freebsd-dev/sys/dev/flash/mx25lreg.h
Emmanuel Vadot 2de9b4d347 zilinx/zy7_qspi: Add a qspi driver for Zynq platforms.
This is a qspi driver for the Xilinx Zynq-7000 chip.
It could be useful for anyone wanting to boot a system from flash memory
instead of SD cards.

Submitted by:	Thomas Skibo (thomasskibo@yahoo.com)
Differential Revision:	https://reviews.freebsd.org/D14698
2020-01-19 20:04:44 +00:00

74 lines
2.4 KiB
C

/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2009, Oleksandr Tymoshenko <gonzo@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef __MX25LREG_H__
#define __MX25LREG_H__
/*
* Commands
*/
#define CMD_WRITE_ENABLE 0x06
#define CMD_WRITE_DISABLE 0x04
#define CMD_READ_IDENT 0x9F
#define CMD_READ_STATUS 0x05
#define CMD_WRITE_STATUS 0x01
#define CMD_READ 0x03
#define CMD_FAST_READ 0x0B
#define CMD_READ_DUAL_IO 0xBB
#define CMD_READ_QUAD_OUTPUT 0x6B
#define CMD_PAGE_PROGRAM 0x02
#define CMD_SECTOR_ERASE 0xD8
#define CMD_BULK_ERASE 0xC7
#define CMD_BLOCK_4K_ERASE 0x20
#define CMD_BLOCK_32K_ERASE 0x52
#define CMD_ENTER_4B_MODE 0xB7
#define CMD_EXIT_4B_MODE 0xE9
/* Quad 4B-addressing operations. */
#define CMD_QUAD_SECTOR_ERASE 0xDC
#define CMD_QUAD_PAGE_PROGRAM 0x34
#define CMD_READ_4B_QUAD_OUTPUT 0x6C
/*
* Status register flags
*/
#define STATUS_SRWD (1 << 7)
#define STATUS_BP2 (1 << 4)
#define STATUS_BP1 (1 << 3)
#define STATUS_BP0 (1 << 2)
#define STATUS_WEL (1 << 1)
#define STATUS_WIP (1 << 0)
#define FLASH_PAGE_SIZE 256
#endif /* __MX25LREG_H__ */