On the UniElec U7623 board there is no external SD slot and the preloader
doesn't fill in the magic field at 0x81dffff0 to indicate that it was
booted from eMMC.

Signed-off-by: David Woodhouse <[email protected]>
---
 board/mediatek/mt7623/mt7623_rfb.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/board/mediatek/mt7623/mt7623_rfb.c 
b/board/mediatek/mt7623/mt7623_rfb.c
index 4ec2764976..984e75ccaf 100644
--- a/board/mediatek/mt7623/mt7623_rfb.c
+++ b/board/mediatek/mt7623/mt7623_rfb.c
@@ -4,6 +4,7 @@
  */
 
 #include <common.h>
+#include <mmc.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -15,10 +16,15 @@ int board_init(void)
        return 0;
 }
 
+#ifdef CONFIG_MMC
 int mmc_get_boot_dev(void)
 {
        int g_mmc_devid = -1;
        char *uflag = (char *)0x81DFFFF0;
+
+       if (!find_mmc_device(1))
+               return 0;
+
        if (strncmp(uflag,"eMMC",4)==0) {
                g_mmc_devid = 0;
                printf("Boot From Emmc(id:%d)\n\n", g_mmc_devid);
@@ -33,3 +39,4 @@ int mmc_get_env_dev(void)
 {
        return mmc_get_boot_dev();
 }
+#endif
-- 
2.26.2

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