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MPC860: Enabling Datacache does not work
- From: Wolfgang Heppner <hep at iis dot fhg dot de>
- To: eCos-discuss <ecos-discuss at sources dot redhat dot com>
- Date: Thu, 11 Jul 2002 15:45:46 +0200
- Subject: [ECOS] MPC860: Enabling Datacache does not work
- Organization: FhG-IIS-A
Hello,
after porting eCos (latest CVS-update yesterday) to my custom hardware
(MPC680T based, MBX and Viper used as reference platforms), i tried to
enable the caches.
Problem: With Datacache enabled, my testapplication (which worked
before) does not run at all. It craches right after calling
"hal_enable_caches" in the following system-init functions.
I do provide a suitable memdesc table for my configuration in hal_aux.c
like MBX and Viper Hals:
CYGARC_MEMDESC_TABLE CYGBLD_ATTRIB_WEAK = {
CYGARC_MEMDESC_NOCACHE( 0xff000000, // MPC
internal map
0x00100000 ),
CYGARC_MEMDESC_CACHE ( CYGMEM_REGION_ram,
CYGMEM_REGION_ram_SIZE ),
CYGARC_MEMDESC_NOCACHE( CYGMEM_REGION_rom_reloc,
CYGMEM_REGION_rom_reloc_SIZE ),
CYGARC_MEMDESC_TABLE_END
};
Did anybody have the same problem?
Did i miss any customization in the HAL?
Thanks in advance
Wolfgang
--
Wolfgang Heppner
High Speed Kamerasysteme - Abt. Bildsensorik (ESY-B)
High Speed Camera Systems - Dept. Electronic Imaging (ESY-B)
Fraunhofer
Institut Integrierte Schaltungen
Angewandte Elektronik
Am Wolfsmantel 33
91058 Erlangen
(Germany)
Tel: +49 (0) 9131 776 528
Fax: +49 (0) 9131 776 598
email: hep@iis.fhg.de
web: http://www.iis.fhg.de
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