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