Tegra: SoC specific SiP handlers

This patch converts the common SiP handler to SoC specific SiP
handler. T210 and T132 have different SiP SMCs and so it makes
sense to move the SiP handler to soc/t132 and soc/t210 folders.

Change-Id: Idfe48384d63641137d74a095432df4724986b241
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

plat/nvidia/tegra/common/tegra_common.mk

@@ -60,5 +60,4 @@ BL31_SOURCES		+=	drivers/arm/gic/gic_v2.c			\
 				${COMMON_DIR}/tegra_delay_timer.c		\
 				${COMMON_DIR}/tegra_gic.c			\
 				${COMMON_DIR}/tegra_pm.c			\
-				${COMMON_DIR}/tegra_sip_calls.c			\
 				${COMMON_DIR}/tegra_topology.c

plat/nvidia/tegra/common/tegra_sip_calls.c → plat/nvidia/tegra/soc/t132/plat_sip_calls.c

@@ -43,7 +43,7 @@
 #define SCR_RW_BITPOS		__builtin_ctz(SCR_RW_BIT)
 
 /*******************************************************************************
- * Tegra SiP SMCs
+ * Tegra132 SiP SMCs
  ******************************************************************************/
 #define TEGRA_SIP_NEW_VIDEOMEM_REGION		0x82000003
 #define TEGRA_SIP_AARCH_SWITCH			0x82000004
@@ -58,7 +58,7 @@
 /*******************************************************************************
  * This function is responsible for handling all SiP calls from the NS world
  ******************************************************************************/
-uint64_t tegra_sip_handler(uint32_t smc_fid,
+uint64_t tegra132_sip_handler(uint32_t smc_fid,
 			   uint64_t x1,
 			   uint64_t x2,
 			   uint64_t x3,
@@ -138,11 +138,11 @@ uint64_t tegra_sip_handler(uint32_t smc_fid,
 
 /* Define a runtime service descriptor for fast SMC calls */
 DECLARE_RT_SVC(
-	tegra_sip_fast,
+	tegra132_sip_fast,
 
 	OEN_SIP_START,
 	OEN_SIP_END,
 	SMC_TYPE_FAST,
 	NULL,
-	tegra_sip_handler
+	tegra132_sip_handler
 );

plat/nvidia/tegra/soc/t132/platform_t132.mk

@@ -43,5 +43,6 @@ $(eval $(call add_define,PLATFORM_MAX_CPUS_PER_CLUSTER))
 BL31_SOURCES		+=	lib/cpus/aarch64/denver.S		\
 				${COMMON_DIR}/drivers/flowctrl/flowctrl.c	\
 				${SOC_DIR}/plat_psci_handlers.c		\
+				${SOC_DIR}/plat_sip_calls.c		\
 				${SOC_DIR}/plat_setup.c			\
 				${SOC_DIR}/plat_secondary.c

plat/nvidia/tegra/soc/t210/plat_sip_calls.c

@@ -0,0 +1,114 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * 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.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
+ */
+
+#include <arch.h>
+#include <arch_helpers.h>
+#include <assert.h>
+#include <bl_common.h>
+#include <context_mgmt.h>
+#include <debug.h>
+#include <errno.h>
+#include <memctrl.h>
+#include <runtime_svc.h>
+#include <tegra_private.h>
+
+/*******************************************************************************
+ * Tegra210 SiP SMCs
+ ******************************************************************************/
+#define TEGRA_SIP_NEW_VIDEOMEM_REGION		0x82000003
+
+/*******************************************************************************
+ * This function is responsible for handling all SiP calls from the NS world
+ ******************************************************************************/
+uint64_t tegra210_sip_handler(uint32_t smc_fid,
+			   uint64_t x1,
+			   uint64_t x2,
+			   uint64_t x3,
+			   uint64_t x4,
+			   void *cookie,
+			   void *handle,
+			   uint64_t flags)
+{
+	uint32_t ns;
+	int err;
+
+	/* Determine which security state this SMC originated from */
+	ns = is_caller_non_secure(flags);
+	if (!ns)
+		SMC_RET1(handle, SMC_UNK);
+
+	switch (smc_fid) {
+
+	case TEGRA_SIP_NEW_VIDEOMEM_REGION:
+
+		/* clean up the high bits */
+		x1 = (uint32_t)x1;
+		x2 = (uint32_t)x2;
+
+		/*
+		 * Check if Video Memory overlaps TZDRAM (contains bl31/bl32)
+		 * or falls outside of the valid DRAM range
+		 */
+		err = bl31_check_ns_address(x1, x2);
+		if (err)
+			SMC_RET1(handle, err);
+
+		/*
+		 * Check if Video Memory is aligned to 1MB.
+		 */
+		if ((x1 & 0xFFFFF) || (x2 & 0xFFFFF)) {
+			ERROR("Unaligned Video Memory base address!\n");
+			SMC_RET1(handle, -ENOTSUP);
+		}
+
+		/* new video memory carveout settings */
+		tegra_memctrl_videomem_setup(x1, x2);
+
+		SMC_RET1(handle, 0);
+		break;
+
+	default:
+		ERROR("%s: unhandled SMC (0x%x)\n", __func__, smc_fid);
+		break;
+	}
+
+	SMC_RET1(handle, SMC_UNK);
+}
+
+/* Define a runtime service descriptor for fast SMC calls */
+DECLARE_RT_SVC(
+	tegra210_sip_fast,
+
+	OEN_SIP_START,
+	OEN_SIP_END,
+	SMC_TYPE_FAST,
+	NULL,
+	tegra210_sip_handler
+);

plat/nvidia/tegra/soc/t210/platform_t210.mk

@@ -56,6 +56,7 @@ BL31_SOURCES		+=	lib/cpus/aarch64/cortex_a53.S		\
 				lib/cpus/aarch64/cortex_a57.S		\
 				${COMMON_DIR}/drivers/flowctrl/flowctrl.c	\
 				${SOC_DIR}/plat_psci_handlers.c		\
+				${SOC_DIR}/plat_sip_calls.c		\
 				${SOC_DIR}/plat_setup.c			\
 				${SOC_DIR}/plat_secondary.c