xref: /openbmc/u-boot/include/linux/mtd/omap_gpmc.h (revision e8f80a5a)
1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  * (C) Copyright 2004-2008 Texas Instruments, <www.ti.com>
4  * Rohit Choraria <rohitkc@ti.com>
5  *
6  * (C) Copyright 2013 Andreas Bießmann <andreas@biessmann.org>
7  */
8 #ifndef __ASM_OMAP_GPMC_H
9 #define __ASM_OMAP_GPMC_H
10 
11 #define GPMC_BUF_EMPTY	0
12 #define GPMC_BUF_FULL	1
13 #define GPMC_MAX_SECTORS	8
14 
15 enum omap_ecc {
16 	/* 1-bit  ECC calculation by Software, Error detection by Software */
17 	OMAP_ECC_HAM1_CODE_SW = 1, /* avoid un-initialized int can be 0x0 */
18 	/* 1-bit  ECC calculation by GPMC, Error detection by Software */
19 	/* ECC layout compatible to legacy ROMCODE. */
20 	OMAP_ECC_HAM1_CODE_HW,
21 	/* 4-bit  ECC calculation by GPMC, Error detection by Software */
22 	OMAP_ECC_BCH4_CODE_HW_DETECTION_SW,
23 	/* 4-bit  ECC calculation by GPMC, Error detection by ELM */
24 	OMAP_ECC_BCH4_CODE_HW,
25 	/* 8-bit  ECC calculation by GPMC, Error detection by Software */
26 	OMAP_ECC_BCH8_CODE_HW_DETECTION_SW,
27 	/* 8-bit  ECC calculation by GPMC, Error detection by ELM */
28 	OMAP_ECC_BCH8_CODE_HW,
29 	/* 16-bit  ECC calculation by GPMC, Error detection by ELM */
30 	OMAP_ECC_BCH16_CODE_HW,
31 };
32 
33 struct gpmc_cs {
34 	u32 config1;		/* 0x00 */
35 	u32 config2;		/* 0x04 */
36 	u32 config3;		/* 0x08 */
37 	u32 config4;		/* 0x0C */
38 	u32 config5;		/* 0x10 */
39 	u32 config6;		/* 0x14 */
40 	u32 config7;		/* 0x18 */
41 	u32 nand_cmd;		/* 0x1C */
42 	u32 nand_adr;		/* 0x20 */
43 	u32 nand_dat;		/* 0x24 */
44 	u8 res[8];		/* blow up to 0x30 byte */
45 };
46 
47 struct bch_res_0_3 {
48 	u32 bch_result_x[4];
49 };
50 
51 struct bch_res_4_6 {
52 	u32 bch_result_x[3];
53 };
54 
55 struct gpmc {
56 	u8 res1[0x10];
57 	u32 sysconfig;		/* 0x10 */
58 	u8 res2[0x4];
59 	u32 irqstatus;		/* 0x18 */
60 	u32 irqenable;		/* 0x1C */
61 	u8 res3[0x20];
62 	u32 timeout_control;	/* 0x40 */
63 	u8 res4[0xC];
64 	u32 config;		/* 0x50 */
65 	u32 status;		/* 0x54 */
66 	u8 res5[0x8];		/* 0x58 */
67 	struct gpmc_cs cs[8];	/* 0x60, 0x90, .. */
68 	u32 prefetch_config1;	/* 0x1E0 */
69 	u32 prefetch_config2;	/* 0x1E4 */
70 	u32 res6;		/* 0x1E8 */
71 	u32 prefetch_control;	/* 0x1EC */
72 	u32 prefetch_status;	/* 0x1F0 */
73 	u32 ecc_config;		/* 0x1F4 */
74 	u32 ecc_control;	/* 0x1F8 */
75 	u32 ecc_size_config;	/* 0x1FC */
76 	u32 ecc1_result;	/* 0x200 */
77 	u32 ecc2_result;	/* 0x204 */
78 	u32 ecc3_result;	/* 0x208 */
79 	u32 ecc4_result;	/* 0x20C */
80 	u32 ecc5_result;	/* 0x210 */
81 	u32 ecc6_result;	/* 0x214 */
82 	u32 ecc7_result;	/* 0x218 */
83 	u32 ecc8_result;	/* 0x21C */
84 	u32 ecc9_result;	/* 0x220 */
85 	u8 res7[12];		/* 0x224 */
86 	u32 testmomde_ctrl;	/* 0x230 */
87 	u8 res8[12];		/* 0x234 */
88 	struct bch_res_0_3 bch_result_0_3[GPMC_MAX_SECTORS]; /* 0x240,0x250, */
89 	u8 res9[16 * 4];	/* 0x2C0 - 0x2FF */
90 	struct bch_res_4_6 bch_result_4_6[GPMC_MAX_SECTORS]; /* 0x300,0x310, */
91 };
92 
93 /* Used for board specific gpmc initialization */
94 extern const struct gpmc *gpmc_cfg;
95 extern char gpmc_cs0_flash;
96 
97 #endif /* __ASM_OMAP_GPMC_H */
98