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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2005, Intec Automation Inc.
* Copyright (C) 2014, Freescale Semiconductor, Inc.
*/
#include <linux/mtd/spi-nor.h>
#include "core.h"
#define WINBOND_NOR_OP_RDEAR 0xc8 /* Read Extended Address Register */
#define WINBOND_NOR_OP_WREAR 0xc5 /* Write Extended Address Register */
#define WINBOND_NOR_WREAR_OP(buf) \
SPI_MEM_OP(SPI_MEM_OP_CMD(WINBOND_NOR_OP_WREAR, 0), \
SPI_MEM_OP_NO_ADDR, \
SPI_MEM_OP_NO_DUMMY, \
SPI_MEM_OP_DATA_OUT(1, buf, 0))
static int
w25q256_post_bfpt_fixups(struct spi_nor *nor,
const struct sfdp_parameter_header *bfpt_header,
const struct sfdp_bfpt *bfpt)
{
/*
* W25Q256JV supports 4B opcodes but W25Q256FV does not.
* Unfortunately, Winbond has re-used the same JEDEC ID for both
* variants which prevents us from defining a new entry in the parts
* table.
* To differentiate between W25Q256JV and W25Q256FV check SFDP header
* version: only JV has JESD216A compliant structure (version 5).
*/
if (bfpt_header->major == SFDP_JESD216_MAJOR &&
bfpt_header->minor == SFDP_JESD216A_MINOR)
nor->flags |= SNOR_F_4B_OPCODES;
return 0;
}
static const struct spi_nor_fixups w25q256_fixups = {
.post_bfpt = w25q256_post_bfpt_fixups,
};
static const struct flash_info winbond_nor_parts[] = {
{ "w25x05", INFO(0xef3010, 0, 64 * 1024, 1)
NO_SFDP_FLAGS(SECT_4K) },
{ "w25x10", INFO(0xef3011, 0, 64 * 1024, 2)
NO_SFDP_FLAGS(SECT_4K) },
{ "w25x20", INFO(0xef3012, 0, 64 * 1024, 4)
NO_SFDP_FLAGS(SECT_4K) },
{ "w25x40", INFO(0xef3013, 0, 64 * 1024, 8)
NO_SFDP_FLAGS(SECT_4K) },
{ "w25x80", INFO(0xef3014, 0, 64 * 1024, 16)
NO_SFDP_FLAGS(SECT_4K) },
{ "w25x16", INFO(0xef3015, 0, 64 * 1024, 32)
NO_SFDP_FLAGS(SECT_4K) },
{ "w25q16dw", INFO(0xef6015, 0, 64 * 1024, 32)
FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ |
SPI_NOR_QUAD_READ) },
{ "w25x32", INFO(0xef3016, 0, 64 * 1024, 64)
NO_SFDP_FLAGS(SECT_4K) },
{ "w25q16jv-im/jm", INFO(0xef7015, 0, 64 * 1024, 32)
FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ |
SPI_NOR_QUAD_READ) },
{ "w25q20cl", INFO(0xef4012, 0, 64 * 1024, 4)
NO_SFDP_FLAGS(SECT_4K) },
{ "w25q20bw", INFO(0xef5012, 0, 64 * 1024, 4)
NO_SFDP_FLAGS(SECT_4K) },
{ "w25q20ew", INFO(0xef6012, 0, 64 * 1024, 4)
NO_SFDP_FLAGS(SECT_4K) },
{ "w25q32", INFO(0xef4016, 0, 64 * 1024, 64)
NO_SFDP_FLAGS(SECT_4K) },
{ "w25q32dw", INFO(0xef6016, 0, 64 * 1024, 64)
FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
OTP_INFO(256, 3, 0x1000, 0x1000) },
{ "w25q32jv", INFO(0xef7016, 0, 64 * 1024, 64)
FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ |
SPI_NOR_QUAD_READ) },
{ "w25q32jwm", INFO(0xef8016, 0, 64 * 1024, 64)
FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
OTP_INFO(256, 3, 0x1000, 0x1000) },
{ "w25q64jwm", INFO(0xef8017, 0, 64 * 1024, 128)
FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ |
SPI_NOR_QUAD_READ) },
{ "w25q128jwm", INFO(0xef8018, 0, 64 * 1024, 256)
FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ |
SPI_NOR_QUAD_READ) },
{ "w25q256jwm", INFO(0xef8019, 0, 64 * 1024, 512)
FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ |
SPI_NOR_QUAD_READ) },
{ "w25x64", INFO(0xef3017, 0, 64 * 1024, 128)
NO_SFDP_FLAGS(SECT_4K) },
{ "w25q64", INFO(0xef4017, 0, 64 * 1024, 128)
NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ |
SPI_NOR_QUAD_READ) },
{ "w25q64dw", INFO(0xef6017, 0, 64 * 1024, 128)
FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ |
SPI_NOR_QUAD_READ) },
{ "w25q64jvm", INFO(0xef7017, 0, 64 * 1024, 128)
NO_SFDP_FLAGS(SECT_4K) },
{ "w25q128fw", INFO(0xef6018, 0, 64 * 1024, 256)
FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ |
SPI_NOR_QUAD_READ) },
{ "w25q128jv", INFO(0xef7018, 0, 64 * 1024, 256)
FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ |
SPI_NOR_QUAD_READ) },
{ "w25q80", INFO(0xef5014, 0, 64 * 1024, 16)
NO_SFDP_FLAGS(SECT_4K) },
{ "w25q80bl", INFO(0xef4014, 0, 64 * 1024, 16)
NO_SFDP_FLAGS(SECT_4K) },
{ "w25q128", INFO(0xef4018, 0, 0, 0)
FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) },
{ "w25q256", INFO(0xef4019, 0, 64 * 1024, 512)
NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
.fixups = &w25q256_fixups },
{ "w25q256jvm", INFO(0xef7019, 0, 64 * 1024, 0) },
{ "w25q256jw", INFO(0xef6019, 0, 64 * 1024, 512)
NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ |
SPI_NOR_QUAD_READ) },
{ "w25m512jv", INFO(0xef7119, 0, 64 * 1024, 1024)
NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ |
SPI_NOR_DUAL_READ) },
{ "w25q512nwq", INFO(0xef6020, 0, 0, 0)
OTP_INFO(256, 3, 0x1000, 0x1000) },
{ "w25q512nwm", INFO(0xef8020, 0, 64 * 1024, 0)
OTP_INFO(256, 3, 0x1000, 0x1000) },
{ "w25q512jvq", INFO(0xef4020, 0, 64 * 1024, 1024)
NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ |
SPI_NOR_QUAD_READ) },
};
/**
* winbond_nor_write_ear() - Write Extended Address Register.
* @nor: pointer to 'struct spi_nor'.
* @ear: value to write to the Extended Address Register.
*
* Return: 0 on success, -errno otherwise.
*/
static int winbond_nor_write_ear(struct spi_nor *nor, u8 ear)
{
int ret;
nor->bouncebuf[0] = ear;
if (nor->spimem) {
struct spi_mem_op op = WINBOND_NOR_WREAR_OP(nor->bouncebuf);
spi_nor_spimem_setup_op(nor, &op, nor->reg_proto);
ret = spi_mem_exec_op(nor->spimem, &op);
} else {
ret = spi_nor_controller_ops_write_reg(nor,
WINBOND_NOR_OP_WREAR,
nor->bouncebuf, 1);
}
if (ret)
dev_dbg(nor->dev, "error %d writing EAR\n", ret);
return ret;
}
/**
* winbond_nor_set_4byte_addr_mode() - Set 4-byte address mode for Winbond
* flashes.
* @nor: pointer to 'struct spi_nor'.
* @enable: true to enter the 4-byte address mode, false to exit the 4-byte
* address mode.
*
* Return: 0 on success, -errno otherwise.
*/
static int winbond_nor_set_4byte_addr_mode(struct spi_nor *nor, bool enable)
{
int ret;
ret = spi_nor_set_4byte_addr_mode_en4b_ex4b(nor, enable);
if (ret || enable)
return ret;
/*
* On Winbond W25Q256FV, leaving 4byte mode causes the Extended Address
* Register to be set to 1, so all 3-byte-address reads come from the
* second 16M. We must clear the register to enable normal behavior.
*/
ret = spi_nor_write_enable(nor);
if (ret)
return ret;
ret = winbond_nor_write_ear(nor, 0);
if (ret)
return ret;
return spi_nor_write_disable(nor);
}
static const struct spi_nor_otp_ops winbond_nor_otp_ops = {
.read = spi_nor_otp_read_secr,
.write = spi_nor_otp_write_secr,
.erase = spi_nor_otp_erase_secr,
.lock = spi_nor_otp_lock_sr2,
.is_locked = spi_nor_otp_is_locked_sr2,
};
static int winbond_nor_late_init(struct spi_nor *nor)
{
struct spi_nor_flash_parameter *params = nor->params;
if (params->otp.org)
params->otp.ops = &winbond_nor_otp_ops;
/*
* Winbond seems to require that the Extended Address Register to be set
* to zero when exiting the 4-Byte Address Mode, at least for W25Q256FV.
* This requirement is not described in the JESD216 SFDP standard, thus
* it is Winbond specific. Since we do not know if other Winbond flashes
* have the same requirement, play safe and overwrite the method parsed
* from BFPT, if any.
*/
params->set_4byte_addr_mode = winbond_nor_set_4byte_addr_mode;
return 0;
}
static const struct spi_nor_fixups winbond_nor_fixups = {
.late_init = winbond_nor_late_init,
};
const struct spi_nor_manufacturer spi_nor_winbond = {
.name = "winbond",
.parts = winbond_nor_parts,
.nparts = ARRAY_SIZE(winbond_nor_parts),
.fixups = &winbond_nor_fixups,
};
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