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uboot-mediatek: add support for FudanMicro FM25S01A

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This patch adds support for FudanMicro FM25S01A SPI NAND. It's required
for some CMCC RAX3000Me hardware revisions.

The patch was partially taken from ImmortalWrt.
Link:
https://raw.githubusercontent.com/immortalwrt/immortalwrt/refs/heads/master/package/boot/uboot-mediatek/patches/342-mtd-spinand-Support-fmsh.patch

Signed-off-by: Mikhail Zhilkin <csharper2005@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/19760
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This commit is contained in:
Mikhail Zhilkin 2025-08-14 19:15:09 +03:00 • committed by Hauke Mehrtens
parent 863a594d18
commit ee2fae27bc
1 changed files with 76 additions and 0 deletions
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76
package/boot/uboot-mediatek/patches/110-mtd-spi-nand-add-support-for-FudanMicro-FM25S01A.patch Normal file
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@ -0,0 +1,76 @@
From c5b3dd3b860b7eb65950c077a70b2e5ad68626b0 Mon Sep 17 00:00:00 2001
From: Mikhail Zhilkin <csharper2005@gmail.com>
Date: Wed, 13 Aug 2025 21:54:49 +0300
Subject: uboot-mediatek: add support for FudanMicro FM25S01A
This patch adds support for FudanMicro FM25S01A SPI NAND. It's required
for some CMCC RAX3000Me hardware revisions.
The patch was partially taken from ImmortalWrt.
Link:
https://raw.githubusercontent.com/immortalwrt/immortalwrt/refs/heads/master/package/boot/uboot-mediatek/patches/342-mtd-spinand-Support-fmsh.patch
Signed-off-by: Mikhail Zhilkin <csharper2005@gmail.com>
---
--- a/drivers/mtd/nand/spi/fudanmicro.c
+++ b/drivers/mtd/nand/spi/fudanmicro.c
@@ -27,6 +27,29 @@ static SPINAND_OP_VARIANTS(update_cache_
SPINAND_PROG_LOAD_X4(false, 0, NULL, 0),
SPINAND_PROG_LOAD(false, 0, NULL, 0));
+static int fm25s01a_ooblayout_ecc(struct mtd_info *mtd, int section,
+ struct mtd_oob_region *region)
+{
+ return -ERANGE;
+}
+
+static int fm25s01a_ooblayout_free(struct mtd_info *mtd, int section,
+ struct mtd_oob_region *region)
+{
+ if (section)
+ return -ERANGE;
+
+ region->offset = 2;
+ region->length = 62;
+
+ return 0;
+}
+
+static const struct mtd_ooblayout_ops fm25s01a_ooblayout = {
+ .ecc = fm25s01a_ooblayout_ecc,
+ .rfree = fm25s01a_ooblayout_free,
+};
+
static int fm25s01b_ooblayout_ecc(struct mtd_info *mtd, int section,
struct mtd_oob_region *region)
{
@@ -83,8 +106,17 @@ static int fm25s01b_ecc_get_status(struc
}
static const struct spinand_info fudan_spinand_table[] = {
- SPINAND_INFO("FM25s01B",
- SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xD4),
+ SPINAND_INFO("FM25S01A",
+ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xE4),
+ 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(&fm25s01a_ooblayout, NULL)),
+ SPINAND_INFO("FM25S01B",
+ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xD4),
NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1),
NAND_ECCREQ(8, 512),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
@@ -100,7 +132,7 @@ static const struct spinand_manufacturer
const struct spinand_manufacturer fudan_spinand_manufacturer = {
.id = SPINAND_MFR_FUDAN,
- .name = "FUDAN Micron",
+ .name = "FudanMicro",
.chips = fudan_spinand_table,
.nchips = ARRAY_SIZE(fudan_spinand_table),
.ops = &fudan_spinand_manuf_ops,