I getting the same with wheezy.
It shows
## Executing script at 43100000
0 bytes read in 290 ms (o Bytes/s)
26583 bytes read in 518 ms (49.8 KiB/s)
** ext4fs_devread read error - block
Kernel image @ 0x46000000 [ 0x000000 - 0x519668 ]
## Flattened Device Tree blog at 49000000
Booting using the fdt blog at 0x49000000
Ising Device Tree in place at 49000000, end 490097d6
Starting kernel ...