Luigi 'Comio' Mantellini wrote: >> So it seems Alchemy-based SoC. if so, >> > > No. I'm working on a SoC that uses a IP core from MIPS (mips4kec). The > mips core should be (formally) a standard mips core. > >>> What I need to change on my board specific u-boot in order to use the >>> KSEG1 address space? >> what do you mean "in order to use the KSEG1 address space?" I'm not >> familiar with Au1XXX, but you might need CONFIG_AU1X00 in your board >> config. Some URLs added[1][2]. >> > > The CONFIG_AU1X00 doesn't work for me. from datasheet there aren't > differences between my SoC and the standalone mips4kec. This is the > memory map how depicted by the datasheet: > > 0x00000000--0x7fffffff KUser - Cached / Mapped > 0x80000000--0x9fffffff KSEG0 - Cached / Unmapped > 0xA0000000--0x9fffffff KSEG1 - Uncached / Unmapped > ....
Then I'm confused. Physical address map of your SoC will be helpful. Where is the SDRAM mapped to? > I think that on my application the UNCACHED_SDRAM should map the address > on KSEG1 (how it is now) but this simply doesn't work. Instead, using > the PHYSADDR(a) macro... the kernel is able to start. > > I suspect that there are issues on cache management. Can be? IMHO it's not related to cache. Shinya ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ U-Boot-Users mailing list U-Boot-Users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/u-boot-users
