1 /* 2 * SPI flash internal definitions 3 * 4 * Copyright (C) 2008 Atmel Corporation 5 * Copyright (C) 2013 Jagannadha Sutradharudu Teki, Xilinx Inc. 6 * 7 * SPDX-License-Identifier: GPL-2.0+ 8 */ 9 10 #ifndef _SF_INTERNAL_H_ 11 #define _SF_INTERNAL_H_ 12 13 #include <linux/types.h> 14 #include <linux/compiler.h> 15 16 /* Dual SPI flash memories - see SPI_COMM_DUAL_... */ 17 enum spi_dual_flash { 18 SF_SINGLE_FLASH = 0, 19 SF_DUAL_STACKED_FLASH = BIT(0), 20 SF_DUAL_PARALLEL_FLASH = BIT(1), 21 }; 22 23 enum spi_nor_option_flags { 24 SNOR_F_SST_WR = BIT(0), 25 SNOR_F_USE_FSR = BIT(1), 26 }; 27 28 #define SPI_FLASH_3B_ADDR_LEN 3 29 #define SPI_FLASH_CMD_LEN (1 + SPI_FLASH_3B_ADDR_LEN) 30 #define SPI_FLASH_16MB_BOUN 0x1000000 31 32 /* CFI Manufacture ID's */ 33 #define SPI_FLASH_CFI_MFR_SPANSION 0x01 34 #define SPI_FLASH_CFI_MFR_STMICRO 0x20 35 #define SPI_FLASH_CFI_MFR_MACRONIX 0xc2 36 #define SPI_FLASH_CFI_MFR_SST 0xbf 37 #define SPI_FLASH_CFI_MFR_WINBOND 0xef 38 #define SPI_FLASH_CFI_MFR_ATMEL 0x1f 39 40 /* Erase commands */ 41 #define CMD_ERASE_4K 0x20 42 #define CMD_ERASE_CHIP 0xc7 43 #define CMD_ERASE_64K 0xd8 44 45 /* Write commands */ 46 #define CMD_WRITE_STATUS 0x01 47 #define CMD_PAGE_PROGRAM 0x02 48 #define CMD_WRITE_DISABLE 0x04 49 #define CMD_WRITE_ENABLE 0x06 50 #define CMD_QUAD_PAGE_PROGRAM 0x32 51 #define CMD_WRITE_EVCR 0x61 52 53 /* Read commands */ 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 65 #define CMD_READ_EVCR 0x65 66 67 /* Bank addr access commands */ 68 #ifdef CONFIG_SPI_FLASH_BAR 69 # define CMD_BANKADDR_BRWR 0x17 70 # define CMD_BANKADDR_BRRD 0x16 71 # define CMD_EXTNADDR_WREAR 0xC5 72 # define CMD_EXTNADDR_RDEAR 0xC8 73 #endif 74 75 /* Common status */ 76 #define STATUS_WIP BIT(0) 77 #define STATUS_QEB_WINSPAN BIT(1) 78 #define STATUS_QEB_MXIC BIT(6) 79 #define STATUS_PEC BIT(7) 80 #define STATUS_QEB_MICRON BIT(7) 81 #define SR_BP0 BIT(2) /* Block protect 0 */ 82 #define SR_BP1 BIT(3) /* Block protect 1 */ 83 #define SR_BP2 BIT(4) /* Block protect 2 */ 84 85 /* Flash timeout values */ 86 #define SPI_FLASH_PROG_TIMEOUT (2 * CONFIG_SYS_HZ) 87 #define SPI_FLASH_PAGE_ERASE_TIMEOUT (5 * CONFIG_SYS_HZ) 88 #define SPI_FLASH_SECTOR_ERASE_TIMEOUT (10 * CONFIG_SYS_HZ) 89 90 /* SST specific */ 91 #ifdef CONFIG_SPI_FLASH_SST 92 # define CMD_SST_BP 0x02 /* Byte Program */ 93 # define CMD_SST_AAI_WP 0xAD /* Auto Address Incr Word Program */ 94 95 int sst_write_wp(struct spi_flash *flash, u32 offset, size_t len, 96 const void *buf); 97 int sst_write_bp(struct spi_flash *flash, u32 offset, size_t len, 98 const void *buf); 99 #endif 100 101 #define JEDEC_MFR(info) ((info)->id[0]) 102 #define JEDEC_ID(info) (((info)->id[1]) << 8 | ((info)->id[2])) 103 #define JEDEC_EXT(info) (((info)->id[3]) << 8 | ((info)->id[4])) 104 #define SPI_FLASH_MAX_ID_LEN 6 105 106 struct spi_flash_info { 107 /* Device name ([MANUFLETTER][DEVTYPE][DENSITY][EXTRAINFO]) */ 108 const char *name; 109 110 /* 111 * This array stores the ID bytes. 112 * The first three bytes are the JEDIC ID. 113 * JEDEC ID zero means "no ID" (mostly older chips). 114 */ 115 u8 id[SPI_FLASH_MAX_ID_LEN]; 116 u8 id_len; 117 118 /* 119 * The size listed here is what works with SPINOR_OP_SE, which isn't 120 * necessarily called a "sector" by the vendor. 121 */ 122 u32 sector_size; 123 u32 n_sectors; 124 125 u16 page_size; 126 127 u16 flags; 128 #define SECT_4K BIT(0) /* CMD_ERASE_4K works uniformly */ 129 #define E_FSR BIT(1) /* use flag status register for */ 130 #define SST_WR BIT(2) /* use SST byte/word programming */ 131 #define WR_QPP BIT(3) /* use Quad Page Program */ 132 #define RD_QUAD BIT(4) /* use Quad Read */ 133 #define RD_DUAL BIT(5) /* use Dual Read */ 134 #define RD_QUADIO BIT(6) /* use Quad IO Read */ 135 #define RD_DUALIO BIT(7) /* use Dual IO Read */ 136 #define RD_FULL (RD_QUAD | RD_DUAL | RD_QUADIO | RD_DUALIO) 137 }; 138 139 extern const struct spi_flash_info spi_flash_ids[]; 140 141 /* Send a single-byte command to the device and read the response */ 142 int spi_flash_cmd(struct spi_slave *spi, u8 cmd, void *response, size_t len); 143 144 /* 145 * Send a multi-byte command to the device and read the response. Used 146 * for flash array reads, etc. 147 */ 148 int spi_flash_cmd_read(struct spi_slave *spi, const u8 *cmd, 149 size_t cmd_len, void *data, size_t data_len); 150 151 /* 152 * Send a multi-byte command to the device followed by (optional) 153 * data. Used for programming the flash array, etc. 154 */ 155 int spi_flash_cmd_write(struct spi_slave *spi, const u8 *cmd, size_t cmd_len, 156 const void *data, size_t data_len); 157 158 159 /* Flash erase(sectors) operation, support all possible erase commands */ 160 int spi_flash_cmd_erase_ops(struct spi_flash *flash, u32 offset, size_t len); 161 162 /* Lock stmicro spi flash region */ 163 int stm_lock(struct spi_flash *flash, u32 ofs, size_t len); 164 165 /* Unlock stmicro spi flash region */ 166 int stm_unlock(struct spi_flash *flash, u32 ofs, size_t len); 167 168 /* Check if a stmicro spi flash region is completely locked */ 169 int stm_is_locked(struct spi_flash *flash, u32 ofs, size_t len); 170 171 /* Enable writing on the SPI flash */ 172 static inline int spi_flash_cmd_write_enable(struct spi_flash *flash) 173 { 174 return spi_flash_cmd(flash->spi, CMD_WRITE_ENABLE, NULL, 0); 175 } 176 177 /* Disable writing on the SPI flash */ 178 static inline int spi_flash_cmd_write_disable(struct spi_flash *flash) 179 { 180 return spi_flash_cmd(flash->spi, CMD_WRITE_DISABLE, NULL, 0); 181 } 182 183 /* 184 * Used for spi_flash write operation 185 * - SPI claim 186 * - spi_flash_cmd_write_enable 187 * - spi_flash_cmd_write 188 * - spi_flash_cmd_wait_ready 189 * - SPI release 190 */ 191 int spi_flash_write_common(struct spi_flash *flash, const u8 *cmd, 192 size_t cmd_len, const void *buf, size_t buf_len); 193 194 /* 195 * Flash write operation, support all possible write commands. 196 * Write the requested data out breaking it up into multiple write 197 * commands as needed per the write size. 198 */ 199 int spi_flash_cmd_write_ops(struct spi_flash *flash, u32 offset, 200 size_t len, const void *buf); 201 202 /* 203 * Same as spi_flash_cmd_read() except it also claims/releases the SPI 204 * bus. Used as common part of the ->read() operation. 205 */ 206 int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd, 207 size_t cmd_len, void *data, size_t data_len); 208 209 /* Flash read operation, support all possible read commands */ 210 int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset, 211 size_t len, void *data); 212 213 #ifdef CONFIG_SPI_FLASH_MTD 214 int spi_flash_mtd_register(struct spi_flash *flash); 215 void spi_flash_mtd_unregister(void); 216 #endif 217 218 /** 219 * spi_flash_scan - scan the SPI FLASH 220 * @flash: the spi flash structure 221 * 222 * The drivers can use this fuction to scan the SPI FLASH. 223 * In the scanning, it will try to get all the necessary information to 224 * fill the spi_flash{}. 225 * 226 * Return: 0 for success, others for failure. 227 */ 228 int spi_flash_scan(struct spi_flash *flash); 229 230 #endif /* _SF_INTERNAL_H_ */ 231