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difos/package/boot/uboot-mediatek/patches/100-11-env-add-support-for-NMBM-upper-MTD-layer.patch
Shiji Yang 332645a610 uboot-mediatek: sync with mtk-openwrt/u-boot 20250711 
- Backport upstream Winbond W25N04KV Flash support.
- Backport upstream GigaDevice series Flash support.
- Backport pending Airoha AN8855 switch TPID value fix.
- Backport Mediatek UART baudrate accuracy compensation support.
- Pull mtk patchset from MTK SDK mtksoc-20250711 branch:
    Remove mt7622_rfb changes. The MTK SDK already dropped them.
    Replace Airoha ethernet PHY driver with new version.
    Split downstream snfi changes into independent patches.
    Add new Marvell CUX3410 PHY driver.
    Add new MediaTek built-in 2.5Gbps PHY driver.

Signed-off-by: Shiji Yang <yangshiji66@outlook.com>
2025-07-19 02:59:16 +01:00

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From 240d98e6ad0aed3c11236aa40a60bbd6fe01fae5 Mon Sep 17 00:00:00 2001
From: Weijie Gao <weijie.gao@mediatek.com>
Date: Mon, 25 Jul 2022 10:50:46 +0800
Subject: [PATCH 11/30] env: add support for NMBM upper MTD layer
Add an env driver for NMBM upper MTD layer
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
---
env/Kconfig | 19 ++++-
env/Makefile | 1 +
env/env.c | 3 +
env/nmbm.c | 155 +++++++++++++++++++++++++++++++++++++++++
include/env_internal.h | 1 +
tools/Makefile | 1 +
6 files changed, 178 insertions(+), 2 deletions(-)
create mode 100644 env/nmbm.c
--- a/env/Kconfig
+++ b/env/Kconfig
@@ -74,7 +74,7 @@ config ENV_IS_DEFAULT
!ENV_IS_IN_MMC && !ENV_IS_IN_NAND && \
!ENV_IS_IN_NVRAM && !ENV_IS_IN_ONENAND && \
!ENV_IS_IN_REMOTE && !ENV_IS_IN_SPI_FLASH && \
- !ENV_IS_IN_UBI && !ENV_IS_IN_MTD
+ !ENV_IS_IN_UBI && !ENV_IS_IN_NMBM && !ENV_IS_IN_MTD
select ENV_IS_NOWHERE
config ENV_IS_NOWHERE
@@ -297,6 +297,21 @@ config ENV_IS_IN_NAND
Currently, CONFIG_ENV_OFFSET_REDUND is not supported when
using CONFIG_ENV_OFFSET_OOB.
+config ENV_IS_IN_NMBM
+ bool "Environment in a NMBM upper MTD layer"
+ depends on !CHAIN_OF_TRUST
+ depends on NMBM_MTD
+ help
+ Define this if you have a NMBM upper MTD which you want to use for
+ the environment.
+
+ - CONFIG_ENV_OFFSET:
+ - CONFIG_ENV_SIZE:
+
+ These two #defines specify the offset and size of the environment
+ area within the first NAND device. CONFIG_ENV_OFFSET must be
+ aligned to an erase block boundary.
+
config ENV_RANGE
hex "Length of the region in which the environment can be written"
depends on ENV_IS_IN_NAND
@@ -596,7 +611,7 @@ config ENV_ADDR_REDUND
config ENV_OFFSET
hex "Environment offset"
depends on ENV_IS_IN_EEPROM || ENV_IS_IN_MMC || ENV_IS_IN_NAND || \
- ENV_IS_IN_SPI_FLASH || ENV_IS_IN_MTD
+ ENV_IS_IN_SPI_FLASH || ENV_IS_IN_NMBM || ENV_IS_IN_MTD
default 0x3f8000 if ARCH_ROCKCHIP && ENV_IS_IN_MMC
default 0x140000 if ARCH_ROCKCHIP && ENV_IS_IN_SPI_FLASH
default 0xF0000 if ARCH_SUNXI
--- a/env/Makefile
+++ b/env/Makefile
@@ -25,6 +25,7 @@ obj-$(CONFIG_$(PHASE_)ENV_IS_IN_MMC) +=
obj-$(CONFIG_$(PHASE_)ENV_IS_IN_FAT) += fat.o
obj-$(CONFIG_$(PHASE_)ENV_IS_IN_EXT4) += ext4.o
obj-$(CONFIG_$(PHASE_)ENV_IS_IN_NAND) += nand.o
+obj-$(CONFIG_$(PHASE_)ENV_IS_IN_NMBM) += nmbm.o
obj-$(CONFIG_$(PHASE_)ENV_IS_IN_SPI_FLASH) += sf.o
obj-$(CONFIG_$(PHASE_)ENV_IS_IN_MTD) += mtd.o
obj-$(CONFIG_$(PHASE_)ENV_IS_IN_FLASH) += flash.o
--- a/env/env.c
+++ b/env/env.c
@@ -49,6 +49,9 @@ static enum env_location env_locations[]
#ifdef CONFIG_ENV_IS_IN_NAND
ENVL_NAND,
#endif
+#ifdef CONFIG_ENV_IS_IN_NMBM
+ ENVL_NMBM,
+#endif
#ifdef CONFIG_ENV_IS_IN_NVRAM
ENVL_NVRAM,
#endif
--- /dev/null
+++ b/env/nmbm.c
@@ -0,0 +1,155 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2020 MediaTek Inc. All Rights Reserved.
+ *
+ * Author: Weijie Gao <weijie.gao@mediatek.com>
+ */
+
+#include <command.h>
+#include <env.h>
+#include <env_internal.h>
+#include <errno.h>
+#include <linux/kernel.h>
+#include <linux/stddef.h>
+#include <linux/types.h>
+#include <malloc.h>
+#include <memalign.h>
+#include <search.h>
+
+#include <nmbm/nmbm-mtd.h>
+
+#if defined(CONFIG_CMD_SAVEENV) && defined(CONFIG_NMBM_MTD)
+#define CMD_SAVEENV
+#endif
+
+#if defined(ENV_IS_EMBEDDED)
+env_t *env_ptr = &environment;
+#else /* ! ENV_IS_EMBEDDED */
+env_t *env_ptr;
+#endif /* ENV_IS_EMBEDDED */
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static int env_nmbm_init(void)
+{
+#if defined(ENV_IS_EMBEDDED)
+ int crc1_ok = 0, crc2_ok = 0;
+ env_t *tmp_env1;
+
+ tmp_env1 = env_ptr;
+ crc1_ok = crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc;
+
+ if (!crc1_ok && !crc2_ok) {
+ gd->env_addr = 0;
+ gd->env_valid = ENV_INVALID;
+
+ return 0;
+ } else if (crc1_ok && !crc2_ok) {
+ gd->env_valid = ENV_VALID;
+ }
+
+ if (gd->env_valid == ENV_VALID)
+ env_ptr = tmp_env1;
+
+ gd->env_addr = (ulong)env_ptr->data;
+
+#else /* ENV_IS_EMBEDDED */
+ gd->env_addr = (ulong)&default_environment[0];
+ gd->env_valid = ENV_VALID;
+#endif /* ENV_IS_EMBEDDED */
+
+ return 0;
+}
+
+#ifdef CMD_SAVEENV
+static int env_nmbm_save(void)
+{
+ ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
+ struct mtd_info *mtd;
+ struct erase_info ei;
+ int ret = 0;
+
+ ret = env_export(env_new);
+ if (ret)
+ return ret;
+
+ mtd = nmbm_mtd_get_upper_by_index(0);
+ if (!mtd)
+ return 1;
+
+ printf("Erasing on NMBM...\n");
+ memset(&ei, 0, sizeof(ei));
+
+ ei.mtd = mtd;
+ ei.addr = CONFIG_ENV_OFFSET;
+ ei.len = CONFIG_ENV_SIZE;
+
+ if (mtd_erase(mtd, &ei))
+ return 1;
+
+ printf("Writing on NMBM... ");
+ ret = mtd_write(mtd, CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE, NULL,
+ (u_char *)env_new);
+ puts(ret ? "FAILED!\n" : "OK\n");
+
+ return !!ret;
+}
+#endif /* CMD_SAVEENV */
+
+static int readenv(size_t offset, u_char *buf)
+{
+ struct mtd_info *mtd;
+ struct mtd_oob_ops ops;
+ int ret;
+ size_t len = CONFIG_ENV_SIZE;
+
+ mtd = nmbm_mtd_get_upper_by_index(0);
+ if (!mtd)
+ return 1;
+
+ ops.mode = MTD_OPS_AUTO_OOB;
+ ops.ooblen = 0;
+ while(len > 0) {
+ ops.datbuf = buf;
+ ops.len = min(len, (size_t)mtd->writesize);
+ ops.oobbuf = NULL;
+
+ ret = mtd_read_oob(mtd, offset, &ops);
+ if (ret)
+ return 1;
+
+ buf += mtd->writesize;
+ len -= mtd->writesize;
+ offset += mtd->writesize;
+ }
+
+ return 0;
+}
+
+static int env_nmbm_load(void)
+{
+#if !defined(ENV_IS_EMBEDDED)
+ ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
+ int ret;
+
+ ret = readenv(CONFIG_ENV_OFFSET, (u_char *)buf);
+ if (ret) {
+ env_set_default("readenv() failed", 0);
+ return -EIO;
+ }
+
+ return env_import(buf, 1, H_EXTERNAL);
+#endif /* ! ENV_IS_EMBEDDED */
+
+ return 0;
+}
+
+U_BOOT_ENV_LOCATION(nmbm) = {
+ .location = ENVL_NMBM,
+ ENV_NAME("NMBM")
+ .load = env_nmbm_load,
+#if defined(CMD_SAVEENV)
+ .save = env_save_ptr(env_nmbm_save),
+#endif
+ .init = env_nmbm_init,
+};
--- a/include/env_internal.h
+++ b/include/env_internal.h
@@ -109,6 +109,7 @@ enum env_location {
ENVL_FLASH,
ENVL_MMC,
ENVL_NAND,
+ ENVL_NMBM,
ENVL_NVRAM,
ENVL_ONENAND,
ENVL_REMOTE,
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -38,6 +38,7 @@ ENVCRC-$(CONFIG_ENV_IS_IN_EEPROM) = y
ENVCRC-$(CONFIG_ENV_IS_IN_FLASH) = y
ENVCRC-$(CONFIG_ENV_IS_IN_ONENAND) = y
ENVCRC-$(CONFIG_ENV_IS_IN_NAND) = y
+ENVCRC-$(CONFIG_ENV_IS_IN_NMBM) = y
ENVCRC-$(CONFIG_ENV_IS_IN_NVRAM) = y
ENVCRC-$(CONFIG_ENV_IS_IN_SPI_FLASH) = y
BUILD_ENVCRC ?= $(ENVCRC-y)
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