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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2005, Intec Automation Inc.
* Copyright (C) 2014, Freescale Semiconductor, Inc.
*/
#ifndef __LINUX_MTD_SFDP_H
#define __LINUX_MTD_SFDP_H
/* SFDP revisions */
#define SFDP_JESD216_MAJOR 1
#define SFDP_JESD216_MINOR 0
#define SFDP_JESD216A_MINOR 5
#define SFDP_JESD216B_MINOR 6
/* SFDP DWORDS are indexed from 1 but C arrays are indexed from 0. */
#define SFDP_DWORD(i) ((i) - 1)
#define SFDP_MASK_CHECK(dword, mask) (((dword) & (mask)) == (mask))
/* Basic Flash Parameter Table */
/* JESD216 rev D defines a Basic Flash Parameter Table of 20 DWORDs. */
#define BFPT_DWORD_MAX 20
struct sfdp_bfpt {
u32 dwords[BFPT_DWORD_MAX];
};
/* The first version of JESD216 defined only 9 DWORDs. */
#define BFPT_DWORD_MAX_JESD216 9
#define BFPT_DWORD_MAX_JESD216B 16
/* 1st DWORD. */
#define BFPT_DWORD1_FAST_READ_1_1_2 BIT(16)
#define BFPT_DWORD1_ADDRESS_BYTES_MASK GENMASK(18, 17)
#define BFPT_DWORD1_ADDRESS_BYTES_3_ONLY (0x0UL << 17)
#define BFPT_DWORD1_ADDRESS_BYTES_3_OR_4 (0x1UL << 17)
#define BFPT_DWORD1_ADDRESS_BYTES_4_ONLY (0x2UL << 17)
#define BFPT_DWORD1_DTR BIT(19)
#define BFPT_DWORD1_FAST_READ_1_2_2 BIT(20)
#define BFPT_DWORD1_FAST_READ_1_4_4 BIT(21)
#define BFPT_DWORD1_FAST_READ_1_1_4 BIT(22)
/* 5th DWORD. */
#define BFPT_DWORD5_FAST_READ_2_2_2 BIT(0)
#define BFPT_DWORD5_FAST_READ_4_4_4 BIT(4)
/* 11th DWORD. */
#define BFPT_DWORD11_PAGE_SIZE_SHIFT 4
#define BFPT_DWORD11_PAGE_SIZE_MASK GENMASK(7, 4)
/* 15th DWORD. */
/*
* (from JESD216 rev B)
* Quad Enable Requirements (QER):
* - 000b: Device does not have a QE bit. Device detects 1-1-4 and 1-4-4
* reads based on instruction. DQ3/HOLD# functions are hold during
* instruction phase.
* - 001b: QE is bit 1 of status register 2. It is set via Write Status with
* two data bytes where bit 1 of the second byte is one.
* [...]
* Writing only one byte to the status register has the side-effect of
* clearing status register 2, including the QE bit. The 100b code is
* used if writing one byte to the status register does not modify
* status register 2.
* - 010b: QE is bit 6 of status register 1. It is set via Write Status with
* one data byte where bit 6 is one.
* [...]
* - 011b: QE is bit 7 of status register 2. It is set via Write status
* register 2 instruction 3Eh with one data byte where bit 7 is one.
* [...]
* The status register 2 is read using instruction 3Fh.
* - 100b: QE is bit 1 of status register 2. It is set via Write Status with
* two data bytes where bit 1 of the second byte is one.
* [...]
* In contrast to the 001b code, writing one byte to the status
* register does not modify status register 2.
* - 101b: QE is bit 1 of status register 2. Status register 1 is read using
* Read Status instruction 05h. Status register2 is read using
* instruction 35h. QE is set via Write Status instruction 01h with
* two data bytes where bit 1 of the second byte is one.
* [...]
*/
#define BFPT_DWORD15_QER_MASK GENMASK(22, 20)
#define BFPT_DWORD15_QER_NONE (0x0UL << 20) /* Micron */
#define BFPT_DWORD15_QER_SR2_BIT1_BUGGY (0x1UL << 20)
#define BFPT_DWORD15_QER_SR1_BIT6 (0x2UL << 20) /* Macronix */
#define BFPT_DWORD15_QER_SR2_BIT7 (0x3UL << 20)
#define BFPT_DWORD15_QER_SR2_BIT1_NO_RD (0x4UL << 20)
#define BFPT_DWORD15_QER_SR2_BIT1 (0x5UL << 20) /* Spansion */
#define BFPT_DWORD16_EN4B_MASK GENMASK(31, 24)
#define BFPT_DWORD16_EN4B_ALWAYS_4B BIT(30)
#define BFPT_DWORD16_EN4B_4B_OPCODES BIT(29)
#define BFPT_DWORD16_EN4B_16BIT_NV_CR BIT(28)
#define BFPT_DWORD16_EN4B_BRWR BIT(27)
#define BFPT_DWORD16_EN4B_WREAR BIT(26)
#define BFPT_DWORD16_EN4B_WREN_EN4B BIT(25)
#define BFPT_DWORD16_EN4B_EN4B BIT(24)
#define BFPT_DWORD16_EX4B_MASK GENMASK(18, 14)
#define BFPT_DWORD16_EX4B_16BIT_NV_CR BIT(18)
#define BFPT_DWORD16_EX4B_BRWR BIT(17)
#define BFPT_DWORD16_EX4B_WREAR BIT(16)
#define BFPT_DWORD16_EX4B_WREN_EX4B BIT(15)
#define BFPT_DWORD16_EX4B_EX4B BIT(14)
#define BFPT_DWORD16_4B_ADDR_MODE_MASK \
(BFPT_DWORD16_EN4B_MASK | BFPT_DWORD16_EX4B_MASK)
#define BFPT_DWORD16_4B_ADDR_MODE_16BIT_NV_CR \
(BFPT_DWORD16_EN4B_16BIT_NV_CR | BFPT_DWORD16_EX4B_16BIT_NV_CR)
#define BFPT_DWORD16_4B_ADDR_MODE_BRWR \
(BFPT_DWORD16_EN4B_BRWR | BFPT_DWORD16_EX4B_BRWR)
#define BFPT_DWORD16_4B_ADDR_MODE_WREAR \
(BFPT_DWORD16_EN4B_WREAR | BFPT_DWORD16_EX4B_WREAR)
#define BFPT_DWORD16_4B_ADDR_MODE_WREN_EN4B_EX4B \
(BFPT_DWORD16_EN4B_WREN_EN4B | BFPT_DWORD16_EX4B_WREN_EX4B)
#define BFPT_DWORD16_4B_ADDR_MODE_EN4B_EX4B \
(BFPT_DWORD16_EN4B_EN4B | BFPT_DWORD16_EX4B_EX4B)
#define BFPT_DWORD16_SWRST_EN_RST BIT(12)
#define BFPT_DWORD18_CMD_EXT_MASK GENMASK(30, 29)
#define BFPT_DWORD18_CMD_EXT_REP (0x0UL << 29) /* Repeat */
#define BFPT_DWORD18_CMD_EXT_INV (0x1UL << 29) /* Invert */
#define BFPT_DWORD18_CMD_EXT_RES (0x2UL << 29) /* Reserved */
#define BFPT_DWORD18_CMD_EXT_16B (0x3UL << 29) /* 16-bit opcode */
struct sfdp_parameter_header {
u8 id_lsb;
u8 minor;
u8 major;
u8 length; /* in double words */
u8 parameter_table_pointer[3]; /* byte address */
u8 id_msb;
};
#endif /* __LINUX_MTD_SFDP_H */
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