| /* |
| * 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_ */ |
| |