1 #ifndef __LINUX_MTD_SPI_NOR_H
2 #define __LINUX_MTD_SPI_NOR_H
5 #define OPCODE_WREN 0x06 /* Write enable */
6 #define OPCODE_RDSR 0x05 /* Read status register */
7 #define OPCODE_WRSR 0x01 /* Write status register 1 byte */
8 #define OPCODE_NORM_READ 0x03 /* Read data bytes (low frequency) */
9 #define OPCODE_FAST_READ 0x0b /* Read data bytes (high frequency) */
10 #define OPCODE_DUAL_READ 0x3b /* Read data bytes (Dual SPI) */
11 #define OPCODE_QUAD_READ 0x6b /* Read data bytes (Quad SPI) */
12 #define OPCODE_PP 0x02 /* Page program (up to 256 bytes) */
13 #define OPCODE_BE_4K 0x20 /* Erase 4KiB block */
14 #define OPCODE_BE_4K_PMC 0xd7 /* Erase 4KiB block on PMC chips */
15 #define OPCODE_BE_32K 0x52 /* Erase 32KiB block */
16 #define OPCODE_CHIP_ERASE 0xc7 /* Erase whole flash chip */
17 #define OPCODE_SE 0xd8 /* Sector erase (usually 64KiB) */
18 #define OPCODE_RDID 0x9f /* Read JEDEC ID */
19 #define OPCODE_RDCR 0x35 /* Read configuration register */
21 /* 4-byte address opcodes - used on Spansion and some Macronix flashes. */
22 #define OPCODE_NORM_READ_4B 0x13 /* Read data bytes (low frequency) */
23 #define OPCODE_FAST_READ_4B 0x0c /* Read data bytes (high frequency) */
24 #define OPCODE_DUAL_READ_4B 0x3c /* Read data bytes (Dual SPI) */
25 #define OPCODE_QUAD_READ_4B 0x6c /* Read data bytes (Quad SPI) */
26 #define OPCODE_PP_4B 0x12 /* Page program (up to 256 bytes) */
27 #define OPCODE_SE_4B 0xdc /* Sector erase (usually 64KiB) */
29 /* Used for SST flashes only. */
30 #define OPCODE_BP 0x02 /* Byte program */
31 #define OPCODE_WRDI 0x04 /* Write disable */
32 #define OPCODE_AAI_WP 0xad /* Auto address increment word program */
34 /* Used for Macronix and Winbond flashes. */
35 #define OPCODE_EN4B 0xb7 /* Enter 4-byte mode */
36 #define OPCODE_EX4B 0xe9 /* Exit 4-byte mode */
38 /* Used for Spansion flashes only. */
39 #define OPCODE_BRWR 0x17 /* Bank register write */
41 /* Status Register bits. */
42 #define SR_WIP 1 /* Write in progress */
43 #define SR_WEL 2 /* Write enable latch */
44 /* meaning of other SR_* bits may differ between vendors */
45 #define SR_BP0 4 /* Block protect 0 */
46 #define SR_BP1 8 /* Block protect 1 */
47 #define SR_BP2 0x10 /* Block protect 2 */
48 #define SR_SRWD 0x80 /* SR write protect */
50 #define SR_QUAD_EN_MX 0x40 /* Macronix Quad I/O */
52 /* Configuration Register bits. */
53 #define CR_QUAD_EN_SPAN 0x2 /* Spansion Quad I/O */