i2S6ULY2: update uboot into bootpart of eMMC flash

board/i2som/common/cmd_update_mmc.c

@@ -86,10 +86,12 @@ static int write_firmware(char *partname, unsigned long loadaddr,
 	/*
 	 * If updating U-Boot on eMMC
 	 * append the hardware partition where U-Boot lives.
+	 * mmc0 is SDCard slot
+	 * mmc1 is eMMC
 	 */
 	if (!strcmp(partname, "uboot") &&
 	    !strcmp(CONFIG_SYS_STORAGE_MEDIA, "mmc") &&
-	    (mmc_dev_index == 0))
+	    (mmc_dev_index == 1))
 		strcat(cmd, " $mmcbootpart");
 
 	/* Change to storage device */
@@ -475,7 +477,7 @@ int mmc_get_bootdevindex(void)
 {
 	switch(get_boot_device()) {
 		case SD1_BOOT ... SD4_BOOT:
-			return 1;
+			return 0;
 #if 0
 			/* SD card */
 			if (board_has_emmc())
@@ -483,8 +485,8 @@ int mmc_get_bootdevindex(void)
 			else
 				return 0;       /* index of USDHC2 if SOM has no eMMC */
 #endif
-		case MMC4_BOOT:
-			return 0;       /* index of SDHC4 (eMMC) */
+		case MMC2_BOOT:
+			return 1;       /* index of SDHC2 (eMMC) */
 		default:
 			/* return default value otherwise */
 			return CONFIG_SYS_MMC_ENV_DEV;

include/configs/i2som_6ull_14x14.h

@@ -190,6 +190,7 @@
 	"bootargs_linux=\0" \
 	"mmcdev="__stringify(CONFIG_SYS_MMC_ENV_DEV)"\0" \
 	"mmcpart=" CONFIG_BOOT_PARTITION "\0" \
+	"mmcbootpart=" __stringify(CONFIG_SYS_BOOT_PART_EMMC) "\0" \
 	"mmcroot=PARTUUID=1c606ef5-f1ac-43b9-9bb5-d5c578580b6b\0" \
 	"mmcautodetect=yes\0" \
 	"partition_mmc_linux=mmc rescan;" \