1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (C) 2005, Intec Automation Inc. 4 * Copyright (C) 2014, Freescale Semiconductor, Inc. 5 */ 6 7 #include <linux/mtd/spi-nor.h> 8 9 #include "core.h" 10 11 static int 12 w25q256_post_bfpt_fixups(struct spi_nor *nor, 13 const struct sfdp_parameter_header *bfpt_header, 14 const struct sfdp_bfpt *bfpt) 15 { 16 /* 17 * W25Q256JV supports 4B opcodes but W25Q256FV does not. 18 * Unfortunately, Winbond has re-used the same JEDEC ID for both 19 * variants which prevents us from defining a new entry in the parts 20 * table. 21 * To differentiate between W25Q256JV and W25Q256FV check SFDP header 22 * version: only JV has JESD216A compliant structure (version 5). 23 */ 24 if (bfpt_header->major == SFDP_JESD216_MAJOR && 25 bfpt_header->minor == SFDP_JESD216A_MINOR) 26 nor->flags |= SNOR_F_4B_OPCODES; 27 28 return 0; 29 } 30 31 static struct spi_nor_fixups w25q256_fixups = { 32 .post_bfpt = w25q256_post_bfpt_fixups, 33 }; 34 35 static const struct flash_info winbond_parts[] = { 36 /* Winbond -- w25x "blocks" are 64K, "sectors" are 4KiB */ 37 { "w25x05", INFO(0xef3010, 0, 64 * 1024, 1, SECT_4K) }, 38 { "w25x10", INFO(0xef3011, 0, 64 * 1024, 2, SECT_4K) }, 39 { "w25x20", INFO(0xef3012, 0, 64 * 1024, 4, SECT_4K) }, 40 { "w25x40", INFO(0xef3013, 0, 64 * 1024, 8, SECT_4K) }, 41 { "w25x80", INFO(0xef3014, 0, 64 * 1024, 16, SECT_4K) }, 42 { "w25x16", INFO(0xef3015, 0, 64 * 1024, 32, SECT_4K) }, 43 { "w25q16dw", INFO(0xef6015, 0, 64 * 1024, 32, 44 SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | 45 SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) }, 46 { "w25x32", INFO(0xef3016, 0, 64 * 1024, 64, SECT_4K) }, 47 { "w25q16jv-im/jm", INFO(0xef7015, 0, 64 * 1024, 32, 48 SECT_4K | SPI_NOR_DUAL_READ | 49 SPI_NOR_QUAD_READ | SPI_NOR_HAS_LOCK | 50 SPI_NOR_HAS_TB) }, 51 { "w25q20cl", INFO(0xef4012, 0, 64 * 1024, 4, SECT_4K) }, 52 { "w25q20bw", INFO(0xef5012, 0, 64 * 1024, 4, SECT_4K) }, 53 { "w25q20ew", INFO(0xef6012, 0, 64 * 1024, 4, SECT_4K) }, 54 { "w25q32", INFO(0xef4016, 0, 64 * 1024, 64, SECT_4K) }, 55 { "w25q32dw", INFO(0xef6016, 0, 64 * 1024, 64, 56 SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | 57 SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) 58 OTP_INFO(256, 3, 0x1000, 0x1000) 59 }, 60 61 { "w25q32jv", INFO(0xef7016, 0, 64 * 1024, 64, 62 SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | 63 SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) 64 }, 65 { "w25q32jwm", INFO(0xef8016, 0, 64 * 1024, 64, 66 SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | 67 SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) 68 OTP_INFO(256, 3, 0x1000, 0x1000) }, 69 { "w25q64jwm", INFO(0xef8017, 0, 64 * 1024, 128, 70 SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | 71 SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) }, 72 { "w25q128jwm", INFO(0xef8018, 0, 64 * 1024, 256, 73 SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | 74 SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) }, 75 { "w25q256jwm", INFO(0xef8019, 0, 64 * 1024, 512, 76 SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | 77 SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) }, 78 { "w25x64", INFO(0xef3017, 0, 64 * 1024, 128, SECT_4K) }, 79 { "w25q64", INFO(0xef4017, 0, 64 * 1024, 128, 80 SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, 81 { "w25q64dw", INFO(0xef6017, 0, 64 * 1024, 128, 82 SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | 83 SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) }, 84 { "w25q64jvm", INFO(0xef7017, 0, 64 * 1024, 128, SECT_4K) }, 85 { "w25q128fw", INFO(0xef6018, 0, 64 * 1024, 256, 86 SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | 87 SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) }, 88 { "w25q128jv", INFO(0xef7018, 0, 64 * 1024, 256, 89 SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | 90 SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) }, 91 { "w25q80", INFO(0xef5014, 0, 64 * 1024, 16, SECT_4K) }, 92 { "w25q80bl", INFO(0xef4014, 0, 64 * 1024, 16, SECT_4K) }, 93 { "w25q128", INFO(0xef4018, 0, 64 * 1024, 256, SECT_4K) }, 94 { "w25q256", INFO(0xef4019, 0, 64 * 1024, 512, 95 SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) 96 .fixups = &w25q256_fixups }, 97 { "w25q256jvm", INFO(0xef7019, 0, 64 * 1024, 512, 98 SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, 99 { "w25q256jw", INFO(0xef6019, 0, 64 * 1024, 512, 100 SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, 101 { "w25m512jv", INFO(0xef7119, 0, 64 * 1024, 1024, 102 SECT_4K | SPI_NOR_QUAD_READ | SPI_NOR_DUAL_READ) }, 103 { "w25q512jvq", INFO(0xef4020, 0, 64 * 1024, 1024, 104 SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, 105 }; 106 107 /** 108 * winbond_set_4byte_addr_mode() - Set 4-byte address mode for Winbond flashes. 109 * @nor: pointer to 'struct spi_nor'. 110 * @enable: true to enter the 4-byte address mode, false to exit the 4-byte 111 * address mode. 112 * 113 * Return: 0 on success, -errno otherwise. 114 */ 115 static int winbond_set_4byte_addr_mode(struct spi_nor *nor, bool enable) 116 { 117 int ret; 118 119 ret = spi_nor_set_4byte_addr_mode(nor, enable); 120 if (ret || enable) 121 return ret; 122 123 /* 124 * On Winbond W25Q256FV, leaving 4byte mode causes the Extended Address 125 * Register to be set to 1, so all 3-byte-address reads come from the 126 * second 16M. We must clear the register to enable normal behavior. 127 */ 128 ret = spi_nor_write_enable(nor); 129 if (ret) 130 return ret; 131 132 ret = spi_nor_write_ear(nor, 0); 133 if (ret) 134 return ret; 135 136 return spi_nor_write_disable(nor); 137 } 138 139 static const struct spi_nor_otp_ops winbond_otp_ops = { 140 .read = spi_nor_otp_read_secr, 141 .write = spi_nor_otp_write_secr, 142 .lock = spi_nor_otp_lock_sr2, 143 .is_locked = spi_nor_otp_is_locked_sr2, 144 }; 145 146 static void winbond_default_init(struct spi_nor *nor) 147 { 148 nor->params->set_4byte_addr_mode = winbond_set_4byte_addr_mode; 149 if (nor->params->otp.org->n_regions) 150 nor->params->otp.ops = &winbond_otp_ops; 151 } 152 153 static const struct spi_nor_fixups winbond_fixups = { 154 .default_init = winbond_default_init, 155 }; 156 157 const struct spi_nor_manufacturer spi_nor_winbond = { 158 .name = "winbond", 159 .parts = winbond_parts, 160 .nparts = ARRAY_SIZE(winbond_parts), 161 .fixups = &winbond_fixups, 162 }; 163