1 files changed, 92 insertions, 0 deletions
diff --git a/sys/arm/amlogic/aml8726/aml8726_l2cache.c b/sys/arm/amlogic/aml8726/aml8726_l2cache.c
new file mode 100644
index 0000000..e20a4a0
--- /dev/null
+++ b/sys/arm/amlogic/aml8726/aml8726_l2cache.c
@@ -0,0 +1,92 @@
+/*-
+ * Copyright 2013-2015 John Wehle <john@feith.com>
+ * All rights reserved.
+ *
+ * Based on omap4_l2cache.c by Olivier Houchard
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/rman.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
+
+#include <machine/bus.h>
+#include <machine/pl310.h>
+
+void
+platform_pl310_init(struct pl310_softc *sc)
+{
+	uint32_t aux;
+
+	aux = pl310_read4(sc, PL310_AUX_CTRL);
+
+	/*
+	 * The Amlogic Linux platform code enables via AUX:
+	 *
+	 *   Early BRESP
+	 *   Full Line of Zero (which must match processor setting)
+	 *   Data Prefetch
+	 *
+	 * and additionally on the m6 enables:
+	 *
+	 *   Instruction Prefetch
+	 *
+	 * For the moment we only enable Data Prefetch ...
+	 * further refinements can happen as things mature.
+	 */
+
+	/*
+	 * Disable instruction prefetch.
+	 */
+	aux &= ~AUX_CTRL_INSTR_PREFETCH;
+
+	/*
+	 * Enable data prefetch.
+	 */
+	aux |= AUX_CTRL_DATA_PREFETCH;
+
+	pl310_write4(sc, PL310_AUX_CTRL, aux);
+}
+
+void
+platform_pl310_write_ctrl(struct pl310_softc *sc, uint32_t val)
+{
+
+	pl310_write4(sc, PL310_CTRL, val);
+}
+
+void
+platform_pl310_write_debug(struct pl310_softc *sc, uint32_t val)
+{
+
+	pl310_write4(sc, PL310_DEBUG_CTRL, val);
+}