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 const struct flash_info winbond_parts[] = { 12 /* Winbond -- w25x "blocks" are 64K, "sectors" are 4KiB */ 13 { "w25x05", INFO(0xef3010, 0, 64 * 1024, 1, SECT_4K) }, 14 { "w25x10", INFO(0xef3011, 0, 64 * 1024, 2, SECT_4K) }, 15 { "w25x20", INFO(0xef3012, 0, 64 * 1024, 4, SECT_4K) }, 16 { "w25x40", INFO(0xef3013, 0, 64 * 1024, 8, SECT_4K) }, 17 { "w25x80", INFO(0xef3014, 0, 64 * 1024, 16, SECT_4K) }, 18 { "w25x16", INFO(0xef3015, 0, 64 * 1024, 32, SECT_4K) }, 19 { "w25q16dw", INFO(0xef6015, 0, 64 * 1024, 32, 20 SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | 21 SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) }, 22 { "w25x32", INFO(0xef3016, 0, 64 * 1024, 64, SECT_4K) }, 23 { "w25q16jv-im/jm", INFO(0xef7015, 0, 64 * 1024, 32, 24 SECT_4K | SPI_NOR_DUAL_READ | 25 SPI_NOR_QUAD_READ | SPI_NOR_HAS_LOCK | 26 SPI_NOR_HAS_TB) }, 27 { "w25q20cl", INFO(0xef4012, 0, 64 * 1024, 4, SECT_4K) }, 28 { "w25q20bw", INFO(0xef5012, 0, 64 * 1024, 4, SECT_4K) }, 29 { "w25q20ew", INFO(0xef6012, 0, 64 * 1024, 4, SECT_4K) }, 30 { "w25q32", INFO(0xef4016, 0, 64 * 1024, 64, SECT_4K) }, 31 { "w25q32dw", INFO(0xef6016, 0, 64 * 1024, 64, 32 SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | 33 SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) }, 34 { "w25q32jv", INFO(0xef7016, 0, 64 * 1024, 64, 35 SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | 36 SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) 37 }, 38 { "w25q32jwm", INFO(0xef8016, 0, 64 * 1024, 64, 39 SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | 40 SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) }, 41 { "w25x64", INFO(0xef3017, 0, 64 * 1024, 128, SECT_4K) }, 42 { "w25q64", INFO(0xef4017, 0, 64 * 1024, 128, SECT_4K) }, 43 { "w25q64dw", INFO(0xef6017, 0, 64 * 1024, 128, 44 SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | 45 SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) }, 46 { "w25q128fw", INFO(0xef6018, 0, 64 * 1024, 256, 47 SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | 48 SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) }, 49 { "w25q128jv", INFO(0xef7018, 0, 64 * 1024, 256, 50 SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | 51 SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) }, 52 { "w25q80", INFO(0xef5014, 0, 64 * 1024, 16, SECT_4K) }, 53 { "w25q80bl", INFO(0xef4014, 0, 64 * 1024, 16, SECT_4K) }, 54 { "w25q128", INFO(0xef4018, 0, 64 * 1024, 256, SECT_4K) }, 55 { "w25q256", INFO(0xef4019, 0, 64 * 1024, 512, 56 SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | 57 SPI_NOR_4B_OPCODES) }, 58 { "w25q256jvm", INFO(0xef7019, 0, 64 * 1024, 512, 59 SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, 60 { "w25q256jw", INFO(0xef6019, 0, 64 * 1024, 512, 61 SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, 62 { "w25m512jv", INFO(0xef7119, 0, 64 * 1024, 1024, 63 SECT_4K | SPI_NOR_QUAD_READ | SPI_NOR_DUAL_READ) }, 64 }; 65 66 /** 67 * winbond_set_4byte_addr_mode() - Set 4-byte address mode for Winbond flashes. 68 * @nor: pointer to 'struct spi_nor'. 69 * @enable: true to enter the 4-byte address mode, false to exit the 4-byte 70 * address mode. 71 * 72 * Return: 0 on success, -errno otherwise. 73 */ 74 static int winbond_set_4byte_addr_mode(struct spi_nor *nor, bool enable) 75 { 76 int ret; 77 78 ret = spi_nor_set_4byte_addr_mode(nor, enable); 79 if (ret || enable) 80 return ret; 81 82 /* 83 * On Winbond W25Q256FV, leaving 4byte mode causes the Extended Address 84 * Register to be set to 1, so all 3-byte-address reads come from the 85 * second 16M. We must clear the register to enable normal behavior. 86 */ 87 ret = spi_nor_write_enable(nor); 88 if (ret) 89 return ret; 90 91 ret = spi_nor_write_ear(nor, 0); 92 if (ret) 93 return ret; 94 95 return spi_nor_write_disable(nor); 96 } 97 98 static void winbond_default_init(struct spi_nor *nor) 99 { 100 nor->params->set_4byte_addr_mode = winbond_set_4byte_addr_mode; 101 } 102 103 static const struct spi_nor_fixups winbond_fixups = { 104 .default_init = winbond_default_init, 105 }; 106 107 const struct spi_nor_manufacturer spi_nor_winbond = { 108 .name = "winbond", 109 .parts = winbond_parts, 110 .nparts = ARRAY_SIZE(winbond_parts), 111 .fixups = &winbond_fixups, 112 }; 113