Date: Wed, 12 Aug 2015 17:06:23 +0000 (UTC) From: Andrew Turner <andrew@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r286674 - head/sys/arm64/arm64 Message-ID: <201508121706.t7CH6Nlv033694@repo.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: andrew Date: Wed Aug 12 17:06:22 2015 New Revision: 286674 URL: https://svnweb.freebsd.org/changeset/base/286674 Log: Set the counter-timer virtual offset to a know value, it may not have been set by the boot code and are reset to an implementation defined value that may be unknown. Sponsored by: ABT Systems Ltd Modified: head/sys/arm64/arm64/locore.S Modified: head/sys/arm64/arm64/locore.S ============================================================================== --- head/sys/arm64/arm64/locore.S Wed Aug 12 16:53:37 2015 (r286673) +++ head/sys/arm64/arm64/locore.S Wed Aug 12 17:06:22 2015 (r286674) @@ -220,6 +220,14 @@ drop_to_el1: /* Don't trap to EL2 for CP15 traps */ msr hstr_el2, xzr + /* Enable access to the physical timers at EL1 */ + mrs x2, cnthctl_el2 + orr x2, x2, #(CNTHCTL_EL1PCTEN | CNTHCTL_EL1PCEN) + msr cnthctl_el2, x2 + + /* Set the counter offset to a known value */ + msr cntvoff_el2, xzr + /* Hypervisor trap functions */ adr x2, hyp_vectors msr vbar_el2, x2
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201508121706.t7CH6Nlv033694>