Hi Zhanglei459, > Now I am debugging video chip MB86297A.Reference to hardware manual,I > have configured PCI registers ,Carmine Control registers and DRAM Control > registers under U-boot , other modules registers have not been configured.I > dont know how to verify DRAM is configured correctly. When I "md" video > memory,they are all zero,and after I "mm" video memory,they are "md" still > display all zero .
Something must be wrong in your configuration. I recently did a standard "mtest" on a CoralP attached graphics memory *after* correctly setting up the CoralP control registers. Note that I had to setup CCF and MMR registers correctly (swapping endinanness by hand!). > Are DRAM Control registers configured wrong? Most likely. > Does CPU modify video memory? No, why should it? Cheers Detlev -- five monkeys, two typewriters, ten minutes -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-40 Fax: (+49)-8142-66989-80 Email: [EMAIL PROTECTED] ------------------------------------------------------------------------- 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 [email protected] https://lists.sourceforge.net/lists/listinfo/u-boot-users
