69 lines
2.5 KiB
C
69 lines
2.5 KiB
C
/*
|
|
* Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
*
|
|
* 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.
|
|
*
|
|
* Neither the name of ARM nor the names of its contributors may be used
|
|
* to endorse or promote products derived from this software without specific
|
|
* prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
|
|
*/
|
|
|
|
#ifndef __NORFLASH_H_
|
|
#define __NORFLASH_H_
|
|
|
|
#include <stdint.h>
|
|
|
|
/* First bus cycle */
|
|
#define NOR_CMD_READ_ARRAY 0xFF
|
|
#define NOR_CMD_READ_ID_CODE 0x90
|
|
#define NOR_CMD_READ_QUERY 0x98
|
|
#define NOR_CMD_READ_STATUS_REG 0x70
|
|
#define NOR_CMD_CLEAR_STATUS_REG 0x50
|
|
#define NOR_CMD_WRITE_TO_BUFFER 0xE8
|
|
#define NOR_CMD_WORD_PROGRAM 0x40
|
|
#define NOR_CMD_BLOCK_ERASE 0x20
|
|
#define NOR_CMD_LOCK_UNLOCK 0x60
|
|
|
|
/* Second bus cycle */
|
|
#define NOR_LOCK_BLOCK 0x01
|
|
#define NOR_UNLOCK_BLOCK 0xD0
|
|
|
|
/* Status register bits */
|
|
#define NOR_DWS (1 << 7)
|
|
#define NOR_ESS (1 << 6)
|
|
#define NOR_ES (1 << 5)
|
|
#define NOR_PS (1 << 4)
|
|
#define NOR_VPPS (1 << 3)
|
|
#define NOR_PSS (1 << 2)
|
|
#define NOR_BLS (1 << 1)
|
|
#define NOR_BWS (1 << 0)
|
|
|
|
/* Public API */
|
|
void nor_send_cmd(uintptr_t base_addr, unsigned long cmd);
|
|
int nor_word_program(uintptr_t base_addr, unsigned long data);
|
|
void nor_lock(uintptr_t base_addr);
|
|
void nor_unlock(uintptr_t base_addr);
|
|
|
|
#endif /* __NORFLASH_H_ */
|
|
|