diff --git a/include/sbi/sbi_platform.h b/include/sbi/sbi_platform.h
index 5cbc1bc3..1e9a23c1 100644
--- a/include/sbi/sbi_platform.h
+++ b/include/sbi/sbi_platform.h
@@ -164,7 +164,7 @@ struct sbi_platform_operations {
 };
 
 /** Platform default per-HART stack size for exception/interrupt handling */
-#define SBI_PLATFORM_DEFAULT_HART_STACK_SIZE	8192
+#define SBI_PLATFORM_DEFAULT_HART_STACK_SIZE	CONFIG_DEFAULT_HART_STACK_SIZE
 
 /** Platform default heap size */
 #define SBI_PLATFORM_DEFAULT_HEAP_SIZE(__num_hart)	\
diff --git a/lib/sbi/Kconfig b/lib/sbi/Kconfig
index 89245a25..e76aecca 100644
--- a/lib/sbi/Kconfig
+++ b/lib/sbi/Kconfig
@@ -2,6 +2,11 @@
 
 menu "Generic SBI Support"
 
+config DEFAULT_HART_STACK_SIZE
+	int "Default per-HART stack size (bytes)"
+	range 8192 1048576
+	default 8192
+
 config CONSOLE_EARLY_BUFFER_SIZE
 	int "Early console buffer size (bytes)"
 	default 256