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 * See file CREDITS for list of people who contributed to this
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of
13 * the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 #ifndef __ASM_ARCH_ELM_H
26 #define __ASM_ARCH_ELM_H
28 * ELM Module Registers
31 /* ELM registers bit fields */
32 #define ELM_SYSCONFIG_SOFTRESET_MASK (0x2)
33 #define ELM_SYSCONFIG_SOFTRESET (0x2)
34 #define ELM_SYSSTATUS_RESETDONE_MASK (0x1)
35 #define ELM_SYSSTATUS_RESETDONE (0x1)
36 #define ELM_LOCATION_CONFIG_ECC_BCH_LEVEL_MASK (0x3)
37 #define ELM_LOCATION_CONFIG_ECC_SIZE_MASK (0x7FF0000)
38 #define ELM_LOCATION_CONFIG_ECC_SIZE_POS (16)
39 #define ELM_SYNDROME_FRAGMENT_6_SYNDROME_VALID (0x00010000)
40 #define ELM_LOCATION_STATUS_ECC_CORRECTABLE_MASK (0x100)
41 #define ELM_LOCATION_STATUS_ECC_NB_ERRORS_MASK (0x1F)
52 /* BCH syndrome registers */
54 u32 syndrome_fragment_x[7]; /* 0x400, 0x404.... 0x418 */
55 u8 res1[36]; /* 0x41c */
58 /* BCH error status & location register */
60 u32 location_status; /* 0x800 */
61 u8 res1[124]; /* 0x804 */
62 u32 error_location_x[16]; /* 0x880.... */
63 u8 res2[64]; /* 0x8c0 */
66 /* BCH ELM register map - do not try to allocate memmory for this structure.
67 * We have used plenty of reserved variables to fill the slots in the ELM
68 * register memory map.
69 * Directly initialize the struct pointer to ELM base address.
73 u8 res1[12]; /* 0x004 */
74 u32 sysconfig; /* 0x010 */
75 u32 sysstatus; /* 0x014 */
76 u32 irqstatus; /* 0x018 */
77 u32 irqenable; /* 0x01c */
78 u32 location_config; /* 0x020 */
79 u8 res2[92]; /* 0x024 */
80 u32 page_ctrl; /* 0x080 */
81 u8 res3[892]; /* 0x084 */
82 struct syndrome syndrome_fragments[8]; /* 0x400 */
83 u8 res4[512]; /* 0x600 */
84 struct location error_location[8]; /* 0x800 */
87 int elm_check_error(u8 *syndrome, u32 nibbles, u32 *error_count,
88 u32 *error_locations);
89 int elm_config(enum bch_level level);
92 #endif /* __ASSEMBLY__ */
93 #endif /* __ASM_ARCH_ELM_H */