diff --git a/bb_cpu/startup/init_2.c b/bb_cpu/startup/init_2.c
index 3b25060..3148900 100644
--- a/bb_cpu/startup/init_2.c
+++ b/bb_cpu/startup/init_2.c
@@ -191,7 +191,12 @@ void exception_handler_2(uintptr_t mcause, uintptr_t epc, saved_registers *reg)
 
     //disble global interrupt;
     __asm volatile  ( "csrc mstatus,8" );
+    // 在mbadaddr寄存器写入值 gcc 15 中这个寄存器名称改了
+    #if __GNUC__ <= 10
     __asm volatile  ( "csrr %0, mbadaddr" : "=r"(mbadaddr));
+    #else
+    __asm volatile  ( "csrr %0, mtval" : "=r"(mbadaddr));
+    #endif
 
     switch(mcause) {
         case 0x0:
diff --git a/build/makefile.cfg b/build/makefile.cfg
index f20be6f..5f1e507 100644
--- a/build/makefile.cfg
+++ b/build/makefile.cfg
@@ -30,7 +30,13 @@ else
             RISCV_VER   = riscv3
         else
             CC          = riscv64-unknown-elf-gcc
-            ISA         = rv32imc
+            gcc_version=$(shell (${CC} -dumpversion | awk -F. '{print $1}'))
+            # $(info "gcc version is " ${gcc_version})
+            ifeq ($(gcc_version), 15.0.0)
+                ISA         = rv32imc_zicsr
+            else
+                ISA         = rv32imc
+            endif
             ABI         = ilp32
             RISCV_VER   = riscv
         endif
diff --git a/driver/src/hw/wdg.c b/driver/src/hw/wdg.c
index 4a8469d..d396bf8 100644
--- a/driver/src/hw/wdg.c
+++ b/driver/src/hw/wdg.c
@@ -195,7 +195,12 @@ uint32_t IRAM_ATTR wdg_handler(uint32_t vector, iot_addrword_t data)
         uintptr_t mbadaddr = 0, mepc = 0, mcause = 0;
         mbadaddr = 0xdeadfeed;
         __asm volatile ( "csrc mstatus, 8" );
+        // 在mbadaddr寄存器写入值 gcc 15 中这个寄存器名称改了
+        #if __GNUC__ <= 10
         __asm volatile ( "csrw mbadaddr, %0" :: "r"(mbadaddr) );
+        #else
+        __asm volatile ( "csrw mtval, %0" :: "r"(mbadaddr) );
+        #endif
         __asm volatile ( "csrr %0, mepc" : "=r"(mepc) );
         __asm volatile ( "csrr %0, mcause" : "=r"(mcause) );
         iot_sprintf(buf, "mcause: 0x%08x, mepc: 0x%08x, mbadaddr: 0x%08x\n",
@@ -266,7 +271,12 @@ uint32_t wdg_handler_1(uint32_t vector, iot_addrword_t data)
         print_cache_error_msg(buf);
         uint32_t mbadaddr = 0, mepc = 0, mcause = 0;
         __asm volatile ( "csrc mstatus, 8" );
-        __asm volatile ( "csrr %0, mbadaddr" : "=r"(mbadaddr) );
+        // 在mbadaddr寄存器写入值 gcc 15 中这个寄存器名称改了
+        #if __GNUC__ <= 10
+        __asm volatile  ( "csrr %0, mbadaddr" : "=r"(mbadaddr));
+        #else
+        __asm volatile  ( "csrr %0, mtval" : "=r"(mbadaddr));
+        #endif
         __asm volatile ( "csrr %0, mepc" : "=r"(mepc) );
         __asm volatile ( "csrr %0, mcause" : "=r"(mcause) );
         iot_sprintf(buf, "mcause: 0x%08x, mepc: 0x%08x, mbadaddr: 0x%08x\n",
diff --git a/driver/src/hw3/wdg.c b/driver/src/hw3/wdg.c
index d10220e..3a39d60 100644
--- a/driver/src/hw3/wdg.c
+++ b/driver/src/hw3/wdg.c
@@ -211,7 +211,12 @@ uint32_t IRAM_ATTR wdg_timeout_handler(uint32_t vector, iot_addrword_t data)
     uintptr_t mbadaddr = 0, mepc = 0, mcause = 0;
     mbadaddr = 0xdeadfeed;
     __asm volatile ( "csrc mstatus, 8" );
+    // 在mbadaddr寄存器写入值 gcc 15 中这个寄存器名称改了
+    #if __GNUC__ <= 10
     __asm volatile ( "csrw mbadaddr, %0" :: "r"(mbadaddr) );
+    #else
+    __asm volatile ( "csrw mtval, %0" :: "r"(mbadaddr) );
+    #endif
     __asm volatile ( "csrr %0, mepc" : "=r"(mepc) );
     __asm volatile ( "csrr %0, mcause" : "=r"(mcause) );
     iot_sprintf(buf, "mcause: 0x%08x, mepc: 0x%08x, mbadaddr: 0x%08x\n",
diff --git a/mfgtool/io_lib/src/iot_printf.c b/mfgtool/io_lib/src/iot_printf.c
index 50b3086..26b06f5 100644
--- a/mfgtool/io_lib/src/iot_printf.c
+++ b/mfgtool/io_lib/src/iot_printf.c
@@ -14,7 +14,7 @@ Information is free from patent or copyright infringement.
 ****************************************************************************/
 /* os shim includes */
 #include <stdio.h>
-
+#include "stdint.h"
 #include "strformat.h"
 
 static StrFormatResult write_str(void *user_data, const char *data, unsigned int len)
diff --git a/sec_cpu/startup/init_3.c b/sec_cpu/startup/init_3.c
index 71ed67e..908622e 100644
--- a/sec_cpu/startup/init_3.c
+++ b/sec_cpu/startup/init_3.c
@@ -178,7 +178,12 @@ void exception_handler_3(uintptr_t mcause, uintptr_t epc, saved_registers *reg)
 
     //disble global interrupt;
     __asm volatile  ( "csrc mstatus,8" );
+    // 在mbadaddr寄存器写入值 gcc 15 中这个寄存器名称改了
+    #if __GNUC__ <= 10
     __asm volatile  ( "csrr %0, mbadaddr" : "=r"(mbadaddr));
+    #else
+    __asm volatile  ( "csrr %0, mtval" : "=r"(mbadaddr));
+    #endif
 
     switch(mcause) {
         case 0x0:
diff --git a/startup/riscv/src/exception.c b/startup/riscv/src/exception.c
index 85ace27..6cfdb73 100644
--- a/startup/riscv/src/exception.c
+++ b/startup/riscv/src/exception.c
@@ -441,7 +441,11 @@ void exception_handler(uintptr_t mcause, uintptr_t epc, saved_registers *reg)
 
     //disble global interrupt;
     __asm volatile  ( "csrc mstatus,8" );
+    #if __GNUC__ <= 10
     __asm volatile  ( "csrr %0, mbadaddr" : "=r"(mbadaddr));
+    #else
+    __asm volatile  ( "csrr %0, mtval" : "=r"(mbadaddr));
+    #endif
 
     switch(mcause) {
         case 0x0:
diff --git a/startup/riscv3/src/exception.c b/startup/riscv3/src/exception.c
index d7cdeb7..f8d6679 100644
--- a/startup/riscv3/src/exception.c
+++ b/startup/riscv3/src/exception.c
@@ -461,7 +461,11 @@ void IRAM_ATTR exception_handler(uintptr_t mcause, uintptr_t epc, saved_register
 
     //disble global interrupt;
     __asm volatile  ( "csrc mstatus,8" );
+    #if __GNUC__ <= 10
     __asm volatile  ( "csrr %0, mbadaddr" : "=r"(mbadaddr));
+    #else
+    __asm volatile  ( "csrr %0, mtval" : "=r"(mbadaddr));
+    #endif
 
     asm volatile  ( "csrr %0, mcause" : "=r"(curr_mcause));
     asm volatile  ( "csrr %0, mip" : "=r"(curr_mip));