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편집 파일: pfow.h

/* SPDX-License-Identifier: GPL-2.0 */ /* Primary function overlay window definitions * and service functions used by LPDDR chips */ #ifndef __LINUX_MTD_PFOW_H #define __LINUX_MTD_PFOW_H #include <linux/mtd/qinfo.h> /* PFOW registers addressing */ /* Address of symbol "P" */ #define PFOW_QUERY_STRING_P 0x0000 /* Address of symbol "F" */ #define PFOW_QUERY_STRING_F 0x0002 /* Address of symbol "O" */ #define PFOW_QUERY_STRING_O 0x0004 /* Address of symbol "W" */ #define PFOW_QUERY_STRING_W 0x0006 /* Identification info for LPDDR chip */ #define PFOW_MANUFACTURER_ID 0x0020 #define PFOW_DEVICE_ID 0x0022 /* Address in PFOW where prog buffer can be found */ #define PFOW_PROGRAM_BUFFER_OFFSET 0x0040 /* Size of program buffer in words */ #define PFOW_PROGRAM_BUFFER_SIZE 0x0042 /* Address command code register */ #define PFOW_COMMAND_CODE 0x0080 /* command data register */ #define PFOW_COMMAND_DATA 0x0084 /* command address register lower address bits */ #define PFOW_COMMAND_ADDRESS_L 0x0088 /* command address register upper address bits */ #define PFOW_COMMAND_ADDRESS_H 0x008a /* number of bytes to be proggrammed lower address bits */ #define PFOW_DATA_COUNT_L 0x0090 /* number of bytes to be proggrammed higher address bits */ #define PFOW_DATA_COUNT_H 0x0092 /* command execution register, the only possible value is 0x01 */ #define PFOW_COMMAND_EXECUTE 0x00c0 /* 0x01 should be written at this address to clear buffer */ #define PFOW_CLEAR_PROGRAM_BUFFER 0x00c4 /* device program/erase suspend register */ #define PFOW_PROGRAM_ERASE_SUSPEND 0x00c8 /* device status register */ #define PFOW_DSR 0x00cc /* LPDDR memory device command codes */ /* They are possible values of PFOW command code register */ #define LPDDR_WORD_PROGRAM 0x0041 #define LPDDR_BUFF_PROGRAM 0x00E9 #define LPDDR_BLOCK_ERASE 0x0020 #define LPDDR_LOCK_BLOCK 0x0061 #define LPDDR_UNLOCK_BLOCK 0x0062 #define LPDDR_READ_BLOCK_LOCK_STATUS 0x0065 #define LPDDR_INFO_QUERY 0x0098 #define LPDDR_READ_OTP 0x0097 #define LPDDR_PROG_OTP 0x00C0 #define LPDDR_RESUME 0x00D0 /* Defines possible value of PFOW command execution register */ #define LPDDR_START_EXECUTION 0x0001 /* Defines possible value of PFOW program/erase suspend register */ #define LPDDR_SUSPEND 0x0001 /* Possible values of PFOW device status register */ /* access R - read; RC read & clearable */ #define DSR_DPS (1<<1) /* RC; device protect status * 0 - not protected 1 - locked */ #define DSR_PSS (1<<2) /* R; program suspend status; * 0-prog in progress/completed, * 1- prog suspended */ #define DSR_VPPS (1<<3) /* RC; 0-Vpp OK, * 1-Vpp low */ #define DSR_PROGRAM_STATUS (1<<4) /* RC; 0-successful, 1-error */ #define DSR_ERASE_STATUS (1<<5) /* RC; erase or blank check status; * 0-success erase/blank check, * 1 blank check error */ #define DSR_ESS (1<<6) /* R; erase suspend status; * 0-erase in progress/complete, * 1 erase suspended */ #define DSR_READY_STATUS (1<<7) /* R; Device status * 0-busy, * 1-ready */ #define DSR_RPS (0x3<<8) /* RC; region program status * 00 - Success, * 01-re-program attempt in region with * object mode data, * 10-object mode program w attempt in * region with control mode data * 11-attempt to program invalid half * with 0x41 command */ #define DSR_AOS (1<<12) /* RC; 1- AO related failure */ #define DSR_AVAILABLE (1<<15) /* R; Device availbility * 1 - Device available * 0 - not available */ /* The superset of all possible error bits in DSR */ #define DSR_ERR 0x133A static inline void send_pfow_command(struct map_info *map, unsigned long cmd_code, unsigned long adr, unsigned long len, map_word *datum) { int bits_per_chip = map_bankwidth(map) * 8; map_write(map, CMD(cmd_code), map->pfow_base + PFOW_COMMAND_CODE); map_write(map, CMD(adr & ((1<<bits_per_chip) - 1)), map->pfow_base + PFOW_COMMAND_ADDRESS_L); map_write(map, CMD(adr>>bits_per_chip), map->pfow_base + PFOW_COMMAND_ADDRESS_H); if (len) { map_write(map, CMD(len & ((1<<bits_per_chip) - 1)), map->pfow_base + PFOW_DATA_COUNT_L); map_write(map, CMD(len>>bits_per_chip), map->pfow_base + PFOW_DATA_COUNT_H); } if (datum) map_write(map, *datum, map->pfow_base + PFOW_COMMAND_DATA); /* Command execution start */ map_write(map, CMD(LPDDR_START_EXECUTION), map->pfow_base + PFOW_COMMAND_EXECUTE); } #endif /* __LINUX_MTD_PFOW_H */