On Wed, Sep 10, 2008 at 10:51:50AM +0200, Rodrigo Vilar wrote: > I have enabled cache on a MPC8248 board using Block Address Translation. RAM > is cache enabled, everything else cache inhibited. > Apparently cache is enabled fine, however system hangs using tftp command > (in the middle of the transaction) or on external interrupt handling when I > set up a timer from a standalone application. Please note that if I define > DBAT0 cache inhibited, both tftp and the standalone program work fine.
Do you have snooping enabled on all of the DMA devices you're using? > lis r3, 0xF000 > ori r3, r3, BL_256Mb + Valid_Supervisor + Valid_User > lis r4, 0xF000 > ori r4, r4, Read_Write + Guarded + Cache_Inhibited > mtspr DBAT2U, r3 > mtspr DBAT3L, r4 > isync s/DBAT3L/DBAT2L/, presumably. -Scott _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
