On Monday 16 June 2008, Sachin Rane wrote: > Infact I was looking for the info to create a proper 'tlbentry' in 'init.S' > As per my understanding the 'tlbentry' is to map 32-bit address to 36-bit > address. > > The 'tlbenry' for the PCI Memory in 'init.S' is : > tlbentry( CFG_PCI_MEMBASE, SZ_256M, 0x00000000, 3, AC_R|AC_W|SA_G|SA_I ) > > The 'CFG_PCI_MEMBASE' is set to 0x80000000 in 'ocotea.h'. > > My question is how to select the value for 'CFG_PCI_MEMBASE'. > Can I use any value (say 0x50000000 ) provided it is not overlapping with > other devices?
Yes. I suggest to start with 0x80000000 since this leaves the first 2 GB for SDRAM. > If we are using Board Memory Map as a reference then the 32-bit address > 'CFG_PCI_MEMBASE' used in 'telbentry' should have set to: 0x90000000 Why is this? Which "Board Memory Map" are you referring to? > I am trying to find out the logic behind the selection of value for the > variabale 'CFG_PCI_MEMBASE' in: tlbentry( CFG_PCI_MEMBASE, SZ_256M, > 0x00000000, 3, AC_R|AC_W|SA_G|SA_I ) Whats the problems with using 0x80000000 here? Best regards, Stefan ===================================================================== DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-0 Fax: +49-8142-66989-80 Email: [EMAIL PROTECTED] ===================================================================== ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php _______________________________________________ U-Boot-Users mailing list U-Boot-Users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/u-boot-users
