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Re: Porting ecos 2.0 to CDB89712
- From: Gary Thomas <gary at chez-thomas dot org>
- To: Ray Bozorg <rayb at micro-bit dot com>
- Cc: eCos Discussion <ecos-discuss at sources dot redhat dot com>
- Date: 13 Jun 2002 07:33:47 -0600
- Subject: Re: [ECOS] Porting ecos 2.0 to CDB89712
- References: <EPELLHLDGIHABCKCKDFJIEKACEAA.rayb@micro-bit.com>
On Thu, 2002-06-13 at 07:16, Ray Bozorg wrote:
>
> I am trying to port eCos 2.0 for CS89712 processor and eval board CDB89712
> from
> Cirrus Logic.
> I have a very old patch that I am trying to use.
> The question is that about the memory layout.
> For EDB7312, for example ram portion (file: mlt_arm_edb7312_ram.h) see
> attached.
> Now I need to convert the mlt_arm_cdb89712_ram. file see attached to look
> like the 7312 but I am not sure how to calculate or convert the
> #define CYGMEM_SECTION_heap1_SIZE (0xfd0000 - (size_t) CYG_LABEL_NAME
> (__heap1))
> I am not sure where the 0xfd0000 came from can anyone help me on this issue?
>
It came from 16M RAM, minus space for an LCD panel and the MMU tables.
How much RAM is on your new board?
Does it have an LCD panel?
Note: you might want to look at the ep7312 support (SEB238) which is
probably much closer to anything else for what you are doing.
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