Hello, 김영순 wrote: > I’ve worked on my custum board based on SEQUOIA. > > > I’d like to add new device (DSP, SIZE=256M, CS4). > I added tlbentry(256M) in init.S and defined CS4 in sequoia.h. > > Init.S: > /* TLB-entry for EBC(DSP) */ > tlbentry( CFG_DSP_BASE, SZ_256M, CFG_DSP_BASE, 1, > AC_R|AC_W|AC_X|SA_G|SA_I ) > > sequoia.h: > #define CFG_DSP_BASE 0xd0000000 > #define CFG_EBC_PB4AP 0x05014300 > #define CFG_EBC_PB4CR (CFG_DSP_BASE | 0x3a000) > > The problem is this. > When I access over 2Mbytes area of DSP4(Over d0200000), I’ve got bus > error in my application. > Accessing to under 2Mbytes, it works well….
This behavior is expected because you configured CS4 bank size for 2 MB. But you can configure max. 128 MB for EBC bank size, so you need additional chip select to be able to cover 256 MB range. > Are there anything to do, when I want to attatch new devices???? Proper HW design and configuration of bank access parameters? > ------=_NextPart_000_000D_01C9018B.214C4BE0 > Content-Type: text/html; > charset="ks_c_5601-1987" > Content-Transfer-Encoding: quoted-printable Please do not post to old list and do not post HTML. Best Regards, Anatolij -- 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] ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ U-Boot-Users mailing list U-Boot-Users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/u-boot-users
