From: Michael Trimarchi michael@amarulasolutions.com
Upstream linux commit 229204da53b31d.
Move AMD/Spansion specific initialization/detection logic into nand_amd.c. This is part of the "separate vendor specific code from core" cleanup process.
Signed-off-by: Michael Trimarchi michael@amarulasolutions.com Signed-off-by: Dario Binacchi dario.binacchi@amarulasolutions.com ---
Changes in v3: - Use commit sha1 with 13 digits. - Add the SPDX-License-Identifier tag. - Fix code style warnings raised by patman.
Changes in v2: - Use short-commit form - Remove linux info. Uboot seems that backport without add this extra information. - Adjust the include file in nand_amd.
drivers/mtd/nand/raw/Makefile | 4 ++- drivers/mtd/nand/raw/nand_amd.c | 52 ++++++++++++++++++++++++++++++++ drivers/mtd/nand/raw/nand_base.c | 17 +---------- drivers/mtd/nand/raw/nand_ids.c | 2 +- include/linux/mtd/rawnand.h | 1 + 5 files changed, 58 insertions(+), 18 deletions(-) create mode 100644 drivers/mtd/nand/raw/nand_amd.c
diff --git a/drivers/mtd/nand/raw/Makefile b/drivers/mtd/nand/raw/Makefile index 8ef30b45fd2d..9c2ced9925d8 100644 --- a/drivers/mtd/nand/raw/Makefile +++ b/drivers/mtd/nand/raw/Makefile @@ -14,7 +14,8 @@ obj-$(CONFIG_SPL_NAND_DENALI) += denali_spl.o obj-$(CONFIG_SPL_NAND_SIMPLE) += nand_spl_simple.o obj-$(CONFIG_SPL_NAND_LOAD) += nand_spl_load.o obj-$(CONFIG_SPL_NAND_ECC) += nand_ecc.o -obj-$(CONFIG_SPL_NAND_BASE) += nand_base.o nand_hynix.o nand_micron.o nand_samsung.o nand_toshiba.o +obj-$(CONFIG_SPL_NAND_BASE) += nand_base.o nand_amd.o nand_hynix.o nand_micron.o \ + nand_samsung.o nand_toshiba.o obj-$(CONFIG_SPL_NAND_IDENT) += nand_ids.o nand_timings.o obj-$(CONFIG_TPL_NAND_INIT) += nand.o ifeq ($(CONFIG_SPL_ENV_SUPPORT),y) @@ -31,6 +32,7 @@ obj-y += nand_ids.o obj-y += nand_util.o obj-y += nand_ecc.o obj-y += nand_base.o +obj-y += nand_amd.o obj-y += nand_hynix.o obj-y += nand_micron.o obj-y += nand_samsung.o diff --git a/drivers/mtd/nand/raw/nand_amd.c b/drivers/mtd/nand/raw/nand_amd.c new file mode 100644 index 000000000000..e02b8c79dba2 --- /dev/null +++ b/drivers/mtd/nand/raw/nand_amd.c @@ -0,0 +1,52 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2017 Free Electrons + * Copyright (C) 2017 NextThing Co + * + * Author: Boris Brezillon boris.brezillon@free-electrons.com + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/mtd/rawnand.h> + +static void amd_nand_decode_id(struct nand_chip *chip) +{ + struct mtd_info *mtd = nand_to_mtd(chip); + + nand_decode_ext_id(chip); + + /* + * Check for Spansion/AMD ID + repeating 5th, 6th byte since + * some Spansion chips have erasesize that conflicts with size + * listed in nand_ids table. + * Data sheet (5 byte ID): Spansion S30ML-P ORNAND (p.39) + */ + if (chip->id.data[4] != 0x00 && chip->id.data[5] == 0x00 && + chip->id.data[6] == 0x00 && chip->id.data[7] == 0x00 && + mtd->writesize == 512) { + mtd->erasesize = 128 * 1024; + mtd->erasesize <<= ((chip->id.data[3] & 0x03) << 1); + } +} + +static int amd_nand_init(struct nand_chip *chip) +{ + if (nand_is_slc(chip)) + chip->bbt_options |= NAND_BBT_SCAN2NDPAGE; + + return 0; +} + +const struct nand_manufacturer_ops amd_nand_manuf_ops = { + .detect = amd_nand_decode_id, + .init = amd_nand_init, +}; diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c index fe7e049d4064..68e6f4f14347 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -4200,7 +4200,6 @@ static int nand_manufacturer_init(struct nand_chip *chip) static void nand_decode_id(struct nand_chip *chip, struct nand_flash_dev *type) { struct mtd_info *mtd = &chip->mtd; - int maf_id = chip->id.data[0];
mtd->erasesize = type->erasesize; mtd->writesize = type->pagesize; @@ -4208,19 +4207,6 @@ static void nand_decode_id(struct nand_chip *chip, struct nand_flash_dev *type)
/* All legacy ID NAND are small-page, SLC */ chip->bits_per_cell = 1; - - /* - * Check for Spansion/AMD ID + repeating 5th, 6th byte since - * some Spansion chips have erasesize that conflicts with size - * listed in nand_ids table. - * Data sheet (5 byte ID): Spansion S30ML-P ORNAND (p.39) - */ - if (maf_id == NAND_MFR_AMD && chip->id.data[4] != 0x00 && - chip->id.data[5] == 0x00 && chip->id.data[6] == 0x00 && - chip->id.data[7] == 0x00 && mtd->writesize == 512) { - mtd->erasesize = 128 * 1024; - mtd->erasesize <<= ((chip->id.data[3] & 0x03) << 1); - } }
/* @@ -4245,8 +4231,7 @@ static void nand_decode_bbm_options(struct mtd_info *mtd, * Micron devices with 2KiB pages and on SLC Samsung, Hynix, Toshiba, * AMD/Spansion, and Macronix. All others scan only the first page. */ - if (nand_is_slc(chip) && - (maf_id == NAND_MFR_AMD || maf_id == NAND_MFR_MACRONIX)) + if (nand_is_slc(chip) && maf_id == NAND_MFR_MACRONIX) chip->bbt_options |= NAND_BBT_SCAN2NDPAGE; }
diff --git a/drivers/mtd/nand/raw/nand_ids.c b/drivers/mtd/nand/raw/nand_ids.c index bb5ac8337fde..c78f2e088040 100644 --- a/drivers/mtd/nand/raw/nand_ids.c +++ b/drivers/mtd/nand/raw/nand_ids.c @@ -196,7 +196,7 @@ struct nand_manufacturers nand_manuf_ids[] = { {NAND_MFR_STMICRO, "ST Micro"}, {NAND_MFR_HYNIX, "Hynix", &hynix_nand_manuf_ops}, {NAND_MFR_MICRON, "Micron", µn_nand_manuf_ops}, - {NAND_MFR_AMD, "AMD/Spansion"}, + {NAND_MFR_AMD, "AMD/Spansion", &amd_nand_manuf_ops}, {NAND_MFR_MACRONIX, "Macronix"}, {NAND_MFR_EON, "Eon"}, {NAND_MFR_SANDISK, "SanDisk"}, diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h index ec0f77b24bd6..bb1a359a9c14 100644 --- a/include/linux/mtd/rawnand.h +++ b/include/linux/mtd/rawnand.h @@ -1142,6 +1142,7 @@ extern const struct nand_manufacturer_ops toshiba_nand_manuf_ops; extern const struct nand_manufacturer_ops samsung_nand_manuf_ops; extern const struct nand_manufacturer_ops hynix_nand_manuf_ops; extern const struct nand_manufacturer_ops micron_nand_manuf_ops; +extern const struct nand_manufacturer_ops amd_nand_manuf_ops;
int nand_default_bbt(struct mtd_info *mtd); int nand_markbad_bbt(struct mtd_info *mtd, loff_t offs);