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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125/* 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 */