mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-19 21:58:04 +00:00
a5de91a88a
The correct oob layout is: ECC: region->offset = 48; region->length = 16; Free: /* Reserve 1 byte for the BBM. */ region->offset = 1; region->length = 47; Signed-off-by: Felix Matouschek <felix@matouschek.org>
179 lines
5.7 KiB
Diff
179 lines
5.7 KiB
Diff
From a07e31adf2753cad2fd9790db5bfc047c81e8152 Mon Sep 17 00:00:00 2001
|
|
From: Felix Matouschek <felix@matouschek.org>
|
|
Date: Fri, 2 Jul 2021 20:31:23 +0200
|
|
Subject: [PATCH] mtd: spinand: Add support for XTX XT26G0xA
|
|
|
|
Add support for XTX Technology XT26G01AXXXXX, XTX26G02AXXXXX and
|
|
XTX26G04AXXXXX SPI NAND.
|
|
|
|
These are 3V, 1G/2G/4Gbit serial SLC NAND flash devices with on-die ECC
|
|
(8bit strength per 512bytes).
|
|
|
|
Tested on Teltonika RUTX10 flashed with OpenWrt.
|
|
|
|
Datasheets available at
|
|
http://www.xtxtech.com/download/?AId=225
|
|
https://datasheet.lcsc.com/szlcsc/2005251034_XTX-XT26G01AWSEGA_C558841.pdf
|
|
|
|
Signed-off-by: Felix Matouschek <felix@matouschek.org>
|
|
---
|
|
drivers/mtd/nand/spi/Makefile | 2 +-
|
|
drivers/mtd/nand/spi/core.c | 1 +
|
|
drivers/mtd/nand/spi/xtx.c | 122 ++++++++++++++++++++++++++++++++++
|
|
include/linux/mtd/spinand.h | 1 +
|
|
4 files changed, 125 insertions(+), 1 deletion(-)
|
|
create mode 100644 drivers/mtd/nand/spi/xtx.c
|
|
|
|
--- a/drivers/mtd/nand/spi/Makefile
|
|
+++ b/drivers/mtd/nand/spi/Makefile
|
|
@@ -1,3 +1,3 @@
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
-spinand-objs := core.o gigadevice.o macronix.o micron.o paragon.o toshiba.o winbond.o
|
|
+spinand-objs := core.o gigadevice.o macronix.o micron.o paragon.o toshiba.o winbond.o xtx.o
|
|
obj-$(CONFIG_MTD_SPI_NAND) += spinand.o
|
|
--- a/drivers/mtd/nand/spi/core.c
|
|
+++ b/drivers/mtd/nand/spi/core.c
|
|
@@ -760,6 +760,7 @@ static const struct spinand_manufacturer
|
|
¶gon_spinand_manufacturer,
|
|
&toshiba_spinand_manufacturer,
|
|
&winbond_spinand_manufacturer,
|
|
+ &xtx_spinand_manufacturer,
|
|
};
|
|
|
|
static int spinand_manufacturer_match(struct spinand_device *spinand,
|
|
--- /dev/null
|
|
+++ b/drivers/mtd/nand/spi/xtx.c
|
|
@@ -0,0 +1,122 @@
|
|
+// SPDX-License-Identifier: GPL-2.0
|
|
+/*
|
|
+ * Author:
|
|
+ * Felix Matouschek <felix@matouschek.org>
|
|
+ */
|
|
+
|
|
+#include <linux/device.h>
|
|
+#include <linux/kernel.h>
|
|
+#include <linux/mtd/spinand.h>
|
|
+
|
|
+#define SPINAND_MFR_XTX 0x0B
|
|
+
|
|
+#define XT26G0XA_STATUS_ECC_MASK GENMASK(5, 2)
|
|
+#define XT26G0XA_STATUS_ECC_NO_DETECTED (0 << 2)
|
|
+#define XT26G0XA_STATUS_ECC_8_CORRECTED (3 << 4)
|
|
+#define XT26G0XA_STATUS_ECC_UNCOR_ERROR (2 << 4)
|
|
+
|
|
+static SPINAND_OP_VARIANTS(read_cache_variants,
|
|
+ SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 1, NULL, 0),
|
|
+ SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),
|
|
+ SPINAND_PAGE_READ_FROM_CACHE_DUALIO_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));
|
|
+
|
|
+static int xt26g0xa_ooblayout_ecc(struct mtd_info *mtd, int section,
|
|
+ struct mtd_oob_region *region)
|
|
+{
|
|
+ if (section)
|
|
+ return -ERANGE;
|
|
+
|
|
+ region->offset = 48;
|
|
+ region->length = 16;
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int xt26g0xa_ooblayout_free(struct mtd_info *mtd, int section,
|
|
+ struct mtd_oob_region *region)
|
|
+{
|
|
+ if (section)
|
|
+ return -ERANGE;
|
|
+
|
|
+ region->offset = 1;
|
|
+ region->length = 47;
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static const struct mtd_ooblayout_ops xt26g0xa_ooblayout = {
|
|
+ .ecc = xt26g0xa_ooblayout_ecc,
|
|
+ .free = xt26g0xa_ooblayout_free,
|
|
+};
|
|
+
|
|
+static int xt26g0xa_ecc_get_status(struct spinand_device *spinand,
|
|
+ u8 status)
|
|
+{
|
|
+ switch (status & XT26G0XA_STATUS_ECC_MASK) {
|
|
+ case XT26G0XA_STATUS_ECC_NO_DETECTED:
|
|
+ return 0;
|
|
+ case XT26G0XA_STATUS_ECC_8_CORRECTED:
|
|
+ return 8;
|
|
+ case XT26G0XA_STATUS_ECC_UNCOR_ERROR:
|
|
+ return -EBADMSG;
|
|
+ default: /* (1 << 2) through (7 << 2) are 1-7 corrected errors */
|
|
+ return (status & XT26G0XA_STATUS_ECC_MASK) >> 2;
|
|
+ }
|
|
+
|
|
+ return -EINVAL;
|
|
+}
|
|
+
|
|
+static const struct spinand_info xtx_spinand_table[] = {
|
|
+ SPINAND_INFO("XT26G01A",
|
|
+ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0xE1),
|
|
+ NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
|
|
+ NAND_ECCREQ(8, 512),
|
|
+ SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
|
|
+ &write_cache_variants,
|
|
+ &update_cache_variants),
|
|
+ SPINAND_HAS_QE_BIT,
|
|
+ SPINAND_ECCINFO(&xt26g0xa_ooblayout,
|
|
+ xt26g0xa_ecc_get_status)),
|
|
+ SPINAND_INFO("XT26G02A",
|
|
+ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0xE2),
|
|
+ NAND_MEMORG(1, 2048, 64, 64, 2048, 40, 1, 1, 1),
|
|
+ NAND_ECCREQ(8, 512),
|
|
+ SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
|
|
+ &write_cache_variants,
|
|
+ &update_cache_variants),
|
|
+ SPINAND_HAS_QE_BIT,
|
|
+ SPINAND_ECCINFO(&xt26g0xa_ooblayout,
|
|
+ xt26g0xa_ecc_get_status)),
|
|
+ SPINAND_INFO("XT26G04A",
|
|
+ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0xE3),
|
|
+ NAND_MEMORG(1, 2048, 64, 128, 2048, 40, 1, 1, 1),
|
|
+ NAND_ECCREQ(8, 512),
|
|
+ SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
|
|
+ &write_cache_variants,
|
|
+ &update_cache_variants),
|
|
+ SPINAND_HAS_QE_BIT,
|
|
+ SPINAND_ECCINFO(&xt26g0xa_ooblayout,
|
|
+ xt26g0xa_ecc_get_status)),
|
|
+};
|
|
+
|
|
+static const struct spinand_manufacturer_ops xtx_spinand_manuf_ops = {
|
|
+};
|
|
+
|
|
+const struct spinand_manufacturer xtx_spinand_manufacturer = {
|
|
+ .id = SPINAND_MFR_XTX,
|
|
+ .name = "XTX",
|
|
+ .chips = xtx_spinand_table,
|
|
+ .nchips = ARRAY_SIZE(xtx_spinand_table),
|
|
+ .ops = &xtx_spinand_manuf_ops,
|
|
+};
|
|
--- a/include/linux/mtd/spinand.h
|
|
+++ b/include/linux/mtd/spinand.h
|
|
@@ -244,6 +244,7 @@ extern const struct spinand_manufacturer
|
|
extern const struct spinand_manufacturer paragon_spinand_manufacturer;
|
|
extern const struct spinand_manufacturer toshiba_spinand_manufacturer;
|
|
extern const struct spinand_manufacturer winbond_spinand_manufacturer;
|
|
+extern const struct spinand_manufacturer xtx_spinand_manufacturer;
|
|
|
|
/**
|
|
* struct spinand_op_variants - SPI NAND operation variants
|