Linux/AM3352: U-boot questions

Hi,

Another question...
I saw the message in U-Boot source code:

/*
* Place the image at the start of the ROM defined image space (per
* CONFIG_SPL_TEXT_BASE and we limit our size to the ROM-defined
* downloaded image area. We initalize DRAM as soon as we can so that
* we can place stack, malloc and BSS there. We load U-Boot itself into
* memory at 0x80800000 for legacy reasons (to not conflict with older
* SPLs). We have our BSS be placed 2MiB after this, to allow for the
* default Linux kernel address of 0x80008000 to work with most sized
* kernels, in the Falcon Mode case. We have the SPL malloc pool at the
* end of the BSS area. We place our stack at 32MiB after the start of
* DRAM to allow room for all of the above.
*/

Seems SPL will put stack at 0x80000000 + offset 32MiB, but my LPDDR1 is only 32MiB...

1. Can I move the stack address? Any side effect?
2. Where is the appropriate location for the stack, if I don't want to place stack at offset 32MiB?
3. Is there any document release from TI says the minimum DDR size that AM335x Linux support?

Anyone?

Best Regards,
Wayne Kuo