1 /* 2 * Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #ifndef __NORFLASH_H_ 8 #define __NORFLASH_H_ 9 10 #include <stdint.h> 11 12 /* First bus cycle */ 13 #define NOR_CMD_READ_ARRAY 0xFF 14 #define NOR_CMD_READ_ID_CODE 0x90 15 #define NOR_CMD_READ_QUERY 0x98 16 #define NOR_CMD_READ_STATUS_REG 0x70 17 #define NOR_CMD_CLEAR_STATUS_REG 0x50 18 #define NOR_CMD_WRITE_TO_BUFFER 0xE8 19 #define NOR_CMD_WORD_PROGRAM 0x40 20 #define NOR_CMD_BLOCK_ERASE 0x20 21 #define NOR_CMD_LOCK_UNLOCK 0x60 22 #define NOR_CMD_BLOCK_ERASE_ACK 0xD0 23 24 /* Second bus cycle */ 25 #define NOR_LOCK_BLOCK 0x01 26 #define NOR_UNLOCK_BLOCK 0xD0 27 28 /* Status register bits */ 29 #define NOR_DWS (1 << 7) 30 #define NOR_ESS (1 << 6) 31 #define NOR_ES (1 << 5) 32 #define NOR_PS (1 << 4) 33 #define NOR_VPPS (1 << 3) 34 #define NOR_PSS (1 << 2) 35 #define NOR_BLS (1 << 1) 36 #define NOR_BWS (1 << 0) 37 38 /* Public API */ 39 void nor_send_cmd(uintptr_t base_addr, unsigned long cmd); 40 int nor_word_program(uintptr_t base_addr, unsigned long data); 41 int nor_lock(uintptr_t base_addr); 42 int nor_unlock(uintptr_t base_addr); 43 int nor_erase(uintptr_t base_addr); 44 45 #endif /* __NORFLASH_H_ */ 46 47