[U-Boot] uboot mips cpu flash memory map 0x1F000000 or 0xBF000000

Hi All,

Uboot works.Flash size is 4Mbyte.SDRAM is 32Mbyte.Its actually memory map is: 0xBF00 0000 - 0xBF3F FFFF. But MIPS CPU datasheet say: flasy memory map is:0x1F00 0000 - 0x1FFF FFFF. Datasheet is wrong? or flash memory map can be changed by some rules?And What is the rule?

Uboot version: v1.1.3; MIPS CPU: Ralink RT3052;

RT3052 datasheet Memory Map say: Start address end address Size 1F00.0000 - 1FFF.FFFF 16MB(flash) Description When BOOT_FROM = 2’b00,up-to 16MB external 16-bit flash is mapped. When BOOT_FROM = 2’b01, up-to 8MB external 8-bit flash is mapped.

Thanks.

Regards,