Date: Thu, 17 Nov 2011 11:49:37 +0100 From: =?iso-8859-1?Q?=22Marc_L=F6rner=22?= <loerner@gmx.de> To: marcel@xcllnt.net, freebsd-ia64@freebsd.org Subject: Booting 9.0 RC2 Message-ID: <20111117104937.192340@gmx.net>
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Hello Marcel, good news: loader starts now. Unfortunately I got the same problems that you have with Machine-Checks on the early booting stage with GENERIC. I did some investigation in code and code-changes and I probably found the cause: In __start (locore.S) you try to store PA of bootinfo block to pa_bootinfo which seems to reside in kernel-text space => DATA-ACCESS-RIGHTS fault because text-space is pinned in DTR with AR_RX. (c.f. mmu_setup_paged calling mmu_wire in the loader code) After changing this kernel started, at least I now got output on console. Unfortunately the next hang is in sapic_create accessing sa->sa_register which seems to be NULL, at least I got NULL as returnvalue of pmap_mapdev. Comparing the assembler code and supposed code from ia64/ia64/pmap.c I saw some differences. I didn't find out why the "normal" code just pinning sapic-address to region 7 wasn't included in kernel anymore. Hardcoding sa_register to 0xe0000000fedfe000 seemed to solve this problem for me. Hope this helps to get FreeBSD GENERIC working again on Montecito platforms, Marc -- Empfehlen Sie GMX DSL Ihren Freunden und Bekannten und wir belohnen Sie mit bis zu 50,- Euro! https://freundschaftswerbung.gmx.de
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