Merge tag 'dm-pull-29oct19' of git://git.denx.de/u-boot-dm
[oweals/u-boot.git] / drivers / mtd / spi / sf_internal.h
1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  * SPI flash internal definitions
4  *
5  * Copyright (C) 2008 Atmel Corporation
6  * Copyright (C) 2013 Jagannadha Sutradharudu Teki, Xilinx Inc.
7  */
8
9 #ifndef _SF_INTERNAL_H_
10 #define _SF_INTERNAL_H_
11
12 #include <linux/types.h>
13 #include <linux/compiler.h>
14
15 #define SPI_NOR_MAX_ID_LEN      6
16 #define SPI_NOR_MAX_ADDR_WIDTH  4
17
18 struct flash_info {
19 #if !CONFIG_IS_ENABLED(SPI_FLASH_TINY)
20         char            *name;
21 #endif
22
23         /*
24          * This array stores the ID bytes.
25          * The first three bytes are the JEDIC ID.
26          * JEDEC ID zero means "no ID" (mostly older chips).
27          */
28         u8              id[SPI_NOR_MAX_ID_LEN];
29         u8              id_len;
30
31         /* The size listed here is what works with SPINOR_OP_SE, which isn't
32          * necessarily called a "sector" by the vendor.
33          */
34         unsigned int    sector_size;
35         u16             n_sectors;
36
37         u16             page_size;
38         u16             addr_width;
39
40         u16             flags;
41 #define SECT_4K                 BIT(0)  /* SPINOR_OP_BE_4K works uniformly */
42 #define SPI_NOR_NO_ERASE        BIT(1)  /* No erase command needed */
43 #define SST_WRITE               BIT(2)  /* use SST byte programming */
44 #define SPI_NOR_NO_FR           BIT(3)  /* Can't do fastread */
45 #define SECT_4K_PMC             BIT(4)  /* SPINOR_OP_BE_4K_PMC works uniformly */
46 #define SPI_NOR_DUAL_READ       BIT(5)  /* Flash supports Dual Read */
47 #define SPI_NOR_QUAD_READ       BIT(6)  /* Flash supports Quad Read */
48 #define USE_FSR                 BIT(7)  /* use flag status register */
49 #define SPI_NOR_HAS_LOCK        BIT(8)  /* Flash supports lock/unlock via SR */
50 #define SPI_NOR_HAS_TB          BIT(9)  /*
51                                          * Flash SR has Top/Bottom (TB) protect
52                                          * bit. Must be used with
53                                          * SPI_NOR_HAS_LOCK.
54                                          */
55 #define SPI_S3AN                BIT(10) /*
56                                          * Xilinx Spartan 3AN In-System Flash
57                                          * (MFR cannot be used for probing
58                                          * because it has the same value as
59                                          * ATMEL flashes)
60                                          */
61 #define SPI_NOR_4B_OPCODES      BIT(11) /*
62                                          * Use dedicated 4byte address op codes
63                                          * to support memory size above 128Mib.
64                                          */
65 #define NO_CHIP_ERASE           BIT(12) /* Chip does not support chip erase */
66 #define SPI_NOR_SKIP_SFDP       BIT(13) /* Skip parsing of SFDP tables */
67 #define USE_CLSR                BIT(14) /* use CLSR command */
68 #define SPI_NOR_HAS_SST26LOCK   BIT(15) /* Flash supports lock/unlock via BPR */
69 };
70
71 extern const struct flash_info spi_nor_ids[];
72
73 #define JEDEC_MFR(info) ((info)->id[0])
74 #define JEDEC_ID(info)          (((info)->id[1]) << 8 | ((info)->id[2]))
75
76 /* Get software write-protect value (BP bits) */
77 int spi_flash_cmd_get_sw_write_prot(struct spi_flash *flash);
78
79
80 #if CONFIG_IS_ENABLED(SPI_FLASH_MTD)
81 int spi_flash_mtd_register(struct spi_flash *flash);
82 void spi_flash_mtd_unregister(void);
83 #endif
84 #endif /* _SF_INTERNAL_H_ */