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Re: Redboot on AT91M55800A
- From: Gary Thomas <gary at mlbassoc dot com>
- To: collaone at gnbts dot units dot it
- Cc: ecos-discuss at sourceware dot org
- Date: Thu, 29 Mar 2007 08:18:02 -0600
- Subject: Re: [ECOS] Redboot on AT91M55800A
- References: <1175177282.460bc842840fb@webmail2.units.it>
collaone@gnbts.units.it wrote:
Hi all,
I'm trying to port eCos on an evaulation board with AT91M55800A device.
I've compiled the only Redboot environment, but it doesn't work.
Using leds, I've modified the hardware setup to meet the board's
characteristics, and now it hung on cyg_hal_invoke_constructors.
If I jump over this function, it enter in a loop in the function cyg_start.
I need help to solve this problem.
Do you have JTAG with debugging capability? If so, that's the
best way to attack new board ports.
Lacking that, I'd start by getting the serial console working.
This is normally pretty easy (most ports are about the same
with only a few details that change). The serial debug port
gets initialized very early on - typically in the variant/platform
init code. Once it's working, you can use diag_printf() calls
to work your way through the remaining issues.
--
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Gary Thomas | Consulting for the
MLB Associates | Embedded world
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