nand_micron.c revision 1.3
1 /* $NetBSD: nand_micron.c,v 1.3 2011/03/18 16:46:04 ahoka Exp $ */ 2 /*- 3 * Copyright (c) 2011 Department of Software Engineering, 4 * University of Szeged, Hungary 5 * Copyright (c) 2011 Adam Hoka <ahoka (at) NetBSD.org> 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by the Department of Software Engineering, University of Szeged, Hungary 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 25 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 27 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 28 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 /* 34 * Device specific functions for legacy Micron NAND chips 35 * 36 * Currently supported: 37 * MT29F2G08AACWP, MT29F4G08BACWP, MT29F8G08FACWP 38 */ 39 40 #include "nand.h" 41 #include "onfi.h" 42 43 #define MT29F2G08AAC 0xda 44 #define MT29F2G08ABC 0xaa 45 #define MT29F2G16AAC 0xca 46 #define MT29F2G16ABC 0xba 47 #define MT29F4G08BAC 0xdc 48 #define MT29F8G08FAC 0xdc /* each 4GB section */ 49 50 #define MT29FxG_PARAM_WIDTH(p) (((p) >> 1) & __BIT(0)) 51 #define MT29FxG_PAGESIZE (2 * 1024) 52 #define MT29FxG_BLOCK_PAGES 64 /* pages per block */ 53 #define MT29FxG_BLOCKSIZE (128 * 1024) /* not including spares */ 54 #define MT29FxG_SPARESIZE 64 55 56 struct nand_micron_devices { 57 const char *name; 58 uint8_t id; 59 uint8_t width; /* bus width */ 60 u_int lun_blocks; /* number of blocks per LUN */ 61 u_int num_luns; /* number LUNs */ 62 }; 63 64 static const struct nand_micron_devices nand_micron_devices[] = { 65 { "MT29F2G08AAC", MT29F2G08AAC, 8, 2048, 1 }, 66 { "MT29F2G08ABC", MT29F2G08ABC, 8, 2048, 1 }, 67 { "MT29F2G16AAC", MT29F2G16AAC, 16, 2048, 1 }, 68 { "MT29F2G16ABC", MT29F2G16ABC, 16, 2048, 1 }, 69 { "MT29F4G08BAC", MT29F4G08BAC, 8, 4096, 1 }, 70 #ifdef NOTYET 71 /* how do we recognize/match this? */ 72 { "MT29F8G08FAC", MT29F8G08FAC, 8, 4096, 2 }, 73 #endif 74 }; 75 76 static int mt29fxgx_parameters(device_t, struct nand_chip *, u_int8_t, uint8_t); 77 78 static const struct nand_micron_devices * 79 nand_micron_device_lookup(u_int8_t id) 80 { 81 for (int i=0; i < __arraycount(nand_micron_devices); i++) 82 if (nand_micron_devices[i].id == id) 83 return &nand_micron_devices[i]; 84 return NULL; 85 } 86 87 int 88 nand_read_parameters_micron(device_t self, struct nand_chip *chip) 89 { 90 uint8_t mfgrid; 91 uint8_t devid; 92 uint8_t dontcare; 93 uint8_t params; 94 95 KASSERT(chip->nc_manf_id == NAND_MFR_MICRON); 96 switch (chip->nc_manf_id) { 97 case NAND_MFR_MICRON: 98 break; 99 default: 100 return 1; 101 } 102 103 nand_select(self, true); 104 nand_command(self, ONFI_READ_ID); 105 nand_address(self, 0x00); 106 nand_read_byte(self, &mfgrid); 107 nand_read_byte(self, &devid); 108 nand_read_byte(self, &dontcare); 109 nand_read_byte(self, ¶ms); 110 nand_select(self, false); 111 112 KASSERT(chip->nc_manf_id == mfgrid); 113 114 switch(devid) { 115 case MT29F2G08AAC: 116 case MT29F2G08ABC: 117 case MT29F2G16AAC: 118 case MT29F2G16ABC: 119 case MT29F4G08BAC: 120 return mt29fxgx_parameters(self, chip, devid, params); 121 default: 122 aprint_error_dev(self, "unsupported device id %#x\n", devid); 123 return 1; 124 } 125 } 126 127 static int 128 mt29fxgx_parameters(device_t self, struct nand_chip *chip, 129 u_int8_t devid, uint8_t params) 130 { 131 const struct nand_micron_devices *dp; 132 const char *vendor = "Micron"; 133 134 dp = nand_micron_device_lookup(devid); 135 if (dp == NULL) { 136 aprint_error_dev(self, "unknown device id %#x\n", devid); 137 return 1; 138 } 139 140 /* 141 * MT29FxGx params across models are the same 142 * except for luns, blocks per lun, and bus width 143 * (and voltage) 144 */ 145 chip->nc_addr_cycles_column = 2; /* XXX */ 146 chip->nc_addr_cycles_row = 3; /* XXX */ 147 if (dp->width == 16) 148 chip->nc_flags |= NC_BUSWIDTH_16; 149 chip->nc_page_size = MT29FxG_PAGESIZE; 150 chip->nc_block_pages = MT29FxG_BLOCK_PAGES; 151 chip->nc_block_size = MT29FxG_BLOCK_PAGES * MT29FxG_PAGESIZE; 152 chip->nc_spare_size = MT29FxG_SPARESIZE; 153 chip->nc_lun_blocks = dp->lun_blocks; 154 chip->nc_num_luns = dp->num_luns; 155 chip->nc_size = MT29FxG_PAGESIZE * MT29FxG_BLOCK_PAGES * 156 dp->lun_blocks * dp->num_luns; 157 158 aprint_normal_dev(self, "%s %s, size %zuMB\n", 159 vendor, dp->name, chip->nc_size >> 20); 160 161 return 0; 162 } 163
Indexes created Thu Oct 02 14:10:14 GMT 2025