* EST sbc8260 Local bus SDRAM
@ 2002-07-31 18:38 Ing.Gianfranco Morandi
0 siblings, 0 replies; 2+ messages in thread
From: Ing.Gianfranco Morandi @ 2002-07-31 18:38 UTC (permalink / raw)
To: LinuxPPC
Hello,
Has anyone used the local bus SDRAM on sbc8260?
I'm looking for the initialization code to program the chip select and start
the refresh timer.
Any help is appreciated.
Many thanks
Gianfranco Morandi
Eurostudio s.r.l.
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* Re: EST sbc8260 Local bus SDRAM
@ 2002-07-31 18:56 Allen Curtis
0 siblings, 0 replies; 2+ messages in thread
From: Allen Curtis @ 2002-07-31 18:56 UTC (permalink / raw)
To: gianfranco.morandi; +Cc: linuxppc-embedded
> I'm looking for the initialization code to program the
> chip select and start
> the refresh timer.
Here is a snippet from our BDI configuration file.
; Configure /CS5 to be local bus SDRAM
; CHIP SELECT BASE ADDRESS SIZE COMMENTS
; ----------- ------------ ---- --------
; /CS5 0x10000000 8MB 32-BIT LOCAL
SDRAM
;
WM32 0xF001012C 0xFF803280 ; OR5 (OPTION
REGISTER 5)
WM32 0xF0010128 0xF7001861 ; BR5 (BASE
REGISTER 5)
;------------------------------------------------------
; LOCAL SDRAM INITIALIZATION
;------------------------------------------------------
WM32 0xF0010194 0xEA46A552 ; LSDMR (LOCAL
SDRAM MODE REGISTER)
WM8 0x10000000 0xFF ; Access local
SDRAM
WM32 0xF0010194 0xCA46A552 ; LSDMR (LOCAL
SDRAM MODE REGISTER)
WM8 0x10000000 0xFF ; Access local
SDRAM
WM8 0x10000000 0xFF ; Access local
SDRAM
WM8 0x10000000 0xFF ; Access local
SDRAM
WM8 0x10000000 0xFF ; Access local
SDRAM
WM8 0x10000000 0xFF ; Access local
SDRAM
WM8 0x10000000 0xFF ; Access local
SDRAM
WM8 0x10000000 0xFF ; Access local
SDRAM
WM8 0x10000000 0xFF ; Access local
SDRAM
WM32 0xF0010194 0xDA46A552 ; LSDMR (LOCAL
SDRAM MODE REGISTER)
WM8 0x10000000 0xFF ; Access local
SDRAM
WM32 0xF0010194 0xC246A552 ; LSDMR (LOCAL
SDRAM MODE REGISTER)
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
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