1 /* SPDX-License-Identifier: GPL-2.0 */ 1
2 /* Primary function overlay window definitions
3 * and service functions used by LPDDR chips
4 */
5 #ifndef __LINUX_MTD_PFOW_H
6 #define __LINUX_MTD_PFOW_H
7
8 #include <linux/mtd/qinfo.h>
9
10 /* PFOW registers addressing */
11 /* Address of symbol "P" */
12 #define PFOW_QUERY_STRING_P
13 /* Address of symbol "F" */
14 #define PFOW_QUERY_STRING_F
15 /* Address of symbol "O" */
16 #define PFOW_QUERY_STRING_O
17 /* Address of symbol "W" */
18 #define PFOW_QUERY_STRING_W
19 /* Identification info for LPDDR chip */
20 #define PFOW_MANUFACTURER_ID
21 #define PFOW_DEVICE_ID
22 /* Address in PFOW where prog buffer can be fo
23 #define PFOW_PROGRAM_BUFFER_OFFSET
24 /* Size of program buffer in words */
25 #define PFOW_PROGRAM_BUFFER_SIZE
26 /* Address command code register */
27 #define PFOW_COMMAND_CODE
28 /* command data register */
29 #define PFOW_COMMAND_DATA
30 /* command address register lower address bits
31 #define PFOW_COMMAND_ADDRESS_L
32 /* command address register upper address bits
33 #define PFOW_COMMAND_ADDRESS_H
34 /* number of bytes to be proggrammed lower add
35 #define PFOW_DATA_COUNT_L
36 /* number of bytes to be proggrammed higher ad
37 #define PFOW_DATA_COUNT_H
38 /* command execution register, the only possib
39 #define PFOW_COMMAND_EXECUTE
40 /* 0x01 should be written at this address to c
41 #define PFOW_CLEAR_PROGRAM_BUFFER
42 /* device program/erase suspend register */
43 #define PFOW_PROGRAM_ERASE_SUSPEND
44 /* device status register */
45 #define PFOW_DSR
46
47 /* LPDDR memory device command codes */
48 /* They are possible values of PFOW command co
49 #define LPDDR_WORD_PROGRAM 0x0041
50 #define LPDDR_BUFF_PROGRAM 0x00E9
51 #define LPDDR_BLOCK_ERASE 0x0020
52 #define LPDDR_LOCK_BLOCK 0x0061
53 #define LPDDR_UNLOCK_BLOCK 0x0062
54 #define LPDDR_READ_BLOCK_LOCK_STATUS 0x0065
55 #define LPDDR_INFO_QUERY 0x0098
56 #define LPDDR_READ_OTP 0x0097
57 #define LPDDR_PROG_OTP 0x00C0
58 #define LPDDR_RESUME 0x00D0
59
60 /* Defines possible value of PFOW command exec
61 #define LPDDR_START_EXECUTION
62
63 /* Defines possible value of PFOW program/eras
64 #define LPDDR_SUSPEND
65
66 /* Possible values of PFOW device status regis
67 /* access R - read; RC read & clearable */
68 #define DSR_DPS (1<<1) /* RC;
69 * 0 -
70 #define DSR_PSS (1<<2) /* R; p
71 * 0-pr
72 * 1- p
73 #define DSR_VPPS (1<<3) /* RC;
74 #define DSR_PROGRAM_STATUS (1<<4) /* RC;
75 #define DSR_ERASE_STATUS (1<<5) /* RC;
76 * 0-su
77 * 1 bl
78 #define DSR_ESS (1<<6) /* R; e
79 * 0-er
80 * 1 er
81 #define DSR_READY_STATUS (1<<7) /* R; D
82 * 0-bu
83 * 1-re
84 #define DSR_RPS (0x3<<8) /* RC
85 * 00 -
86 * 01-r
87 * obje
88 * 10-o
89 * regi
90 * 11-a
91 * with
92 #define DSR_AOS (1<<12) /* RC;
93 #define DSR_AVAILABLE (1<<15) /* R;
94 * 1 -
95 * 0 -
96
97 /* The superset of all possible error bits in
98 #define DSR_ERR 0x133A
99
100 static inline void send_pfow_command(struct ma
101 unsigned long
102 unsigned long
103 {
104 int bits_per_chip = map_bankwidth(map)
105
106 map_write(map, CMD(cmd_code), map->pfo
107 map_write(map, CMD(adr & ((1<<bits_per
108 map->pfow_base
109 map_write(map, CMD(adr>>bits_per_chip)
110 map->pfow_base
111 if (len) {
112 map_write(map, CMD(len & ((1<<
113 map->p
114 map_write(map, CMD(len>>bits_p
115 map->p
116 }
117 if (datum)
118 map_write(map, *datum, map->pf
119
120 /* Command execution start */
121 map_write(map, CMD(LPDDR_START_EXECUTI
122 map->pfow_base + PFOW_
123 }
124 #endif /* __LINUX_MTD_PFOW_H */
125
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.