[][OpenWrt Dev][Add kernel cmdline boot parameter support]
[Description]
Add support for kernel to accept boot parameters from cmdline.
[Release-log]
N/A
Change-Id: I86a56ef286033d490fcb7985a9768427dfe24a7b
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/5597601
diff --git a/target/linux/generic/hack-5.4/930-cmdline-boot-parameters.patch b/target/linux/generic/hack-5.4/930-cmdline-boot-parameters.patch
new file mode 100644
index 0000000..d99fcd8
--- /dev/null
+++ b/target/linux/generic/hack-5.4/930-cmdline-boot-parameters.patch
@@ -0,0 +1,55 @@
+--- a/kernel/Makefile
++++ b/kernel/Makefile
+@@ -12,6 +12,8 @@ obj-y = fork.o exec_domain.o panic.o
+ notifier.o ksysfs.o cred.o reboot.o \
+ async.o range.o smpboot.o ucount.o
+
++obj-y += boot_param.o
++
+ obj-$(CONFIG_MODULES) += kmod.o
+ obj-$(CONFIG_MULTIUSER) += groups.o
+
+--- a/kernel/boot_param.c
++++ b/kernel/boot_param.c
+@@ -0,0 +1,41 @@
++/* SPDX-License-Identifier: BSD-3-Clause */
++/*
++* Copyright (C) 2022 MediaTek Inc. All rights reserved.
++ *
++ * Author: Weijie Gao <weijie.gao@mediatek.com>
++ */
++
++#include <linux/kernel.h>
++#include <linux/moduleparam.h>
++
++#define BOOT_PARAM_STR_MAX_LEN 256
++
++static bool dual_boot;
++module_param(dual_boot, bool, 0444);
++
++static bool no_split_rootfs_data;
++module_param(no_split_rootfs_data, bool, 0444);
++
++static uint boot_image_slot;
++module_param(boot_image_slot, uint, 0444);
++
++static uint upgrade_image_slot;
++module_param(upgrade_image_slot, uint, 0444);
++
++static char rootfs_data_part[BOOT_PARAM_STR_MAX_LEN];
++module_param_string(rootfs_data_part, rootfs_data_part, BOOT_PARAM_STR_MAX_LEN, 0644);
++
++static char boot_kernel_part[BOOT_PARAM_STR_MAX_LEN];
++module_param_string(boot_kernel_part, boot_kernel_part, BOOT_PARAM_STR_MAX_LEN, 0444);
++
++static char boot_rootfs_part[BOOT_PARAM_STR_MAX_LEN];
++module_param_string(boot_rootfs_part, boot_rootfs_part, BOOT_PARAM_STR_MAX_LEN, 0444);
++
++static char upgrade_kernel_part[BOOT_PARAM_STR_MAX_LEN];
++module_param_string(upgrade_kernel_part, upgrade_kernel_part, BOOT_PARAM_STR_MAX_LEN, 0444);
++
++static char upgrade_rootfs_part[BOOT_PARAM_STR_MAX_LEN];
++module_param_string(upgrade_rootfs_part, upgrade_rootfs_part, BOOT_PARAM_STR_MAX_LEN, 0444);
++
++static char env_part[BOOT_PARAM_STR_MAX_LEN];
++module_param_string(env_part, env_part, BOOT_PARAM_STR_MAX_LEN, 0444);