2 * (C) Copyright 2010-2011 Texas Instruments, <www.ti.com>
3 * Mansoor Ahamed <mansoor.ahamed@ti.com>
5 * Derived from work done by Rohit Choraria <rohitkc@ti.com> for omap3
7 * SPDX-License-Identifier: GPL-2.0+
9 #ifndef __ASM_ARCH_ELM_H
10 #define __ASM_ARCH_ELM_H
12 * ELM Module Registers
15 /* ELM registers bit fields */
16 #define ELM_SYSCONFIG_SOFTRESET_MASK (0x2)
17 #define ELM_SYSCONFIG_SOFTRESET (0x2)
18 #define ELM_SYSSTATUS_RESETDONE_MASK (0x1)
19 #define ELM_SYSSTATUS_RESETDONE (0x1)
20 #define ELM_LOCATION_CONFIG_ECC_BCH_LEVEL_MASK (0x3)
21 #define ELM_LOCATION_CONFIG_ECC_SIZE_MASK (0x7FF0000)
22 #define ELM_LOCATION_CONFIG_ECC_SIZE_POS (16)
23 #define ELM_SYNDROME_FRAGMENT_6_SYNDROME_VALID (0x00010000)
24 #define ELM_LOCATION_STATUS_ECC_CORRECTABLE_MASK (0x100)
25 #define ELM_LOCATION_STATUS_ECC_NB_ERRORS_MASK (0x1F)
27 #define ELM_MAX_CHANNELS 8
28 #define ELM_MAX_ERROR_COUNT 16
39 /* BCH syndrome registers */
41 u32 syndrome_fragment_x[7]; /* 0x400, 0x404.... 0x418 */
42 u8 res1[36]; /* 0x41c */
45 /* BCH error status & location register */
47 u32 location_status; /* 0x800 */
48 u8 res1[124]; /* 0x804 */
49 u32 error_location_x[ELM_MAX_ERROR_COUNT]; /* 0x880, 0x980, .. */
50 u8 res2[64]; /* 0x8c0 */
53 /* BCH ELM register map - do not try to allocate memmory for this structure.
54 * We have used plenty of reserved variables to fill the slots in the ELM
55 * register memory map.
56 * Directly initialize the struct pointer to ELM base address.
60 u8 res1[12]; /* 0x004 */
61 u32 sysconfig; /* 0x010 */
62 u32 sysstatus; /* 0x014 */
63 u32 irqstatus; /* 0x018 */
64 u32 irqenable; /* 0x01c */
65 u32 location_config; /* 0x020 */
66 u8 res2[92]; /* 0x024 */
67 u32 page_ctrl; /* 0x080 */
68 u8 res3[892]; /* 0x084 */
69 struct syndrome syndrome_fragments[ELM_MAX_CHANNELS]; /* 0x400,0x420 */
70 u8 res4[512]; /* 0x600 */
71 struct location error_location[ELM_MAX_CHANNELS]; /* 0x800,0x900 ... */
74 int elm_check_error(u8 *syndrome, enum bch_level bch_type, u32 *error_count,
75 u32 *error_locations);
76 int elm_config(enum bch_level level);
79 #endif /* __ASSEMBLY__ */
80 #endif /* __ASM_ARCH_ELM_H */