mirror of
https://github.com/torvalds/linux.git
synced 2024-11-22 12:11:40 +00:00
4bd14b2fd8
According to the datasheets, the ESMT chips in question will return a 5
byte long identification code where the last 3 bytes are the JEDEC
continuation codes (7Fh). Although, I would have expected 4 continuation
codes as Powerchip Semiconductor (C8h, corresponding to the parameter
page data) is located in bank 5 of the JEDEC database.
By matching the full 5 bytes we can avoid clashes with GigaDevice NAND
flashes.
This fix allows the MT7688-based GARDENA smart Gateway to boot again.
Fixes: aa08bf187f ("mtd: spinand: esmt: add support for F50D2G41KA")
Signed-off-by: Ezra Buehler <ezra.buehler@husqvarnagroup.com>
Reviewed-by: Martin Kurbanov <mmkurbanov@salutedevices.com>
Tested-by: Martin Kurbanov <mmkurbanov@salutedevices.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20240125200108.24374-3-ezra@easyb.ch
148 lines
5.4 KiB
C
148 lines
5.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Author:
|
|
* Chuanhong Guo <gch981213@gmail.com> - the main driver logic
|
|
* Martin Kurbanov <mmkurbanov@sberdevices.ru> - OOB layout
|
|
*/
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/mtd/spinand.h>
|
|
|
|
/* ESMT uses GigaDevice 0xc8 JECDEC ID on some SPI NANDs */
|
|
#define SPINAND_MFR_ESMT_C8 0xc8
|
|
|
|
static SPINAND_OP_VARIANTS(read_cache_variants,
|
|
SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),
|
|
SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0),
|
|
SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0),
|
|
SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0));
|
|
|
|
static SPINAND_OP_VARIANTS(write_cache_variants,
|
|
SPINAND_PROG_LOAD_X4(true, 0, NULL, 0),
|
|
SPINAND_PROG_LOAD(true, 0, NULL, 0));
|
|
|
|
static SPINAND_OP_VARIANTS(update_cache_variants,
|
|
SPINAND_PROG_LOAD_X4(false, 0, NULL, 0),
|
|
SPINAND_PROG_LOAD(false, 0, NULL, 0));
|
|
|
|
/*
|
|
* OOB spare area map (64 bytes)
|
|
*
|
|
* Bad Block Markers
|
|
* filled by HW and kernel Reserved
|
|
* | +-----------------------+-----------------------+
|
|
* | | | |
|
|
* | | OOB free data Area |non ECC protected |
|
|
* | +-------------|-----+-----------------|-----+-----------------|-----+
|
|
* | | | | | | | |
|
|
* +-|---|----------+--|-----|--------------+--|-----|--------------+--|-----|--------------+
|
|
* | | | section0 | | | section1 | | | section2 | | | section3 |
|
|
* +-v-+-v-+---+----+--v--+--v--+-----+-----+--v--+--v--+-----+-----+--v--+--v--+-----+-----+
|
|
* | | | | | | | | | | | | | | | | |
|
|
* |0:1|2:3|4:7|8:15|16:17|18:19|20:23|24:31|32:33|34:35|36:39|40:47|48:49|50:51|52:55|56:63|
|
|
* | | | | | | | | | | | | | | | | |
|
|
* +---+---+-^-+--^-+-----+-----+--^--+--^--+-----+-----+--^--+--^--+-----+-----+--^--+--^--+
|
|
* | | | | | | | |
|
|
* | +----------------|-----+-----------------|-----+-----------------|-----+
|
|
* | ECC Area|(Main + Spare) - filled|by ESMT NAND HW |
|
|
* | | | |
|
|
* +---------------------+-----------------------+-----------------------+
|
|
* OOB ECC protected Area - not used due to
|
|
* partial programming from some filesystems
|
|
* (like JFFS2 with cleanmarkers)
|
|
*/
|
|
|
|
#define ESMT_OOB_SECTION_COUNT 4
|
|
#define ESMT_OOB_SECTION_SIZE(nand) \
|
|
(nanddev_per_page_oobsize(nand) / ESMT_OOB_SECTION_COUNT)
|
|
#define ESMT_OOB_FREE_SIZE(nand) \
|
|
(ESMT_OOB_SECTION_SIZE(nand) / 2)
|
|
#define ESMT_OOB_ECC_SIZE(nand) \
|
|
(ESMT_OOB_SECTION_SIZE(nand) - ESMT_OOB_FREE_SIZE(nand))
|
|
#define ESMT_OOB_BBM_SIZE 2
|
|
|
|
static int f50l1g41lb_ooblayout_ecc(struct mtd_info *mtd, int section,
|
|
struct mtd_oob_region *region)
|
|
{
|
|
struct nand_device *nand = mtd_to_nanddev(mtd);
|
|
|
|
if (section >= ESMT_OOB_SECTION_COUNT)
|
|
return -ERANGE;
|
|
|
|
region->offset = section * ESMT_OOB_SECTION_SIZE(nand) +
|
|
ESMT_OOB_FREE_SIZE(nand);
|
|
region->length = ESMT_OOB_ECC_SIZE(nand);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int f50l1g41lb_ooblayout_free(struct mtd_info *mtd, int section,
|
|
struct mtd_oob_region *region)
|
|
{
|
|
struct nand_device *nand = mtd_to_nanddev(mtd);
|
|
|
|
if (section >= ESMT_OOB_SECTION_COUNT)
|
|
return -ERANGE;
|
|
|
|
/*
|
|
* Reserve space for bad blocks markers (section0) and
|
|
* reserved bytes (sections 1-3)
|
|
*/
|
|
region->offset = section * ESMT_OOB_SECTION_SIZE(nand) + 2;
|
|
|
|
/* Use only 2 non-protected ECC bytes per each OOB section */
|
|
region->length = 2;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct mtd_ooblayout_ops f50l1g41lb_ooblayout = {
|
|
.ecc = f50l1g41lb_ooblayout_ecc,
|
|
.free = f50l1g41lb_ooblayout_free,
|
|
};
|
|
|
|
static const struct spinand_info esmt_c8_spinand_table[] = {
|
|
SPINAND_INFO("F50L1G41LB",
|
|
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x01, 0x7f,
|
|
0x7f, 0x7f),
|
|
NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
|
|
NAND_ECCREQ(1, 512),
|
|
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
|
|
&write_cache_variants,
|
|
&update_cache_variants),
|
|
0,
|
|
SPINAND_ECCINFO(&f50l1g41lb_ooblayout, NULL)),
|
|
SPINAND_INFO("F50D1G41LB",
|
|
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x11, 0x7f,
|
|
0x7f, 0x7f),
|
|
NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
|
|
NAND_ECCREQ(1, 512),
|
|
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
|
|
&write_cache_variants,
|
|
&update_cache_variants),
|
|
0,
|
|
SPINAND_ECCINFO(&f50l1g41lb_ooblayout, NULL)),
|
|
SPINAND_INFO("F50D2G41KA",
|
|
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x51, 0x7f,
|
|
0x7f, 0x7f),
|
|
NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1),
|
|
NAND_ECCREQ(8, 512),
|
|
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
|
|
&write_cache_variants,
|
|
&update_cache_variants),
|
|
0,
|
|
SPINAND_ECCINFO(&f50l1g41lb_ooblayout, NULL)),
|
|
};
|
|
|
|
static const struct spinand_manufacturer_ops esmt_spinand_manuf_ops = {
|
|
};
|
|
|
|
const struct spinand_manufacturer esmt_c8_spinand_manufacturer = {
|
|
.id = SPINAND_MFR_ESMT_C8,
|
|
.name = "ESMT",
|
|
.chips = esmt_c8_spinand_table,
|
|
.nchips = ARRAY_SIZE(esmt_c8_spinand_table),
|
|
.ops = &esmt_spinand_manuf_ops,
|
|
};
|