sun4i#fatload mmc 0 0x46000000 uImage
reading uImage
4553408 bytes read in 236 ms (18.4 MiB/s)
sun4i#bootm 0x46000000
returning for bootm_low 1073741824
retuning config arm 536870912
## Current stack ends at 0x5fe63da0 ## Booting kernel from Legacy Image at 46000000 ...
   Image Name:   Linux-3.11.0-rc1-00031-g4cfde52-
   Created:      2013-08-03  12:06:11 UTC
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    4553344 Bytes = 4.3 MiB
   Load Address: 40008000
   Entry Point:  40008000
   Verifying Checksum ... OK
   Loading Kernel Image ... OK
OK
using: ATAGS
## Transferring control to Linux (at address 40008000)...

Starting kernel ...

Uncompressing Linux... done, booting the kernel.

Error: unrecognized/unsupported machine ID (r1 = 0x00001008).

Available machine support:

ID (hex)	NAME
ffffffff	Generic DT based system
ffffffff	Allwinner A1X (Device Tree)

Please check your kernel config and/or bootloader.