| Juan Castillo | facdd1c | 2015-08-12 12:53:02 +0100 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved. |
| 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions are met: |
| 6 | * |
| 7 | * Redistributions of source code must retain the above copyright notice, this |
| 8 | * list of conditions and the following disclaimer. |
| 9 | * |
| 10 | * Redistributions in binary form must reproduce the above copyright notice, |
| 11 | * this list of conditions and the following disclaimer in the documentation |
| 12 | * and/or other materials provided with the distribution. |
| 13 | * |
| 14 | * Neither the name of ARM nor the names of its contributors may be used |
| 15 | * to endorse or promote products derived from this software without specific |
| 16 | * prior written permission. |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| 22 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 23 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 24 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 25 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 26 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 27 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 28 | * POSSIBILITY OF SUCH DAMAGE. |
| 29 | */ |
| 30 | |
| 31 | #ifndef __NORFLASH_H_ |
| 32 | #define __NORFLASH_H_ |
| 33 | |
| 34 | #include <stdint.h> |
| 35 | |
| 36 | /* First bus cycle */ |
| 37 | #define NOR_CMD_READ_ARRAY 0xFF |
| 38 | #define NOR_CMD_READ_ID_CODE 0x90 |
| 39 | #define NOR_CMD_READ_QUERY 0x98 |
| 40 | #define NOR_CMD_READ_STATUS_REG 0x70 |
| 41 | #define NOR_CMD_CLEAR_STATUS_REG 0x50 |
| 42 | #define NOR_CMD_WRITE_TO_BUFFER 0xE8 |
| 43 | #define NOR_CMD_WORD_PROGRAM 0x40 |
| 44 | #define NOR_CMD_BLOCK_ERASE 0x20 |
| 45 | #define NOR_CMD_LOCK_UNLOCK 0x60 |
| 46 | |
| 47 | /* Second bus cycle */ |
| 48 | #define NOR_LOCK_BLOCK 0x01 |
| 49 | #define NOR_UNLOCK_BLOCK 0xD0 |
| 50 | |
| 51 | /* Status register bits */ |
| 52 | #define NOR_DWS (1 << 7) |
| 53 | #define NOR_ESS (1 << 6) |
| 54 | #define NOR_ES (1 << 5) |
| 55 | #define NOR_PS (1 << 4) |
| 56 | #define NOR_VPPS (1 << 3) |
| 57 | #define NOR_PSS (1 << 2) |
| 58 | #define NOR_BLS (1 << 1) |
| 59 | #define NOR_BWS (1 << 0) |
| 60 | |
| 61 | /* Public API */ |
| 62 | void nor_send_cmd(uintptr_t base_addr, unsigned long cmd); |
| 63 | int nor_word_program(uintptr_t base_addr, unsigned long data); |
| 64 | void nor_lock(uintptr_t base_addr); |
| 65 | void nor_unlock(uintptr_t base_addr); |
| 66 | |
| 67 | #endif /* __NORFLASH_H_ */ |
| 68 | |