Date: Tue, 30 Sep 2003 17:07:54 -0700 (PDT) From: Peter Wemm <peter@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 38932 for review Message-ID: <200310010007.h9107sqR040210@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=38932 Change 38932 by peter@peter_hammer on 2003/09/30 17:07:34 add lapic_disable() rather than having mpboot.s do it in asm. Affected files ... .. //depot/projects/hammer/sys/amd64/amd64/local_apic.c#10 edit .. //depot/projects/hammer/sys/amd64/include/apicvar.h#5 edit Differences ... ==== //depot/projects/hammer/sys/amd64/amd64/local_apic.c#10 (text+ko) ==== @@ -280,6 +280,24 @@ intr_restore(eflags); } +void +lapic_disable(void) +{ + struct lapic *la; + u_int32_t value; + register_t eflags; + + la = &lapics[lapic_id()]; + KASSERT(la->la_present, ("missing APIC structure")); + eflags = intr_disable(); + + /* Disable local APIC to be safe during boot */ + value = lapic->svr; + value &= ~APIC_SVR_SWEN; + lapic->svr = value; + intr_restore(eflags); +} + int lapic_id(void) { ==== //depot/projects/hammer/sys/amd64/include/apicvar.h#5 (text+ko) ==== @@ -159,6 +159,7 @@ int lapic_set_lvt_polarity(u_int apic_id, u_int lvt, u_char activehi); int lapic_set_lvt_triggermode(u_int apic_id, u_int lvt, u_char edgetrigger); void lapic_setup(void); +void lapic_disable(void); #endif /* !LOCORE */ #endif /* _MACHINE_APICVAR_H_ */
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