/* * (C) Copyright 2010-2011 Texas Instruments, * Mansoor Ahamed * * Derived from work done by Rohit Choraria for omap3 * * SPDX-License-Identifier: GPL-2.0+ */ #ifndef __ASM_ARCH_ELM_H #define __ASM_ARCH_ELM_H /* * ELM Module Registers */ /* ELM registers bit fields */ #define ELM_SYSCONFIG_SOFTRESET_MASK (0x2) #define ELM_SYSCONFIG_SOFTRESET (0x2) #define ELM_SYSSTATUS_RESETDONE_MASK (0x1) #define ELM_SYSSTATUS_RESETDONE (0x1) #define ELM_LOCATION_CONFIG_ECC_BCH_LEVEL_MASK (0x3) #define ELM_LOCATION_CONFIG_ECC_SIZE_MASK (0x7FF0000) #define ELM_LOCATION_CONFIG_ECC_SIZE_POS (16) #define ELM_SYNDROME_FRAGMENT_6_SYNDROME_VALID (0x00010000) #define ELM_LOCATION_STATUS_ECC_CORRECTABLE_MASK (0x100) #define ELM_LOCATION_STATUS_ECC_NB_ERRORS_MASK (0x1F) #ifndef __ASSEMBLY__ enum bch_level { BCH_4_BIT = 0, BCH_8_BIT, BCH_16_BIT }; /* BCH syndrome registers */ struct syndrome { u32 syndrome_fragment_x[7]; /* 0x400, 0x404.... 0x418 */ u8 res1[36]; /* 0x41c */ }; /* BCH error status & location register */ struct location { u32 location_status; /* 0x800 */ u8 res1[124]; /* 0x804 */ u32 error_location_x[16]; /* 0x880.... */ u8 res2[64]; /* 0x8c0 */ }; /* BCH ELM register map - do not try to allocate memmory for this structure. * We have used plenty of reserved variables to fill the slots in the ELM * register memory map. * Directly initialize the struct pointer to ELM base address. */ struct elm { u32 rev; /* 0x000 */ u8 res1[12]; /* 0x004 */ u32 sysconfig; /* 0x010 */ u32 sysstatus; /* 0x014 */ u32 irqstatus; /* 0x018 */ u32 irqenable; /* 0x01c */ u32 location_config; /* 0x020 */ u8 res2[92]; /* 0x024 */ u32 page_ctrl; /* 0x080 */ u8 res3[892]; /* 0x084 */ struct syndrome syndrome_fragments[8]; /* 0x400 */ u8 res4[512]; /* 0x600 */ struct location error_location[8]; /* 0x800 */ }; int elm_check_error(u8 *syndrome, u32 nibbles, u32 *error_count, u32 *error_locations); int elm_config(enum bch_level level); void elm_reset(void); void elm_init(void); #endif /* __ASSEMBLY__ */ #endif /* __ASM_ARCH_ELM_H */