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RE: [PATCH] SRAM timings for SA1100 (Assabet with Nepons
- To: (Stefan Eletzhofer) <schuehle at t-online dot de>
- Subject: RE: [ECOS] [PATCH] SRAM timings for SA1100 (Assabet with Nepons
- From: Gary Thomas <gthomas at redhat dot com>
- Date: Wed, 25 Jul 2001 10:35:24 -0600 (MDT)
- Cc: ecos <ecos-discuss at sourceware dot cygnus dot com>
- Organization: Red Hat, Inc.
I plan to look at this, but it may require some configury since these changes
seem to be very dependent upon the Assabet revision.
I'll let you know when & how they have been integrated into the CVS sources.
On 25-Jul-2001 Stefan Eletzhofer wrote:
> Hello,
> below is my patch against the current 1.2 CVS version of hal_platform_setup.h
> to get the Neponset Expansion Board working unter Ecos/RedBoot.
>
> This patch uses the timings as in the bootldr bootloader for LINUX. It works
> perfectly for me (i use BootLdr to boot a 2.4.6 Linux kernel and use PCMCIA
> through the SA1111 quite heavily).
>
> --- hal_platform_setup.h.orig Wed Jul 25 18:19:21 2001
> +++ hal_platform_setup.h Mon Jul 2 19:44:00 2001
> @@ -195,18 +195,26 @@
>
> // DRAM controller initialization
> dram_table:
> +// msc0 = 4b384370
> +// msc1 = 22212419
> +// msc2 = 42196669
> +// mecr = 994a994a
> .word SA11X0_DRAM0_CAS_0, 0xAAAAAA7F
> .word SA11X0_DRAM0_CAS_1, 0xAAAAAAAA
> .word SA11X0_DRAM0_CAS_2, 0xAAAAAAAA
> -// .word SA11X0_STATIC_CONTROL_0, 0x4B384B38
> -// .word SA11X0_STATIC_CONTROL_1, 0x22212419
> + //.word SA11X0_STATIC_CONTROL_0, 0x4B384B38
> + //.word SA11X0_STATIC_CONTROL_1, 0x22212419
> + .word SA11X0_STATIC_CONTROL_0, 0x4b384370
> + .word SA11X0_STATIC_CONTROL_1, 0x22212419
> .word SA11X0_EXP_BUS_CONFIGURATION, 0x994A994A
> .word SA11X0_REFRESH_CONFIGURATION, 0x49FC0327
> .word SA11X0_DRAM2_CAS_0, 0xAAAAAA7F
> .word SA11X0_DRAM2_CAS_1, 0xAAAAAAAA
> .word SA11X0_DRAM2_CAS_2, 0xAAAAAAAA
> -// .word SA11X0_STATIC_CONTROL_2, 0x42194449
> + //.word SA11X0_STATIC_CONTROL_2, 0x42194449
> + .word SA11X0_STATIC_CONTROL_2, 0x42196669
> .word SA11X0_SMROM_CONFIGURATION, 0xAFCCAFCC
> + //.word SA11X0_SMROM_CONFIGURATION, 0x994a994a
> .word SA11X0_DRAM_CONFIGURATION, 0x72547254 // Disabled
> .word 0, 0
> 19: