On Monday 18 August 2008, 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)

With this you defined the bank size to 2MB. So a bus error for access "after" these 2MB is to be expected. Try this instead:

#define CFG_EBC_PB4CR (CFG_DSP_BASE | 0xfa000)

This will only cover 128MB though as this is the max for an EBC bank size.

Best regards, Stefan

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