forked from Imagelibrary/rtems
74 lines
2.9 KiB
C
74 lines
2.9 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/*
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* SPI driver for M25P40 like spi flash device.
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*/
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/*
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* Copyright (c) 2007 embedded brains GmbH & Co. KG
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*
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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
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* 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
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* 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)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <rtems.h>
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#include <rtems/libi2c.h>
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#include <libchip/spi-flash-m25p40.h>
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#include <rtems/libio.h>
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static spi_memdrv_t spi_flash_m25p40_rw_drv_t = {
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{/* public fields */
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.ops = &spi_memdrv_rw_ops, /* operations of general memdrv */
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.size = sizeof (spi_flash_m25p40_rw_drv_t),
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},
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{ /* our private fields */
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.baudrate = 2000000,
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.erase_before_program = true,
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.empty_state = 0xff,
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.page_size = 256, /* programming page size in bytes */
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.sector_size = 0x10000, /* 64K - erase sector size in bytes */
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.mem_size = 0x80000, /* 512K - total capacity in bytes */
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}
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};
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rtems_libi2c_drv_t *spi_flash_m25p40_rw_driver_descriptor =
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&spi_flash_m25p40_rw_drv_t.libi2c_drv_entry;
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static spi_memdrv_t spi_flash_m25p40_ro_drv_t = {
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{/* public fields */
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.ops = &spi_memdrv_ro_ops, /* operations of general memdrv */
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.size = sizeof (spi_flash_m25p40_ro_drv_t),
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},
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{ /* our private fields */
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.baudrate = 2000000,
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.erase_before_program = true,
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.empty_state = 0xff,
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.page_size = 256, /* programming page size in bytes */
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.sector_size = 0x10000, /* 64K erase sector size in bytes */
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.mem_size = 0x80000, /* 512K total capacity in bytes */
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}
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};
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rtems_libi2c_drv_t *spi_flash_m25p40_ro_driver_descriptor =
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&spi_flash_m25p40_ro_drv_t.libi2c_drv_entry;
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