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From: 김영순 <yskim@human-rh.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [Add tlbentry problem]
Date: Mon, 18 Aug 2008 23:52:19 +0900	[thread overview]
Message-ID: <000001c90142$03ca7900$0b5f6b00$@com> (raw)

 

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?

 

 

 

             reply	other threads:[~2008-08-18 14:52 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-08-18 14:52 김영순 [this message]
2008-08-18 15:28 ` [U-Boot] [Add tlbentry problem] Stefan Roese
2008-09-09 20:19 ` Feng Kan

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