Date: Wed, 16 Oct 2013 19:06:45 +0000 (UTC) From: Ian Lepore <ian@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r256647 - head/sys/arm/arm Message-ID: <201310161906.r9GJ6jRx011405@svn.freebsd.org>
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Author: ian Date: Wed Oct 16 19:06:44 2013 New Revision: 256647 URL: http://svnweb.freebsd.org/changeset/base/256647 Log: Invalidate the entire L2 cache before enabling it. Say whether it has been enabled or disabled. Modified: head/sys/arm/arm/pl310.c Modified: head/sys/arm/arm/pl310.c ============================================================================== --- head/sys/arm/arm/pl310.c Wed Oct 16 18:36:53 2013 (r256646) +++ head/sys/arm/arm/pl310.c Wed Oct 16 19:06:44 2013 (r256647) @@ -341,8 +341,13 @@ pl310_attach(device_t dev) ctrl_value = pl310_read4(sc, PL310_CTRL); if (sc->sc_enabled && !(ctrl_value & CTRL_ENABLED)) { + /* invalidate current content */ + pl310_write4(pl310_softc, PL310_INV_WAY, 0xffff); + pl310_wait_background_op(PL310_INV_WAY, 0xffff); + /* Enable the L2 cache if disabled */ platform_pl310_write_ctrl(sc, CTRL_ENABLED); + device_printf(dev, "L2 Cache enabled\n"); } if (!sc->sc_enabled && (ctrl_value & CTRL_ENABLED)) { @@ -375,6 +380,7 @@ pl310_attach(device_t dev) EVENT_COUNTER_CTRL_C0_RESET | EVENT_COUNTER_CTRL_C1_RESET); + device_printf(dev, "L2 Cache disabled\n"); } if (sc->sc_enabled)
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