-#define CONFIG_MACH_TYPE MACH_TYPE_COLIBRI_T30
-
-/* Environment in eMMC, before config block at the end of 1st "boot sector" */
-#define CONFIG_ENV_OFFSET (-CONFIG_ENV_SIZE + \
- CONFIG_TDX_CFG_BLOCK_OFFSET)
-#define CONFIG_SYS_MMC_ENV_DEV 0
-#define CONFIG_SYS_MMC_ENV_PART 1
-
-/* General networking support */
-#define CONFIG_TFTP_TSIZE
-
-/* Increase console I/O buffer size */
-#undef CONFIG_SYS_CBSIZE
-#define CONFIG_SYS_CBSIZE 1024
-
-/* Increase arguments buffer size */
-#undef CONFIG_SYS_BARGSIZE
-#define CONFIG_SYS_BARGSIZE CONFIG_SYS_CBSIZE
+#define UBOOT_UPDATE \
+ "uboot_hwpart=1\0" \
+ "uboot_blk=0\0" \
+ "set_blkcnt=setexpr blkcnt ${filesize} + 0x1ff && " \
+ "setexpr blkcnt ${blkcnt} / 0x200\0" \
+ "update_uboot=run set_blkcnt && mmc dev 0 ${uboot_hwpart} && " \
+ "mmc write ${loadaddr} ${uboot_blk} ${blkcnt}\0" \