Hi,

No it's not wrong. You should use CKSEG1ADDR() to access that address. KSEG1 is an unmapped uncached address space on physical memory. So, CKSEG1ADDR(1F000000) is basically 0xBF000000.

Regard, Nikolaos Pasaloukos

-----Original Message----- From: u-boot-bounces@lists.denx.de [mailto:u-boot- bounces@lists.denx.de] On Behalf Of RdrouterUboot Router Sent: 28 November 2013 13:06 To: u-boot@lists.denx.de Subject: [U-Boot] ralink RT3052 5X flash memory map

Hi All,

Uboot works.Flash size is 4Mbyte.SDRAM is 32Mbyte.Flash 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.