mirror of
https://github.com/openwrt/openwrt.git
synced 2026-10-14 17:28:28 +04:00
kernel: add support for FudanMicro FM25G01B and FM25G02B spi-nand
This commit adds support for FudanMicro FM25G01B and FM25G02B SPI NAND chips. This is required to: 1. Fix bootloop on new revision of Keenetic KN-1812 and Netcraze NC-1812 (with FudanMicro FM25G02B SPI NAND) 2. Add Nokia XG-040G-MD support (device has either SkyHigh or FudanMicro SPI NAND). Fixes: https://github.com/openwrt/openwrt/issues/23855 Signed-off-by: Mikhail Zhilkin <csharper2005@gmail.com> Link: https://github.com/openwrt/openwrt/pull/23864 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This commit is contained in:
Mikhail Zhilkin authored and 
Hauke Mehrtens committed
1 parent
a1ab701efa
commit
7edb29d241
1 file changed
+152
+152
@@ -0,0 +1,152 @@
|
|||||||
|
From: Ziyang Huang <hzyitc@outlook.com>
|
||||||
|
To: miquel.raynal@bootlin.com
|
||||||
|
Subject: [PATCH v3] mtd: spinand: fmsh: add support for FM25G{01,02}B
|
||||||
|
Date: Sun, 31 May 2026 21:05:17 +0800
|
||||||
|
|
||||||
|
Add support for FudanMicro FM25G01B SPI NAND and FudanMicro FM25G02B SPI
|
||||||
|
NAND.
|
||||||
|
|
||||||
|
FM25G01B datasheet: https://www.fmsh.com/nvm/FM25G01B_ds_eng.pdf
|
||||||
|
FM25G02B datasheet: https://www.fmsh.com/nvm/FM25G02B_ds_eng.pdf
|
||||||
|
|
||||||
|
Signed-off-by: Ziyang Huang <hzyitc@outlook.com>
|
||||||
|
Link: https://lore.kernel.org/all/SEYPR01MB58821E380C5DD8F7B3FFDA23C9142@SEYPR01MB5882.apcprd01.prod.exchangelabs.com/
|
||||||
|
[Fix chip names in the commit message, mask macro in the switch operator]
|
||||||
|
Signed-off-by: Mikhail Zhilkin <csharper2005@gmail.com>
|
||||||
|
---
|
||||||
|
Changes since v2:
|
||||||
|
More verbose commit message.
|
||||||
|
Use only one section in fm25g01b_ooblayout_free().
|
||||||
|
|
||||||
|
Changes since v1:
|
||||||
|
Fix copy-paste issue. (Correct FM25G01B size.)
|
||||||
|
|
||||||
|
drivers/mtd/nand/spi/fmsh.c | 96 +++++++++++++++++++++++++++++++++++++
|
||||||
|
1 file changed, 96 insertions(+)
|
||||||
|
|
||||||
|
--- a/drivers/mtd/nand/spi/fmsh.c
|
||||||
|
+++ b/drivers/mtd/nand/spi/fmsh.c
|
||||||
|
@@ -9,6 +9,16 @@
|
||||||
|
#include <linux/kernel.h>
|
||||||
|
#include <linux/mtd/spinand.h>
|
||||||
|
|
||||||
|
+#define FM25G01B_STATUS_ECC_MASK (7 << 4)
|
||||||
|
+ #define FM25G01B_STATUS_ECC_NO_BITFLIPS (0 << 4)
|
||||||
|
+ #define FM25G01B_STATUS_ECC_1_3_BITFLIPS (1 << 4)
|
||||||
|
+ #define FM25G01B_STATUS_ECC_4_BITFLIPS (2 << 4)
|
||||||
|
+ #define FM25G01B_STATUS_ECC_5_BITFLIPS (3 << 4)
|
||||||
|
+ #define FM25G01B_STATUS_ECC_6_BITFLIPS (4 << 4)
|
||||||
|
+ #define FM25G01B_STATUS_ECC_7_BITFLIPS (5 << 4)
|
||||||
|
+ #define FM25G01B_STATUS_ECC_8_BITFLIPS (6 << 4)
|
||||||
|
+ #define FM25G01B_STATUS_ECC_UNCOR_ERROR (7 << 4)
|
||||||
|
+
|
||||||
|
#define FM25S01BI3_STATUS_ECC_MASK (7 << 4)
|
||||||
|
#define FM25S01BI3_STATUS_ECC_NO_BITFLIPS (0 << 4)
|
||||||
|
#define FM25S01BI3_STATUS_ECC_1_3_BITFLIPS (1 << 4)
|
||||||
|
@@ -34,6 +44,67 @@ static SPINAND_OP_VARIANTS(update_cache_
|
||||||
|
SPINAND_PROG_LOAD_1S_1S_4S_OP(false, 0, NULL, 0),
|
||||||
|
SPINAND_PROG_LOAD_1S_1S_1S_OP(false, 0, NULL, 0));
|
||||||
|
|
||||||
|
+
|
||||||
|
+static int fm25g01b_ooblayout_ecc(struct mtd_info *mtd, int section,
|
||||||
|
+ struct mtd_oob_region *region)
|
||||||
|
+{
|
||||||
|
+ if (section)
|
||||||
|
+ return -ERANGE;
|
||||||
|
+
|
||||||
|
+ region->offset = 64;
|
||||||
|
+ region->length = 64;
|
||||||
|
+
|
||||||
|
+ return 0;
|
||||||
|
+}
|
||||||
|
+
|
||||||
|
+static int fm25g01b_ooblayout_free(struct mtd_info *mtd, int section,
|
||||||
|
+ struct mtd_oob_region *region)
|
||||||
|
+{
|
||||||
|
+ if (section)
|
||||||
|
+ return -ERANGE;
|
||||||
|
+
|
||||||
|
+ /* reserve 2 bytes for the BBM */
|
||||||
|
+ region->offset = 2;
|
||||||
|
+ region->length = 62;
|
||||||
|
+
|
||||||
|
+ return 0;
|
||||||
|
+}
|
||||||
|
+
|
||||||
|
+static int fm25g01b_ecc_get_status(struct spinand_device *spinand,
|
||||||
|
+ u8 status)
|
||||||
|
+{
|
||||||
|
+ switch (status & FM25G01B_STATUS_ECC_MASK) {
|
||||||
|
+ case FM25G01B_STATUS_ECC_NO_BITFLIPS:
|
||||||
|
+ return 0;
|
||||||
|
+
|
||||||
|
+ case FM25G01B_STATUS_ECC_1_3_BITFLIPS:
|
||||||
|
+ return 3;
|
||||||
|
+
|
||||||
|
+ case FM25G01B_STATUS_ECC_4_BITFLIPS:
|
||||||
|
+ return 4;
|
||||||
|
+
|
||||||
|
+ case FM25G01B_STATUS_ECC_5_BITFLIPS:
|
||||||
|
+ return 5;
|
||||||
|
+
|
||||||
|
+ case FM25G01B_STATUS_ECC_6_BITFLIPS:
|
||||||
|
+ return 6;
|
||||||
|
+
|
||||||
|
+ case FM25G01B_STATUS_ECC_7_BITFLIPS:
|
||||||
|
+ return 7;
|
||||||
|
+
|
||||||
|
+ case FM25G01B_STATUS_ECC_8_BITFLIPS:
|
||||||
|
+ return 8;
|
||||||
|
+
|
||||||
|
+ case FM25G01B_STATUS_ECC_UNCOR_ERROR:
|
||||||
|
+ return -EBADMSG;
|
||||||
|
+
|
||||||
|
+ default:
|
||||||
|
+ break;
|
||||||
|
+ }
|
||||||
|
+
|
||||||
|
+ return -EINVAL;
|
||||||
|
+}
|
||||||
|
+
|
||||||
|
static int fm25s01a_ooblayout_ecc(struct mtd_info *mtd, int section,
|
||||||
|
struct mtd_oob_region *region)
|
||||||
|
{
|
||||||
|
@@ -102,6 +173,11 @@ static int fm25s01bi3_ooblayout_free(str
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
+static const struct mtd_ooblayout_ops fm25g01b_ooblayout = {
|
||||||
|
+ .ecc = fm25g01b_ooblayout_ecc,
|
||||||
|
+ .free = fm25g01b_ooblayout_free,
|
||||||
|
+};
|
||||||
|
+
|
||||||
|
static const struct mtd_ooblayout_ops fm25s01a_ooblayout = {
|
||||||
|
.ecc = fm25s01a_ooblayout_ecc,
|
||||||
|
.free = fm25s01a_ooblayout_free,
|
||||||
|
@@ -113,6 +189,26 @@ static const struct mtd_ooblayout_ops fm
|
||||||
|
};
|
||||||
|
|
||||||
|
static const struct spinand_info fmsh_spinand_table[] = {
|
||||||
|
+ SPINAND_INFO("FM25G01B",
|
||||||
|
+ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xd1),
|
||||||
|
+ NAND_MEMORG(1, 2048, 128, 64, 1024, 21, 1, 1, 1),
|
||||||
|
+ NAND_ECCREQ(8, 528),
|
||||||
|
+ SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
|
||||||
|
+ &write_cache_variants,
|
||||||
|
+ &update_cache_variants),
|
||||||
|
+ SPINAND_HAS_QE_BIT,
|
||||||
|
+ SPINAND_ECCINFO(&fm25g01b_ooblayout,
|
||||||
|
+ fm25g01b_ecc_get_status)),
|
||||||
|
+ SPINAND_INFO("FM25G02B",
|
||||||
|
+ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xd2),
|
||||||
|
+ NAND_MEMORG(1, 2048, 128, 64, 2048, 41, 1, 1, 1),
|
||||||
|
+ NAND_ECCREQ(8, 528),
|
||||||
|
+ SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
|
||||||
|
+ &write_cache_variants,
|
||||||
|
+ &update_cache_variants),
|
||||||
|
+ SPINAND_HAS_QE_BIT,
|
||||||
|
+ SPINAND_ECCINFO(&fm25g01b_ooblayout,
|
||||||
|
+ fm25g01b_ecc_get_status)),
|
||||||
|
SPINAND_INFO("FM25S01A",
|
||||||
|
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xE4),
|
||||||
|
NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
|
||||||
Reference in new issue
Block a user