2 * SPI flash internal definitions
4 * Copyright (C) 2008 Atmel Corporation
5 * Copyright (C) 2013 Jagannadha Sutradharudu Teki, Xilinx Inc.
7 * SPDX-License-Identifier: GPL-2.0+
10 #ifndef _SF_INTERNAL_H_
11 #define _SF_INTERNAL_H_
13 #include <linux/types.h>
14 #include <linux/compiler.h>
16 /* Dual SPI flash memories - see SPI_COMM_DUAL_... */
19 SF_DUAL_STACKED_FLASH = BIT(0),
20 SF_DUAL_PARALLEL_FLASH = BIT(1),
23 enum spi_nor_option_flags {
24 SNOR_F_SST_WR = BIT(0),
25 SNOR_F_USE_FSR = BIT(1),
26 SNOR_F_USE_UPAGE = BIT(3),
29 #define SPI_FLASH_3B_ADDR_LEN 3
30 #define SPI_FLASH_CMD_LEN (1 + SPI_FLASH_3B_ADDR_LEN)
31 #define SPI_FLASH_16MB_BOUN 0x1000000
33 /* CFI Manufacture ID's */
34 #define SPI_FLASH_CFI_MFR_SPANSION 0x01
35 #define SPI_FLASH_CFI_MFR_STMICRO 0x20
36 #define SPI_FLASH_CFI_MFR_MACRONIX 0xc2
37 #define SPI_FLASH_CFI_MFR_SST 0xbf
38 #define SPI_FLASH_CFI_MFR_WINBOND 0xef
39 #define SPI_FLASH_CFI_MFR_ATMEL 0x1f
42 #define CMD_ERASE_4K 0x20
43 #define CMD_ERASE_CHIP 0xc7
44 #define CMD_ERASE_64K 0xd8
47 #define CMD_WRITE_STATUS 0x01
48 #define CMD_PAGE_PROGRAM 0x02
49 #define CMD_WRITE_DISABLE 0x04
50 #define CMD_WRITE_ENABLE 0x06
51 #define CMD_QUAD_PAGE_PROGRAM 0x32
54 #define CMD_READ_ARRAY_SLOW 0x03
55 #define CMD_READ_ARRAY_FAST 0x0b
56 #define CMD_READ_DUAL_OUTPUT_FAST 0x3b
57 #define CMD_READ_DUAL_IO_FAST 0xbb
58 #define CMD_READ_QUAD_OUTPUT_FAST 0x6b
59 #define CMD_READ_QUAD_IO_FAST 0xeb
60 #define CMD_READ_ID 0x9f
61 #define CMD_READ_STATUS 0x05
62 #define CMD_READ_STATUS1 0x35
63 #define CMD_READ_CONFIG 0x35
64 #define CMD_FLAG_STATUS 0x70
66 /* Bank addr access commands */
67 #ifdef CONFIG_SPI_FLASH_BAR
68 # define CMD_BANKADDR_BRWR 0x17
69 # define CMD_BANKADDR_BRRD 0x16
70 # define CMD_EXTNADDR_WREAR 0xC5
71 # define CMD_EXTNADDR_RDEAR 0xC8
75 #define STATUS_WIP BIT(0)
76 #define STATUS_QEB_WINSPAN BIT(1)
77 #define STATUS_QEB_MXIC BIT(6)
78 #define STATUS_PEC BIT(7)
79 #define SR_BP0 BIT(2) /* Block protect 0 */
80 #define SR_BP1 BIT(3) /* Block protect 1 */
81 #define SR_BP2 BIT(4) /* Block protect 2 */
83 /* Flash timeout values */
84 #define SPI_FLASH_PROG_TIMEOUT (2 * CONFIG_SYS_HZ)
85 #define SPI_FLASH_PAGE_ERASE_TIMEOUT (5 * CONFIG_SYS_HZ)
86 #define SPI_FLASH_SECTOR_ERASE_TIMEOUT (10 * CONFIG_SYS_HZ)
89 #ifdef CONFIG_SPI_FLASH_SST
90 #define SST26_CMD_READ_BPR 0x72
91 #define SST26_CMD_WRITE_BPR 0x42
93 #define SST26_BPR_8K_NUM 4
94 #define SST26_MAX_BPR_REG_LEN (18 + 1)
95 #define SST26_BOUND_REG_SIZE ((32 + SST26_BPR_8K_NUM * 8) * SZ_1K)
103 # define CMD_SST_BP 0x02 /* Byte Program */
104 # define CMD_SST_AAI_WP 0xAD /* Auto Address Incr Word Program */
106 int sst_write_wp(struct spi_flash *flash, u32 offset, size_t len,
108 int sst_write_bp(struct spi_flash *flash, u32 offset, size_t len,
112 #define JEDEC_MFR(info) ((info)->id[0])
113 #define JEDEC_ID(info) (((info)->id[1]) << 8 | ((info)->id[2]))
114 #define JEDEC_EXT(info) (((info)->id[3]) << 8 | ((info)->id[4]))
115 #define SPI_FLASH_MAX_ID_LEN 6
117 struct spi_flash_info {
118 /* Device name ([MANUFLETTER][DEVTYPE][DENSITY][EXTRAINFO]) */
122 * This array stores the ID bytes.
123 * The first three bytes are the JEDIC ID.
124 * JEDEC ID zero means "no ID" (mostly older chips).
126 u8 id[SPI_FLASH_MAX_ID_LEN];
130 * The size listed here is what works with SPINOR_OP_SE, which isn't
131 * necessarily called a "sector" by the vendor.
139 #define SECT_4K BIT(0) /* CMD_ERASE_4K works uniformly */
140 #define E_FSR BIT(1) /* use flag status register for */
141 #define SST_WR BIT(2) /* use SST byte/word programming */
142 #define WR_QPP BIT(3) /* use Quad Page Program */
143 #define RD_QUAD BIT(4) /* use Quad Read */
144 #define RD_DUAL BIT(5) /* use Dual Read */
145 #define RD_QUADIO BIT(6) /* use Quad IO Read */
146 #define RD_DUALIO BIT(7) /* use Dual IO Read */
147 #define RD_FULL (RD_QUAD | RD_DUAL | RD_QUADIO | RD_DUALIO)
150 extern const struct spi_flash_info spi_flash_ids[];
152 /* Send a single-byte command to the device and read the response */
153 int spi_flash_cmd(struct spi_slave *spi, u8 cmd, void *response, size_t len);
156 * Send a multi-byte command to the device and read the response. Used
157 * for flash array reads, etc.
159 int spi_flash_cmd_read(struct spi_slave *spi, const u8 *cmd,
160 size_t cmd_len, void *data, size_t data_len);
163 * Send a multi-byte command to the device followed by (optional)
164 * data. Used for programming the flash array, etc.
166 int spi_flash_cmd_write(struct spi_slave *spi, const u8 *cmd, size_t cmd_len,
167 const void *data, size_t data_len);
170 /* Flash erase(sectors) operation, support all possible erase commands */
171 int spi_flash_cmd_erase_ops(struct spi_flash *flash, u32 offset, size_t len);
173 /* Lock stmicro spi flash region */
174 int stm_lock(struct spi_flash *flash, u32 ofs, size_t len);
176 /* Unlock stmicro spi flash region */
177 int stm_unlock(struct spi_flash *flash, u32 ofs, size_t len);
179 /* Check if a stmicro spi flash region is completely locked */
180 int stm_is_locked(struct spi_flash *flash, u32 ofs, size_t len);
182 /* Enable writing on the SPI flash */
183 static inline int spi_flash_cmd_write_enable(struct spi_flash *flash)
185 return spi_flash_cmd(flash->spi, CMD_WRITE_ENABLE, NULL, 0);
188 /* Disable writing on the SPI flash */
189 static inline int spi_flash_cmd_write_disable(struct spi_flash *flash)
191 return spi_flash_cmd(flash->spi, CMD_WRITE_DISABLE, NULL, 0);
195 * Used for spi_flash write operation
197 * - spi_flash_cmd_write_enable
198 * - spi_flash_cmd_write
199 * - spi_flash_wait_till_ready
202 int spi_flash_write_common(struct spi_flash *flash, const u8 *cmd,
203 size_t cmd_len, const void *buf, size_t buf_len);
206 * Flash write operation, support all possible write commands.
207 * Write the requested data out breaking it up into multiple write
208 * commands as needed per the write size.
210 int spi_flash_cmd_write_ops(struct spi_flash *flash, u32 offset,
211 size_t len, const void *buf);
214 * Same as spi_flash_cmd_read() except it also claims/releases the SPI
215 * bus. Used as common part of the ->read() operation.
217 int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd,
218 size_t cmd_len, void *data, size_t data_len);
220 /* Flash read operation, support all possible read commands */
221 int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset,
222 size_t len, void *data);
224 #ifdef CONFIG_SPI_FLASH_MTD
225 int spi_flash_mtd_register(struct spi_flash *flash);
226 void spi_flash_mtd_unregister(void);
230 * spi_flash_scan - scan the SPI FLASH
231 * @flash: the spi flash structure
233 * The drivers can use this fuction to scan the SPI FLASH.
234 * In the scanning, it will try to get all the necessary information to
235 * fill the spi_flash{}.
237 * Return: 0 for success, others for failure.
239 int spi_flash_scan(struct spi_flash *flash);
241 #endif /* _SF_INTERNAL_H_ */