Add a secure monitor call function, so that a secondary cache controller

driver can talk to its controller properly.

From drahn at dalerahn.com.

ok bmercer@

2 files changed, 48 insertions, 1 deletions

diff --git a/sys/arch/arm/cortex/smc.h b/sys/arch/arm/cortex/smc.h
new file mode 100644
index 00000000000..a537852f73c
--- /dev/null
+++ b/sys/arch/arm/cortex/smc.h
@@ -0,0 +1,29 @@
+/*	$OpenBSD: smc.h,v 1.1 2013/05/01 14:09:50 patrick Exp $	*/
+/*
+ * Copyright (c) 2013 Dale Rahn <drahn@dalerahn.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* SMC interface for hardware */
+
+#ifdef _KERNEL
+
+/* XXX these defines go here ? */
+#define SMC_L2_DBG	0x100
+#define SMC_L2_CTL	0x102
+
+void platform_smc_write(bus_space_tag_t, bus_space_handle_t, bus_size_t,
+    uint32_t, uint32_t);
+
+#endif /* _KERNEL */
diff --git a/sys/arch/beagle/beagle/beagle_machdep.c b/sys/arch/beagle/beagle/beagle_machdep.c
index 5b759dd2541..700eb32b159 100644
--- a/sys/arch/beagle/beagle/beagle_machdep.c
+++ b/sys/arch/beagle/beagle/beagle_machdep.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: beagle_machdep.c,v 1.16 2013/05/01 13:49:18 patrick Exp $ */
+/*	$OpenBSD: beagle_machdep.c,v 1.17 2013/05/01 14:09:50 patrick Exp $ */
 /*	$NetBSD: lubbock_machdep.c,v 1.2 2003/07/15 00:25:06 lukem Exp $ */
 
 /*
@@ -144,6 +144,7 @@
 #include <arm/armv7/armv7reg.h>
 #include <arm/armv7/armv7var.h>
 
+#include <arm/cortex/smc.h>
 #include <machine/machine_reg.h>
 #include <beagle/dev/omapvar.h>
 
@@ -1014,3 +1015,20 @@ board_startup(void)
 #endif
 	}
 }
+
+void
+platform_smc_write(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off,
+    uint32_t op, uint32_t val)
+{
+	extern void omap4_smc_call(uint32_t, uint32_t);
+
+	switch (op) {
+	case 0x100:	/* PL310 DEBUG */
+	case 0x102:	/* PL310 CTL */
+		break;
+	default:
+		panic("platform_smc_write: invalid operation %d", op);
+	}
+
+	omap4_smc_call(op, val);
+}