diff --git a/Ubiquitous/XiZi_IIoT/arch/risc-v/shared/boot.h b/Ubiquitous/XiZi_IIoT/arch/risc-v/shared/boot.h
index 14f0a596c..4d3d1226f 100644
--- a/Ubiquitous/XiZi_IIoT/arch/risc-v/shared/boot.h
+++ b/Ubiquitous/XiZi_IIoT/arch/risc-v/shared/boot.h
@@ -49,100 +49,100 @@
 .macro ZERO_F_REGISTERS
   fssr x31
 
-  fmv.w.x f0, x31
+  fmv.d.x f0, x31
   FSubDS f0, f0, f0
 
-  fmv.w.x f1, x31
+  fmv.d.x f1, x31
   FSubDS f1, f1, f1
 
-  fmv.w.x f2, x31
+  fmv.d.x f2, x31
   FSubDS f2, f2, f2
 
-  fmv.w.x f3, x31
+  fmv.d.x f3, x31
   FSubDS f3, f3, f3
 
-  fmv.w.x f4, x31
+  fmv.d.x f4, x31
   FSubDS f4, f4, f4
 
-  fmv.w.x f5, x31
+  fmv.d.x f5, x31
   FSubDS f5, f5, f5
 
-  fmv.w.x f6, x31
+  fmv.d.x f6, x31
   FSubDS f6, f6, f6
 
-  fmv.w.x f7, x31
+  fmv.d.x f7, x31
   FSubDS f7, f7, f7
 
-  fmv.w.x f8, x31
+  fmv.d.x f8, x31
   FSubDS f8, f8, f8
 
-  fmv.w.x f9, x31
+  fmv.d.x f9, x31
   FSubDS f9, f9, f9
 
-  fmv.w.x f10, x31
+  fmv.d.x f10, x31
   FSubDS f10,f10,f10
 
-  fmv.w.x f11, x31
+  fmv.d.x f11, x31
   FSubDS f11,f11,f11
 
-  fmv.w.x f12, x31
+  fmv.d.x f12, x31
   FSubDS f12,f12,f12
 
-  fmv.w.x f13, x31
+  fmv.d.x f13, x31
   FSubDS f13,f13,f13
 
-  fmv.w.x f14, x31
+  fmv.d.x f14, x31
   FSubDS f14,f14,f14
 
-  fmv.w.x f15, x31
+  fmv.d.x f15, x31
   FSubDS f15,f15,f15
 
-  fmv.w.x f16, x31
+  fmv.d.x f16, x31
   FSubDS f16,f16,f16
 
-  fmv.w.x f17, x31
+  fmv.d.x f17, x31
   FSubDS f17,f17,f17
 
-  fmv.w.x f18, x31
+  fmv.d.x f18, x31
   FSubDS f18,f18,f18
 
-  fmv.w.x f19, x31
+  fmv.d.x f19, x31
   FSubDS f19,f19,f19
 
-  fmv.w.x f20, x31
+  fmv.d.x f20, x31
   FSubDS f20,f20,f20
 
-  fmv.w.x f21, x31
+  fmv.d.x f21, x31
   FSubDS f21,f21,f21
 
-  fmv.w.x f22, x31
+  fmv.d.x f22, x31
   FSubDS f22,f22,f22
 
-  fmv.w.x f23, x31
+  fmv.d.x f23, x31
   FSubDS f23,f23,f23
 
-  fmv.w.x f24, x31
+  fmv.d.x f24, x31
   FSubDS f24,f24,f24
 
-  fmv.w.x f25, x31
+  fmv.d.x f25, x31
   FSubDS f25,f25,f25
 
-  fmv.w.x f26, x31
+  fmv.d.x f26, x31
   FSubDS f26,f26,f26
 
-  fmv.w.x f27, x31
+  fmv.d.x f27, x31
   FSubDS f27,f27,f27
 
-  fmv.w.x f28, x31
+  fmv.d.x f28, x31
   FSubDS f28,f28,f28
 
-  fmv.w.x f29, x31
+  fmv.d.x f29, x31
   FSubDS f29,f29,f29
 
-  fmv.w.x f30, x31
+  fmv.d.x f30, x31
   FSubDS f30,f30,f30
 
-  fmv.w.x f31, x31
+  fmv.d.x f31, x31
   FSubDS f31,f31,f31
 .endm
 
diff --git a/Ubiquitous/XiZi_IIoT/arch/risc-v/shared/register_para.h b/Ubiquitous/XiZi_IIoT/arch/risc-v/shared/register_para.h
index 2bc71f2d6..05f53ce12 100644
--- a/Ubiquitous/XiZi_IIoT/arch/risc-v/shared/register_para.h
+++ b/Ubiquitous/XiZi_IIoT/arch/risc-v/shared/register_para.h
@@ -18,7 +18,7 @@
 #ifdef ARCH_CPU_64BIT
 #define StoreD                   sd
 #define LoadD                    ld
-#define FSubDS                   fsub.s
+#define FSubDS                   fsub.d
 #define RegLength                8
 #define StoreDS                  "sd"
 #define LoadDS                   "ld"
diff --git a/Ubiquitous/XiZi_IIoT/board/aiit-riscv64-board/config.mk b/Ubiquitous/XiZi_IIoT/board/aiit-riscv64-board/config.mk
index 5dd3c8db9..97b73716a 100644
--- a/Ubiquitous/XiZi_IIoT/board/aiit-riscv64-board/config.mk
+++ b/Ubiquitous/XiZi_IIoT/board/aiit-riscv64-board/config.mk
@@ -1,10 +1,10 @@
-export CFLAGS := -mcmodel=medany -march=rv64imafc -mabi=lp64f -fsingle-precision-constant -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -O0 -ggdb -fgnu89-inline -Werror
-export AFLAGS := -c -mcmodel=medany -march=rv64imafc -mabi=lp64f -fsingle-precision-constant -x assembler-with-cpp -ggdb
-export LFLAGS := -mcmodel=medany -march=rv64imafc -mabi=lp64f -fsingle-precision-constant -nostartfiles -Wl,--gc-sections,-Map=XiZi.map,-cref,-u,_start -T $(BSP_ROOT)/link.lds
+export CFLAGS := -mcmodel=medany -march=rv64imafdc -mabi=lp64d -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -O0 -ggdb -fgnu89-inline -Werror
+export AFLAGS := -c -mcmodel=medany -march=rv64imafdc -mabi=lp64d -x assembler-with-cpp -ggdb
+export LFLAGS := -mcmodel=medany -march=rv64imafdc -mabi=lp64d -nostartfiles -Wl,--gc-sections,-Map=XiZi.map,-cref,-u,_start -T $(BSP_ROOT)/link.lds
 
-export APPLFLAGS := -mcmodel=medany -march=rv64imafc -mabi=lp64f -fsingle-precision-constant -nostartfiles -Wl,--gc-sections,-Map=XiZi-app.map,-cref,-u, -T $(BSP_ROOT)/link_userspace.lds
+export APPLFLAGS := -mcmodel=medany -march=rv64imafdc -mabi=lp64d -nostartfiles -Wl,--gc-sections,-Map=XiZi-app.map,-cref,-u, -T $(BSP_ROOT)/link_userspace.lds
 
-export CXXFLAGS := -mcmodel=medany -march=rv64imafc -mabi=lp64f -fsingle-precision-constant -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -O0 -ggdb -Werror 
+export CXXFLAGS := -mcmodel=medany -march=rv64imafdc -mabi=lp64d -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -O0 -ggdb -Werror 
 
 export CROSS_COMPILE ?=/opt/gnu-mcu-eclipse/riscv-none-gcc/8.2.0-2.1-20190425-1021/bin/riscv-none-embed-
 #export CROSS_COMPILE ?=/opt/xpack-riscv-none-embed-gcc-10.1.0-1.1/bin/riscv-none-embed-
diff --git a/Ubiquitous/XiZi_IIoT/board/edu-riscv64/config.mk b/Ubiquitous/XiZi_IIoT/board/edu-riscv64/config.mk
index d006c6ab8..409cda39c 100644
--- a/Ubiquitous/XiZi_IIoT/board/edu-riscv64/config.mk
+++ b/Ubiquitous/XiZi_IIoT/board/edu-riscv64/config.mk
@@ -1,6 +1,6 @@
-export CFLAGS := -mcmodel=medany -march=rv64imafc -mabi=lp64f -fsingle-precision-constant -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -O0 -ggdb -fgnu89-inline -Werror
-export AFLAGS := -c -mcmodel=medany -march=rv64imafc -mabi=lp64f -fsingle-precision-constant -x assembler-with-cpp -ggdb
-export LFLAGS := -mcmodel=medany -march=rv64imafc -mabi=lp64f -fsingle-precision-constant -nostartfiles -Wl,--gc-sections,-Map=XiZi-edu-riscv64.map,-cref,-u,_start -T $(BSP_ROOT)/link.lds
+export CFLAGS := -mcmodel=medany -march=rv64imafdc -mabi=lp64d -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -O0 -ggdb -fgnu89-inline -Werror
+export AFLAGS := -c -mcmodel=medany -march=rv64imafdc -mabi=lp64d -x assembler-with-cpp -ggdb
+export LFLAGS := -mcmodel=medany -march=rv64imafdc -mabi=lp64d -nostartfiles -Wl,--gc-sections,-Map=XiZi-edu-riscv64.map,-cref,-u,_start -T $(BSP_ROOT)/link.lds
 
 ifeq ($(CONFIG_LIB_MUSLLIB), y)
 export LFLAGS += -nostdlib -nostdinc # -fno-builtin -nodefaultlibs
diff --git a/Ubiquitous/XiZi_IIoT/board/kd233/config.mk b/Ubiquitous/XiZi_IIoT/board/kd233/config.mk
index 4f3c34383..ac381a53d 100644
--- a/Ubiquitous/XiZi_IIoT/board/kd233/config.mk
+++ b/Ubiquitous/XiZi_IIoT/board/kd233/config.mk
@@ -1,10 +1,10 @@
-export CFLAGS := -mcmodel=medany -march=rv64imafc -mabi=lp64f -fsingle-precision-constant -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -O0 -ggdb -fgnu89-inline  
+export CFLAGS := -mcmodel=medany -march=rv64imafdc -mabi=lp64d -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -O0 -ggdb -fgnu89-inline  
 # $(warning, "DEBUG, here add cflags.")
 # export CFLAGS += -nostdlib -nostdinc -fno-builtin
-export AFLAGS := -c -mcmodel=medany -march=rv64imafc -mabi=lp64f -fsingle-precision-constant -x assembler-with-cpp -ggdb
-export LFLAGS := -mcmodel=medany -march=rv64imafc -mabi=lp64f -fsingle-precision-constant -nostartfiles -Wl,--gc-sections,-Map=XiZi-kd233.map,-cref,-u,_start -T $(BSP_ROOT)/link.lds
+export AFLAGS := -c -mcmodel=medany -march=rv64imafdc -mabi=lp64d -x assembler-with-cpp -ggdb
+export LFLAGS := -mcmodel=medany -march=rv64imafdc -mabi=lp64d -nostartfiles -Wl,--gc-sections,-Map=XiZi-kd233.map,-cref,-u,_start -T $(BSP_ROOT)/link.lds
 
-export APPLFLAGS := -mcmodel=medany -march=rv64imafc -mabi=lp64f -fsingle-precision-constant -nostartfiles -Wl,--gc-sections,-Map=XiZi-app.map,-cref,-u, -T $(BSP_ROOT)/link_userspace.lds
+export APPLFLAGS := -mcmodel=medany -march=rv64imafdc -mabi=lp64d -nostartfiles -Wl,--gc-sections,-Map=XiZi-app.map,-cref,-u, -T $(BSP_ROOT)/link_userspace.lds
 
 ifeq ($(CONFIG_LIB_MUSLLIB), y)
 export LFLAGS += -nostdlib -nostdinc -fno-builtin -nodefaultlibs
@@ -16,7 +16,7 @@ ifeq ($(CONFIG_RESOURCES_LWIP), y)
 export LINK_LWIP := $(KERNEL_ROOT)/resources/ethernet/LwIP/liblwip.a
 endif
 
-export CXXFLAGS := -mcmodel=medany -march=rv64imafc -mabi=lp64f -fsingle-precision-constant -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -O0 -ggdb 
+export CXXFLAGS := -mcmodel=medany -march=rv64imafdc -mabi=lp64d -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -O0 -ggdb 
 
 export CROSS_COMPILE ?=/opt/gnu-mcu-eclipse/riscv-none-gcc/8.2.0-2.1-20190425-1021/bin/riscv-none-embed-
 
diff --git a/Ubiquitous/XiZi_IIoT/board/maix-go/config.mk b/Ubiquitous/XiZi_IIoT/board/maix-go/config.mk
index a461204be..36f17b37b 100644
--- a/Ubiquitous/XiZi_IIoT/board/maix-go/config.mk
+++ b/Ubiquitous/XiZi_IIoT/board/maix-go/config.mk
@@ -1,10 +1,10 @@
-export CFLAGS := -mcmodel=medany -march=rv64imafc -mabi=lp64f -fsingle-precision-constant -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -O0 -ggdb -fgnu89-inline -Werror
-export AFLAGS := -c -mcmodel=medany -march=rv64imafc -mabi=lp64f -fsingle-precision-constant -x assembler-with-cpp -ggdb
-export LFLAGS := -mcmodel=medany -march=rv64imafc -mabi=lp64f -fsingle-precision-constant -nostartfiles -Wl,--gc-sections,-Map=XiZi.map,-cref,-u,_start -T $(BSP_ROOT)/link.lds
+export CFLAGS := -mcmodel=medany -march=rv64imafdc -mabi=lp64d -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -O0 -ggdb -fgnu89-inline -Werror
+export AFLAGS := -c -mcmodel=medany -march=rv64imafdc -mabi=lp64d -x assembler-with-cpp -ggdb
+export LFLAGS := -mcmodel=medany -march=rv64imafdc -mabi=lp64d -nostartfiles -Wl,--gc-sections,-Map=XiZi.map,-cref,-u,_start -T $(BSP_ROOT)/link.lds
 
-export APPLFLAGS := -mcmodel=medany -march=rv64imafc -mabi=lp64f -fsingle-precision-constant -nostartfiles -Wl,--gc-sections,-Map=XiZi-app.map,-cref,-u, -T $(BSP_ROOT)/link_userspace.lds
+export APPLFLAGS := -mcmodel=medany -march=rv64imafdc -mabi=lp64d -nostartfiles -Wl,--gc-sections,-Map=XiZi-app.map,-cref,-u, -T $(BSP_ROOT)/link_userspace.lds
 
-export CXXFLAGS := -mcmodel=medany -march=rv64imafc -mabi=lp64f -fsingle-precision-constant -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -O0 -ggdb -Werror
+export CXXFLAGS := -mcmodel=medany -march=rv64imafdc -mabi=lp64d -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -O0 -ggdb -Werror
 
 export CROSS_COMPILE ?=/opt/gnu-mcu-eclipse/riscv-none-gcc/8.2.0-2.1-20190425-1021/bin/riscv-none-embed-
 
diff --git a/Ubiquitous/XiZi_IIoT/board/xidatong-riscv64/config.mk b/Ubiquitous/XiZi_IIoT/board/xidatong-riscv64/config.mk
index 764902b3e..691a2634d 100644
--- a/Ubiquitous/XiZi_IIoT/board/xidatong-riscv64/config.mk
+++ b/Ubiquitous/XiZi_IIoT/board/xidatong-riscv64/config.mk
@@ -1,6 +1,6 @@
-export CFLAGS := -mcmodel=medany -march=rv64imafc -mabi=lp64f -fsingle-precision-constant -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -O0 -ggdb -fgnu89-inline -Werror
-export AFLAGS := -c -mcmodel=medany -march=rv64imafc -mabi=lp64f -fsingle-precision-constant -x assembler-with-cpp -ggdb
-export LFLAGS := -mcmodel=medany -march=rv64imafc -mabi=lp64f -fsingle-precision-constant -nostartfiles -Wl,--gc-sections,-Map=XiZi-xidatong-riscv64.map,-cref,-u,_start -T $(BSP_ROOT)/link.lds
+export CFLAGS := -mcmodel=medany -march=rv64imafdc -mabi=lp64d -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -O0 -ggdb -fgnu89-inline -Werror
+export AFLAGS := -c -mcmodel=medany -march=rv64imafdc -mabi=lp64d -x assembler-with-cpp -ggdb
+export LFLAGS := -mcmodel=medany -march=rv64imafdc -mabi=lp64d -nostartfiles -Wl,--gc-sections,-Map=XiZi-xidatong-riscv64.map,-cref,-u,_start -T $(BSP_ROOT)/link.lds
 
 ifeq ($(CONFIG_LIB_MUSLLIB), y)
 export LFLAGS += -nostdlib -nostdinc # -fno-builtin -nodefaultlibs
@@ -12,9 +12,9 @@ ifeq ($(CONFIG_RESOURCES_LWIP), y)
 export LINK_LWIP := $(KERNEL_ROOT)/resources/ethernet/LwIP/liblwip.a
 endif
 
-export APPLFLAGS := -mcmodel=medany -march=rv64imafc -mabi=lp64f -fsingle-precision-constant -nostartfiles -Wl,--gc-sections,-Map=XiZi-xidatong-riscv64.map,-cref,-u, -T $(BSP_ROOT)/link_userspace.lds
+export APPLFLAGS := -mcmodel=medany -march=rv64imafdc -mabi=lp64d -nostartfiles -Wl,--gc-sections,-Map=XiZi-xidatong-riscv64.map,-cref,-u, -T $(BSP_ROOT)/link_userspace.lds
 
-export CXXFLAGS := -mcmodel=medany -march=rv64imafc -mabi=lp64f -fsingle-precision-constant -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -O0 -ggdb -Werror
+export CXXFLAGS := -mcmodel=medany -march=rv64imafdc -mabi=lp64d -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -O0 -ggdb -Werror
 
 export CROSS_COMPILE ?=/opt/gnu-mcu-eclipse/riscv-none-gcc/8.2.0-2.1-20190425-1021/bin/riscv-none-embed-