m8260_map_io

[aldo lab]

Hi all,

I've seen a region of 256MB starting from 0xe0000000 that is io
blocking with a BAT filled with Inhibit cache and guarded.
do you know which is the reason of this mapping because is not so
clear from the code.

201 static void __init
202 m8260_map_io(void)
203 {
204         uint addr;
205
206         /* Map IMMR region to a 256MB BAT */
207         addr = (cpm2_immr != NULL) ? (uint)cpm2_immr : CPM_MAP_ADDR;
208         io_block_mapping(addr, addr, 0x10000000, _PAGE_IO);
209
210         /* Map I/O region to a 256MB BAT */
211         io_block_mapping(IO_VIRT_ADDR, IO_PHYS_ADDR, 0x10000000, _PAGE_IO);
212 }
213



Thank you
Aldo