[Mod] Pstore测试正常

[详细说明]
    1.使用dts方式，Pstore工作正常；模块加载方式未通过(dts中未声明reserver-memory)；
    2.resever-memory定义：DRAM 末尾3MB位置开始,大小1MB(RTOS区域紧跟其后)：{0x9fd0_0000, 0x9fdf_ffff};

build/boards/cv181x/cv1813h_milkv_duos_sd/linux/cvitek_cv1813h_milkv_duos_sd_defconfig

@@ -530,3 +530,13 @@ CONFIG_BT_HCIUART_H4=y
 # CONFIG_BT_HCIVHCI is not set
 # CONFIG_BT_MRVL is not set
 # CONFIG_BT_MTKSDIO is not set
+
+CONFIG_MAGIC_SYSRQ=y
+
+CONFIG_PSTORE=y
+CONFIG_PSTORE_CONSOLE=y
+CONFIG_PSTORE_RAM=y
+CONFIG_PSTORE_PMSG=y
+
+#CONFIG_FUNCTION_TRACER=y
+#CONFIG_PSTORE_FTRACE=y

build/boards/default/dts/cv181x/cv181x_default_memmap.dtsi

@@ -21,5 +21,12 @@
 			compatible = "ion-region";
 			size = <0x0 CVIMMAP_ION_SIZE>;
 		};
+
+		ramoops@9fd00000 {
+			compatible = "ramoops";
+			reg = <0 0x9fd00000 0 0x100000>;
+			record-size = <0x4000>;
+			console-size = <0x4000>;
+		};
 	};
 };

osdrv/Makefile

@@ -49,6 +49,9 @@ ifeq (, ${CONFIG_NO_TP})
 	OTHERS += cp_ext_tp
 endif
 
+KO_LIST += testing
+OTHERS  += cp_testing
+
 $(info ** [ KO_LIST ] ** = $(KO_LIST))
 
 export CROSS_COMPILE=$(patsubst "%",%,$(CONFIG_CROSS_COMPILE_KERNEL))
@@ -69,12 +72,18 @@ wireless:
 wiegand-gpio:
 	@$(call MAKE_EXT_KO, extdrv/${@})
 
+testing:
+	@$(call MAKE_EXT_KO, extdrv/${@})
+
 cp_ext_wireless:
 	@find extdrv/wireless -name '*.ko' -print -exec cp {} $(INSTALL_DIR)/3rd/ \;
 
 cp_ext_tp:
 	@find extdrv/tp -name '*.ko' -print -exec cp {} $(INSTALL_DIR)/3rd/ \;
 
+cp_testing:
+	@find extdrv/testing -name '*.ko' -print -exec cp {} $(INSTALL_DIR)/3rd/ \;
+
 clean:
 	@for subdir in $(SUBDIRS); do cd $$subdir && $(MAKE) clean && cd $(CUR_DIR); done
 	@rm -f  $(INSTALL_DIR)/*.ko

osdrv/extdrv/testing/Makefile

@@ -0,0 +1,24 @@
+#
+# Makefile for the Linux testings.
+#
+
+obj-m += oops.o
+
+all:
+	$(MAKE) ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) -C $(KERNEL_DIR) M=$(shell pwd) modules
+
+strip:
+	$(CROSS_COMPILE)strip $(MODULE_NAME).ko --strip-unneeded
+
+clean:
+	find . -name *.d -delete
+	find . -name *.ko | xargs -i rm -rf {}
+	find . -name Module.symvers | xargs -i rm -rf {}
+	find . -name Module.markers | xargs -i rm -rf {}
+	find . -name modules.order | xargs -i rm -rf {}
+	find . -name *.mod.c | xargs -i rm -rf {}
+	find . -name *.mod | xargs -i rm -rf {}
+	find . -name *.o | xargs -i rm -rf {}
+	find . -name *.cmd | xargs -i rm -rf {}
+	find . -name *~ | xargs -i rm -rf {}
+	rm -fr .tmp_versions

osdrv/extdrv/testing/oops.c

@@ -0,0 +1,20 @@
+#include <linux/init.h>
+#include <linux/module.h>
+
+static int __init trigger_oops_init(void) {
+    int *ptr = (int *)0;               // 强制类型转换0地址为指针并尝试读取
+
+    printk(KERN_ALERT "Oops will trigger now!\n");
+    printk(KERN_ALERT "Dereferenced NULL pointer value: %d\n", *ptr);
+
+    return 0;           // 加载模块不应该有返回值，但这里返回0避免编译警告。
+}
+
+static void __exit trigger_oops_exit(void) {
+    printk(KERN_ALERT "Oops trigger module exiting\n");
+}
+
+module_init(trigger_oops_init);
+module_exit(trigger_oops_exit);
+
+MODULE_LICENSE("Dual BSD/GPL");