[U-Boot] [Add tlbentry problem]

[김영순]

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….

 

Are there anything to do, when I want to attatch new devices????

 

Best Regards…