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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 V2M_FLASH_H
8 #define V2M_FLASH_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 /* V2M_FLASH_H*/
46