This is the mail archive of the
ecos-discuss@sources.redhat.com
mailing list for the eCos project.
ROM startup + MMU tables
- TO: ecos-discuss at sources dot redhat dot com
- Subject: [ECOS] ROM startup + MMU tables
- From: "Nicola Bergamin [BW]" <nicola dot bergamin at bluewind dot it>
- Date: Tue, 7 Aug 2001 18:47:32 +0200
Hi,
Does anybody know about this ROM startup issue?
i'm trying to use a predefined arm/edb7xxx platform to arrange
eCos for my board. (no DRAM, only ROM and internal on-chip
SRAM, Cirrus Logic EP7209 derivative)
I configured with ROM startup, static MMU tables and NO DRAM
(macro CYGHWR_HAL_ARM_EDB7XXX_DRAM_SIZE==0).
This macro is used in the vectors.S module, and in
hal_platform_extras.h as well.The apparent cause seems to be that
putting DRAM size to zero causes MMU_TABLES_SIZE to be
undefined!!, thus causing errors in compilation.
I tried to configure to 16M DRAM size, but memory mapping
seems not working in that case.
Many thanks Nicola
------------------------------------------
Nicola Bergamin
BlueWind Embedded Systems Design
Via Steffani, 7/B
I-31033 Castelfranco Veneto (TV)
Office: +39 0 423 723431
Fax : +39 0 423 744738
GSM : +39 335 7556736
mailto:nicola.bergamin@bluewind.it
http://www.bluewind.it
------------------------------------------