diff --git a/tools/flash_loader/.gitignore b/tools/flash_loader/.gitignore
deleted file mode 100644
index 7000dc9..0000000
--- a/tools/flash_loader/.gitignore
+++ /dev/null
@@ -1,9 +0,0 @@
-# Object files
-*.o
-*.ko
-*.obj
-*.bin
-*.dump
-*.mem
-flash_loader
-tinyriscv.inc
diff --git a/tools/flash_loader/Makefile b/tools/flash_loader/Makefile
deleted file mode 100644
index 9193ff7..0000000
--- a/tools/flash_loader/Makefile
+++ /dev/null
@@ -1,58 +0,0 @@
-TARGET := flash_loader
-
-BSP_DIR := ../../sdk/bsp
-
-RISCV_TOOLS_PATH := /opt/riscv32/bin
-RISCV_TOOLS_PREFIX := riscv32-unknown-elf-
-
-RISCV_GCC     := $(abspath $(RISCV_TOOLS_PATH)/$(RISCV_TOOLS_PREFIX)gcc)
-RISCV_AS      := $(abspath $(RISCV_TOOLS_PATH)/$(RISCV_TOOLS_PREFIX)as)
-RISCV_GXX     := $(abspath $(RISCV_TOOLS_PATH)/$(RISCV_TOOLS_PREFIX)g++)
-RISCV_OBJDUMP := $(abspath $(RISCV_TOOLS_PATH)/$(RISCV_TOOLS_PREFIX)objdump)
-RISCV_GDB     := $(abspath $(RISCV_TOOLS_PATH)/$(RISCV_TOOLS_PREFIX)gdb)
-RISCV_AR      := $(abspath $(RISCV_TOOLS_PATH)/$(RISCV_TOOLS_PREFIX)ar)
-RISCV_OBJCOPY := $(abspath $(RISCV_TOOLS_PATH)/$(RISCV_TOOLS_PREFIX)objcopy)
-RISCV_READELF := $(abspath $(RISCV_TOOLS_PATH)/$(RISCV_TOOLS_PREFIX)readelf)
-
-
-.PHONY: all
-all: $(TARGET)
-
-ASM_SRCS += start.S
-
-C_SRCS += main.c
-C_SRCS += $(BSP_DIR)/lib/flash_ctrl.c
-
-LINKER_SCRIPT := link.ld
-
-INCLUDES += -I$(BSP_DIR)/include
-
-LDFLAGS += -Os -T $(LINKER_SCRIPT) -nostartfiles -Wl,--gc-sections -Wl,--check-sections
-
-ASM_OBJS := $(ASM_SRCS:.S=.o)
-C_OBJS := $(C_SRCS:.c=.o)
-
-LINK_OBJS += $(ASM_OBJS) $(C_OBJS)
-LINK_DEPS += $(LINKER_SCRIPT)
-
-CLEAN_OBJS += $(TARGET) $(LINK_OBJS) $(TARGET).dump $(TARGET).bin $(TARGET).hex $(TARGET).mem tinyriscv.inc
-
-CFLAGS += -march=rv32im
-CFLAGS += -mabi=ilp32
-CFLAGS += -mcmodel=medlow -ffunction-sections -fdata-sections -fno-builtin-printf -fno-builtin-malloc
-
-$(TARGET): $(LINK_OBJS) $(LINK_DEPS) Makefile
-	$(RISCV_GCC) $(CFLAGS) $(INCLUDES) $(LINK_OBJS) -o $@ $(LDFLAGS)
-	$(RISCV_OBJCOPY) -O binary $@ $@.bin
-	$(RISCV_OBJDUMP) --disassemble-all $@ > $@.dump
-	./bin2char.sh < flash_loader.bin > tinyriscv.inc
-
-$(ASM_OBJS): %.o: %.S
-	$(RISCV_GCC) $(CFLAGS) $(INCLUDES) -c -o $@ $<
-
-$(C_OBJS): %.o: %.c
-	$(RISCV_GCC) $(CFLAGS) $(INCLUDES) -c -o $@ $<
-
-.PHONY: clean
-clean:
-	rm -f $(CLEAN_OBJS)
diff --git a/tools/flash_loader/bin2char.sh b/tools/flash_loader/bin2char.sh
deleted file mode 100755
index 85a0fd6..0000000
--- a/tools/flash_loader/bin2char.sh
+++ /dev/null
@@ -1,14 +0,0 @@
-#!/bin/sh
-
-[ $# != 0 ] && {
-    echo "Usage: $0"
-    echo
-    echo "Read binary data from standard input and write it as a comma separated"
-    echo "list of hexadecimal byte values to standard ouput. The output is usable"
-    echo "as a C array initializer. It is terminated with a comma so it can be"
-    echo "continued e.g. for zero termination."
-    exit 1
-}
-
-echo "/* Autogenerated with $0 */"
-od -v -A n -t x1 | sed 's/ *\(..\) */0x\1,/g'
diff --git a/tools/flash_loader/link.ld b/tools/flash_loader/link.ld
deleted file mode 100644
index e38cee4..0000000
--- a/tools/flash_loader/link.ld
+++ /dev/null
@@ -1,148 +0,0 @@
-OUTPUT_ARCH( "riscv" )
-ENTRY(_start)
-
-
-MEMORY
-{
-  flash (wxa!ri) : ORIGIN = 0x20000000, LENGTH = 4K
-  ram (wxa!ri) :   ORIGIN = 0x20001000, LENGTH = 1K
-}
-
-
-SECTIONS
-{
-   __stack_size = DEFINED(__stack_size) ? __stack_size : 256;
-
-  .init           :
-  {
-    KEEP (*(SORT_NONE(.init)))
-  } >flash AT>flash 
-
-  .text           :
-  {
-    *(.text.unlikely .text.unlikely.*)
-    *(.text.startup .text.startup.*)
-    *(.text .text.*)
-    *(.gnu.linkonce.t.*)
-  } >flash AT>flash 
-
-  . = ALIGN(4);
-
-  PROVIDE (__etext = .);
-  PROVIDE (_etext = .);
-  PROVIDE (etext = .);
-
-  .preinit_array  :
-  {
-    PROVIDE_HIDDEN (__preinit_array_start = .);
-    KEEP (*(.preinit_array))
-    PROVIDE_HIDDEN (__preinit_array_end = .);
-  } >flash AT>flash 
-
-  .init_array     :
-  {
-    PROVIDE_HIDDEN (__init_array_start = .);
-    KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
-    KEEP (*(.init_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .ctors))
-    PROVIDE_HIDDEN (__init_array_end = .);
-  } >flash AT>flash 
-
-  .fini_array     :
-  {
-    PROVIDE_HIDDEN (__fini_array_start = .);
-    KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*)))
-    KEEP (*(.fini_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .dtors))
-    PROVIDE_HIDDEN (__fini_array_end = .);
-  } >flash AT>flash 
-
-  .ctors          :
-  {
-    /* gcc uses crtbegin.o to find the start of
-       the constructors, so we make sure it is
-       first.  Because this is a wildcard, it
-       doesn't matter if the user does not
-       actually link against crtbegin.o; the
-       linker won't look for a file to match a
-       wildcard.  The wildcard also means that it
-       doesn't matter which directory crtbegin.o
-       is in.  */
-    KEEP (*crtbegin.o(.ctors))
-    KEEP (*crtbegin?.o(.ctors))
-    /* We don't want to include the .ctor section from
-       the crtend.o file until after the sorted ctors.
-       The .ctor section from the crtend file contains the
-       end of ctors marker and it must be last */
-    KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors))
-    KEEP (*(SORT(.ctors.*)))
-    KEEP (*(.ctors))
-  } >flash AT>flash 
-
-  .dtors          :
-  {
-    KEEP (*crtbegin.o(.dtors))
-    KEEP (*crtbegin?.o(.dtors))
-    KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
-    KEEP (*(SORT(.dtors.*)))
-    KEEP (*(.dtors))
-  } >flash AT>flash 
-
-  .lalign         :
-  {
-    . = ALIGN(4);
-    PROVIDE( _data_lma = . );
-  } >flash AT>flash 
-
-  .dalign         :
-  {
-    . = ALIGN(4);
-    PROVIDE( _data = . );
-  } >ram AT>flash 
-
-  .data          :
-  {
-    *(.rdata)
-    *(.rodata .rodata.*)
-    *(.gnu.linkonce.r.*)
-    *(.data .data.*)
-    *(.gnu.linkonce.d.*)
-    . = ALIGN(8);
-    PROVIDE( __global_pointer$ = . + 0x800 );
-    *(.sdata .sdata.*)
-    *(.gnu.linkonce.s.*)
-    . = ALIGN(8);
-    *(.srodata.cst16)
-    *(.srodata.cst8)
-    *(.srodata.cst4)
-    *(.srodata.cst2)
-    *(.srodata .srodata.*)
-  } >ram AT>flash 
-
-  . = ALIGN(4);
-  PROVIDE( _edata = . );
-  PROVIDE( edata = . );
-
-  PROVIDE( _fbss = . );
-  PROVIDE( __bss_start = . );
-  .bss            :
-  {
-    *(.sbss*)
-    *(.gnu.linkonce.sb.*)
-    *(.bss .bss.*)
-    *(.gnu.linkonce.b.*)
-    *(COMMON)
-    . = ALIGN(4);
-  } >ram AT>ram 
-
-  . = ALIGN(8);
-  PROVIDE( _end = . );
-  PROVIDE( end = . );
-
-  .stack ORIGIN(ram) + LENGTH(ram) - __stack_size :
-  {
-    PROVIDE( _heap_end = . );
-    . = __stack_size;
-    PROVIDE( _sp = . );
-    __freertos_irq_stack_top = .;
-  } >ram AT>ram
-
-}
diff --git a/tools/flash_loader/main.c b/tools/flash_loader/main.c
deleted file mode 100644
index be70e5a..0000000
--- a/tools/flash_loader/main.c
+++ /dev/null
@@ -1,63 +0,0 @@
-#include <stdint.h>
-
-#include "flash_ctrl.h"
-
-
-// 烧写数据地址：4K + 1K + 256
-#define DATA_ADDR    (0x20001500)
-
-// 烧写数据长度
-#define DATA_LEN     (0x20001400)
-
-// 烧写(擦除)地址
-#define PROGRAM_ADDR (0x20001404)
-
-// 擦除标志
-// 0: 不擦除，1：擦除
-#define ERASE_FLAG   (0x20001408)
-
-// 烧写状态标志
-// bit0为烧写结束标志，0：未烧写完成，1：烧写完成。
-// bit1为烧写结果标志，0：烧写失败，1：烧写成功
-#define RESULT_FLAG  (0x2000140C)
-
-#define PAGE_SIZE    (256)
-
-
-static uint32_t *data_p;
-static uint32_t *result_p;
-static uint32_t len, addr;
-static uint32_t erase;
-static uint8_t succ;
-
-int main()
-{
-    data_p = (uint32_t *)DATA_ADDR;
-    result_p = (uint32_t *)RESULT_FLAG;
-    len = *((uint32_t *)DATA_LEN);
-    addr = *((uint32_t *)PROGRAM_ADDR);
-    erase = *((uint32_t *)ERASE_FLAG);
-
-    *result_p = 0;
-
-    flash_ctrl_init();
-
-    // 擦除操作
-    if (erase) {
-        // 擦除子扇区
-        succ = flash_ctrl_sector_erase(addr);
-    // 编程操作
-    } else {
-        // 编程
-        succ = flash_ctrl_page_program(addr, data_p, len);
-    }
-
-    flash_ctrl_deinit();
-
-    if (succ)
-        *result_p = 0x3;
-    else
-        *result_p = 0x1;
-
-    while (1);
-}
diff --git a/tools/flash_loader/start.S b/tools/flash_loader/start.S
deleted file mode 100644
index ce08b41..0000000
--- a/tools/flash_loader/start.S
+++ /dev/null
@@ -1,41 +0,0 @@
-    .section .init;
-    .globl _start;
-    .type _start,@function
-
-
-_start:
-.option push
-.option norelax
-	la gp, __global_pointer$
-.option pop
-	la sp, _sp
-
-	/* Load data section */
-	la a0, _data_lma
-	la a1, _data
-	la a2, _edata
-	bgeu a1, a2, 2f
-1:
-	lw t0, (a0)
-	sw t0, (a1)
-	addi a0, a0, 4
-	addi a1, a1, 4
-	bltu a1, a2, 1b
-2:
-
-	/* Clear bss section */
-	la a0, __bss_start
-	la a1, _end
-	bgeu a0, a1, 2f
-1:
-	sw zero, (a0)
-	addi a0, a0, 4
-	bltu a0, a1, 1b
-2:
-
-    li a0, 0
-    li a1, 0
-    call main
-
-loop:
-    j loop