diff --git a/plat/nvidia/tegra/soc/t186/drivers/smmu/smmu.c b/plat/nvidia/tegra/soc/t186/drivers/smmu/smmu.c
new file mode 100644
index 0000000..2940f58
--- /dev/null
+++ b/plat/nvidia/tegra/soc/t186/drivers/smmu/smmu.c
@@ -0,0 +1,466 @@
+/*
+ * Copyright (c) 2016, 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 <assert.h>
+#include <debug.h>
+#include <memctrl_v2.h>
+#include <smmu.h>
+
+typedef struct smmu_regs {
+	uint32_t reg;
+	uint32_t val;
+} smmu_regs_t;
+
+#define mc_make_sid_override_cfg(name) \
+	{ \
+		.reg = TEGRA_MC_STREAMID_BASE + MC_STREAMID_OVERRIDE_CFG_ ## name, \
+		.val = 0x00000000, \
+	}
+
+#define mc_make_sid_security_cfg(name) \
+	{ \
+		.reg = TEGRA_MC_STREAMID_BASE + MC_STREAMID_SECURITY_CFG_ ## name, \
+		.val = 0x00000000, \
+	}
+
+#define smmu_make_gnsr0_sec_cfg(name) \
+	{ \
+		.reg = TEGRA_SMMU_BASE + SMMU_GNSR0_ ## name, \
+		.val = 0x00000000, \
+	}
+
+/*
+ * On ARM-SMMU, conditional offset to access secure aliases of non-secure registers
+ * is 0x400. So, add it to register address
+ */
+#define smmu_make_gnsr0_nsec_cfg(name) \
+	{ \
+		.reg = TEGRA_SMMU_BASE + 0x400 + SMMU_GNSR0_ ## name, \
+		.val = 0x00000000, \
+	}
+
+#define smmu_make_gnsr0_smr_cfg(n) \
+	{ \
+		.reg = TEGRA_SMMU_BASE + SMMU_GNSR0_SMR ## n, \
+		.val = 0x00000000, \
+	}
+
+#define smmu_make_gnsr0_s2cr_cfg(n) \
+	{ \
+		.reg = TEGRA_SMMU_BASE + SMMU_GNSR0_S2CR ## n, \
+		.val = 0x00000000, \
+	}
+
+#define smmu_make_gnsr1_cbar_cfg(n) \
+	{ \
+		.reg = TEGRA_SMMU_BASE + (1 << PGSHIFT) + SMMU_GNSR1_CBAR ## n, \
+		.val = 0x00000000, \
+	}
+
+#define smmu_make_gnsr1_cba2r_cfg(n) \
+	{ \
+		.reg = TEGRA_SMMU_BASE + (1 << PGSHIFT) + SMMU_GNSR1_CBA2R ## n, \
+		.val = 0x00000000, \
+	}
+
+#define make_smmu_cb_cfg(name, n) \
+	{ \
+		.reg = TEGRA_SMMU_BASE + (CB_SIZE >> 1) + (n * (1 << PGSHIFT)) \
+			+ SMMU_CBn_ ## name, \
+		.val = 0x00000000, \
+	}
+
+#define smmu_make_smrg_group(n)	\
+	smmu_make_gnsr0_smr_cfg(n),	\
+	smmu_make_gnsr0_s2cr_cfg(n),	\
+	smmu_make_gnsr1_cbar_cfg(n),	\
+	smmu_make_gnsr1_cba2r_cfg(n)	/* don't put "," here. */
+
+#define smmu_make_cb_group(n)		\
+	make_smmu_cb_cfg(SCTLR, n),	\
+	make_smmu_cb_cfg(TCR2, n),	\
+	make_smmu_cb_cfg(TTBR0_LO, n),	\
+	make_smmu_cb_cfg(TTBR0_HI, n),	\
+	make_smmu_cb_cfg(TCR, n),	\
+	make_smmu_cb_cfg(PRRR_MAIR0, n),\
+	make_smmu_cb_cfg(FSR, n),	\
+	make_smmu_cb_cfg(FAR_LO, n),	\
+	make_smmu_cb_cfg(FAR_HI, n),	\
+	make_smmu_cb_cfg(FSYNR0, n)	/* don't put "," here. */
+
+#define smmu_bypass_cfg \
+	{ \
+		.reg = TEGRA_MC_BASE + MC_SMMU_BYPASS_CONFIG, \
+		.val = 0x00000000, \
+	}
+
+#define _START_OF_TABLE_ \
+	{ \
+		.reg = 0xCAFE05C7, \
+		.val = 0x00000000, \
+	}
+
+#define _END_OF_TABLE_ \
+	{ \
+		.reg = 0xFFFFFFFF, \
+		.val = 0xFFFFFFFF, \
+	}
+
+static smmu_regs_t smmu_ctx_regs[] = {
+	_START_OF_TABLE_,
+	mc_make_sid_security_cfg(SCEW),
+	mc_make_sid_security_cfg(AFIR),
+	mc_make_sid_security_cfg(NVDISPLAYR1),
+	mc_make_sid_security_cfg(XUSB_DEVR),
+	mc_make_sid_security_cfg(VICSRD1),
+	mc_make_sid_security_cfg(NVENCSWR),
+	mc_make_sid_security_cfg(TSECSRDB),
+	mc_make_sid_security_cfg(AXISW),
+	mc_make_sid_security_cfg(SDMMCWAB),
+	mc_make_sid_security_cfg(AONDMAW),
+	mc_make_sid_security_cfg(GPUSWR2),
+	mc_make_sid_security_cfg(SATAW),
+	mc_make_sid_security_cfg(UFSHCW),
+	mc_make_sid_security_cfg(AFIW),
+	mc_make_sid_security_cfg(SDMMCR),
+	mc_make_sid_security_cfg(SCEDMAW),
+	mc_make_sid_security_cfg(UFSHCR),
+	mc_make_sid_security_cfg(SDMMCWAA),
+	mc_make_sid_security_cfg(APEDMAW),
+	mc_make_sid_security_cfg(SESWR),
+	mc_make_sid_security_cfg(MPCORER),
+	mc_make_sid_security_cfg(PTCR),
+	mc_make_sid_security_cfg(BPMPW),
+	mc_make_sid_security_cfg(ETRW),
+	mc_make_sid_security_cfg(GPUSRD),
+	mc_make_sid_security_cfg(VICSWR),
+	mc_make_sid_security_cfg(SCEDMAR),
+	mc_make_sid_security_cfg(HDAW),
+	mc_make_sid_security_cfg(ISPWA),
+	mc_make_sid_security_cfg(EQOSW),
+	mc_make_sid_security_cfg(XUSB_HOSTW),
+	mc_make_sid_security_cfg(TSECSWR),
+	mc_make_sid_security_cfg(SDMMCRAA),
+	mc_make_sid_security_cfg(APER),
+	mc_make_sid_security_cfg(VIW),
+	mc_make_sid_security_cfg(APEW),
+	mc_make_sid_security_cfg(AXISR),
+	mc_make_sid_security_cfg(SDMMCW),
+	mc_make_sid_security_cfg(BPMPDMAW),
+	mc_make_sid_security_cfg(ISPRA),
+	mc_make_sid_security_cfg(NVDECSWR),
+	mc_make_sid_security_cfg(XUSB_DEVW),
+	mc_make_sid_security_cfg(NVDECSRD),
+	mc_make_sid_security_cfg(MPCOREW),
+	mc_make_sid_security_cfg(NVDISPLAYR),
+	mc_make_sid_security_cfg(BPMPDMAR),
+	mc_make_sid_security_cfg(NVJPGSWR),
+	mc_make_sid_security_cfg(NVDECSRD1),
+	mc_make_sid_security_cfg(TSECSRD),
+	mc_make_sid_security_cfg(NVJPGSRD),
+	mc_make_sid_security_cfg(SDMMCWA),
+	mc_make_sid_security_cfg(SCER),
+	mc_make_sid_security_cfg(XUSB_HOSTR),
+	mc_make_sid_security_cfg(VICSRD),
+	mc_make_sid_security_cfg(AONDMAR),
+	mc_make_sid_security_cfg(AONW),
+	mc_make_sid_security_cfg(SDMMCRA),
+	mc_make_sid_security_cfg(HOST1XDMAR),
+	mc_make_sid_security_cfg(EQOSR),
+	mc_make_sid_security_cfg(SATAR),
+	mc_make_sid_security_cfg(BPMPR),
+	mc_make_sid_security_cfg(HDAR),
+	mc_make_sid_security_cfg(SDMMCRAB),
+	mc_make_sid_security_cfg(ETRR),
+	mc_make_sid_security_cfg(AONR),
+	mc_make_sid_security_cfg(APEDMAR),
+	mc_make_sid_security_cfg(SESRD),
+	mc_make_sid_security_cfg(NVENCSRD),
+	mc_make_sid_security_cfg(GPUSWR),
+	mc_make_sid_security_cfg(TSECSWRB),
+	mc_make_sid_security_cfg(ISPWB),
+	mc_make_sid_security_cfg(GPUSRD2),
+	mc_make_sid_override_cfg(APER),
+	mc_make_sid_override_cfg(VICSRD),
+	mc_make_sid_override_cfg(NVENCSRD),
+	mc_make_sid_override_cfg(NVJPGSWR),
+	mc_make_sid_override_cfg(AONW),
+	mc_make_sid_override_cfg(BPMPR),
+	mc_make_sid_override_cfg(BPMPW),
+	mc_make_sid_override_cfg(HDAW),
+	mc_make_sid_override_cfg(NVDISPLAYR1),
+	mc_make_sid_override_cfg(APEDMAR),
+	mc_make_sid_override_cfg(AFIR),
+	mc_make_sid_override_cfg(AXISR),
+	mc_make_sid_override_cfg(VICSRD1),
+	mc_make_sid_override_cfg(TSECSRD),
+	mc_make_sid_override_cfg(BPMPDMAW),
+	mc_make_sid_override_cfg(MPCOREW),
+	mc_make_sid_override_cfg(XUSB_HOSTR),
+	mc_make_sid_override_cfg(GPUSWR),
+	mc_make_sid_override_cfg(XUSB_DEVR),
+	mc_make_sid_override_cfg(UFSHCW),
+	mc_make_sid_override_cfg(XUSB_HOSTW),
+	mc_make_sid_override_cfg(SDMMCWAB),
+	mc_make_sid_override_cfg(SATAW),
+	mc_make_sid_override_cfg(SCEDMAR),
+	mc_make_sid_override_cfg(HOST1XDMAR),
+	mc_make_sid_override_cfg(SDMMCWA),
+	mc_make_sid_override_cfg(APEDMAW),
+	mc_make_sid_override_cfg(SESWR),
+	mc_make_sid_override_cfg(AXISW),
+	mc_make_sid_override_cfg(AONDMAW),
+	mc_make_sid_override_cfg(TSECSWRB),
+	mc_make_sid_override_cfg(MPCORER),
+	mc_make_sid_override_cfg(ISPWB),
+	mc_make_sid_override_cfg(AONR),
+	mc_make_sid_override_cfg(BPMPDMAR),
+	mc_make_sid_override_cfg(HDAR),
+	mc_make_sid_override_cfg(SDMMCRA),
+	mc_make_sid_override_cfg(ETRW),
+	mc_make_sid_override_cfg(GPUSWR2),
+	mc_make_sid_override_cfg(EQOSR),
+	mc_make_sid_override_cfg(TSECSWR),
+	mc_make_sid_override_cfg(ETRR),
+	mc_make_sid_override_cfg(NVDECSRD),
+	mc_make_sid_override_cfg(TSECSRDB),
+	mc_make_sid_override_cfg(SDMMCRAA),
+	mc_make_sid_override_cfg(NVDECSRD1),
+	mc_make_sid_override_cfg(SDMMCR),
+	mc_make_sid_override_cfg(NVJPGSRD),
+	mc_make_sid_override_cfg(SCEDMAW),
+	mc_make_sid_override_cfg(SDMMCWAA),
+	mc_make_sid_override_cfg(APEW),
+	mc_make_sid_override_cfg(AONDMAR),
+	mc_make_sid_override_cfg(PTCR),
+	mc_make_sid_override_cfg(SCER),
+	mc_make_sid_override_cfg(ISPRA),
+	mc_make_sid_override_cfg(ISPWA),
+	mc_make_sid_override_cfg(VICSWR),
+	mc_make_sid_override_cfg(SESRD),
+	mc_make_sid_override_cfg(SDMMCW),
+	mc_make_sid_override_cfg(SDMMCRAB),
+	mc_make_sid_override_cfg(EQOSW),
+	mc_make_sid_override_cfg(GPUSRD2),
+	mc_make_sid_override_cfg(SCEW),
+	mc_make_sid_override_cfg(GPUSRD),
+	mc_make_sid_override_cfg(NVDECSWR),
+	mc_make_sid_override_cfg(XUSB_DEVW),
+	mc_make_sid_override_cfg(SATAR),
+	mc_make_sid_override_cfg(NVDISPLAYR),
+	mc_make_sid_override_cfg(VIW),
+	mc_make_sid_override_cfg(UFSHCR),
+	mc_make_sid_override_cfg(NVENCSWR),
+	mc_make_sid_override_cfg(AFIW),
+	smmu_make_gnsr0_nsec_cfg(CR0),
+	smmu_make_gnsr0_sec_cfg(IDR0),
+	smmu_make_gnsr0_sec_cfg(IDR1),
+	smmu_make_gnsr0_sec_cfg(IDR2),
+	smmu_make_gnsr0_nsec_cfg(GFSR),
+	smmu_make_gnsr0_nsec_cfg(GFSYNR0),
+	smmu_make_gnsr0_nsec_cfg(GFSYNR1),
+	smmu_make_gnsr0_nsec_cfg(TLBGSTATUS),
+	smmu_make_gnsr0_nsec_cfg(PIDR2),
+	smmu_make_smrg_group(0),
+	smmu_make_smrg_group(1),
+	smmu_make_smrg_group(2),
+	smmu_make_smrg_group(3),
+	smmu_make_smrg_group(4),
+	smmu_make_smrg_group(5),
+	smmu_make_smrg_group(6),
+	smmu_make_smrg_group(7),
+	smmu_make_smrg_group(8),
+	smmu_make_smrg_group(9),
+	smmu_make_smrg_group(10),
+	smmu_make_smrg_group(11),
+	smmu_make_smrg_group(12),
+	smmu_make_smrg_group(13),
+	smmu_make_smrg_group(14),
+	smmu_make_smrg_group(15),
+	smmu_make_smrg_group(16),
+	smmu_make_smrg_group(17),
+	smmu_make_smrg_group(18),
+	smmu_make_smrg_group(19),
+	smmu_make_smrg_group(20),
+	smmu_make_smrg_group(21),
+	smmu_make_smrg_group(22),
+	smmu_make_smrg_group(23),
+	smmu_make_smrg_group(24),
+	smmu_make_smrg_group(25),
+	smmu_make_smrg_group(26),
+	smmu_make_smrg_group(27),
+	smmu_make_smrg_group(28),
+	smmu_make_smrg_group(29),
+	smmu_make_smrg_group(30),
+	smmu_make_smrg_group(31),
+	smmu_make_smrg_group(32),
+	smmu_make_smrg_group(33),
+	smmu_make_smrg_group(34),
+	smmu_make_smrg_group(35),
+	smmu_make_smrg_group(36),
+	smmu_make_smrg_group(37),
+	smmu_make_smrg_group(38),
+	smmu_make_smrg_group(39),
+	smmu_make_smrg_group(40),
+	smmu_make_smrg_group(41),
+	smmu_make_smrg_group(42),
+	smmu_make_smrg_group(43),
+	smmu_make_smrg_group(44),
+	smmu_make_smrg_group(45),
+	smmu_make_smrg_group(46),
+	smmu_make_smrg_group(47),
+	smmu_make_smrg_group(48),
+	smmu_make_smrg_group(49),
+	smmu_make_smrg_group(50),
+	smmu_make_smrg_group(51),
+	smmu_make_smrg_group(52),
+	smmu_make_smrg_group(53),
+	smmu_make_smrg_group(54),
+	smmu_make_smrg_group(55),
+	smmu_make_smrg_group(56),
+	smmu_make_smrg_group(57),
+	smmu_make_smrg_group(58),
+	smmu_make_smrg_group(59),
+	smmu_make_smrg_group(60),
+	smmu_make_smrg_group(61),
+	smmu_make_smrg_group(62),
+	smmu_make_smrg_group(63),
+	smmu_make_cb_group(0),
+	smmu_make_cb_group(1),
+	smmu_make_cb_group(2),
+	smmu_make_cb_group(3),
+	smmu_make_cb_group(4),
+	smmu_make_cb_group(5),
+	smmu_make_cb_group(6),
+	smmu_make_cb_group(7),
+	smmu_make_cb_group(8),
+	smmu_make_cb_group(9),
+	smmu_make_cb_group(10),
+	smmu_make_cb_group(11),
+	smmu_make_cb_group(12),
+	smmu_make_cb_group(13),
+	smmu_make_cb_group(14),
+	smmu_make_cb_group(15),
+	smmu_make_cb_group(16),
+	smmu_make_cb_group(17),
+	smmu_make_cb_group(18),
+	smmu_make_cb_group(19),
+	smmu_make_cb_group(20),
+	smmu_make_cb_group(21),
+	smmu_make_cb_group(22),
+	smmu_make_cb_group(23),
+	smmu_make_cb_group(24),
+	smmu_make_cb_group(25),
+	smmu_make_cb_group(26),
+	smmu_make_cb_group(27),
+	smmu_make_cb_group(28),
+	smmu_make_cb_group(29),
+	smmu_make_cb_group(30),
+	smmu_make_cb_group(31),
+	smmu_make_cb_group(32),
+	smmu_make_cb_group(33),
+	smmu_make_cb_group(34),
+	smmu_make_cb_group(35),
+	smmu_make_cb_group(36),
+	smmu_make_cb_group(37),
+	smmu_make_cb_group(38),
+	smmu_make_cb_group(39),
+	smmu_make_cb_group(40),
+	smmu_make_cb_group(41),
+	smmu_make_cb_group(42),
+	smmu_make_cb_group(43),
+	smmu_make_cb_group(44),
+	smmu_make_cb_group(45),
+	smmu_make_cb_group(46),
+	smmu_make_cb_group(47),
+	smmu_make_cb_group(48),
+	smmu_make_cb_group(49),
+	smmu_make_cb_group(50),
+	smmu_make_cb_group(51),
+	smmu_make_cb_group(52),
+	smmu_make_cb_group(53),
+	smmu_make_cb_group(54),
+	smmu_make_cb_group(55),
+	smmu_make_cb_group(56),
+	smmu_make_cb_group(57),
+	smmu_make_cb_group(58),
+	smmu_make_cb_group(59),
+	smmu_make_cb_group(60),
+	smmu_make_cb_group(61),
+	smmu_make_cb_group(62),
+	smmu_make_cb_group(63),
+	smmu_bypass_cfg,	/* TBU settings */
+	_END_OF_TABLE_,
+};
+
+/*
+ * Save SMMU settings before "System Suspend"
+ */
+void tegra_smmu_save_context(void)
+{
+	uint32_t i;
+#if DEBUG
+	uint32_t reg_id1, pgshift, cb_size;
+
+	/* sanity check SMMU settings c*/
+	reg_id1 = mmio_read_32((TEGRA_SMMU_BASE + SMMU_GNSR0_IDR1));
+	pgshift = (reg_id1 & ID1_PAGESIZE) ? 16 : 12;
+	cb_size = (2 << pgshift) * \
+	(1 << (((reg_id1 >> ID1_NUMPAGENDXB_SHIFT) & ID1_NUMPAGENDXB_MASK) + 1));
+
+	assert(!((pgshift != PGSHIFT) || (cb_size != CB_SIZE)));
+#endif
+
+	/* index of _END_OF_TABLE_ */
+	smmu_ctx_regs[0].val = ARRAY_SIZE(smmu_ctx_regs) - 1;
+
+	/* save SMMU register values */
+	for (i = 1; i < ARRAY_SIZE(smmu_ctx_regs) - 1; i++)
+		smmu_ctx_regs[i].val = mmio_read_32(smmu_ctx_regs[i].reg);
+
+	/* save the SMMU table address */
+	mmio_write_32(TEGRA_SCRATCH_BASE + SECURE_SCRATCH_RSV11_LO,
+		(uint32_t)(unsigned long)smmu_ctx_regs);
+	mmio_write_32(TEGRA_SCRATCH_BASE + SECURE_SCRATCH_RSV11_HI,
+		(uint32_t)(((unsigned long)smmu_ctx_regs) >> 32));
+}
+
+/*
+ * Init SMMU during boot or "System Suspend" exit
+ */
+void tegra_smmu_init(void)
+{
+	uint32_t val;
+
+	/* Program the SMMU pagesize */
+	val = tegra_smmu_read_32(SMMU_GSR0_SECURE_ACR);
+	val |= SMMU_GSR0_PGSIZE_64K;
+	tegra_smmu_write_32(SMMU_GSR0_SECURE_ACR, val);
+}