_release(fdev);
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return NULL;
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}
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struct flash_device *flash_open_bpi(int data_width, volatile uint8_t *ctrl_reg, volatile uint8_t *addr_reg, volatile uint8_t *data_reg)
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{
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struct flash_device *fdev;
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if (!ctrl_reg || !addr_reg || !data_reg)
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return NULL;
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fdev = calloc(1, sizeof(struct flash_device));
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if (!fdev)
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return NULL;
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fdev->driver = &bpi_flash_driver;
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fdev->data_width = data_width;
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fdev->ctrl_reg = ctrl_reg;
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fdev->addr_reg = addr_reg;
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fdev->data_reg = data_reg;
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if (fdev->driver->init(fdev))
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{
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goto err;
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}
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return fdev;
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err:
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flash_release(fdev);
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return NULL;
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}
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void flash_release(struct flash_device *fdev)
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{
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if (!fdev)
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return;
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fdev->driver->release(fdev);
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free(fdev);
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}
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int flash_read(struct flash_device *fdev, size_t addr, size_t len, void* dest)
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{
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if (!fdev)
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return -1;
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return fdev->driver->read(fdev, addr, len, dest);
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}
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int flash_write(struct flash_device *fdev, size_t addr, size_t len, void* src)
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{
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if (!fdev)
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return -1;
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return fdev->driver->write(fdev, addr, len, src);
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}
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int flash_erase(struct flash_device *fdev, size_t addr, size_t len)
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{
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if (!fdev)
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return -1;
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return fdev->driver->erase(fdev, addr, len);
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}
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