drivers/mtd/spi/sf_internal.h

   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 #define SPI_FLASH_3B_ADDR_LEN           3
  14 #define SPI_FLASH_CMD_LEN               (1 + SPI_FLASH_3B_ADDR_LEN)
  15 #define SPI_FLASH_16MB_BOUN             0x1000000
  16
  17 /* CFI Manufacture ID's */
  18 #define SPI_FLASH_CFI_MFR_SPANSION      0x01
  19 #define SPI_FLASH_CFI_MFR_STMICRO       0x20
  20 #define SPI_FLASH_CFI_MFR_MACRONIX      0xc2
  21 #define SPI_FLASH_CFI_MFR_WINBOND       0xef
  22
  23 /* Erase commands */
  24 #define CMD_ERASE_4K                    0x20
  25 #define CMD_ERASE_32K                   0x52
  26 #define CMD_ERASE_CHIP                  0xc7
  27 #define CMD_ERASE_64K                   0xd8
  28
  29 /* Write commands */
  30 #define CMD_WRITE_STATUS                0x01
  31 #define CMD_PAGE_PROGRAM                0x02
  32 #define CMD_WRITE_DISABLE               0x04
  33 #define CMD_READ_STATUS                 0x05
  34 #define CMD_QUAD_PAGE_PROGRAM           0x32
  35 #define CMD_READ_STATUS1                0x35
  36 #define CMD_WRITE_ENABLE                0x06
  37 #define CMD_READ_CONFIG                 0x35
  38 #define CMD_FLAG_STATUS                 0x70
  39
  40 /* Read commands */
  41 #define CMD_READ_ARRAY_SLOW             0x03
  42 #define CMD_READ_ARRAY_FAST             0x0b
  43 #define CMD_READ_DUAL_OUTPUT_FAST       0x3b
  44 #define CMD_READ_DUAL_IO_FAST           0xbb
  45 #define CMD_READ_QUAD_OUTPUT_FAST       0x6b
  46 #define CMD_READ_QUAD_IO_FAST           0xeb
  47 #define CMD_READ_ID                     0x9f
  48
  49 /* Bank addr access commands */
  50 #ifdef CONFIG_SPI_FLASH_BAR
  51 # define CMD_BANKADDR_BRWR              0x17
  52 # define CMD_BANKADDR_BRRD              0x16
  53 # define CMD_EXTNADDR_WREAR             0xC5
  54 # define CMD_EXTNADDR_RDEAR             0xC8
  55 #endif
  56
  57 /* Common status */
  58 #define STATUS_WIP                      (1 << 0)
  59 #define STATUS_QEB_WINSPAN              (1 << 1)
  60 #define STATUS_QEB_MXIC                 (1 << 6)
  61 #define STATUS_PEC                      (1 << 7)
  62
  63 #ifdef CONFIG_SYS_SPI_ST_ENABLE_WP_PIN
  64 #define STATUS_SRWD                     (1 << 7) /* SR write protect */
  65 #endif
  66
  67 /* Flash timeout values */
  68 #define SPI_FLASH_PROG_TIMEOUT          (2 * CONFIG_SYS_HZ)
  69 #define SPI_FLASH_PAGE_ERASE_TIMEOUT    (5 * CONFIG_SYS_HZ)
  70 #define SPI_FLASH_SECTOR_ERASE_TIMEOUT  (10 * CONFIG_SYS_HZ)
  71
  72 /* SST specific */
  73 #ifdef CONFIG_SPI_FLASH_SST
  74 # define SST_WP                 0x01    /* Supports AAI word program */
  75 # define CMD_SST_BP             0x02    /* Byte Program */
  76 # define CMD_SST_AAI_WP         0xAD    /* Auto Address Incr Word Program */
  77
  78 int sst_write_wp(struct spi_flash *flash, u32 offset, size_t len,
  79                 const void *buf);
  80 #endif
  81
  82 /* Send a single-byte command to the device and read the response */
  83 int spi_flash_cmd(struct spi_slave *spi, u8 cmd, void *response, size_t len);
  84
  85 /*
  86  * Send a multi-byte command to the device and read the response. Used
  87  * for flash array reads, etc.
  88  */
  89 int spi_flash_cmd_read(struct spi_slave *spi, const u8 *cmd,
  90                 size_t cmd_len, void *data, size_t data_len);
  91
  92 /*
  93  * Send a multi-byte command to the device followed by (optional)
  94  * data. Used for programming the flash array, etc.
  95  */
  96 int spi_flash_cmd_write(struct spi_slave *spi, const u8 *cmd, size_t cmd_len,
  97                 const void *data, size_t data_len);
  98
  99
 100 /* Flash erase(sectors) operation, support all possible erase commands */
 101 int spi_flash_cmd_erase_ops(struct spi_flash *flash, u32 offset, size_t len);
 102
 103 /* Read the status register */
 104 int spi_flash_cmd_read_status(struct spi_flash *flash, u8 *rs);
 105
 106 /* Program the status register */
 107 int spi_flash_cmd_write_status(struct spi_flash *flash, u8 ws);
 108
 109 /* Read the config register */
 110 int spi_flash_cmd_read_config(struct spi_flash *flash, u8 *rc);
 111
 112 /* Program the config register */
 113 int spi_flash_cmd_write_config(struct spi_flash *flash, u8 wc);
 114
 115 /* Enable writing on the SPI flash */
 116 static inline int spi_flash_cmd_write_enable(struct spi_flash *flash)
 117 {
 118         return spi_flash_cmd(flash->spi, CMD_WRITE_ENABLE, NULL, 0);
 119 }
 120
 121 /* Disable writing on the SPI flash */
 122 static inline int spi_flash_cmd_write_disable(struct spi_flash *flash)
 123 {
 124         return spi_flash_cmd(flash->spi, CMD_WRITE_DISABLE, NULL, 0);
 125 }
 126
 127 /*
 128  * Send the read status command to the device and wait for the wip
 129  * (write-in-progress) bit to clear itself.
 130  */
 131 int spi_flash_cmd_wait_ready(struct spi_flash *flash, unsigned long timeout);
 132
 133 /*
 134  * Used for spi_flash write operation
 135  * - SPI claim
 136  * - spi_flash_cmd_write_enable
 137  * - spi_flash_cmd_write
 138  * - spi_flash_cmd_wait_ready
 139  * - SPI release
 140  */
 141 int spi_flash_write_common(struct spi_flash *flash, const u8 *cmd,
 142                 size_t cmd_len, const void *buf, size_t buf_len);
 143
 144 /*
 145  * Flash write operation, support all possible write commands.
 146  * Write the requested data out breaking it up into multiple write
 147  * commands as needed per the write size.
 148  */
 149 int spi_flash_cmd_write_ops(struct spi_flash *flash, u32 offset,
 150                 size_t len, const void *buf);
 151
 152 /*
 153  * Same as spi_flash_cmd_read() except it also claims/releases the SPI
 154  * bus. Used as common part of the ->read() operation.
 155  */
 156 int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd,
 157                 size_t cmd_len, void *data, size_t data_len);
 158
 159 /* Flash read operation, support all possible read commands */
 160 int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset,
 161                 size_t len, void *data);
 162
 163 #endif /* _SF_INTERNAL_H_ */