Tom Rini | 10e4779 | 2018-05-06 17:58:06 -0400 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
Tim Harvey | dcf4066 | 2014-06-02 16:13:18 -0700 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (C) 2014 Gateworks Corporation |
| 4 | * Author: Tim Harvey <tharvey@gateworks.com> |
Tim Harvey | dcf4066 | 2014-06-02 16:13:18 -0700 | [diff] [blame] | 5 | */ |
| 6 | #include <common.h> |
| 7 | #include <nand.h> |
| 8 | #include <malloc.h> |
Stefan Agner | 7152f34 | 2018-06-22 17:19:46 +0200 | [diff] [blame] | 9 | #include "mxs_nand.h" |
Tim Harvey | dcf4066 | 2014-06-02 16:13:18 -0700 | [diff] [blame] | 10 | |
Scott Wood | 2c1b7e1 | 2016-05-30 13:57:55 -0500 | [diff] [blame] | 11 | static struct mtd_info *mtd; |
Tim Harvey | dcf4066 | 2014-06-02 16:13:18 -0700 | [diff] [blame] | 12 | static struct nand_chip nand_chip; |
| 13 | |
| 14 | static void mxs_nand_command(struct mtd_info *mtd, unsigned int command, |
| 15 | int column, int page_addr) |
| 16 | { |
Scott Wood | 17fed14 | 2016-05-30 13:57:56 -0500 | [diff] [blame] | 17 | register struct nand_chip *chip = mtd_to_nand(mtd); |
Tim Harvey | dcf4066 | 2014-06-02 16:13:18 -0700 | [diff] [blame] | 18 | u32 timeo, time_start; |
| 19 | |
| 20 | /* write out the command to the device */ |
| 21 | chip->cmd_ctrl(mtd, command, NAND_CLE); |
| 22 | |
| 23 | /* Serially input address */ |
| 24 | if (column != -1) { |
| 25 | chip->cmd_ctrl(mtd, column, NAND_ALE); |
| 26 | chip->cmd_ctrl(mtd, column >> 8, NAND_ALE); |
| 27 | } |
| 28 | if (page_addr != -1) { |
| 29 | chip->cmd_ctrl(mtd, page_addr, NAND_ALE); |
| 30 | chip->cmd_ctrl(mtd, page_addr >> 8, NAND_ALE); |
| 31 | /* One more address cycle for devices > 128MiB */ |
| 32 | if (chip->chipsize > (128 << 20)) |
| 33 | chip->cmd_ctrl(mtd, page_addr >> 16, NAND_ALE); |
| 34 | } |
| 35 | chip->cmd_ctrl(mtd, NAND_CMD_NONE, 0); |
| 36 | |
| 37 | if (command == NAND_CMD_READ0) { |
| 38 | chip->cmd_ctrl(mtd, NAND_CMD_READSTART, NAND_CLE); |
| 39 | chip->cmd_ctrl(mtd, NAND_CMD_NONE, 0); |
| 40 | } |
| 41 | |
| 42 | /* wait for nand ready */ |
| 43 | ndelay(100); |
| 44 | timeo = (CONFIG_SYS_HZ * 20) / 1000; |
| 45 | time_start = get_timer(0); |
| 46 | while (get_timer(time_start) < timeo) { |
| 47 | if (chip->dev_ready(mtd)) |
| 48 | break; |
| 49 | } |
| 50 | } |
| 51 | |
Jörg Krause | 7440e4b | 2018-01-14 19:26:40 +0100 | [diff] [blame] | 52 | #if defined (CONFIG_SPL_NAND_IDENT) |
| 53 | |
| 54 | /* Trying to detect the NAND flash using ONFi, JEDEC, and (extended) IDs */ |
| 55 | static int mxs_flash_full_ident(struct mtd_info *mtd) |
| 56 | { |
| 57 | int nand_maf_id, nand_dev_id; |
| 58 | struct nand_chip *chip = mtd_to_nand(mtd); |
| 59 | struct nand_flash_dev *type; |
| 60 | |
| 61 | type = nand_get_flash_type(mtd, chip, &nand_maf_id, &nand_dev_id, NULL); |
| 62 | |
| 63 | if (IS_ERR(type)) { |
| 64 | chip->select_chip(mtd, -1); |
| 65 | return PTR_ERR(type); |
| 66 | } |
| 67 | |
| 68 | return 0; |
| 69 | } |
| 70 | |
| 71 | #else |
| 72 | |
| 73 | /* Trying to detect the NAND flash using ONFi only */ |
Jörg Krause | 404a9db | 2018-01-14 19:26:39 +0100 | [diff] [blame] | 74 | static int mxs_flash_onfi_ident(struct mtd_info *mtd) |
Tim Harvey | dcf4066 | 2014-06-02 16:13:18 -0700 | [diff] [blame] | 75 | { |
Scott Wood | 17fed14 | 2016-05-30 13:57:56 -0500 | [diff] [blame] | 76 | register struct nand_chip *chip = mtd_to_nand(mtd); |
Tim Harvey | dcf4066 | 2014-06-02 16:13:18 -0700 | [diff] [blame] | 77 | int i; |
| 78 | u8 mfg_id, dev_id; |
| 79 | u8 id_data[8]; |
| 80 | struct nand_onfi_params *p = &chip->onfi_params; |
| 81 | |
| 82 | /* Reset the chip */ |
| 83 | chip->cmdfunc(mtd, NAND_CMD_RESET, -1, -1); |
| 84 | |
| 85 | /* Send the command for reading device ID */ |
| 86 | chip->cmdfunc(mtd, NAND_CMD_READID, 0x00, -1); |
| 87 | |
| 88 | /* Read manufacturer and device IDs */ |
| 89 | mfg_id = chip->read_byte(mtd); |
| 90 | dev_id = chip->read_byte(mtd); |
| 91 | |
| 92 | /* Try again to make sure */ |
| 93 | chip->cmdfunc(mtd, NAND_CMD_READID, 0x00, -1); |
| 94 | for (i = 0; i < 8; i++) |
| 95 | id_data[i] = chip->read_byte(mtd); |
| 96 | if (id_data[0] != mfg_id || id_data[1] != dev_id) { |
| 97 | printf("second ID read did not match"); |
| 98 | return -1; |
| 99 | } |
| 100 | debug("0x%02x:0x%02x ", mfg_id, dev_id); |
| 101 | |
| 102 | /* read ONFI */ |
| 103 | chip->onfi_version = 0; |
| 104 | chip->cmdfunc(mtd, NAND_CMD_READID, 0x20, -1); |
| 105 | if (chip->read_byte(mtd) != 'O' || chip->read_byte(mtd) != 'N' || |
| 106 | chip->read_byte(mtd) != 'F' || chip->read_byte(mtd) != 'I') { |
| 107 | return -2; |
| 108 | } |
| 109 | |
| 110 | /* we have ONFI, probe it */ |
| 111 | chip->cmdfunc(mtd, NAND_CMD_PARAM, 0, -1); |
| 112 | chip->read_buf(mtd, (uint8_t *)p, sizeof(*p)); |
| 113 | mtd->name = p->model; |
| 114 | mtd->writesize = le32_to_cpu(p->byte_per_page); |
| 115 | mtd->erasesize = le32_to_cpu(p->pages_per_block) * mtd->writesize; |
| 116 | mtd->oobsize = le16_to_cpu(p->spare_bytes_per_page); |
| 117 | chip->chipsize = le32_to_cpu(p->blocks_per_lun); |
| 118 | chip->chipsize *= (uint64_t)mtd->erasesize * p->lun_count; |
| 119 | /* Calculate the address shift from the page size */ |
| 120 | chip->page_shift = ffs(mtd->writesize) - 1; |
| 121 | chip->phys_erase_shift = ffs(mtd->erasesize) - 1; |
| 122 | /* Convert chipsize to number of pages per chip -1 */ |
| 123 | chip->pagemask = (chip->chipsize >> chip->page_shift) - 1; |
| 124 | chip->badblockbits = 8; |
| 125 | |
| 126 | debug("erasesize=%d (>>%d)\n", mtd->erasesize, chip->phys_erase_shift); |
| 127 | debug("writesize=%d (>>%d)\n", mtd->writesize, chip->page_shift); |
| 128 | debug("oobsize=%d\n", mtd->oobsize); |
| 129 | debug("chipsize=%lld\n", chip->chipsize); |
| 130 | |
| 131 | return 0; |
| 132 | } |
| 133 | |
Jörg Krause | 7440e4b | 2018-01-14 19:26:40 +0100 | [diff] [blame] | 134 | #endif /* CONFIG_SPL_NAND_IDENT */ |
| 135 | |
Jörg Krause | 404a9db | 2018-01-14 19:26:39 +0100 | [diff] [blame] | 136 | static int mxs_flash_ident(struct mtd_info *mtd) |
| 137 | { |
| 138 | int ret; |
Jörg Krause | 7440e4b | 2018-01-14 19:26:40 +0100 | [diff] [blame] | 139 | #if defined (CONFIG_SPL_NAND_IDENT) |
| 140 | ret = mxs_flash_full_ident(mtd); |
| 141 | #else |
Jörg Krause | 404a9db | 2018-01-14 19:26:39 +0100 | [diff] [blame] | 142 | ret = mxs_flash_onfi_ident(mtd); |
Jörg Krause | 7440e4b | 2018-01-14 19:26:40 +0100 | [diff] [blame] | 143 | #endif |
Jörg Krause | 404a9db | 2018-01-14 19:26:39 +0100 | [diff] [blame] | 144 | return ret; |
| 145 | } |
| 146 | |
Tim Harvey | dcf4066 | 2014-06-02 16:13:18 -0700 | [diff] [blame] | 147 | static int mxs_read_page_ecc(struct mtd_info *mtd, void *buf, unsigned int page) |
| 148 | { |
Scott Wood | 17fed14 | 2016-05-30 13:57:56 -0500 | [diff] [blame] | 149 | register struct nand_chip *chip = mtd_to_nand(mtd); |
Tim Harvey | dcf4066 | 2014-06-02 16:13:18 -0700 | [diff] [blame] | 150 | int ret; |
| 151 | |
| 152 | chip->cmdfunc(mtd, NAND_CMD_READ0, 0x0, page); |
| 153 | ret = nand_chip.ecc.read_page(mtd, chip, buf, 1, page); |
| 154 | if (ret < 0) { |
| 155 | printf("read_page failed %d\n", ret); |
| 156 | return -1; |
| 157 | } |
| 158 | return 0; |
| 159 | } |
| 160 | |
| 161 | static int is_badblock(struct mtd_info *mtd, loff_t offs, int allowbbt) |
| 162 | { |
Scott Wood | 17fed14 | 2016-05-30 13:57:56 -0500 | [diff] [blame] | 163 | register struct nand_chip *chip = mtd_to_nand(mtd); |
Tim Harvey | dcf4066 | 2014-06-02 16:13:18 -0700 | [diff] [blame] | 164 | unsigned int block = offs >> chip->phys_erase_shift; |
| 165 | unsigned int page = offs >> chip->page_shift; |
| 166 | |
| 167 | debug("%s offs=0x%08x block:%d page:%d\n", __func__, (int)offs, block, |
| 168 | page); |
| 169 | chip->cmdfunc(mtd, NAND_CMD_READ0, mtd->writesize, page); |
| 170 | memset(chip->oob_poi, 0, mtd->oobsize); |
| 171 | chip->read_buf(mtd, chip->oob_poi, mtd->oobsize); |
| 172 | |
| 173 | return chip->oob_poi[0] != 0xff; |
| 174 | } |
| 175 | |
| 176 | /* setup mtd and nand structs and init mxs_nand driver */ |
| 177 | static int mxs_nand_init(void) |
| 178 | { |
| 179 | /* return if already initalized */ |
| 180 | if (nand_chip.numchips) |
| 181 | return 0; |
| 182 | |
| 183 | /* init mxs nand driver */ |
Stefan Agner | 7152f34 | 2018-06-22 17:19:46 +0200 | [diff] [blame] | 184 | mxs_nand_init_spl(&nand_chip); |
Boris Brezillon | 3b5f884 | 2016-06-15 20:56:10 +0200 | [diff] [blame] | 185 | mtd = nand_to_mtd(&nand_chip); |
Tim Harvey | dcf4066 | 2014-06-02 16:13:18 -0700 | [diff] [blame] | 186 | /* set mtd functions */ |
| 187 | nand_chip.cmdfunc = mxs_nand_command; |
| 188 | nand_chip.numchips = 1; |
| 189 | |
| 190 | /* identify flash device */ |
Scott Wood | 2c1b7e1 | 2016-05-30 13:57:55 -0500 | [diff] [blame] | 191 | if (mxs_flash_ident(mtd)) { |
Tim Harvey | dcf4066 | 2014-06-02 16:13:18 -0700 | [diff] [blame] | 192 | printf("Failed to identify\n"); |
| 193 | return -1; |
| 194 | } |
| 195 | |
| 196 | /* allocate and initialize buffers */ |
| 197 | nand_chip.buffers = memalign(ARCH_DMA_MINALIGN, |
| 198 | sizeof(*nand_chip.buffers)); |
Scott Wood | 2c1b7e1 | 2016-05-30 13:57:55 -0500 | [diff] [blame] | 199 | nand_chip.oob_poi = nand_chip.buffers->databuf + mtd->writesize; |
Tim Harvey | dcf4066 | 2014-06-02 16:13:18 -0700 | [diff] [blame] | 200 | /* setup flash layout (does not scan as we override that) */ |
Scott Wood | 2c1b7e1 | 2016-05-30 13:57:55 -0500 | [diff] [blame] | 201 | mtd->size = nand_chip.chipsize; |
| 202 | nand_chip.scan_bbt(mtd); |
Tim Harvey | dcf4066 | 2014-06-02 16:13:18 -0700 | [diff] [blame] | 203 | |
Tim Harvey | dcf4066 | 2014-06-02 16:13:18 -0700 | [diff] [blame] | 204 | return 0; |
| 205 | } |
| 206 | |
| 207 | int nand_spl_load_image(uint32_t offs, unsigned int size, void *buf) |
| 208 | { |
| 209 | struct nand_chip *chip; |
| 210 | unsigned int page; |
| 211 | unsigned int nand_page_per_block; |
| 212 | unsigned int sz = 0; |
| 213 | |
| 214 | if (mxs_nand_init()) |
| 215 | return -ENODEV; |
Scott Wood | 17fed14 | 2016-05-30 13:57:56 -0500 | [diff] [blame] | 216 | chip = mtd_to_nand(mtd); |
Tim Harvey | dcf4066 | 2014-06-02 16:13:18 -0700 | [diff] [blame] | 217 | page = offs >> chip->page_shift; |
Scott Wood | 2c1b7e1 | 2016-05-30 13:57:55 -0500 | [diff] [blame] | 218 | nand_page_per_block = mtd->erasesize / mtd->writesize; |
Tim Harvey | dcf4066 | 2014-06-02 16:13:18 -0700 | [diff] [blame] | 219 | |
| 220 | debug("%s offset:0x%08x len:%d page:%d\n", __func__, offs, size, page); |
| 221 | |
Scott Wood | 2c1b7e1 | 2016-05-30 13:57:55 -0500 | [diff] [blame] | 222 | size = roundup(size, mtd->writesize); |
Tim Harvey | dcf4066 | 2014-06-02 16:13:18 -0700 | [diff] [blame] | 223 | while (sz < size) { |
Scott Wood | 2c1b7e1 | 2016-05-30 13:57:55 -0500 | [diff] [blame] | 224 | if (mxs_read_page_ecc(mtd, buf, page) < 0) |
Tim Harvey | dcf4066 | 2014-06-02 16:13:18 -0700 | [diff] [blame] | 225 | return -1; |
Scott Wood | 2c1b7e1 | 2016-05-30 13:57:55 -0500 | [diff] [blame] | 226 | sz += mtd->writesize; |
| 227 | offs += mtd->writesize; |
Tim Harvey | dcf4066 | 2014-06-02 16:13:18 -0700 | [diff] [blame] | 228 | page++; |
Scott Wood | 2c1b7e1 | 2016-05-30 13:57:55 -0500 | [diff] [blame] | 229 | buf += mtd->writesize; |
Tim Harvey | dcf4066 | 2014-06-02 16:13:18 -0700 | [diff] [blame] | 230 | |
| 231 | /* |
| 232 | * Check if we have crossed a block boundary, and if so |
| 233 | * check for bad block. |
| 234 | */ |
| 235 | if (!(page % nand_page_per_block)) { |
| 236 | /* |
| 237 | * Yes, new block. See if this block is good. If not, |
| 238 | * loop until we find a good block. |
| 239 | */ |
Scott Wood | 2c1b7e1 | 2016-05-30 13:57:55 -0500 | [diff] [blame] | 240 | while (is_badblock(mtd, offs, 1)) { |
Tim Harvey | dcf4066 | 2014-06-02 16:13:18 -0700 | [diff] [blame] | 241 | page = page + nand_page_per_block; |
| 242 | /* Check i we've reached the end of flash. */ |
Scott Wood | 2c1b7e1 | 2016-05-30 13:57:55 -0500 | [diff] [blame] | 243 | if (page >= mtd->size >> chip->page_shift) |
Tim Harvey | dcf4066 | 2014-06-02 16:13:18 -0700 | [diff] [blame] | 244 | return -ENOMEM; |
| 245 | } |
| 246 | } |
| 247 | } |
| 248 | |
| 249 | return 0; |
| 250 | } |
| 251 | |
| 252 | int nand_default_bbt(struct mtd_info *mtd) |
| 253 | { |
| 254 | return 0; |
| 255 | } |
| 256 | |
| 257 | void nand_init(void) |
| 258 | { |
| 259 | } |
| 260 | |
| 261 | void nand_deselect(void) |
| 262 | { |
| 263 | } |
| 264 | |