diff --git a/components/drivers/include/drivers/sd.h b/components/drivers/include/drivers/sd.h
index fb29c8e774bf528f962e7915e5cd52df6da7a4d2..7d5fcacade9b3e80e50a60174e3a88cf5efb723a 100644
--- a/components/drivers/include/drivers/sd.h
+++ b/components/drivers/include/drivers/sd.h
@@ -34,6 +34,10 @@ extern "C" {
 
 rt_err_t mmcsd_send_if_cond(struct rt_mmcsd_host *host, rt_uint32_t ocr);
 rt_err_t mmcsd_send_app_op_cond(struct rt_mmcsd_host *host, rt_uint32_t ocr, rt_uint32_t *rocr);
+
+rt_err_t mmcsd_get_card_addr(struct rt_mmcsd_host *host, rt_uint32_t *rca);
+rt_int32_t mmcsd_get_scr(struct rt_mmcsd_card *card, rt_uint32_t *scr);
+
 rt_int32_t init_sd(struct rt_mmcsd_host *host, rt_uint32_t ocr);
 
 #ifdef __cplusplus
diff --git a/components/drivers/sdio/mmcsd_core.c b/components/drivers/sdio/mmcsd_core.c
index 57f38371b2f524af284d4a6d253361599d8f3d70..095ecaff8a4f300c44bc2d4667f549927a8fa5aa 100644
--- a/components/drivers/sdio/mmcsd_core.c
+++ b/components/drivers/sdio/mmcsd_core.c
@@ -26,6 +26,7 @@
 #include <drivers/mmcsd_core.h>
 #include <drivers/sd.h>
 #include <drivers/mmc.h>
+#include <drivers/sdio.h>
 
 #ifndef RT_MMCSD_STACK_SIZE
 #define RT_MMCSD_STACK_SIZE 1024
@@ -520,6 +521,7 @@ void mmcsd_set_data_timeout(struct rt_mmcsd_data       *data,
 rt_uint32_t mmcsd_select_voltage(struct rt_mmcsd_host *host, rt_uint32_t ocr)
 {
     int bit;
+    extern int __rt_ffs(int value);
 
     ocr &= host->valid_ocr;
 
diff --git a/components/drivers/sdio/sdio.c b/components/drivers/sdio/sdio.c
index 6b2d655dd741f531367d949dd45391a2bbe56f0f..9f387f0f6eeacd84210c4b736948333ee7271fca 100644
--- a/components/drivers/sdio/sdio.c
+++ b/components/drivers/sdio/sdio.c
@@ -24,6 +24,7 @@
 
 #include <drivers/mmcsd_core.h>
 #include <drivers/sdio.h>
+#include <drivers/sd.h>
 
 #ifndef RT_SDIO_STACK_SIZE
 #define RT_SDIO_STACK_SIZE 512