diff --git a/plat/amlogic/gxbb/aarch64/gxbb_helpers.S b/plat/amlogic/gxbb/aarch64/gxbb_helpers.S
new file mode 100644
index 0000000..760d6c4
--- /dev/null
+++ b/plat/amlogic/gxbb/aarch64/gxbb_helpers.S
@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch.h>
+#include <asm_macros.S>
+#include <assert_macros.S>
+#include <platform_def.h>
+
+	.globl	plat_crash_console_flush
+	.globl	plat_crash_console_init
+	.globl	plat_crash_console_putc
+	.globl	platform_mem_init
+	.globl	plat_is_my_cpu_primary
+	.globl	plat_my_core_pos
+	.globl	plat_reset_handler
+	.globl	plat_gxbb_calc_core_pos
+
+	/* -----------------------------------------------------
+	 * unsigned int plat_my_core_pos(void);
+	 * -----------------------------------------------------
+	 */
+func plat_my_core_pos
+	mrs	x0, mpidr_el1
+	b	plat_gxbb_calc_core_pos
+endfunc plat_my_core_pos
+
+	/* -----------------------------------------------------
+	 *  unsigned int plat_gxbb_calc_core_pos(u_register_t mpidr);
+	 * -----------------------------------------------------
+	 */
+func plat_gxbb_calc_core_pos
+	and	x0, x0, #MPIDR_CPU_MASK
+	ret
+endfunc plat_gxbb_calc_core_pos
+
+	/* -----------------------------------------------------
+	 * unsigned int plat_is_my_cpu_primary(void);
+	 * -----------------------------------------------------
+	 */
+func plat_is_my_cpu_primary
+	mrs	x0, mpidr_el1
+	and	x0, x0, #(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK)
+	cmp	x0, #GXBB_PRIMARY_CPU
+	cset	w0, eq
+	ret
+endfunc plat_is_my_cpu_primary
+
+	/* ---------------------------------------------
+	 * void platform_mem_init(void);
+	 * ---------------------------------------------
+	 */
+func platform_mem_init
+	ret
+endfunc platform_mem_init
+
+	/* ---------------------------------------------
+	 * int plat_crash_console_init(void)
+	 * ---------------------------------------------
+	 */
+func plat_crash_console_init
+	mov_imm	x0, GXBB_UART0_AO_BASE
+	mov_imm	x1, GXBB_UART0_AO_CLK_IN_HZ
+	mov_imm	x2, GXBB_UART_BAUDRATE
+	b	console_meson_init
+endfunc plat_crash_console_init
+
+	/* ---------------------------------------------
+	 * int plat_crash_console_putc(int c)
+	 * Clobber list : x1, x2
+	 * ---------------------------------------------
+	 */
+func plat_crash_console_putc
+	mov_imm	x1, GXBB_UART0_AO_BASE
+	b	console_meson_core_putc
+endfunc plat_crash_console_putc
+
+	/* ---------------------------------------------
+	 * int plat_crash_console_flush()
+	 * Out : return -1 on error else return 0.
+	 * Clobber list : x0, x1
+	 * ---------------------------------------------
+	 */
+func plat_crash_console_flush
+	mov_imm	x0, GXBB_UART0_AO_BASE
+	b	console_meson_core_flush
+endfunc plat_crash_console_flush
+
+	/* ---------------------------------------------
+	 * void plat_reset_handler(void);
+	 * ---------------------------------------------
+	 */
+func plat_reset_handler
+	ret
+endfunc plat_reset_handler
diff --git a/plat/amlogic/gxbb/gxbb_bl31_setup.c b/plat/amlogic/gxbb/gxbb_bl31_setup.c
new file mode 100644
index 0000000..b867a58
--- /dev/null
+++ b/plat/amlogic/gxbb/gxbb_bl31_setup.c
@@ -0,0 +1,146 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+
+#include <platform_def.h>
+
+#include <common/bl_common.h>
+#include <common/interrupt_props.h>
+#include <drivers/arm/gicv2.h>
+#include <lib/xlat_tables/xlat_mmu_helpers.h>
+#include <plat/common/platform.h>
+
+#include "gxbb_private.h"
+
+/*
+ * Placeholder variables for copying the arguments that have been passed to
+ * BL31 from BL2.
+ */
+static entry_point_info_t bl33_image_ep_info;
+
+/*******************************************************************************
+ * Return a pointer to the 'entry_point_info' structure of the next image for
+ * the security state specified. BL33 corresponds to the non-secure image type
+ * while BL32 corresponds to the secure image type. A NULL pointer is returned
+ * if the image does not exist.
+ ******************************************************************************/
+entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type)
+{
+	entry_point_info_t *next_image_info;
+
+	assert(type == NON_SECURE);
+
+	next_image_info = &bl33_image_ep_info;
+
+	/* None of the images can have 0x0 as the entrypoint. */
+	if (next_image_info->pc != 0U) {
+		return next_image_info;
+	} else {
+		return NULL;
+	}
+}
+
+/*******************************************************************************
+ * Perform any BL31 early platform setup. Here is an opportunity to copy
+ * parameters passed by the calling EL (S-EL1 in BL2 & S-EL3 in BL1) before
+ * they are lost (potentially). This needs to be done before the MMU is
+ * initialized so that the memory layout can be used while creating page
+ * tables. BL2 has flushed this information to memory, so we are guaranteed
+ * to pick up good data.
+ ******************************************************************************/
+struct gxbb_bl31_param {
+	param_header_t h;
+	image_info_t *bl31_image_info;
+	entry_point_info_t *bl32_ep_info;
+	image_info_t *bl32_image_info;
+	entry_point_info_t *bl33_ep_info;
+	image_info_t *bl33_image_info;
+};
+
+void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
+				u_register_t arg2, u_register_t arg3)
+{
+	struct gxbb_bl31_param *from_bl2;
+
+	/* Initialize the console to provide early debug support */
+	gxbb_console_init();
+
+	/*
+	 * In debug builds, we pass a special value in 'arg1' to verify platform
+	 * parameters from BL2 to BL31. In release builds it's not used.
+	 */
+	assert(arg1 == GXBB_BL31_PLAT_PARAM_VAL);
+
+	/* Check that params passed from BL2 are not NULL. */
+	from_bl2 = (struct gxbb_bl31_param *) arg0;
+
+	/* Check params passed from BL2 are not NULL. */
+	assert(from_bl2 != NULL);
+	assert(from_bl2->h.type == PARAM_BL31);
+	assert(from_bl2->h.version >= VERSION_1);
+
+	/*
+	 * Copy BL33 entry point information. It is stored in Secure RAM, in
+	 * BL2's address space.
+	 */
+	bl33_image_ep_info = *from_bl2->bl33_ep_info;
+
+	if (bl33_image_ep_info.pc == 0U) {
+		ERROR("BL31: BL33 entrypoint not obtained from BL2\n");
+		panic();
+	}
+}
+
+void bl31_plat_arch_setup(void)
+{
+	gxbb_setup_page_tables();
+
+	enable_mmu_el3(0);
+}
+
+/*******************************************************************************
+ * GICv2 driver setup information
+ ******************************************************************************/
+static const interrupt_prop_t gxbb_interrupt_props[] = {
+	INTR_PROP_DESC(IRQ_SEC_PHY_TIMER, GIC_HIGHEST_SEC_PRIORITY,
+		       GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
+	INTR_PROP_DESC(IRQ_SEC_SGI_0, GIC_HIGHEST_SEC_PRIORITY,
+		       GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
+	INTR_PROP_DESC(IRQ_SEC_SGI_1, GIC_HIGHEST_SEC_PRIORITY,
+		       GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
+	INTR_PROP_DESC(IRQ_SEC_SGI_2, GIC_HIGHEST_SEC_PRIORITY,
+		       GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
+	INTR_PROP_DESC(IRQ_SEC_SGI_3, GIC_HIGHEST_SEC_PRIORITY,
+		       GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
+	INTR_PROP_DESC(IRQ_SEC_SGI_4, GIC_HIGHEST_SEC_PRIORITY,
+		       GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
+	INTR_PROP_DESC(IRQ_SEC_SGI_5, GIC_HIGHEST_SEC_PRIORITY,
+		       GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
+	INTR_PROP_DESC(IRQ_SEC_SGI_6, GIC_HIGHEST_SEC_PRIORITY,
+		       GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
+	INTR_PROP_DESC(IRQ_SEC_SGI_7, GIC_HIGHEST_SEC_PRIORITY,
+		       GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
+};
+
+static const gicv2_driver_data_t gxbb_gic_data = {
+	.gicd_base = GXBB_GICD_BASE,
+	.gicc_base = GXBB_GICC_BASE,
+	.interrupt_props = gxbb_interrupt_props,
+	.interrupt_props_num = ARRAY_SIZE(gxbb_interrupt_props),
+};
+
+void bl31_platform_setup(void)
+{
+	mhu_secure_init();
+
+	gicv2_driver_init(&gxbb_gic_data);
+	gicv2_distif_init();
+	gicv2_pcpu_distif_init();
+	gicv2_cpuif_enable();
+
+	gxbb_thermal_unknown();
+}
diff --git a/plat/amlogic/gxbb/gxbb_common.c b/plat/amlogic/gxbb/gxbb_common.c
new file mode 100644
index 0000000..eb688f7
--- /dev/null
+++ b/plat/amlogic/gxbb/gxbb_common.c
@@ -0,0 +1,145 @@
+/*
+ * Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <stdint.h>
+
+#include <platform_def.h>
+
+#include <bl31/interrupt_mgmt.h>
+#include <common/bl_common.h>
+#include <common/debug.h>
+#include <common/ep_info.h>
+#include <drivers/amlogic/meson_console.h>
+#include <lib/mmio.h>
+#include <lib/xlat_tables/xlat_tables_v2.h>
+
+/*******************************************************************************
+ * Platform memory map regions
+ ******************************************************************************/
+#define MAP_NSDRAM0	MAP_REGION_FLAT(GXBB_NSDRAM0_BASE,		\
+					GXBB_NSDRAM0_SIZE,		\
+					MT_MEMORY | MT_RW | MT_NS)
+
+#define MAP_NSDRAM1	MAP_REGION_FLAT(GXBB_NSDRAM1_BASE,		\
+					GXBB_NSDRAM1_SIZE,		\
+					MT_MEMORY | MT_RW | MT_NS)
+
+#define MAP_SEC_DEVICE0	MAP_REGION_FLAT(GXBB_SEC_DEVICE0_BASE,		\
+					GXBB_SEC_DEVICE0_SIZE,		\
+					MT_DEVICE | MT_RW | MT_SECURE)
+
+#define MAP_SEC_DEVICE1	MAP_REGION_FLAT(GXBB_SEC_DEVICE1_BASE,		\
+					GXBB_SEC_DEVICE1_SIZE,		\
+					MT_DEVICE | MT_RW | MT_SECURE)
+
+#define MAP_TZRAM	MAP_REGION_FLAT(GXBB_TZRAM_BASE,		\
+					GXBB_TZRAM_SIZE,		\
+					MT_DEVICE | MT_RW | MT_SECURE)
+
+#define MAP_SEC_DEVICE2	MAP_REGION_FLAT(GXBB_SEC_DEVICE2_BASE,		\
+					GXBB_SEC_DEVICE2_SIZE,		\
+					MT_DEVICE | MT_RW | MT_SECURE)
+
+#define MAP_SEC_DEVICE3	MAP_REGION_FLAT(GXBB_SEC_DEVICE3_BASE,		\
+					GXBB_SEC_DEVICE3_SIZE,		\
+					MT_DEVICE | MT_RW | MT_SECURE)
+
+static const mmap_region_t gxbb_mmap[] = {
+	MAP_NSDRAM0,
+	MAP_NSDRAM1,
+	MAP_SEC_DEVICE0,
+	MAP_SEC_DEVICE1,
+	MAP_TZRAM,
+	MAP_SEC_DEVICE2,
+	MAP_SEC_DEVICE3,
+	{0}
+};
+
+/*******************************************************************************
+ * Per-image regions
+ ******************************************************************************/
+#define MAP_BL31	MAP_REGION_FLAT(BL31_BASE,			\
+				BL31_END - BL31_BASE,			\
+				MT_MEMORY | MT_RW | MT_SECURE)
+
+#define MAP_BL_CODE	MAP_REGION_FLAT(BL_CODE_BASE,			\
+				BL_CODE_END - BL_CODE_BASE,		\
+				MT_CODE | MT_SECURE)
+
+#define MAP_BL_RO_DATA	MAP_REGION_FLAT(BL_RO_DATA_BASE,		\
+				BL_RO_DATA_END - BL_RO_DATA_BASE,	\
+				MT_RO_DATA | MT_SECURE)
+
+#define MAP_BL_COHERENT	MAP_REGION_FLAT(BL_COHERENT_RAM_BASE,		\
+				BL_COHERENT_RAM_END - BL_COHERENT_RAM_BASE, \
+				MT_DEVICE | MT_RW | MT_SECURE)
+
+/*******************************************************************************
+ * Function that sets up the translation tables.
+ ******************************************************************************/
+void gxbb_setup_page_tables(void)
+{
+#if IMAGE_BL31
+	const mmap_region_t gxbb_bl_mmap[] = {
+		MAP_BL31,
+		MAP_BL_CODE,
+		MAP_BL_RO_DATA,
+#if USE_COHERENT_MEM
+		MAP_BL_COHERENT,
+#endif
+		{0}
+	};
+#endif
+
+	mmap_add(gxbb_bl_mmap);
+
+	mmap_add(gxbb_mmap);
+
+	init_xlat_tables();
+}
+
+/*******************************************************************************
+ * Function that sets up the console
+ ******************************************************************************/
+static console_meson_t gxbb_console;
+
+void gxbb_console_init(void)
+{
+	int rc = console_meson_register(GXBB_UART0_AO_BASE,
+					GXBB_UART0_AO_CLK_IN_HZ,
+					GXBB_UART_BAUDRATE,
+					&gxbb_console);
+	if (rc == 0) {
+		/*
+		 * The crash console doesn't use the multi console API, it uses
+		 * the core console functions directly. It is safe to call panic
+		 * and let it print debug information.
+		 */
+		panic();
+	}
+
+	console_set_scope(&gxbb_console.console,
+			  CONSOLE_FLAG_BOOT | CONSOLE_FLAG_RUNTIME);
+}
+
+/*******************************************************************************
+ * Function that returns the system counter frequency
+ ******************************************************************************/
+unsigned int plat_get_syscnt_freq2(void)
+{
+	uint32_t val;
+
+	val = mmio_read_32(GXBB_SYS_CPU_CFG7);
+	val &= 0xFDFFFFFF;
+	mmio_write_32(GXBB_SYS_CPU_CFG7, val);
+
+	val = mmio_read_32(GXBB_AO_TIMESTAMP_CNTL);
+	val &= 0xFFFFFE00;
+	mmio_write_32(GXBB_AO_TIMESTAMP_CNTL, val);
+
+	return GXBB_OSC24M_CLK_IN_HZ;
+}
diff --git a/plat/amlogic/gxbb/gxbb_def.h b/plat/amlogic/gxbb/gxbb_def.h
new file mode 100644
index 0000000..3e27097
--- /dev/null
+++ b/plat/amlogic/gxbb/gxbb_def.h
@@ -0,0 +1,118 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef GXBB_DEF_H
+#define GXBB_DEF_H
+
+#include <lib/utils_def.h>
+
+/*******************************************************************************
+ * System oscillator
+ ******************************************************************************/
+#define GXBB_OSC24M_CLK_IN_HZ			ULL(24000000) /* 24 MHz */
+
+/*******************************************************************************
+ * Memory regions
+ ******************************************************************************/
+#define GXBB_NSDRAM0_BASE			UL(0x01000000)
+#define GXBB_NSDRAM0_SIZE			UL(0x0F000000)
+
+#define GXBB_NSDRAM1_BASE			UL(0x10000000)
+#define GXBB_NSDRAM1_SIZE			UL(0x00100000)
+
+#define BL31_BASE				UL(0x10100000)
+#define BL31_SIZE				UL(0x000C0000)
+#define BL31_LIMIT				(BL31_BASE + BL31_SIZE)
+
+/* Shared memory used for SMC services */
+#define GXBB_SHARE_MEM_INPUT_BASE		UL(0x100FE000)
+#define GXBB_SHARE_MEM_OUTPUT_BASE		UL(0x100FF000)
+
+#define GXBB_SEC_DEVICE0_BASE			UL(0xC0000000)
+#define GXBB_SEC_DEVICE0_SIZE			UL(0x09000000)
+
+#define GXBB_SEC_DEVICE1_BASE			UL(0xD0040000)
+#define GXBB_SEC_DEVICE1_SIZE			UL(0x00008000)
+
+#define GXBB_TZRAM_BASE				UL(0xD9000000)
+#define GXBB_TZRAM_SIZE				UL(0x00014000)
+/* Top 0xC000 bytes (up to 0xD9020000) used by BL2 */
+
+/* Mailboxes */
+#define GXBB_MHU_SECURE_SCP_TO_AP_PAYLOAD	UL(0xD9013800)
+#define GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD	UL(0xD9013A00)
+#define GXBB_PSCI_MAILBOX_BASE			UL(0xD9013F00)
+
+#define GXBB_TZROM_BASE				UL(0xD9040000)
+#define GXBB_TZROM_SIZE				UL(0x00010000)
+
+#define GXBB_SEC_DEVICE2_BASE			UL(0xDA000000)
+#define GXBB_SEC_DEVICE2_SIZE			UL(0x00200000)
+
+#define GXBB_SEC_DEVICE3_BASE			UL(0xDA800000)
+#define GXBB_SEC_DEVICE3_SIZE			UL(0x00200000)
+
+/*******************************************************************************
+ * GIC-400 and interrupt handling related constants
+ ******************************************************************************/
+#define GXBB_GICD_BASE				UL(0xC4301000)
+#define GXBB_GICC_BASE				UL(0xC4302000)
+
+#define IRQ_SEC_PHY_TIMER			29
+
+#define IRQ_SEC_SGI_0				8
+#define IRQ_SEC_SGI_1				9
+#define IRQ_SEC_SGI_2				10
+#define IRQ_SEC_SGI_3				11
+#define IRQ_SEC_SGI_4				12
+#define IRQ_SEC_SGI_5				13
+#define IRQ_SEC_SGI_6				14
+#define IRQ_SEC_SGI_7				15
+
+/*******************************************************************************
+ * UART definitions
+ ******************************************************************************/
+#define GXBB_UART0_AO_BASE			UL(0xC81004C0)
+#define GXBB_UART0_AO_CLK_IN_HZ			GXBB_OSC24M_CLK_IN_HZ
+#define GXBB_UART_BAUDRATE			U(115200)
+
+/*******************************************************************************
+ * Memory-mapped I/O Registers
+ ******************************************************************************/
+#define GXBB_AO_TIMESTAMP_CNTL			UL(0xC81000B4)
+
+#define GXBB_SYS_CPU_CFG7			UL(0xC8834664)
+
+#define GXBB_AO_RTI_STATUS_REG3			UL(0xDA10001C)
+
+#define GXBB_HIU_MAILBOX_SET_0			UL(0xDA83C404)
+#define GXBB_HIU_MAILBOX_STAT_0			UL(0xDA83C408)
+#define GXBB_HIU_MAILBOX_CLR_0			UL(0xDA83C40C)
+#define GXBB_HIU_MAILBOX_SET_3			UL(0xDA83C428)
+#define GXBB_HIU_MAILBOX_STAT_3			UL(0xDA83C42C)
+#define GXBB_HIU_MAILBOX_CLR_3			UL(0xDA83C430)
+
+/*******************************************************************************
+ * System Monitor Call IDs and arguments
+ ******************************************************************************/
+#define GXBB_SM_GET_SHARE_MEM_INPUT_BASE	U(0x82000020)
+#define GXBB_SM_GET_SHARE_MEM_OUTPUT_BASE	U(0x82000021)
+
+#define GXBB_SM_EFUSE_READ			U(0x82000030)
+#define GXBB_SM_EFUSE_USER_MAX			U(0x82000033)
+
+#define GXBB_SM_JTAG_ON				U(0x82000040)
+#define GXBB_SM_JTAG_OFF			U(0x82000041)
+
+#define GXBB_JTAG_STATE_ON			U(0)
+#define GXBB_JTAG_STATE_OFF			U(1)
+
+#define GXBB_JTAG_M3_AO				U(0)
+#define GXBB_JTAG_M3_EE				U(1)
+#define GXBB_JTAG_A53_AO			U(2)
+#define GXBB_JTAG_A53_EE			U(3)
+
+#endif /* GXBB_DEF_H */
diff --git a/plat/amlogic/gxbb/gxbb_efuse.c b/plat/amlogic/gxbb/gxbb_efuse.c
new file mode 100644
index 0000000..edea542
--- /dev/null
+++ b/plat/amlogic/gxbb/gxbb_efuse.c
@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <stdint.h>
+
+#include "gxbb_private.h"
+
+#define EFUSE_BASE	0x140
+#define EFUSE_SIZE	0xC0
+
+uint64_t gxbb_efuse_read(void *dst, uint32_t offset, uint32_t size)
+{
+	if ((uint64_t)(offset + size) > (uint64_t)EFUSE_SIZE)
+		return 0;
+
+	return scpi_efuse_read(dst, offset + EFUSE_BASE, size);
+}
+
+uint64_t gxbb_efuse_user_max(void)
+{
+	return EFUSE_SIZE;
+}
diff --git a/plat/amlogic/gxbb/gxbb_mhu.c b/plat/amlogic/gxbb/gxbb_mhu.c
new file mode 100644
index 0000000..903ef41
--- /dev/null
+++ b/plat/amlogic/gxbb/gxbb_mhu.c
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <platform_def.h>
+
+#include <lib/bakery_lock.h>
+#include <lib/mmio.h>
+
+static DEFINE_BAKERY_LOCK(mhu_lock);
+
+void mhu_secure_message_start(void)
+{
+	bakery_lock_get(&mhu_lock);
+
+	while (mmio_read_32(GXBB_HIU_MAILBOX_STAT_3) != 0)
+		;
+}
+
+void mhu_secure_message_send(uint32_t msg)
+{
+	mmio_write_32(GXBB_HIU_MAILBOX_SET_3, msg);
+
+	while (mmio_read_32(GXBB_HIU_MAILBOX_STAT_3) != 0)
+		;
+}
+
+uint32_t mhu_secure_message_wait(void)
+{
+	uint32_t val;
+
+	do {
+		val = mmio_read_32(GXBB_HIU_MAILBOX_STAT_0);
+	} while (val == 0);
+
+	return val;
+}
+
+void mhu_secure_message_end(void)
+{
+	mmio_write_32(GXBB_HIU_MAILBOX_CLR_0, 0xFFFFFFFF);
+
+	bakery_lock_release(&mhu_lock);
+}
+
+void mhu_secure_init(void)
+{
+	bakery_lock_init(&mhu_lock);
+
+	mmio_write_32(GXBB_HIU_MAILBOX_CLR_3, 0xFFFFFFFF);
+}
diff --git a/plat/amlogic/gxbb/gxbb_pm.c b/plat/amlogic/gxbb/gxbb_pm.c
new file mode 100644
index 0000000..59b9436
--- /dev/null
+++ b/plat/amlogic/gxbb/gxbb_pm.c
@@ -0,0 +1,193 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <errno.h>
+
+#include <platform_def.h>
+
+#include <arch_helpers.h>
+#include <common/debug.h>
+#include <drivers/arm/gicv2.h>
+#include <drivers/console.h>
+#include <lib/mmio.h>
+#include <lib/psci/psci.h>
+#include <plat/common/platform.h>
+
+#include "gxbb_private.h"
+
+#define SCPI_POWER_ON		0
+#define SCPI_POWER_RETENTION	1
+#define SCPI_POWER_OFF		3
+
+#define SCPI_SYSTEM_SHUTDOWN	0
+#define SCPI_SYSTEM_REBOOT	1
+
+static uintptr_t gxbb_sec_entrypoint;
+static volatile uint32_t gxbb_cpu0_go;
+
+static void gxbb_program_mailbox(u_register_t mpidr, uint64_t value)
+{
+	unsigned int core = plat_gxbb_calc_core_pos(mpidr);
+	uintptr_t cpu_mailbox_addr = GXBB_PSCI_MAILBOX_BASE + (core << 4);
+
+	mmio_write_64(cpu_mailbox_addr, value);
+	flush_dcache_range(cpu_mailbox_addr, sizeof(uint64_t));
+}
+
+static void __dead2 gxbb_system_reset(void)
+{
+	INFO("BL31: PSCI_SYSTEM_RESET\n");
+
+	uint32_t status = mmio_read_32(GXBB_AO_RTI_STATUS_REG3);
+
+	NOTICE("BL31: Reboot reason: 0x%x\n", status);
+
+	status &= 0xFFFF0FF0;
+
+	console_flush();
+
+	mmio_write_32(GXBB_AO_RTI_STATUS_REG3, status);
+
+	int ret = scpi_sys_power_state(SCPI_SYSTEM_REBOOT);
+
+	if (ret != 0) {
+		ERROR("BL31: PSCI_SYSTEM_RESET: SCP error: %u\n", ret);
+		panic();
+	}
+
+	wfi();
+
+	ERROR("BL31: PSCI_SYSTEM_RESET: Operation not handled\n");
+	panic();
+}
+
+static void __dead2 gxbb_system_off(void)
+{
+	INFO("BL31: PSCI_SYSTEM_OFF\n");
+
+	unsigned int ret = scpi_sys_power_state(SCPI_SYSTEM_SHUTDOWN);
+
+	if (ret != 0) {
+		ERROR("BL31: PSCI_SYSTEM_OFF: SCP error %u\n", ret);
+		panic();
+	}
+
+	gxbb_program_mailbox(read_mpidr_el1(), 0);
+
+	wfi();
+
+	ERROR("BL31: PSCI_SYSTEM_OFF: Operation not handled\n");
+	panic();
+}
+
+static int32_t gxbb_pwr_domain_on(u_register_t mpidr)
+{
+	unsigned int core = plat_gxbb_calc_core_pos(mpidr);
+
+	/* CPU0 can't be turned OFF, emulate it with a WFE loop */
+	if (core == GXBB_PRIMARY_CPU) {
+		VERBOSE("BL31: Releasing CPU0 from wait loop...\n");
+
+		gxbb_cpu0_go = 1;
+		flush_dcache_range((uintptr_t)&gxbb_cpu0_go, sizeof(gxbb_cpu0_go));
+		dsb();
+		isb();
+
+		sev();
+
+		return PSCI_E_SUCCESS;
+	}
+
+	gxbb_program_mailbox(mpidr, gxbb_sec_entrypoint);
+	scpi_set_css_power_state(mpidr,
+				 SCPI_POWER_ON, SCPI_POWER_ON, SCPI_POWER_ON);
+	dmbsy();
+	sev();
+
+	return PSCI_E_SUCCESS;
+}
+
+static void gxbb_pwr_domain_on_finish(const psci_power_state_t *target_state)
+{
+	unsigned int core = plat_gxbb_calc_core_pos(read_mpidr_el1());
+
+	assert(target_state->pwr_domain_state[MPIDR_AFFLVL0] ==
+					PLAT_LOCAL_STATE_OFF);
+
+	if (core == GXBB_PRIMARY_CPU) {
+		gxbb_cpu0_go = 0;
+		flush_dcache_range((uintptr_t)&gxbb_cpu0_go, sizeof(gxbb_cpu0_go));
+		dsb();
+		isb();
+	}
+
+	gicv2_pcpu_distif_init();
+	gicv2_cpuif_enable();
+}
+
+static void gxbb_pwr_domain_off(const psci_power_state_t *target_state)
+{
+	u_register_t mpidr = read_mpidr_el1();
+	unsigned int core = plat_gxbb_calc_core_pos(mpidr);
+	uintptr_t addr = GXBB_PSCI_MAILBOX_BASE + 8 + (core << 4);
+
+	mmio_write_32(addr, 0xFFFFFFFF);
+	flush_dcache_range(addr, sizeof(uint32_t));
+
+	gicv2_cpuif_disable();
+
+	/* CPU0 can't be turned OFF, emulate it with a WFE loop */
+	if (core == GXBB_PRIMARY_CPU)
+		return;
+
+	scpi_set_css_power_state(mpidr,
+				 SCPI_POWER_OFF, SCPI_POWER_ON, SCPI_POWER_ON);
+}
+
+static void __dead2 gxbb_pwr_domain_pwr_down_wfi(const psci_power_state_t
+						 *target_state)
+{
+	unsigned int core = plat_gxbb_calc_core_pos(read_mpidr_el1());
+
+	/* CPU0 can't be turned OFF, emulate it with a WFE loop */
+	if (core == GXBB_PRIMARY_CPU) {
+		VERBOSE("BL31: CPU0 entering wait loop...\n");
+
+		while (gxbb_cpu0_go == 0)
+			wfe();
+
+		VERBOSE("BL31: CPU0 resumed.\n");
+
+		write_rmr_el3(RMR_EL3_RR_BIT | RMR_EL3_AA64_BIT);
+	}
+
+	dsbsy();
+
+	for (;;)
+		wfi();
+}
+
+/*******************************************************************************
+ * Platform handlers and setup function.
+ ******************************************************************************/
+static const plat_psci_ops_t gxbb_ops = {
+	.pwr_domain_on			= gxbb_pwr_domain_on,
+	.pwr_domain_on_finish		= gxbb_pwr_domain_on_finish,
+	.pwr_domain_off			= gxbb_pwr_domain_off,
+	.pwr_domain_pwr_down_wfi	= gxbb_pwr_domain_pwr_down_wfi,
+	.system_off			= gxbb_system_off,
+	.system_reset			= gxbb_system_reset,
+};
+
+int plat_setup_psci_ops(uintptr_t sec_entrypoint,
+			const plat_psci_ops_t **psci_ops)
+{
+	gxbb_sec_entrypoint = sec_entrypoint;
+	*psci_ops = &gxbb_ops;
+	gxbb_cpu0_go = 0;
+	return 0;
+}
diff --git a/plat/amlogic/gxbb/gxbb_private.h b/plat/amlogic/gxbb/gxbb_private.h
new file mode 100644
index 0000000..910a42c
--- /dev/null
+++ b/plat/amlogic/gxbb/gxbb_private.h
@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef GXBB_PRIVATE_H
+#define GXBB_PRIVATE_H
+
+#include <stdint.h>
+
+/* Utility functions */
+unsigned int plat_gxbb_calc_core_pos(u_register_t mpidr);
+void gxbb_console_init(void);
+void gxbb_setup_page_tables(void);
+
+/* MHU functions */
+void mhu_secure_message_start(void);
+void mhu_secure_message_send(uint32_t msg);
+uint32_t mhu_secure_message_wait(void);
+void mhu_secure_message_end(void);
+void mhu_secure_init(void);
+
+/* SCPI functions */
+void scpi_set_css_power_state(u_register_t mpidr, uint32_t cpu_state,
+			      uint32_t cluster_state, uint32_t css_state);
+uint32_t scpi_sys_power_state(uint64_t system_state);
+void scpi_jtag_set_state(uint32_t state, uint8_t select);
+uint32_t scpi_efuse_read(void *dst, uint32_t base, uint32_t size);
+void scpi_unknown_thermal(uint32_t arg0, uint32_t arg1,
+			  uint32_t arg2, uint32_t arg3);
+
+/* Peripherals */
+void gxbb_thermal_unknown(void);
+uint64_t gxbb_efuse_read(void *dst, uint32_t offset, uint32_t size);
+uint64_t gxbb_efuse_user_max(void);
+
+#endif /* GXBB_PRIVATE_H */
diff --git a/plat/amlogic/gxbb/gxbb_scpi.c b/plat/amlogic/gxbb/gxbb_scpi.c
new file mode 100644
index 0000000..83eeda2
--- /dev/null
+++ b/plat/amlogic/gxbb/gxbb_scpi.c
@@ -0,0 +1,139 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <string.h>
+
+#include <platform_def.h>
+
+#include <lib/mmio.h>
+#include <plat/common/platform.h>
+
+#include "gxbb_private.h"
+
+#define SIZE_SHIFT	20
+#define SIZE_MASK	0x1FF
+
+/*
+ * Note: The Amlogic SCP firmware uses the legacy SCPI protocol.
+ */
+#define SCPI_CMD_SET_CSS_POWER_STATE	0x04
+#define SCPI_CMD_SET_SYS_POWER_STATE	0x08
+
+#define SCPI_CMD_JTAG_SET_STATE		0xC0
+#define SCPI_CMD_EFUSE_READ		0xC2
+
+static inline uint32_t scpi_cmd(uint32_t command, uint32_t size)
+{
+	return command | (size << SIZE_SHIFT);
+}
+
+void scpi_secure_message_send(uint32_t command, uint32_t size)
+{
+	mhu_secure_message_send(scpi_cmd(command, size));
+}
+
+uint32_t scpi_secure_message_receive(void **message_out, size_t *size_out)
+{
+	uint32_t response = mhu_secure_message_wait();
+
+	size_t size = (response >> SIZE_SHIFT) & SIZE_MASK;
+
+	response &= ~(SIZE_MASK << SIZE_SHIFT);
+
+	if (size_out != NULL)
+		*size_out = size;
+
+	if (message_out != NULL)
+		*message_out = (void *)GXBB_MHU_SECURE_SCP_TO_AP_PAYLOAD;
+
+	return response;
+}
+
+void scpi_set_css_power_state(u_register_t mpidr, uint32_t cpu_state,
+			      uint32_t cluster_state, uint32_t css_state)
+{
+	uint32_t state = (mpidr & 0x0F) | /* CPU ID */
+			 ((mpidr & 0xF00) >> 4) | /* Cluster ID */
+			 (cpu_state << 8) |
+			 (cluster_state << 12) |
+			 (css_state << 16);
+
+	mhu_secure_message_start();
+	mmio_write_32(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD, state);
+	mhu_secure_message_send(scpi_cmd(SCPI_CMD_SET_CSS_POWER_STATE, 4));
+	mhu_secure_message_wait();
+	mhu_secure_message_end();
+}
+
+uint32_t scpi_sys_power_state(uint64_t system_state)
+{
+	uint32_t *response;
+	size_t size;
+
+	mhu_secure_message_start();
+	mmio_write_8(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD, system_state);
+	mhu_secure_message_send(scpi_cmd(SCPI_CMD_SET_SYS_POWER_STATE, 1));
+	scpi_secure_message_receive((void *)&response, &size);
+	mhu_secure_message_end();
+
+	return *response;
+}
+
+void scpi_jtag_set_state(uint32_t state, uint8_t select)
+{
+	assert(state <= GXBB_JTAG_STATE_OFF);
+
+	if (select > GXBB_JTAG_A53_EE) {
+		WARN("BL31: Invalid JTAG select (0x%x).\n", select);
+		return;
+	}
+
+	mhu_secure_message_start();
+	mmio_write_32(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD,
+		      (state << 8) | (uint32_t)select);
+	mhu_secure_message_send(scpi_cmd(SCPI_CMD_JTAG_SET_STATE, 4));
+	mhu_secure_message_wait();
+	mhu_secure_message_end();
+}
+
+uint32_t scpi_efuse_read(void *dst, uint32_t base, uint32_t size)
+{
+	uint32_t *response;
+	size_t resp_size;
+
+	if (size > 0x1FC)
+		return 0;
+
+	mhu_secure_message_start();
+	mmio_write_32(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD, base);
+	mmio_write_32(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD + 4, size);
+	mhu_secure_message_send(scpi_cmd(SCPI_CMD_EFUSE_READ, 8));
+	scpi_secure_message_receive((void *)&response, &resp_size);
+	mhu_secure_message_end();
+
+	/*
+	 * response[0] is the size of the response message.
+	 * response[1 ... N] are the contents.
+	 */
+	if (*response != 0)
+		memcpy(dst, response + 1, *response);
+
+	return *response;
+}
+
+void scpi_unknown_thermal(uint32_t arg0, uint32_t arg1,
+			  uint32_t arg2, uint32_t arg3)
+{
+	mhu_secure_message_start();
+	mmio_write_32(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD + 0x0, arg0);
+	mmio_write_32(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD + 0x4, arg1);
+	mmio_write_32(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD + 0x8, arg2);
+	mmio_write_32(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD + 0xC, arg3);
+	mhu_secure_message_send(scpi_cmd(0xC3, 16));
+	mhu_secure_message_wait();
+	mhu_secure_message_end();
+}
diff --git a/plat/amlogic/gxbb/gxbb_sip_svc.c b/plat/amlogic/gxbb/gxbb_sip_svc.c
new file mode 100644
index 0000000..63c7dba
--- /dev/null
+++ b/plat/amlogic/gxbb/gxbb_sip_svc.c
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <stdint.h>
+
+#include <platform_def.h>
+
+#include <common/debug.h>
+#include <common/runtime_svc.h>
+#include <lib/mmio.h>
+
+#include "gxbb_private.h"
+
+/*******************************************************************************
+ * This function is responsible for handling all SiP calls
+ ******************************************************************************/
+static uintptr_t gxbb_sip_handler(uint32_t smc_fid,
+				  u_register_t x1, u_register_t x2,
+				  u_register_t x3, u_register_t x4,
+				  void *cookie, void *handle,
+				  u_register_t flags)
+{
+	switch (smc_fid) {
+
+	case GXBB_SM_GET_SHARE_MEM_INPUT_BASE:
+		SMC_RET1(handle, GXBB_SHARE_MEM_INPUT_BASE);
+
+	case GXBB_SM_GET_SHARE_MEM_OUTPUT_BASE:
+		SMC_RET1(handle, GXBB_SHARE_MEM_OUTPUT_BASE);
+
+	case GXBB_SM_EFUSE_READ:
+	{
+		void *dst = (void *)GXBB_SHARE_MEM_OUTPUT_BASE;
+		uint64_t ret = gxbb_efuse_read(dst, (uint32_t)x1, x2);
+
+		SMC_RET1(handle, ret);
+	}
+	case GXBB_SM_EFUSE_USER_MAX:
+		SMC_RET1(handle,  gxbb_efuse_user_max());
+
+	case GXBB_SM_JTAG_ON:
+		scpi_jtag_set_state(GXBB_JTAG_STATE_ON, x1);
+		SMC_RET1(handle, 0);
+
+	case GXBB_SM_JTAG_OFF:
+		scpi_jtag_set_state(GXBB_JTAG_STATE_OFF, x1);
+		SMC_RET1(handle, 0);
+
+	default:
+		ERROR("BL31: Unhandled SIP SMC: 0x%08x\n", smc_fid);
+		break;
+	}
+
+	SMC_RET1(handle, SMC_UNK);
+}
+
+DECLARE_RT_SVC(
+	gxbb_sip_handler,
+
+	OEN_SIP_START,
+	OEN_SIP_END,
+	SMC_TYPE_FAST,
+	NULL,
+	gxbb_sip_handler
+);
diff --git a/plat/amlogic/gxbb/gxbb_thermal.c b/plat/amlogic/gxbb/gxbb_thermal.c
new file mode 100644
index 0000000..b6048ee
--- /dev/null
+++ b/plat/amlogic/gxbb/gxbb_thermal.c
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <stdint.h>
+
+#include "gxbb_private.h"
+
+static int32_t modules_initialized = -1;
+
+/*******************************************************************************
+ * Unknown commands related to something thermal-related
+ ******************************************************************************/
+void gxbb_thermal_unknown(void)
+{
+	uint16_t ret;
+
+	if (modules_initialized == -1) {
+		scpi_efuse_read(&ret, 0, 2);
+		modules_initialized = ret;
+	}
+
+	scpi_unknown_thermal(10, 2,  /* thermal */
+			     13, 1); /* thermalver */
+}
diff --git a/plat/amlogic/gxbb/gxbb_topology.c b/plat/amlogic/gxbb/gxbb_topology.c
new file mode 100644
index 0000000..eec2d34
--- /dev/null
+++ b/plat/amlogic/gxbb/gxbb_topology.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <stdint.h>
+
+#include <platform_def.h>
+
+#include <arch.h>
+
+#include "gxbb_private.h"
+
+/* The power domain tree descriptor */
+static unsigned char power_domain_tree_desc[] = {
+	/* Number of root nodes */
+	PLATFORM_CLUSTER_COUNT,
+	/* Number of children for the first node */
+	PLATFORM_CLUSTER0_CORE_COUNT
+};
+
+/*******************************************************************************
+ * This function returns the ARM default topology tree information.
+ ******************************************************************************/
+const unsigned char *plat_get_power_domain_tree_desc(void)
+{
+	return power_domain_tree_desc;
+}
+
+/*******************************************************************************
+ * This function implements a part of the critical interface between the psci
+ * generic layer and the platform that allows the former to query the platform
+ * to convert an MPIDR to a unique linear index. An error code (-1) is returned
+ * in case the MPIDR is invalid.
+ ******************************************************************************/
+int plat_core_pos_by_mpidr(u_register_t mpidr)
+{
+	unsigned int cluster_id, cpu_id;
+
+	mpidr &= MPIDR_AFFINITY_MASK;
+	if (mpidr & ~(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK))
+		return -1;
+
+	cluster_id = (mpidr >> MPIDR_AFF1_SHIFT) & MPIDR_AFFLVL_MASK;
+	cpu_id = (mpidr >> MPIDR_AFF0_SHIFT) & MPIDR_AFFLVL_MASK;
+
+	if (cluster_id >= PLATFORM_CLUSTER_COUNT)
+		return -1;
+
+	if (cpu_id >= PLATFORM_MAX_CPUS_PER_CLUSTER)
+		return -1;
+
+	return plat_gxbb_calc_core_pos(mpidr);
+}
diff --git a/plat/amlogic/gxbb/include/plat_macros.S b/plat/amlogic/gxbb/include/plat_macros.S
new file mode 100644
index 0000000..c721c21
--- /dev/null
+++ b/plat/amlogic/gxbb/include/plat_macros.S
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef PLAT_MACROS_S
+#define PLAT_MACROS_S
+
+#include <drivers/arm/gicv2.h>
+#include <platform_def.h>
+
+.section .rodata.gic_reg_name, "aS"
+
+gicc_regs:
+	.asciz "gicc_hppir", "gicc_ahppir", "gicc_ctlr", ""
+gicd_pend_reg:
+	.asciz "gicd_ispendr regs (Offsets 0x200 - 0x278)\n Offset:\t\t\tvalue\n"
+newline:
+	.asciz "\n"
+spacer:
+	.asciz ":\t\t0x"
+
+	/* ---------------------------------------------
+	 * The below required platform porting macro
+	 * prints out relevant GIC and CCI registers
+	 * whenever an unhandled exception is taken in
+	 * BL31.
+	 * Clobbers: x0 - x10, x16, x17, sp
+	 * ---------------------------------------------
+	 */
+	.macro plat_crash_print_regs
+
+	/* GICC registers */
+
+	mov_imm	x17, GXBB_GICC_BASE
+
+	adr	x6, gicc_regs
+	ldr	w8, [x17, #GICC_HPPIR]
+	ldr	w9, [x17, #GICC_AHPPIR]
+	ldr	w10, [x17, #GICC_CTLR]
+	bl	str_in_crash_buf_print
+
+	/* GICD registers */
+
+	mov_imm	x16, GXBB_GICD_BASE
+
+	add	x7, x16, #GICD_ISPENDR
+	adr	x4, gicd_pend_reg
+	bl	asm_print_str
+
+gicd_ispendr_loop:
+	sub	x4, x7, x16
+	cmp	x4, #0x280
+	b.eq	exit_print_gic_regs
+	bl	asm_print_hex
+
+	adr	x4, spacer
+	bl	asm_print_str
+
+	ldr	x4, [x7], #8
+	bl	asm_print_hex
+
+	adr	x4, newline
+	bl	asm_print_str
+	b	gicd_ispendr_loop
+exit_print_gic_regs:
+
+	.endm
+
+#endif /* PLAT_MACROS_S */
diff --git a/plat/amlogic/gxbb/include/platform_def.h b/plat/amlogic/gxbb/include/platform_def.h
new file mode 100644
index 0000000..da4aedd
--- /dev/null
+++ b/plat/amlogic/gxbb/include/platform_def.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef PLATFORM_DEF_H
+#define PLATFORM_DEF_H
+
+#include <arch.h>
+#include <lib/utils_def.h>
+
+#include "../gxbb_def.h"
+
+#define PLATFORM_LINKER_FORMAT		"elf64-littleaarch64"
+#define PLATFORM_LINKER_ARCH		aarch64
+
+/* Special value used to verify platform parameters from BL2 to BL31 */
+#define GXBB_BL31_PLAT_PARAM_VAL	ULL(0x0F1E2D3C4B5A6978)
+
+#define PLATFORM_STACK_SIZE		UL(0x1000)
+
+#define PLATFORM_MAX_CPUS_PER_CLUSTER	U(4)
+#define PLATFORM_CLUSTER_COUNT		U(1)
+#define PLATFORM_CLUSTER0_CORE_COUNT	PLATFORM_MAX_CPUS_PER_CLUSTER
+#define PLATFORM_CORE_COUNT		PLATFORM_CLUSTER0_CORE_COUNT
+
+#define GXBB_PRIMARY_CPU		U(0)
+
+#define PLAT_MAX_PWR_LVL		MPIDR_AFFLVL1
+#define PLAT_NUM_PWR_DOMAINS		(PLATFORM_CLUSTER_COUNT + \
+					 PLATFORM_CORE_COUNT)
+
+#define PLAT_MAX_RET_STATE		U(1)
+#define PLAT_MAX_OFF_STATE		U(2)
+
+/* Local power state for power domains in Run state. */
+#define PLAT_LOCAL_STATE_RUN		U(0)
+/* Local power state for retention. Valid only for CPU power domains */
+#define PLAT_LOCAL_STATE_RET		U(1)
+/* Local power state for power-down. Valid for CPU and cluster power domains. */
+#define PLAT_LOCAL_STATE_OFF		U(2)
+
+/*
+ * Macros used to parse state information from State-ID if it is using the
+ * recommended encoding for State-ID.
+ */
+#define PLAT_LOCAL_PSTATE_WIDTH		U(4)
+#define PLAT_LOCAL_PSTATE_MASK		((U(1) << PLAT_LOCAL_PSTATE_WIDTH) - 1)
+
+/*
+ * Some data must be aligned on the biggest cache line size in the platform.
+ * This is known only to the platform as it might have a combination of
+ * integrated and external caches.
+ */
+#define CACHE_WRITEBACK_SHIFT		U(6)
+#define CACHE_WRITEBACK_GRANULE		(U(1) << CACHE_WRITEBACK_SHIFT)
+
+/* Memory-related defines */
+#define PLAT_PHY_ADDR_SPACE_SIZE	(ULL(1) << 32)
+#define PLAT_VIRT_ADDR_SPACE_SIZE	(ULL(1) << 32)
+
+#define MAX_MMAP_REGIONS		12
+#define MAX_XLAT_TABLES			5
+
+#endif /* PLATFORM_DEF_H */
diff --git a/plat/amlogic/gxbb/platform.mk b/plat/amlogic/gxbb/platform.mk
new file mode 100644
index 0000000..06aaaba
--- /dev/null
+++ b/plat/amlogic/gxbb/platform.mk
@@ -0,0 +1,69 @@
+#
+# Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+include lib/xlat_tables_v2/xlat_tables.mk
+
+PLAT_INCLUDES		:=	-Iplat/amlogic/gxbb/include
+
+GXBB_GIC_SOURCES	:=	drivers/arm/gic/common/gic_common.c	\
+				drivers/arm/gic/v2/gicv2_main.c		\
+				drivers/arm/gic/v2/gicv2_helpers.c	\
+				plat/common/plat_gicv2.c
+
+PLAT_BL_COMMON_SOURCES	:=	drivers/amlogic/console/aarch64/meson_console.S \
+				plat/amlogic/gxbb/gxbb_common.c		\
+				plat/amlogic/gxbb/gxbb_topology.c		\
+				${XLAT_TABLES_LIB_SRCS}
+
+BL31_SOURCES		+=	lib/cpus/aarch64/cortex_a53.S		\
+				plat/common/plat_psci_common.c		\
+				plat/amlogic/gxbb/aarch64/gxbb_helpers.S	\
+				plat/amlogic/gxbb/gxbb_bl31_setup.c	\
+				plat/amlogic/gxbb/gxbb_efuse.c		\
+				plat/amlogic/gxbb/gxbb_mhu.c		\
+				plat/amlogic/gxbb/gxbb_pm.c		\
+				plat/amlogic/gxbb/gxbb_scpi.c		\
+				plat/amlogic/gxbb/gxbb_sip_svc.c		\
+				plat/amlogic/gxbb/gxbb_thermal.c		\
+				${GXBB_GIC_SOURCES}
+
+# Tune compiler for Cortex-A53
+ifeq ($(notdir $(CC)),armclang)
+    TF_CFLAGS_aarch64	+=	-mcpu=cortex-a53
+else ifneq ($(findstring clang,$(notdir $(CC))),)
+    TF_CFLAGS_aarch64	+=	-mcpu=cortex-a53
+else
+    TF_CFLAGS_aarch64	+=	-mtune=cortex-a53
+endif
+
+# Build config flags
+# ------------------
+
+# Enable all errata workarounds for Cortex-A53
+ERRATA_A53_826319		:= 1
+ERRATA_A53_835769		:= 1
+ERRATA_A53_836870		:= 1
+ERRATA_A53_843419		:= 1
+ERRATA_A53_855873		:= 1
+
+WORKAROUND_CVE_2017_5715	:= 0
+
+# Have different sections for code and rodata
+SEPARATE_CODE_AND_RODATA	:= 1
+
+# Use Coherent memory
+USE_COHERENT_MEM		:= 1
+
+# Verify build config
+# -------------------
+
+ifneq (${RESET_TO_BL31}, 0)
+  $(error Error: gxbb needs RESET_TO_BL31=0)
+endif
+
+ifeq (${ARCH},aarch32)
+  $(error Error: AArch32 not supported on gxbb)
+endif
diff --git a/plat/amlogic/gxl/aarch64/gxl_helpers.S b/plat/amlogic/gxl/aarch64/gxl_helpers.S
new file mode 100644
index 0000000..760d6c4
--- /dev/null
+++ b/plat/amlogic/gxl/aarch64/gxl_helpers.S
@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch.h>
+#include <asm_macros.S>
+#include <assert_macros.S>
+#include <platform_def.h>
+
+	.globl	plat_crash_console_flush
+	.globl	plat_crash_console_init
+	.globl	plat_crash_console_putc
+	.globl	platform_mem_init
+	.globl	plat_is_my_cpu_primary
+	.globl	plat_my_core_pos
+	.globl	plat_reset_handler
+	.globl	plat_gxbb_calc_core_pos
+
+	/* -----------------------------------------------------
+	 * unsigned int plat_my_core_pos(void);
+	 * -----------------------------------------------------
+	 */
+func plat_my_core_pos
+	mrs	x0, mpidr_el1
+	b	plat_gxbb_calc_core_pos
+endfunc plat_my_core_pos
+
+	/* -----------------------------------------------------
+	 *  unsigned int plat_gxbb_calc_core_pos(u_register_t mpidr);
+	 * -----------------------------------------------------
+	 */
+func plat_gxbb_calc_core_pos
+	and	x0, x0, #MPIDR_CPU_MASK
+	ret
+endfunc plat_gxbb_calc_core_pos
+
+	/* -----------------------------------------------------
+	 * unsigned int plat_is_my_cpu_primary(void);
+	 * -----------------------------------------------------
+	 */
+func plat_is_my_cpu_primary
+	mrs	x0, mpidr_el1
+	and	x0, x0, #(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK)
+	cmp	x0, #GXBB_PRIMARY_CPU
+	cset	w0, eq
+	ret
+endfunc plat_is_my_cpu_primary
+
+	/* ---------------------------------------------
+	 * void platform_mem_init(void);
+	 * ---------------------------------------------
+	 */
+func platform_mem_init
+	ret
+endfunc platform_mem_init
+
+	/* ---------------------------------------------
+	 * int plat_crash_console_init(void)
+	 * ---------------------------------------------
+	 */
+func plat_crash_console_init
+	mov_imm	x0, GXBB_UART0_AO_BASE
+	mov_imm	x1, GXBB_UART0_AO_CLK_IN_HZ
+	mov_imm	x2, GXBB_UART_BAUDRATE
+	b	console_meson_init
+endfunc plat_crash_console_init
+
+	/* ---------------------------------------------
+	 * int plat_crash_console_putc(int c)
+	 * Clobber list : x1, x2
+	 * ---------------------------------------------
+	 */
+func plat_crash_console_putc
+	mov_imm	x1, GXBB_UART0_AO_BASE
+	b	console_meson_core_putc
+endfunc plat_crash_console_putc
+
+	/* ---------------------------------------------
+	 * int plat_crash_console_flush()
+	 * Out : return -1 on error else return 0.
+	 * Clobber list : x0, x1
+	 * ---------------------------------------------
+	 */
+func plat_crash_console_flush
+	mov_imm	x0, GXBB_UART0_AO_BASE
+	b	console_meson_core_flush
+endfunc plat_crash_console_flush
+
+	/* ---------------------------------------------
+	 * void plat_reset_handler(void);
+	 * ---------------------------------------------
+	 */
+func plat_reset_handler
+	ret
+endfunc plat_reset_handler
diff --git a/plat/amlogic/gxl/gxl_bl31_setup.c b/plat/amlogic/gxl/gxl_bl31_setup.c
new file mode 100644
index 0000000..b1da794
--- /dev/null
+++ b/plat/amlogic/gxl/gxl_bl31_setup.c
@@ -0,0 +1,162 @@
+/*
+ * Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <common/bl_common.h>
+#include <drivers/arm/gicv2.h>
+#include <common/interrupt_props.h>
+#include <plat/common/platform.h>
+#include <platform_def.h>
+#include <lib/mmio.h>
+#include <lib/xlat_tables/xlat_mmu_helpers.h>
+
+#include "gxl_private.h"
+
+/*
+ * Placeholder variables for copying the arguments that have been passed to
+ * BL31 from BL2.
+ */
+static entry_point_info_t bl33_image_ep_info;
+static image_info_t bl30_image_info;
+static image_info_t bl301_image_info;
+
+/*******************************************************************************
+ * Return a pointer to the 'entry_point_info' structure of the next image for
+ * the security state specified. BL33 corresponds to the non-secure image type
+ * while BL32 corresponds to the secure image type. A NULL pointer is returned
+ * if the image does not exist.
+ ******************************************************************************/
+entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type)
+{
+	entry_point_info_t *next_image_info;
+
+	assert(type == NON_SECURE);
+
+	next_image_info = &bl33_image_ep_info;
+
+	/* None of the images can have 0x0 as the entrypoint. */
+	if (next_image_info->pc != 0U) {
+		return next_image_info;
+	} else {
+		return NULL;
+	}
+}
+
+/*******************************************************************************
+ * Perform any BL31 early platform setup. Here is an opportunity to copy
+ * parameters passed by the calling EL (S-EL1 in BL2 & S-EL3 in BL1) before
+ * they are lost (potentially). This needs to be done before the MMU is
+ * initialized so that the memory layout can be used while creating page
+ * tables. BL2 has flushed this information to memory, so we are guaranteed
+ * to pick up good data.
+ ******************************************************************************/
+struct gxl_bl31_param {
+	param_header_t h;
+	image_info_t *bl31_image_info;
+	entry_point_info_t *bl32_ep_info;
+	image_info_t *bl32_image_info;
+	entry_point_info_t *bl33_ep_info;
+	image_info_t *bl33_image_info;
+	image_info_t *scp_image_info[];
+};
+
+void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
+				u_register_t arg2, u_register_t arg3)
+{
+	struct gxl_bl31_param *from_bl2;
+
+	/* Initialize the console to provide early debug support */
+	gxbb_console_init();
+
+	/* Check that params passed from BL2 are not NULL. */
+	from_bl2 = (struct gxl_bl31_param *) arg0;
+
+	/* Check params passed from BL2 are not NULL. */
+	assert(from_bl2 != NULL);
+	assert(from_bl2->h.type == PARAM_BL31);
+	assert(from_bl2->h.version >= VERSION_1);
+
+	/*
+	 * Copy BL33 entry point information. It is stored in Secure RAM, in
+	 * BL2's address space.
+	 */
+	bl33_image_ep_info = *from_bl2->bl33_ep_info;
+
+	if (bl33_image_ep_info.pc == 0U) {
+		ERROR("BL31: BL33 entrypoint not obtained from BL2\n");
+		panic();
+	}
+
+	bl30_image_info = *from_bl2->scp_image_info[0];
+	bl301_image_info = *from_bl2->scp_image_info[1];
+}
+
+void bl31_plat_arch_setup(void)
+{
+	gxbb_setup_page_tables();
+
+	enable_mmu_el3(0);
+}
+
+static inline bool gxl_scp_ready(void)
+{
+	return GXBB_AO_RTI_SCP_IS_READY(mmio_read_32(GXBB_AO_RTI_SCP_STAT));
+}
+
+static inline void gxl_scp_boot(void)
+{
+	scpi_upload_scp_fw(bl30_image_info.image_base,
+			bl30_image_info.image_size, 0);
+	scpi_upload_scp_fw(bl301_image_info.image_base,
+			bl301_image_info.image_size, 1);
+	while (!gxl_scp_ready())
+		;
+}
+
+/*******************************************************************************
+ * GICv2 driver setup information
+ ******************************************************************************/
+static const interrupt_prop_t gxbb_interrupt_props[] = {
+	INTR_PROP_DESC(IRQ_SEC_PHY_TIMER, GIC_HIGHEST_SEC_PRIORITY,
+		       GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
+	INTR_PROP_DESC(IRQ_SEC_SGI_0, GIC_HIGHEST_SEC_PRIORITY,
+		       GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
+	INTR_PROP_DESC(IRQ_SEC_SGI_1, GIC_HIGHEST_SEC_PRIORITY,
+		       GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
+	INTR_PROP_DESC(IRQ_SEC_SGI_2, GIC_HIGHEST_SEC_PRIORITY,
+		       GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
+	INTR_PROP_DESC(IRQ_SEC_SGI_3, GIC_HIGHEST_SEC_PRIORITY,
+		       GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
+	INTR_PROP_DESC(IRQ_SEC_SGI_4, GIC_HIGHEST_SEC_PRIORITY,
+		       GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
+	INTR_PROP_DESC(IRQ_SEC_SGI_5, GIC_HIGHEST_SEC_PRIORITY,
+		       GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
+	INTR_PROP_DESC(IRQ_SEC_SGI_6, GIC_HIGHEST_SEC_PRIORITY,
+		       GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
+	INTR_PROP_DESC(IRQ_SEC_SGI_7, GIC_HIGHEST_SEC_PRIORITY,
+		       GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
+};
+
+static const gicv2_driver_data_t gxbb_gic_data = {
+	.gicd_base = GXBB_GICD_BASE,
+	.gicc_base = GXBB_GICC_BASE,
+	.interrupt_props = gxbb_interrupt_props,
+	.interrupt_props_num = ARRAY_SIZE(gxbb_interrupt_props),
+};
+
+void bl31_platform_setup(void)
+{
+	mhu_secure_init();
+
+	gicv2_driver_init(&gxbb_gic_data);
+	gicv2_distif_init();
+	gicv2_pcpu_distif_init();
+	gicv2_cpuif_enable();
+
+	gxl_scp_boot();
+
+	gxbb_thermal_unknown();
+}
diff --git a/plat/amlogic/gxl/gxl_common.c b/plat/amlogic/gxl/gxl_common.c
new file mode 100644
index 0000000..e3bd604
--- /dev/null
+++ b/plat/amlogic/gxl/gxl_common.c
@@ -0,0 +1,143 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <common/bl_common.h>
+#include <common/debug.h>
+#include <common/ep_info.h>
+#include <bl31/interrupt_mgmt.h>
+#include <meson_console.h>
+#include <lib/mmio.h>
+#include <platform_def.h>
+#include <stdint.h>
+#include <lib/xlat_tables/xlat_tables_v2.h>
+
+/*******************************************************************************
+ * Platform memory map regions
+ ******************************************************************************/
+#define MAP_NSDRAM0	MAP_REGION_FLAT(GXBB_NSDRAM0_BASE,		\
+					GXBB_NSDRAM0_SIZE,		\
+					MT_MEMORY | MT_RW | MT_NS)
+
+#define MAP_NSDRAM1	MAP_REGION_FLAT(GXBB_NSDRAM1_BASE,		\
+					GXBB_NSDRAM1_SIZE,		\
+					MT_MEMORY | MT_RW | MT_NS)
+
+#define MAP_SEC_DEVICE0	MAP_REGION_FLAT(GXBB_SEC_DEVICE0_BASE,		\
+					GXBB_SEC_DEVICE0_SIZE,		\
+					MT_DEVICE | MT_RW | MT_SECURE)
+
+#define MAP_SEC_DEVICE1	MAP_REGION_FLAT(GXBB_SEC_DEVICE1_BASE,		\
+					GXBB_SEC_DEVICE1_SIZE,		\
+					MT_DEVICE | MT_RW | MT_SECURE)
+
+#define MAP_TZRAM	MAP_REGION_FLAT(GXBB_TZRAM_BASE,		\
+					GXBB_TZRAM_SIZE,		\
+					MT_DEVICE | MT_RW | MT_SECURE)
+
+#define MAP_SEC_DEVICE2	MAP_REGION_FLAT(GXBB_SEC_DEVICE2_BASE,		\
+					GXBB_SEC_DEVICE2_SIZE,		\
+					MT_DEVICE | MT_RW | MT_SECURE)
+
+#define MAP_SEC_DEVICE3	MAP_REGION_FLAT(GXBB_SEC_DEVICE3_BASE,		\
+					GXBB_SEC_DEVICE3_SIZE,		\
+					MT_DEVICE | MT_RW | MT_SECURE)
+
+static const mmap_region_t gxbb_mmap[] = {
+	MAP_NSDRAM0,
+	MAP_NSDRAM1,
+	MAP_SEC_DEVICE0,
+	MAP_SEC_DEVICE1,
+	MAP_TZRAM,
+	MAP_SEC_DEVICE2,
+	MAP_SEC_DEVICE3,
+	{0}
+};
+
+/*******************************************************************************
+ * Per-image regions
+ ******************************************************************************/
+#define MAP_BL31	MAP_REGION_FLAT(BL31_BASE,			\
+				BL31_END - BL31_BASE,			\
+				MT_MEMORY | MT_RW | MT_SECURE)
+
+#define MAP_BL_CODE	MAP_REGION_FLAT(BL_CODE_BASE,			\
+				BL_CODE_END - BL_CODE_BASE,		\
+				MT_CODE | MT_SECURE)
+
+#define MAP_BL_RO_DATA	MAP_REGION_FLAT(BL_RO_DATA_BASE,		\
+				BL_RO_DATA_END - BL_RO_DATA_BASE,	\
+				MT_RO_DATA | MT_SECURE)
+
+#define MAP_BL_COHERENT	MAP_REGION_FLAT(BL_COHERENT_RAM_BASE,		\
+				BL_COHERENT_RAM_END - BL_COHERENT_RAM_BASE, \
+				MT_DEVICE | MT_RW | MT_SECURE)
+
+/*******************************************************************************
+ * Function that sets up the translation tables.
+ ******************************************************************************/
+void gxbb_setup_page_tables(void)
+{
+#if IMAGE_BL31
+	const mmap_region_t gxbb_bl_mmap[] = {
+		MAP_BL31,
+		MAP_BL_CODE,
+		MAP_BL_RO_DATA,
+#if USE_COHERENT_MEM
+		MAP_BL_COHERENT,
+#endif
+		{0}
+	};
+#endif
+
+	mmap_add(gxbb_bl_mmap);
+
+	mmap_add(gxbb_mmap);
+
+	init_xlat_tables();
+}
+
+/*******************************************************************************
+ * Function that sets up the console
+ ******************************************************************************/
+static console_meson_t gxbb_console;
+
+void gxbb_console_init(void)
+{
+	int rc = console_meson_register(GXBB_UART0_AO_BASE,
+					GXBB_UART0_AO_CLK_IN_HZ,
+					GXBB_UART_BAUDRATE,
+					&gxbb_console);
+	if (rc == 0) {
+		/*
+		 * The crash console doesn't use the multi console API, it uses
+		 * the core console functions directly. It is safe to call panic
+		 * and let it print debug information.
+		 */
+		panic();
+	}
+
+	console_set_scope(&gxbb_console.console,
+			  CONSOLE_FLAG_BOOT | CONSOLE_FLAG_RUNTIME);
+}
+
+/*******************************************************************************
+ * Function that returns the system counter frequency
+ ******************************************************************************/
+unsigned int plat_get_syscnt_freq2(void)
+{
+	uint32_t val;
+
+	val = mmio_read_32(GXBB_SYS_CPU_CFG7);
+	val &= 0xFDFFFFFF;
+	mmio_write_32(GXBB_SYS_CPU_CFG7, val);
+
+	val = mmio_read_32(GXBB_AO_TIMESTAMP_CNTL);
+	val &= 0xFFFFFE00;
+	mmio_write_32(GXBB_AO_TIMESTAMP_CNTL, val);
+
+	return GXBB_OSC24M_CLK_IN_HZ;
+}
diff --git a/plat/amlogic/gxl/gxl_def.h b/plat/amlogic/gxl/gxl_def.h
new file mode 100644
index 0000000..089fa8d
--- /dev/null
+++ b/plat/amlogic/gxl/gxl_def.h
@@ -0,0 +1,128 @@
+/*
+ * Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef GXBB_DEF_H
+#define GXBB_DEF_H
+
+#include <lib/utils_def.h>
+
+/*******************************************************************************
+ * System oscillator
+ ******************************************************************************/
+#define GXBB_OSC24M_CLK_IN_HZ			ULL(24000000) /* 24 MHz */
+
+/*******************************************************************************
+ * Memory regions
+ ******************************************************************************/
+#define GXBB_NSDRAM0_BASE			UL(0x01000000)
+#define GXBB_NSDRAM0_SIZE			UL(0x0F000000)
+
+#define GXBB_NSDRAM1_BASE			UL(0x10000000)
+#define GXBB_NSDRAM1_SIZE			UL(0x00100000)
+
+#define BL31_BASE				UL(0x05100000)
+#define BL31_SIZE				UL(0x000C0000)
+#define BL31_LIMIT				(BL31_BASE + BL31_SIZE)
+
+/* Shared memory used for SMC services */
+#define GXBB_SHARE_MEM_INPUT_BASE		UL(0x050FE000)
+#define GXBB_SHARE_MEM_OUTPUT_BASE		UL(0x050FF000)
+
+#define GXBB_SEC_DEVICE0_BASE			UL(0xC0000000)
+#define GXBB_SEC_DEVICE0_SIZE			UL(0x09000000)
+
+#define GXBB_SEC_DEVICE1_BASE			UL(0xD0040000)
+#define GXBB_SEC_DEVICE1_SIZE			UL(0x00008000)
+
+#define GXBB_TZRAM_BASE				UL(0xD9000000)
+#define GXBB_TZRAM_SIZE				UL(0x00014000)
+/* Top 0xC000 bytes (up to 0xD9020000) used by BL2 */
+
+/* Mailboxes */
+#define GXBB_MHU_SECURE_SCP_TO_AP_PAYLOAD	UL(0xD9013800)
+#define GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD	UL(0xD9013A00)
+#define GXBB_PSCI_MAILBOX_BASE			UL(0xD9013F00)
+
+// * [	 1K]	0xD901_3800 - 0xD901_3BFF	Secure Mailbox (3)
+// * [	 1K]	0xD901_3400 - 0xD901_37FF	High Mailbox (2) *
+// * [	 1K]	0xD901_3000 - 0xD901_33FF	High Mailbox (1) *
+
+#define GXBB_TZROM_BASE				UL(0xD9040000)
+#define GXBB_TZROM_SIZE				UL(0x00010000)
+
+#define GXBB_SEC_DEVICE2_BASE			UL(0xDA000000)
+#define GXBB_SEC_DEVICE2_SIZE			UL(0x00200000)
+
+#define GXBB_SEC_DEVICE3_BASE			UL(0xDA800000)
+#define GXBB_SEC_DEVICE3_SIZE			UL(0x00200000)
+
+/*******************************************************************************
+ * GIC-400 and interrupt handling related constants
+ ******************************************************************************/
+#define GXBB_GICD_BASE				UL(0xC4301000)
+#define GXBB_GICC_BASE				UL(0xC4302000)
+
+#define IRQ_SEC_PHY_TIMER			29
+
+#define IRQ_SEC_SGI_0				8
+#define IRQ_SEC_SGI_1				9
+#define IRQ_SEC_SGI_2				10
+#define IRQ_SEC_SGI_3				11
+#define IRQ_SEC_SGI_4				12
+#define IRQ_SEC_SGI_5				13
+#define IRQ_SEC_SGI_6				14
+#define IRQ_SEC_SGI_7				15
+
+/*******************************************************************************
+ * UART definitions
+ ******************************************************************************/
+#define GXBB_UART0_AO_BASE			UL(0xC81004C0)
+#define GXBB_UART0_AO_CLK_IN_HZ			GXBB_OSC24M_CLK_IN_HZ
+#define GXBB_UART_BAUDRATE			U(115200)
+
+/*******************************************************************************
+ * Memory-mapped I/O Registers
+ ******************************************************************************/
+#define GXBB_AO_TIMESTAMP_CNTL			UL(0xC81000B4)
+
+#define GXBB_SYS_CPU_CFG7			UL(0xC8834664)
+
+#define GXBB_AO_RTI_STATUS_REG3			UL(0xDA10001C)
+#define GXBB_AO_RTI_SCP_STAT			UL(0xDA10023C)
+#define GXBB_AO_RTI_SCP_READY_OFF		U(0x14)
+#define GXBB_A0_RTI_SCP_READY_MASK		U(3)
+#define GXBB_AO_RTI_SCP_IS_READY(v)		\
+	((((v) >> GXBB_AO_RTI_SCP_READY_OFF) & \
+	  GXBB_A0_RTI_SCP_READY_MASK) == GXBB_A0_RTI_SCP_READY_MASK)
+
+#define GXBB_HIU_MAILBOX_SET_0			UL(0xDA83C404)
+#define GXBB_HIU_MAILBOX_STAT_0			UL(0xDA83C408)
+#define GXBB_HIU_MAILBOX_CLR_0			UL(0xDA83C40C)
+#define GXBB_HIU_MAILBOX_SET_3			UL(0xDA83C428)
+#define GXBB_HIU_MAILBOX_STAT_3			UL(0xDA83C42C)
+#define GXBB_HIU_MAILBOX_CLR_3			UL(0xDA83C430)
+
+/*******************************************************************************
+ * System Monitor Call IDs and arguments
+ ******************************************************************************/
+#define GXBB_SM_GET_SHARE_MEM_INPUT_BASE	U(0x82000020)
+#define GXBB_SM_GET_SHARE_MEM_OUTPUT_BASE	U(0x82000021)
+
+#define GXBB_SM_EFUSE_READ			U(0x82000030)
+#define GXBB_SM_EFUSE_USER_MAX			U(0x82000033)
+
+#define GXBB_SM_JTAG_ON				U(0x82000040)
+#define GXBB_SM_JTAG_OFF			U(0x82000041)
+
+#define GXBB_JTAG_STATE_ON			U(0)
+#define GXBB_JTAG_STATE_OFF			U(1)
+
+#define GXBB_JTAG_M3_AO				U(0)
+#define GXBB_JTAG_M3_EE				U(1)
+#define GXBB_JTAG_A53_AO			U(2)
+#define GXBB_JTAG_A53_EE			U(3)
+
+#endif /* GXBB_DEF_H */
diff --git a/plat/amlogic/gxl/gxl_efuse.c b/plat/amlogic/gxl/gxl_efuse.c
new file mode 100644
index 0000000..b17d1b8
--- /dev/null
+++ b/plat/amlogic/gxl/gxl_efuse.c
@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <stdint.h>
+
+#include "gxl_private.h"
+
+#define EFUSE_BASE	0x140
+#define EFUSE_SIZE	0xC0
+
+uint64_t gxbb_efuse_read(void *dst, uint32_t offset, uint32_t size)
+{
+	if ((uint64_t)(offset + size) > (uint64_t)EFUSE_SIZE)
+		return 0;
+
+	return scpi_efuse_read(dst, offset + EFUSE_BASE, size);
+}
+
+uint64_t gxbb_efuse_user_max(void)
+{
+	return EFUSE_SIZE;
+}
diff --git a/plat/amlogic/gxl/gxl_mhu.c b/plat/amlogic/gxl/gxl_mhu.c
new file mode 100644
index 0000000..4c1d5b6
--- /dev/null
+++ b/plat/amlogic/gxl/gxl_mhu.c
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <lib/bakery_lock.h>
+#include <lib/mmio.h>
+#include <platform_def.h>
+
+static DEFINE_BAKERY_LOCK(mhu_lock);
+
+void mhu_secure_message_start(void)
+{
+	bakery_lock_get(&mhu_lock);
+
+	while (mmio_read_32(GXBB_HIU_MAILBOX_STAT_3) != 0)
+		;
+}
+
+void mhu_secure_message_send(uint32_t msg)
+{
+	mmio_write_32(GXBB_HIU_MAILBOX_SET_3, msg);
+
+	while (mmio_read_32(GXBB_HIU_MAILBOX_STAT_3) != 0)
+		;
+}
+
+uint32_t mhu_secure_message_wait(void)
+{
+	uint32_t val;
+
+	do {
+		val = mmio_read_32(GXBB_HIU_MAILBOX_STAT_0);
+	} while (val == 0);
+
+	return val;
+}
+
+void mhu_secure_message_end(void)
+{
+	mmio_write_32(GXBB_HIU_MAILBOX_CLR_0, 0xFFFFFFFF);
+
+	bakery_lock_release(&mhu_lock);
+}
+
+void mhu_secure_init(void)
+{
+	bakery_lock_init(&mhu_lock);
+
+	mmio_write_32(GXBB_HIU_MAILBOX_CLR_3, 0xFFFFFFFF);
+}
diff --git a/plat/amlogic/gxl/gxl_pm.c b/plat/amlogic/gxl/gxl_pm.c
new file mode 100644
index 0000000..4a5d26e
--- /dev/null
+++ b/plat/amlogic/gxl/gxl_pm.c
@@ -0,0 +1,214 @@
+/*
+ * Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch_helpers.h>
+#include <assert.h>
+#include <drivers/console.h>
+#include <common/debug.h>
+#include <errno.h>
+#include <drivers/arm/gicv2.h>
+#include <lib/mmio.h>
+#include <plat/common/platform.h>
+#include <platform_def.h>
+#include <lib/psci/psci.h>
+
+#include "gxl_private.h"
+
+#define SCPI_POWER_ON		0
+#define SCPI_POWER_RETENTION	1
+#define SCPI_POWER_OFF		3
+
+#define SCPI_SYSTEM_SHUTDOWN	0
+#define SCPI_SYSTEM_REBOOT	1
+
+static uintptr_t gxbb_sec_entrypoint;
+static volatile uint32_t gxbb_cpu0_go;
+
+static void gxl_pm_set_reset_addr(u_register_t mpidr, uint64_t value)
+{
+	unsigned int core = plat_gxbb_calc_core_pos(mpidr);
+	uintptr_t cpu_mailbox_addr = GXBB_PSCI_MAILBOX_BASE + (core << 4);
+
+	mmio_write_64(cpu_mailbox_addr, value);
+}
+
+static void gxl_pm_reset(u_register_t mpidr)
+{
+	unsigned int core = plat_gxbb_calc_core_pos(mpidr);
+	uintptr_t cpu_mailbox_addr = GXBB_PSCI_MAILBOX_BASE + (core << 4) + 8;
+
+	mmio_write_32(cpu_mailbox_addr, 0);
+}
+
+static void __dead2 gxbb_system_reset(void)
+{
+	INFO("BL31: PSCI_SYSTEM_RESET\n");
+
+	u_register_t mpidr = read_mpidr_el1();
+	uint32_t status = mmio_read_32(GXBB_AO_RTI_STATUS_REG3);
+	int ret;
+
+	NOTICE("BL31: Reboot reason: 0x%x\n", status);
+
+	status &= 0xFFFF0FF0;
+
+	console_flush();
+
+	mmio_write_32(GXBB_AO_RTI_STATUS_REG3, status);
+
+	ret = scpi_sys_power_state(SCPI_SYSTEM_REBOOT);
+
+	if (ret != 0) {
+		ERROR("BL31: PSCI_SYSTEM_RESET: SCP error: %i\n", ret);
+		panic();
+	}
+
+	gxl_pm_reset(mpidr);
+
+	wfi();
+
+	ERROR("BL31: PSCI_SYSTEM_RESET: Operation not handled\n");
+	panic();
+}
+
+static void __dead2 gxbb_system_off(void)
+{
+	INFO("BL31: PSCI_SYSTEM_OFF\n");
+
+	u_register_t mpidr = read_mpidr_el1();
+	int ret;
+
+	ret = scpi_sys_power_state(SCPI_SYSTEM_SHUTDOWN);
+
+	if (ret != 0) {
+		ERROR("BL31: PSCI_SYSTEM_OFF: SCP error %i\n", ret);
+		panic();
+	}
+
+	gxl_pm_set_reset_addr(mpidr, 0);
+	gxl_pm_reset(mpidr);
+
+	wfi();
+
+	ERROR("BL31: PSCI_SYSTEM_OFF: Operation not handled\n");
+	panic();
+}
+
+static int32_t gxbb_pwr_domain_on(u_register_t mpidr)
+{
+	unsigned int core = plat_gxbb_calc_core_pos(mpidr);
+
+	/* CPU0 can't be turned OFF, emulate it with a WFE loop */
+	if (core == GXBB_PRIMARY_CPU) {
+		VERBOSE("BL31: Releasing CPU0 from wait loop...\n");
+
+		gxbb_cpu0_go = 1;
+		flush_dcache_range((uintptr_t)&gxbb_cpu0_go,
+				sizeof(gxbb_cpu0_go));
+		dsb();
+		isb();
+
+		sev();
+
+		return PSCI_E_SUCCESS;
+	}
+
+	gxl_pm_set_reset_addr(mpidr, gxbb_sec_entrypoint);
+	scpi_set_css_power_state(mpidr,
+				 SCPI_POWER_ON, SCPI_POWER_ON, SCPI_POWER_ON);
+	dmbsy();
+	sev();
+
+	return PSCI_E_SUCCESS;
+}
+
+static void gxbb_pwr_domain_on_finish(const psci_power_state_t *target_state)
+{
+	unsigned int core = plat_gxbb_calc_core_pos(read_mpidr_el1());
+
+	assert(target_state->pwr_domain_state[MPIDR_AFFLVL0] ==
+					PLAT_LOCAL_STATE_OFF);
+
+	if (core == GXBB_PRIMARY_CPU) {
+		gxbb_cpu0_go = 0;
+		flush_dcache_range((uintptr_t)&gxbb_cpu0_go,
+				sizeof(gxbb_cpu0_go));
+		dsb();
+		isb();
+	}
+
+	gicv2_pcpu_distif_init();
+	gicv2_cpuif_enable();
+}
+
+static void gxbb_pwr_domain_off(const psci_power_state_t *target_state)
+{
+	u_register_t mpidr = read_mpidr_el1();
+	unsigned int core = plat_gxbb_calc_core_pos(mpidr);
+
+	gicv2_cpuif_disable();
+
+	/* CPU0 can't be turned OFF, emulate it with a WFE loop */
+	if (core == GXBB_PRIMARY_CPU)
+		return;
+
+	scpi_set_css_power_state(mpidr,
+				 SCPI_POWER_OFF, SCPI_POWER_ON, SCPI_POWER_ON);
+}
+
+static void __dead2 gxbb_pwr_domain_pwr_down_wfi(const psci_power_state_t
+						 *target_state)
+{
+	u_register_t mpidr = read_mpidr_el1();
+	unsigned int core = plat_gxbb_calc_core_pos(mpidr);
+
+	/* CPU0 can't be turned OFF, emulate it with a WFE loop */
+	if (core == GXBB_PRIMARY_CPU) {
+		VERBOSE("BL31: CPU0 entering wait loop...\n");
+
+		while (gxbb_cpu0_go == 0)
+			wfe();
+
+		VERBOSE("BL31: CPU0 resumed.\n");
+
+		/*
+		 * Because setting CPU0's warm reset entrypoint through PSCI
+		 * mailbox and/or mmio mapped RVBAR (0xda834650) does not seem
+		 * to work, jump to it manually.
+		 * In order to avoid an assert, mmu has to be disabled.
+		 */
+		disable_mmu_el3();
+		((void(*)(void))gxbb_sec_entrypoint)();
+	}
+
+	dsbsy();
+	gxl_pm_set_reset_addr(mpidr, 0);
+	gxl_pm_reset(mpidr);
+
+	for (;;)
+		wfi();
+}
+
+/*******************************************************************************
+ * Platform handlers and setup function.
+ ******************************************************************************/
+static const plat_psci_ops_t gxbb_ops = {
+	.pwr_domain_on			= gxbb_pwr_domain_on,
+	.pwr_domain_on_finish		= gxbb_pwr_domain_on_finish,
+	.pwr_domain_off			= gxbb_pwr_domain_off,
+	.pwr_domain_pwr_down_wfi	= gxbb_pwr_domain_pwr_down_wfi,
+	.system_off			= gxbb_system_off,
+	.system_reset			= gxbb_system_reset,
+};
+
+int plat_setup_psci_ops(uintptr_t sec_entrypoint,
+			const plat_psci_ops_t **psci_ops)
+{
+	gxbb_sec_entrypoint = sec_entrypoint;
+	*psci_ops = &gxbb_ops;
+	gxbb_cpu0_go = 0;
+	return 0;
+}
diff --git a/plat/amlogic/gxl/gxl_private.h b/plat/amlogic/gxl/gxl_private.h
new file mode 100644
index 0000000..913cbf6
--- /dev/null
+++ b/plat/amlogic/gxl/gxl_private.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef GXBB_PRIVATE_H
+#define GXBB_PRIVATE_H
+
+#include <stdint.h>
+#include <stddef.h>
+
+/* Utility functions */
+unsigned int plat_gxbb_calc_core_pos(u_register_t mpidr);
+void gxbb_console_init(void);
+void gxbb_setup_page_tables(void);
+
+/* MHU functions */
+void mhu_secure_message_start(void);
+void mhu_secure_message_send(uint32_t msg);
+uint32_t mhu_secure_message_wait(void);
+void mhu_secure_message_end(void);
+void mhu_secure_init(void);
+
+/* SCPI functions */
+void scpi_set_css_power_state(u_register_t mpidr, uint32_t cpu_state,
+			      uint32_t cluster_state, uint32_t css_state);
+uint32_t scpi_sys_power_state(uint64_t system_state);
+void scpi_jtag_set_state(uint32_t state, uint8_t select);
+uint32_t scpi_efuse_read(void *dst, uint32_t base, uint32_t size);
+void scpi_unknown_thermal(uint32_t arg0, uint32_t arg1,
+			  uint32_t arg2, uint32_t arg3);
+void scpi_upload_scp_fw(uintptr_t addr, size_t size, int send);
+
+/* Peripherals */
+void gxbb_thermal_unknown(void);
+uint64_t gxbb_efuse_read(void *dst, uint32_t offset, uint32_t size);
+uint64_t gxbb_efuse_user_max(void);
+
+#endif /* GXBB_PRIVATE_H */
diff --git a/plat/amlogic/gxl/gxl_scpi.c b/plat/amlogic/gxl/gxl_scpi.c
new file mode 100644
index 0000000..13d6524
--- /dev/null
+++ b/plat/amlogic/gxl/gxl_scpi.c
@@ -0,0 +1,211 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <lib/mmio.h>
+#include <plat/common/platform.h>
+#include <platform_def.h>
+#include <string.h>
+#include <crypto/sha_dma.h>
+
+#include "gxl_private.h"
+
+#define SIZE_SHIFT	20
+#define SIZE_MASK	0x1FF
+#define SIZE_FWBLK	0x200UL
+
+/*
+ * Note: The Amlogic SCP firmware uses the legacy SCPI protocol.
+ */
+#define SCPI_CMD_SET_CSS_POWER_STATE	0x04
+#define SCPI_CMD_SET_SYS_POWER_STATE	0x08
+
+#define SCPI_CMD_JTAG_SET_STATE		0xC0
+#define SCPI_CMD_EFUSE_READ		0xC2
+
+#define SCPI_CMD_COPY_FW 0xd4
+#define SCPI_CMD_SET_FW_ADDR 0xd3
+#define SCPI_CMD_FW_SIZE 0xd2
+
+static inline uint32_t scpi_cmd(uint32_t command, uint32_t size)
+{
+	return command | (size << SIZE_SHIFT);
+}
+
+static void scpi_secure_message_send(uint32_t command, uint32_t size)
+{
+	mhu_secure_message_send(scpi_cmd(command, size));
+}
+
+uint32_t scpi_secure_message_receive(void **message_out, size_t *size_out)
+{
+	uint32_t response = mhu_secure_message_wait();
+
+	size_t size = (response >> SIZE_SHIFT) & SIZE_MASK;
+
+	response &= ~(SIZE_MASK << SIZE_SHIFT);
+
+	if (size_out != NULL)
+		*size_out = size;
+
+	if (message_out != NULL)
+		*message_out = (void *)GXBB_MHU_SECURE_SCP_TO_AP_PAYLOAD;
+
+	return response;
+}
+
+void scpi_set_css_power_state(u_register_t mpidr, uint32_t cpu_state,
+			      uint32_t cluster_state, uint32_t css_state)
+{
+	uint32_t state = (mpidr & 0x0F) | /* CPU ID */
+			 ((mpidr & 0xF00) >> 4) | /* Cluster ID */
+			 (cpu_state << 8) |
+			 (cluster_state << 12) |
+			 (css_state << 16);
+
+	mhu_secure_message_start();
+	mmio_write_32(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD, state);
+	mhu_secure_message_send(scpi_cmd(SCPI_CMD_SET_CSS_POWER_STATE, 4));
+	mhu_secure_message_wait();
+	mhu_secure_message_end();
+}
+
+uint32_t scpi_sys_power_state(uint64_t system_state)
+{
+	uint32_t *response;
+	size_t size;
+
+	mhu_secure_message_start();
+	mmio_write_8(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD, system_state);
+	mhu_secure_message_send(scpi_cmd(SCPI_CMD_SET_SYS_POWER_STATE, 1));
+	scpi_secure_message_receive((void *)&response, &size);
+	mhu_secure_message_end();
+
+	return *response;
+}
+
+void scpi_jtag_set_state(uint32_t state, uint8_t select)
+{
+	assert(state <= GXBB_JTAG_STATE_OFF);
+
+	if (select > GXBB_JTAG_A53_EE) {
+		WARN("BL31: Invalid JTAG select (0x%x).\n", select);
+		return;
+	}
+
+	mhu_secure_message_start();
+	mmio_write_32(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD,
+		      (state << 8) | (uint32_t)select);
+	mhu_secure_message_send(scpi_cmd(SCPI_CMD_JTAG_SET_STATE, 4));
+	mhu_secure_message_wait();
+	mhu_secure_message_end();
+}
+
+uint32_t scpi_efuse_read(void *dst, uint32_t base, uint32_t size)
+{
+	uint32_t *response;
+	size_t resp_size;
+
+	if (size > 0x1FC)
+		return 0;
+
+	mhu_secure_message_start();
+	mmio_write_32(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD, base);
+	mmio_write_32(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD + 4, size);
+	mhu_secure_message_send(scpi_cmd(SCPI_CMD_EFUSE_READ, 8));
+	scpi_secure_message_receive((void *)&response, &resp_size);
+	mhu_secure_message_end();
+
+	/*
+	 * response[0] is the size of the response message.
+	 * response[1 ... N] are the contents.
+	 */
+	if (*response != 0)
+		memcpy(dst, response + 1, *response);
+
+	return *response;
+}
+
+void scpi_unknown_thermal(uint32_t arg0, uint32_t arg1,
+			  uint32_t arg2, uint32_t arg3)
+{
+	mhu_secure_message_start();
+	mmio_write_32(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD + 0x0, arg0);
+	mmio_write_32(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD + 0x4, arg1);
+	mmio_write_32(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD + 0x8, arg2);
+	mmio_write_32(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD + 0xC, arg3);
+	mhu_secure_message_send(scpi_cmd(0xC3, 16));
+	mhu_secure_message_wait();
+	mhu_secure_message_end();
+}
+
+static inline void scpi_copy_scp_data(uint8_t *data, size_t len)
+{
+	void *dst = (void *)GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD;
+	size_t sz;
+
+	mmio_write_32(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD, len);
+	scpi_secure_message_send(SCPI_CMD_FW_SIZE, len);
+	mhu_secure_message_wait();
+
+	for (sz = 0; sz < len; sz += SIZE_FWBLK) {
+		memcpy(dst, data + sz, MIN(SIZE_FWBLK, len - sz));
+		mhu_secure_message_send(SCPI_CMD_COPY_FW);
+	}
+}
+
+static inline void scpi_set_scp_addr(uint64_t addr, size_t len)
+{
+	volatile uint64_t *dst = (uint64_t *)GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD;
+
+	/*
+	 * It is ok as GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD is mapped as
+	 * non cachable
+	 */
+	*dst = addr;
+	scpi_secure_message_send(SCPI_CMD_SET_FW_ADDR, sizeof(addr));
+	mhu_secure_message_wait();
+
+	mmio_write_32(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD, len);
+	scpi_secure_message_send(SCPI_CMD_FW_SIZE, len);
+	mhu_secure_message_wait();
+}
+
+static inline void scpi_send_fw_hash(uint8_t hash[], size_t len)
+{
+	void *dst = (void *)GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD;
+
+	memcpy(dst, hash, len);
+	mhu_secure_message_send(0xd0);
+	mhu_secure_message_send(0xd1);
+	mhu_secure_message_send(0xd5);
+	mhu_secure_message_end();
+}
+
+/**
+ * Upload a FW to SCP.
+ *
+ * @param addr: firmware data address
+ * @param size: size of firmware
+ * @param send: If set, actually copy the firmware in SCP memory otherwise only
+ *  send the firmware address.
+ */
+void scpi_upload_scp_fw(uintptr_t addr, size_t size, int send)
+{
+	struct asd_ctx ctx;
+
+	asd_sha_init(&ctx, ASM_SHA256);
+	asd_sha_update(&ctx, (void *)addr, size);
+	asd_sha_finalize(&ctx);
+
+	mhu_secure_message_start();
+	if (send == 0)
+		scpi_set_scp_addr(addr, size);
+	else
+		scpi_copy_scp_data((void *)addr, size);
+
+	scpi_send_fw_hash(ctx.digest, sizeof(ctx.digest));
+}
diff --git a/plat/amlogic/gxl/gxl_sip_svc.c b/plat/amlogic/gxl/gxl_sip_svc.c
new file mode 100644
index 0000000..74fbc80
--- /dev/null
+++ b/plat/amlogic/gxl/gxl_sip_svc.c
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <common/debug.h>
+#include <lib/mmio.h>
+#include <platform_def.h>
+#include <common/runtime_svc.h>
+#include <stdint.h>
+
+#include "gxl_private.h"
+
+/*******************************************************************************
+ * This function is responsible for handling all SiP calls
+ ******************************************************************************/
+static uintptr_t gxbb_sip_handler(uint32_t smc_fid,
+				  u_register_t x1, u_register_t x2,
+				  u_register_t x3, u_register_t x4,
+				  void *cookie, void *handle,
+				  u_register_t flags)
+{
+	switch (smc_fid) {
+
+	case GXBB_SM_GET_SHARE_MEM_INPUT_BASE:
+		SMC_RET1(handle, GXBB_SHARE_MEM_INPUT_BASE);
+
+	case GXBB_SM_GET_SHARE_MEM_OUTPUT_BASE:
+		SMC_RET1(handle, GXBB_SHARE_MEM_OUTPUT_BASE);
+
+	case GXBB_SM_EFUSE_READ:
+	{
+		void *dst = (void *)GXBB_SHARE_MEM_OUTPUT_BASE;
+		uint64_t ret = gxbb_efuse_read(dst, (uint32_t)x1, x2);
+
+		SMC_RET1(handle, ret);
+	}
+	case GXBB_SM_EFUSE_USER_MAX:
+		SMC_RET1(handle,  gxbb_efuse_user_max());
+
+	case GXBB_SM_JTAG_ON:
+		scpi_jtag_set_state(GXBB_JTAG_STATE_ON, x1);
+		SMC_RET1(handle, 0);
+
+	case GXBB_SM_JTAG_OFF:
+		scpi_jtag_set_state(GXBB_JTAG_STATE_OFF, x1);
+		SMC_RET1(handle, 0);
+
+	default:
+		ERROR("BL31: Unhandled SIP SMC: 0x%08x\n", smc_fid);
+		break;
+	}
+
+	SMC_RET1(handle, SMC_UNK);
+}
+
+DECLARE_RT_SVC(
+	gxbb_sip_handler,
+
+	OEN_SIP_START,
+	OEN_SIP_END,
+	SMC_TYPE_FAST,
+	NULL,
+	gxbb_sip_handler
+);
diff --git a/plat/amlogic/gxl/gxl_thermal.c b/plat/amlogic/gxl/gxl_thermal.c
new file mode 100644
index 0000000..3af1c6d
--- /dev/null
+++ b/plat/amlogic/gxl/gxl_thermal.c
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <stdint.h>
+
+#include "gxl_private.h"
+
+static int32_t modules_initialized = -1;
+
+/*******************************************************************************
+ * Unknown commands related to something thermal-related
+ ******************************************************************************/
+void gxbb_thermal_unknown(void)
+{
+	uint16_t ret;
+
+	if (modules_initialized == -1) {
+		scpi_efuse_read(&ret, 0, 2);
+		modules_initialized = ret;
+	}
+
+	scpi_unknown_thermal(10, 2,  /* thermal */
+			     13, 1); /* thermalver */
+}
diff --git a/plat/amlogic/gxl/gxl_topology.c b/plat/amlogic/gxl/gxl_topology.c
new file mode 100644
index 0000000..cca3ead
--- /dev/null
+++ b/plat/amlogic/gxl/gxl_topology.c
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch.h>
+#include <platform_def.h>
+#include <stdint.h>
+
+#include "gxl_private.h"
+
+/* The power domain tree descriptor */
+static unsigned char power_domain_tree_desc[] = {
+	/* Number of root nodes */
+	PLATFORM_CLUSTER_COUNT,
+	/* Number of children for the first node */
+	PLATFORM_CLUSTER0_CORE_COUNT
+};
+
+/*******************************************************************************
+ * This function returns the ARM default topology tree information.
+ ******************************************************************************/
+const unsigned char *plat_get_power_domain_tree_desc(void)
+{
+	return power_domain_tree_desc;
+}
+
+/*******************************************************************************
+ * This function implements a part of the critical interface between the psci
+ * generic layer and the platform that allows the former to query the platform
+ * to convert an MPIDR to a unique linear index. An error code (-1) is returned
+ * in case the MPIDR is invalid.
+ ******************************************************************************/
+int plat_core_pos_by_mpidr(u_register_t mpidr)
+{
+	unsigned int cluster_id, cpu_id;
+
+	mpidr &= MPIDR_AFFINITY_MASK;
+	if (mpidr & ~(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK))
+		return -1;
+
+	cluster_id = (mpidr >> MPIDR_AFF1_SHIFT) & MPIDR_AFFLVL_MASK;
+	cpu_id = (mpidr >> MPIDR_AFF0_SHIFT) & MPIDR_AFFLVL_MASK;
+
+	if (cluster_id >= PLATFORM_CLUSTER_COUNT)
+		return -1;
+
+	if (cpu_id >= PLATFORM_MAX_CPUS_PER_CLUSTER)
+		return -1;
+
+	return plat_gxbb_calc_core_pos(mpidr);
+}
diff --git a/plat/amlogic/gxl/include/plat_macros.S b/plat/amlogic/gxl/include/plat_macros.S
new file mode 100644
index 0000000..c721c21
--- /dev/null
+++ b/plat/amlogic/gxl/include/plat_macros.S
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef PLAT_MACROS_S
+#define PLAT_MACROS_S
+
+#include <drivers/arm/gicv2.h>
+#include <platform_def.h>
+
+.section .rodata.gic_reg_name, "aS"
+
+gicc_regs:
+	.asciz "gicc_hppir", "gicc_ahppir", "gicc_ctlr", ""
+gicd_pend_reg:
+	.asciz "gicd_ispendr regs (Offsets 0x200 - 0x278)\n Offset:\t\t\tvalue\n"
+newline:
+	.asciz "\n"
+spacer:
+	.asciz ":\t\t0x"
+
+	/* ---------------------------------------------
+	 * The below required platform porting macro
+	 * prints out relevant GIC and CCI registers
+	 * whenever an unhandled exception is taken in
+	 * BL31.
+	 * Clobbers: x0 - x10, x16, x17, sp
+	 * ---------------------------------------------
+	 */
+	.macro plat_crash_print_regs
+
+	/* GICC registers */
+
+	mov_imm	x17, GXBB_GICC_BASE
+
+	adr	x6, gicc_regs
+	ldr	w8, [x17, #GICC_HPPIR]
+	ldr	w9, [x17, #GICC_AHPPIR]
+	ldr	w10, [x17, #GICC_CTLR]
+	bl	str_in_crash_buf_print
+
+	/* GICD registers */
+
+	mov_imm	x16, GXBB_GICD_BASE
+
+	add	x7, x16, #GICD_ISPENDR
+	adr	x4, gicd_pend_reg
+	bl	asm_print_str
+
+gicd_ispendr_loop:
+	sub	x4, x7, x16
+	cmp	x4, #0x280
+	b.eq	exit_print_gic_regs
+	bl	asm_print_hex
+
+	adr	x4, spacer
+	bl	asm_print_str
+
+	ldr	x4, [x7], #8
+	bl	asm_print_hex
+
+	adr	x4, newline
+	bl	asm_print_str
+	b	gicd_ispendr_loop
+exit_print_gic_regs:
+
+	.endm
+
+#endif /* PLAT_MACROS_S */
diff --git a/plat/amlogic/gxl/include/platform_def.h b/plat/amlogic/gxl/include/platform_def.h
new file mode 100644
index 0000000..b32ec56
--- /dev/null
+++ b/plat/amlogic/gxl/include/platform_def.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef PLATFORM_DEF_H
+#define PLATFORM_DEF_H
+
+#include <arch.h>
+#include <lib/utils_def.h>
+
+#include "../gxl_def.h"
+
+#define PLATFORM_LINKER_FORMAT		"elf64-littleaarch64"
+#define PLATFORM_LINKER_ARCH		aarch64
+
+/* Special value used to verify platform parameters from BL2 to BL31 */
+#define GXBB_BL31_PLAT_PARAM_VAL	ULL(0x0F1E2D3C4B5A6978)
+
+#define PLATFORM_STACK_SIZE		UL(0x1000)
+
+#define PLATFORM_MAX_CPUS_PER_CLUSTER	U(4)
+#define PLATFORM_CLUSTER_COUNT		U(1)
+#define PLATFORM_CLUSTER0_CORE_COUNT	PLATFORM_MAX_CPUS_PER_CLUSTER
+#define PLATFORM_CORE_COUNT		PLATFORM_CLUSTER0_CORE_COUNT
+
+#define GXBB_PRIMARY_CPU		U(0)
+
+#define PLAT_MAX_PWR_LVL		MPIDR_AFFLVL1
+#define PLAT_NUM_PWR_DOMAINS		(PLATFORM_CLUSTER_COUNT + \
+					 PLATFORM_CORE_COUNT)
+
+#define PLAT_MAX_RET_STATE		U(1)
+#define PLAT_MAX_OFF_STATE		U(2)
+
+/* Local power state for power domains in Run state. */
+#define PLAT_LOCAL_STATE_RUN		U(0)
+/* Local power state for retention. Valid only for CPU power domains */
+#define PLAT_LOCAL_STATE_RET		U(1)
+/* Local power state for power-down. Valid for CPU and cluster power domains. */
+#define PLAT_LOCAL_STATE_OFF		U(2)
+
+/*
+ * Macros used to parse state information from State-ID if it is using the
+ * recommended encoding for State-ID.
+ */
+#define PLAT_LOCAL_PSTATE_WIDTH		U(4)
+#define PLAT_LOCAL_PSTATE_MASK		((U(1) << PLAT_LOCAL_PSTATE_WIDTH) - 1)
+
+/*
+ * Some data must be aligned on the biggest cache line size in the platform.
+ * This is known only to the platform as it might have a combination of
+ * integrated and external caches.
+ */
+#define CACHE_WRITEBACK_SHIFT		U(6)
+#define CACHE_WRITEBACK_GRANULE		(U(1) << CACHE_WRITEBACK_SHIFT)
+
+/* Memory-related defines */
+#define PLAT_PHY_ADDR_SPACE_SIZE	(ULL(1) << 32)
+#define PLAT_VIRT_ADDR_SPACE_SIZE	(ULL(1) << 32)
+
+#define MAX_MMAP_REGIONS		12
+#define MAX_XLAT_TABLES			6
+
+#endif /* PLATFORM_DEF_H */
diff --git a/plat/amlogic/gxl/platform.mk b/plat/amlogic/gxl/platform.mk
new file mode 100644
index 0000000..9cdf37a
--- /dev/null
+++ b/plat/amlogic/gxl/platform.mk
@@ -0,0 +1,87 @@
+#
+# Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+include lib/xlat_tables_v2/xlat_tables.mk
+
+DOIMAGEPATH		?=	tools/amlogic
+DOIMAGETOOL		?=	${DOIMAGEPATH}/doimage
+
+PLAT_INCLUDES		:=	-Iinclude/drivers/amlogic/		\
+				-Iinclude/drivers/amlogic/gxl		\
+				-Iplat/amlogic/gxl/include
+
+GXBB_GIC_SOURCES	:=	drivers/arm/gic/common/gic_common.c	\
+				drivers/arm/gic/v2/gicv2_main.c		\
+				drivers/arm/gic/v2/gicv2_helpers.c	\
+				plat/common/plat_gicv2.c
+
+PLAT_BL_COMMON_SOURCES	:=	drivers/amlogic/console/aarch64/meson_console.S \
+				plat/amlogic/gxl/gxl_common.c		\
+				plat/amlogic/gxl/gxl_topology.c		\
+				${XLAT_TABLES_LIB_SRCS}
+
+BL31_SOURCES		+=	lib/cpus/aarch64/cortex_a53.S		\
+				plat/common/plat_psci_common.c		\
+				plat/amlogic/gxl/aarch64/gxl_helpers.S	\
+				plat/amlogic/gxl/gxl_bl31_setup.c		\
+				plat/amlogic/gxl/gxl_efuse.c		\
+				plat/amlogic/gxl/gxl_mhu.c		\
+				plat/amlogic/gxl/gxl_pm.c			\
+				plat/amlogic/gxl/gxl_scpi.c		\
+				plat/amlogic/gxl/gxl_sip_svc.c		\
+				plat/amlogic/gxl/gxl_thermal.c		\
+				drivers/amlogic/gxl/crypto/sha_dma.c	\
+				${GXBB_GIC_SOURCES}
+
+# Tune compiler for Cortex-A53
+ifeq ($(notdir $(CC)),armclang)
+    TF_CFLAGS_aarch64	+=	-mcpu=cortex-a53
+else ifneq ($(findstring clang,$(notdir $(CC))),)
+    TF_CFLAGS_aarch64	+=	-mcpu=cortex-a53
+else
+    TF_CFLAGS_aarch64	+=	-mtune=cortex-a53
+endif
+
+# Build config flags
+# ------------------
+
+# Enable all errata workarounds for Cortex-A53
+ERRATA_A53_855873		:= 1
+ERRATA_A53_819472		:= 1
+ERRATA_A53_824069		:= 1
+ERRATA_A53_827319		:= 1
+
+WORKAROUND_CVE_2017_5715	:= 0
+
+# Have different sections for code and rodata
+SEPARATE_CODE_AND_RODATA	:= 1
+
+# Use Coherent memory
+USE_COHERENT_MEM		:= 1
+
+# Verify build config
+# -------------------
+
+ifneq (${RESET_TO_BL31}, 0)
+  $(error Error: gxl needs RESET_TO_BL31=0)
+endif
+
+ifeq (${ARCH},aarch32)
+  $(error Error: AArch32 not supported on gxl)
+endif
+
+all: ${BUILD_PLAT}/bl31.img
+distclean realclean clean: cleanimage
+
+cleanimage:
+	${Q}${MAKE} -C ${DOIMAGEPATH} clean
+
+${DOIMAGETOOL}:
+	${Q}${MAKE} -C ${DOIMAGEPATH}
+
+${BUILD_PLAT}/bl31.img: ${BUILD_PLAT}/bl31.bin ${DOIMAGETOOL}
+	${DOIMAGETOOL} ${BUILD_PLAT}/bl31.bin ${BUILD_PLAT}/bl31.img
+