[U-Boot] Boot from USB support for Kirkwood SOC

[Wolfgang Denk]

Dear xiangfu,

In message <4A30B020.7080109 at gmail.com> you wrote:
>
> here is part of JZ4740 cpu data sheet [1]
> --
> 3.7.3   BOOT
> Jz4740 support 3 different boot sources depending on BOOT_SEL0 and BOOT_SEL1 pin values.
> Table 3-29 lists them.
>                              Table 3-29 Boot from 3 boot sources
> 
> BOOT_SEL1 BOOT_SEL0                Boot Source
>     0         0     Boot from NOR flash at CS4
>     0         1     Boot from USB device
>     1         0     Boot from 512 page NAND flash at CS1
>     1         1     Boot from 2k page NAND flash at CS1

cool. "3 different boot sources" - one, two, three, four ;-)

Best regards,

Wolfgang Denk

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