Thomas Gleixner | c942fdd | 2019-05-27 08:55:06 +0200 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
Boris Brezillon | c51d0ac | 2016-06-08 10:22:19 +0200 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (C) 2017 Free Electrons |
| 4 | * Copyright (C) 2017 NextThing Co |
| 5 | * |
| 6 | * Author: Boris Brezillon <boris.brezillon@free-electrons.com> |
Boris Brezillon | c51d0ac | 2016-06-08 10:22:19 +0200 | [diff] [blame] | 7 | */ |
| 8 | |
Boris Brezillon | 348d56a | 2018-09-07 00:38:48 +0200 | [diff] [blame] | 9 | #include "internals.h" |
Boris Brezillon | c51d0ac | 2016-06-08 10:22:19 +0200 | [diff] [blame] | 10 | |
| 11 | static void samsung_nand_decode_id(struct nand_chip *chip) |
| 12 | { |
| 13 | struct mtd_info *mtd = nand_to_mtd(chip); |
Boris Brezillon | 629a442 | 2018-10-25 17:10:37 +0200 | [diff] [blame] | 14 | struct nand_memory_organization *memorg; |
| 15 | |
| 16 | memorg = nanddev_get_memorg(&chip->base); |
Boris Brezillon | c51d0ac | 2016-06-08 10:22:19 +0200 | [diff] [blame] | 17 | |
| 18 | /* New Samsung (6 byte ID): Samsung K9GAG08U0F (p.44) */ |
| 19 | if (chip->id.len == 6 && !nand_is_slc(chip) && |
| 20 | chip->id.data[5] != 0x00) { |
| 21 | u8 extid = chip->id.data[3]; |
| 22 | |
| 23 | /* Get pagesize */ |
Boris Brezillon | 629a442 | 2018-10-25 17:10:37 +0200 | [diff] [blame] | 24 | memorg->pagesize = 2048 << (extid & 0x03); |
| 25 | mtd->writesize = memorg->pagesize; |
Boris Brezillon | c51d0ac | 2016-06-08 10:22:19 +0200 | [diff] [blame] | 26 | |
| 27 | extid >>= 2; |
| 28 | |
| 29 | /* Get oobsize */ |
| 30 | switch (((extid >> 2) & 0x4) | (extid & 0x3)) { |
| 31 | case 1: |
Boris Brezillon | 629a442 | 2018-10-25 17:10:37 +0200 | [diff] [blame] | 32 | memorg->oobsize = 128; |
Boris Brezillon | c51d0ac | 2016-06-08 10:22:19 +0200 | [diff] [blame] | 33 | break; |
| 34 | case 2: |
Boris Brezillon | 629a442 | 2018-10-25 17:10:37 +0200 | [diff] [blame] | 35 | memorg->oobsize = 218; |
Boris Brezillon | c51d0ac | 2016-06-08 10:22:19 +0200 | [diff] [blame] | 36 | break; |
| 37 | case 3: |
Boris Brezillon | 629a442 | 2018-10-25 17:10:37 +0200 | [diff] [blame] | 38 | memorg->oobsize = 400; |
Boris Brezillon | c51d0ac | 2016-06-08 10:22:19 +0200 | [diff] [blame] | 39 | break; |
| 40 | case 4: |
Boris Brezillon | 629a442 | 2018-10-25 17:10:37 +0200 | [diff] [blame] | 41 | memorg->oobsize = 436; |
Boris Brezillon | c51d0ac | 2016-06-08 10:22:19 +0200 | [diff] [blame] | 42 | break; |
| 43 | case 5: |
Boris Brezillon | 629a442 | 2018-10-25 17:10:37 +0200 | [diff] [blame] | 44 | memorg->oobsize = 512; |
Boris Brezillon | c51d0ac | 2016-06-08 10:22:19 +0200 | [diff] [blame] | 45 | break; |
| 46 | case 6: |
Boris Brezillon | 629a442 | 2018-10-25 17:10:37 +0200 | [diff] [blame] | 47 | memorg->oobsize = 640; |
Boris Brezillon | c51d0ac | 2016-06-08 10:22:19 +0200 | [diff] [blame] | 48 | break; |
| 49 | default: |
| 50 | /* |
| 51 | * We should never reach this case, but if that |
| 52 | * happens, this probably means Samsung decided to use |
| 53 | * a different extended ID format, and we should find |
| 54 | * a way to support it. |
| 55 | */ |
| 56 | WARN(1, "Invalid OOB size value"); |
| 57 | break; |
| 58 | } |
| 59 | |
Boris Brezillon | 629a442 | 2018-10-25 17:10:37 +0200 | [diff] [blame] | 60 | mtd->oobsize = memorg->oobsize; |
| 61 | |
Boris Brezillon | c51d0ac | 2016-06-08 10:22:19 +0200 | [diff] [blame] | 62 | /* Get blocksize */ |
| 63 | extid >>= 2; |
Boris Brezillon | 629a442 | 2018-10-25 17:10:37 +0200 | [diff] [blame] | 64 | memorg->pages_per_eraseblock = (128 * 1024) << |
| 65 | (((extid >> 1) & 0x04) | |
| 66 | (extid & 0x03)) / |
| 67 | memorg->pagesize; |
Boris Brezillon | c51d0ac | 2016-06-08 10:22:19 +0200 | [diff] [blame] | 68 | mtd->erasesize = (128 * 1024) << |
| 69 | (((extid >> 1) & 0x04) | (extid & 0x03)); |
Hans de Goede | 8fc82d4 | 2016-06-08 10:45:28 +0200 | [diff] [blame] | 70 | |
| 71 | /* Extract ECC requirements from 5th id byte*/ |
| 72 | extid = (chip->id.data[4] >> 4) & 0x07; |
| 73 | if (extid < 5) { |
Boris Brezillon | 6a1b66d | 2018-11-04 16:09:42 +0100 | [diff] [blame] | 74 | chip->base.eccreq.step_size = 512; |
| 75 | chip->base.eccreq.strength = 1 << extid; |
Hans de Goede | 8fc82d4 | 2016-06-08 10:45:28 +0200 | [diff] [blame] | 76 | } else { |
Boris Brezillon | 6a1b66d | 2018-11-04 16:09:42 +0100 | [diff] [blame] | 77 | chip->base.eccreq.step_size = 1024; |
Hans de Goede | 8fc82d4 | 2016-06-08 10:45:28 +0200 | [diff] [blame] | 78 | switch (extid) { |
| 79 | case 5: |
Boris Brezillon | 6a1b66d | 2018-11-04 16:09:42 +0100 | [diff] [blame] | 80 | chip->base.eccreq.strength = 24; |
Hans de Goede | 8fc82d4 | 2016-06-08 10:45:28 +0200 | [diff] [blame] | 81 | break; |
| 82 | case 6: |
Boris Brezillon | 6a1b66d | 2018-11-04 16:09:42 +0100 | [diff] [blame] | 83 | chip->base.eccreq.strength = 40; |
Hans de Goede | 8fc82d4 | 2016-06-08 10:45:28 +0200 | [diff] [blame] | 84 | break; |
| 85 | case 7: |
Boris Brezillon | 6a1b66d | 2018-11-04 16:09:42 +0100 | [diff] [blame] | 86 | chip->base.eccreq.strength = 60; |
Hans de Goede | 8fc82d4 | 2016-06-08 10:45:28 +0200 | [diff] [blame] | 87 | break; |
Brian Norris | d241979 | 2017-05-01 17:04:55 -0700 | [diff] [blame] | 88 | default: |
| 89 | WARN(1, "Could not decode ECC info"); |
Boris Brezillon | 6a1b66d | 2018-11-04 16:09:42 +0100 | [diff] [blame] | 90 | chip->base.eccreq.step_size = 0; |
Hans de Goede | 8fc82d4 | 2016-06-08 10:45:28 +0200 | [diff] [blame] | 91 | } |
| 92 | } |
Boris Brezillon | c51d0ac | 2016-06-08 10:22:19 +0200 | [diff] [blame] | 93 | } else { |
| 94 | nand_decode_ext_id(chip); |
Miquel Raynal | 707d815 | 2017-12-07 10:33:58 +0100 | [diff] [blame] | 95 | |
Ladislav Michl | 09ec417 | 2018-01-09 14:19:11 +0100 | [diff] [blame] | 96 | if (nand_is_slc(chip)) { |
| 97 | switch (chip->id.data[1]) { |
| 98 | /* K9F4G08U0D-S[I|C]B0(T00) */ |
| 99 | case 0xDC: |
Boris Brezillon | 6a1b66d | 2018-11-04 16:09:42 +0100 | [diff] [blame] | 100 | chip->base.eccreq.step_size = 512; |
| 101 | chip->base.eccreq.strength = 1; |
Ladislav Michl | 09ec417 | 2018-01-09 14:19:11 +0100 | [diff] [blame] | 102 | break; |
| 103 | |
| 104 | /* K9F1G08U0E 21nm chips do not support subpage write */ |
| 105 | case 0xF1: |
| 106 | if (chip->id.len > 4 && |
| 107 | (chip->id.data[4] & GENMASK(1, 0)) == 0x1) |
| 108 | chip->options |= NAND_NO_SUBPAGE_WRITE; |
| 109 | break; |
| 110 | default: |
| 111 | break; |
| 112 | } |
Miquel Raynal | 707d815 | 2017-12-07 10:33:58 +0100 | [diff] [blame] | 113 | } |
Boris Brezillon | c51d0ac | 2016-06-08 10:22:19 +0200 | [diff] [blame] | 114 | } |
| 115 | } |
| 116 | |
| 117 | static int samsung_nand_init(struct nand_chip *chip) |
| 118 | { |
| 119 | struct mtd_info *mtd = nand_to_mtd(chip); |
| 120 | |
| 121 | if (mtd->writesize > 512) |
| 122 | chip->options |= NAND_SAMSUNG_LP_OPTIONS; |
| 123 | |
| 124 | if (!nand_is_slc(chip)) |
Frieder Schrempf | 04649ec | 2019-04-17 12:36:34 +0000 | [diff] [blame] | 125 | chip->options |= NAND_BBM_LASTPAGE; |
Boris Brezillon | c51d0ac | 2016-06-08 10:22:19 +0200 | [diff] [blame] | 126 | else |
Frieder Schrempf | bb59254 | 2019-04-17 12:36:36 +0000 | [diff] [blame] | 127 | chip->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE; |
Boris Brezillon | c51d0ac | 2016-06-08 10:22:19 +0200 | [diff] [blame] | 128 | |
| 129 | return 0; |
| 130 | } |
| 131 | |
| 132 | const struct nand_manufacturer_ops samsung_nand_manuf_ops = { |
| 133 | .detect = samsung_nand_decode_id, |
| 134 | .init = samsung_nand_init, |
| 135 | }; |