Adding upstream version 2.10.0+dfsg.upstream/2.10.0+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 822 insertions, 0 deletions

diff --git a/plat/marvell/armada/a3k/common/plat_pm.c b/plat/marvell/armada/a3k/common/plat_pm.c
new file mode 100644
index 0000000..e2d15ab
--- /dev/null
+++ b/plat/marvell/armada/a3k/common/plat_pm.c
@@ -0,0 +1,822 @@
+/*
+ * Copyright (C) 2018-2020 Marvell International Ltd.
+ *
+ * SPDX-License-Identifier:	BSD-3-Clause
+ * https://spdx.org/licenses
+ */
+
+#include <common/debug.h>
+#ifdef USE_CCI
+#include <drivers/arm/cci.h>
+#endif
+#include <lib/psci/psci.h>
+#include <lib/mmio.h>
+#include <plat/common/platform.h>
+
+#include <a3700_pm.h>
+#include <arch_helpers.h>
+#include <armada_common.h>
+#include <dram_win.h>
+#include <io_addr_dec.h>
+#include <mvebu.h>
+#include <mvebu_def.h>
+#include <marvell_plat_priv.h>
+#include <plat_marvell.h>
+
+/* Warm reset register */
+#define MVEBU_WARM_RESET_REG		(MVEBU_NB_REGS_BASE + 0x840)
+#define MVEBU_WARM_RESET_MAGIC		0x1D1E
+
+/* North Bridge GPIO1 SEL register */
+#define MVEBU_NB_GPIO1_SEL_REG		(MVEBU_NB_REGS_BASE + 0x830)
+ #define MVEBU_NB_GPIO1_UART1_SEL	BIT(19)
+ #define MVEBU_NB_GPIO1_GPIO_25_26_EN	BIT(17)
+ #define MVEBU_NB_GPIO1_GPIO_19_EN	BIT(14)
+ #define MVEBU_NB_GPIO1_GPIO_18_EN	BIT(13)
+
+/* CPU 1 reset register */
+#define MVEBU_CPU_1_RESET_VECTOR	(MVEBU_REGS_BASE + 0x14044)
+#define MVEBU_CPU_1_RESET_REG		(MVEBU_REGS_BASE + 0xD00C)
+#define MVEBU_CPU_1_RESET_BIT		31
+
+/* IRQ register */
+#define MVEBU_NB_IRQ_STATUS_1_REG		(MVEBU_NB_SB_IRQ_REG_BASE)
+#define MVEBU_NB_IRQ_STATUS_2_REG		(MVEBU_NB_SB_IRQ_REG_BASE + \
+						0x10)
+#define MVEBU_NB_IRQ_MASK_2_REG			(MVEBU_NB_SB_IRQ_REG_BASE + \
+						0x18)
+#define MVEBU_SB_IRQ_STATUS_1_REG		(MVEBU_NB_SB_IRQ_REG_BASE + \
+						0x40)
+#define MVEBU_SB_IRQ_STATUS_2_REG		(MVEBU_NB_SB_IRQ_REG_BASE + \
+						0x50)
+#define MVEBU_NB_GPIO_IRQ_MASK_1_REG		(MVEBU_NB_SB_IRQ_REG_BASE + \
+						0xC8)
+#define MVEBU_NB_GPIO_IRQ_MASK_2_REG		(MVEBU_NB_SB_IRQ_REG_BASE + \
+						0xD8)
+#define MVEBU_SB_GPIO_IRQ_MASK_REG		(MVEBU_NB_SB_IRQ_REG_BASE + \
+						0xE8)
+#define MVEBU_NB_GPIO_IRQ_EN_LOW_REG		(MVEBU_NB_GPIO_IRQ_REG_BASE)
+#define MVEBU_NB_GPIO_IRQ_EN_HIGH_REG		(MVEBU_NB_GPIO_IRQ_REG_BASE + \
+						0x04)
+#define MVEBU_NB_GPIO_IRQ_STATUS_LOW_REG	(MVEBU_NB_GPIO_IRQ_REG_BASE + \
+						0x10)
+#define MVEBU_NB_GPIO_IRQ_STATUS_HIGH_REG	(MVEBU_NB_GPIO_IRQ_REG_BASE + \
+						0x14)
+#define MVEBU_NB_GPIO_IRQ_WK_LOW_REG		(MVEBU_NB_GPIO_IRQ_REG_BASE + \
+						0x18)
+#define MVEBU_NB_GPIO_IRQ_WK_HIGH_REG		(MVEBU_NB_GPIO_IRQ_REG_BASE + \
+						0x1C)
+#define MVEBU_SB_GPIO_IRQ_EN_REG		(MVEBU_SB_GPIO_IRQ_REG_BASE)
+#define MVEBU_SB_GPIO_IRQ_STATUS_REG		(MVEBU_SB_GPIO_IRQ_REG_BASE + \
+						0x10)
+#define MVEBU_SB_GPIO_IRQ_WK_REG		(MVEBU_SB_GPIO_IRQ_REG_BASE + \
+						0x18)
+
+/* PMU registers */
+#define MVEBU_PM_NB_PWR_CTRL_REG	(MVEBU_PMSU_REG_BASE)
+ #define MVEBU_PM_PWR_DN_CNT_SEL	BIT(28)
+ #define MVEBU_PM_SB_PWR_DWN		BIT(4)
+ #define MVEBU_PM_INTERFACE_IDLE	BIT(0)
+#define MVEBU_PM_NB_CPU_PWR_CTRL_REG	(MVEBU_PMSU_REG_BASE + 0x4)
+ #define MVEBU_PM_L2_FLUSH_EN		BIT(22)
+#define MVEBU_PM_NB_PWR_OPTION_REG	(MVEBU_PMSU_REG_BASE + 0x8)
+ #define MVEBU_PM_DDR_SR_EN		BIT(29)
+ #define MVEBU_PM_DDR_CLK_DIS_EN	BIT(28)
+ #define MVEBU_PM_WARM_RESET_EN		BIT(27)
+ #define MVEBU_PM_DDRPHY_PWRDWN_EN	BIT(23)
+ #define MVEBU_PM_DDRPHY_PAD_PWRDWN_EN	BIT(22)
+ #define MVEBU_PM_OSC_OFF_EN		BIT(21)
+ #define MVEBU_PM_TBG_OFF_EN		BIT(20)
+ #define MVEBU_PM_CPU_VDDV_OFF_EN	BIT(19)
+ #define MVEBU_PM_AVS_DISABLE_MODE	BIT(14)
+ #define MVEBU_PM_AVS_VDD2_MODE		BIT(13)
+ #define MVEBU_PM_AVS_HOLD_MODE		BIT(12)
+ #define MVEBU_PM_L2_SRAM_LKG_PD_EN	BIT(8)
+ #define MVEBU_PM_EIP_SRAM_LKG_PD_EN	BIT(7)
+ #define MVEBU_PM_DDRMC_SRAM_LKG_PD_EN	BIT(6)
+ #define MVEBU_PM_MCI_SRAM_LKG_PD_EN	BIT(5)
+ #define MVEBU_PM_MMC_SRAM_LKG_PD_EN	BIT(4)
+ #define MVEBU_PM_SATA_SRAM_LKG_PD_EN	BIT(3)
+ #define MVEBU_PM_DMA_SRAM_LKG_PD_EN	BIT(2)
+ #define MVEBU_PM_SEC_SRAM_LKG_PD_EN	BIT(1)
+ #define MVEBU_PM_CPU_SRAM_LKG_PD_EN	BIT(0)
+ #define MVEBU_PM_NB_SRAM_LKG_PD_EN	(MVEBU_PM_L2_SRAM_LKG_PD_EN |\
+	MVEBU_PM_EIP_SRAM_LKG_PD_EN | MVEBU_PM_DDRMC_SRAM_LKG_PD_EN |\
+	MVEBU_PM_MCI_SRAM_LKG_PD_EN | MVEBU_PM_MMC_SRAM_LKG_PD_EN |\
+	MVEBU_PM_SATA_SRAM_LKG_PD_EN | MVEBU_PM_DMA_SRAM_LKG_PD_EN |\
+	MVEBU_PM_SEC_SRAM_LKG_PD_EN | MVEBU_PM_CPU_SRAM_LKG_PD_EN)
+#define MVEBU_PM_NB_PWR_DEBUG_REG	(MVEBU_PMSU_REG_BASE + 0xC)
+ #define MVEBU_PM_NB_FORCE_CLK_ON	BIT(30)
+ #define MVEBU_PM_IGNORE_CM3_SLEEP	BIT(21)
+ #define MVEBU_PM_IGNORE_CM3_DEEP	BIT(20)
+#define MVEBU_PM_NB_WAKE_UP_EN_REG	(MVEBU_PMSU_REG_BASE + 0x2C)
+ #define MVEBU_PM_SB_WKP_NB_EN		BIT(31)
+ #define MVEBU_PM_NB_GPIO_WKP_EN	BIT(27)
+ #define MVEBU_PM_SOC_TIMER_WKP_EN	BIT(26)
+ #define MVEBU_PM_UART_WKP_EN		BIT(25)
+ #define MVEBU_PM_UART2_WKP_EN		BIT(19)
+ #define MVEBU_PM_CPU_TIMER_WKP_EN	BIT(17)
+ #define MVEBU_PM_NB_WKP_EN		BIT(16)
+ #define MVEBU_PM_CORE1_FIQ_IRQ_WKP_EN	BIT(13)
+ #define MVEBU_PM_CORE0_FIQ_IRQ_WKP_EN	BIT(12)
+#define MVEBU_PM_CPU_0_PWR_CTRL_REG	(MVEBU_PMSU_REG_BASE + 0x34)
+#define MVEBU_PM_CPU_1_PWR_CTRL_REG	(MVEBU_PMSU_REG_BASE + 0x38)
+ #define MVEBU_PM_CORE_SOC_PD		BIT(2)
+ #define MVEBU_PM_CORE_PROC_PD		BIT(1)
+ #define MVEBU_PM_CORE_PD		BIT(0)
+#define MVEBU_PM_CORE_1_RETURN_ADDR_REG	(MVEBU_PMSU_REG_BASE + 0x44)
+#define MVEBU_PM_CPU_VDD_OFF_INFO_1_REG	(MVEBU_PMSU_REG_BASE + 0x48)
+#define MVEBU_PM_CPU_VDD_OFF_INFO_2_REG	(MVEBU_PMSU_REG_BASE + 0x4C)
+ #define MVEBU_PM_LOW_POWER_STATE	BIT(0)
+#define MVEBU_PM_CPU_WAKE_UP_CONF_REG	(MVEBU_PMSU_REG_BASE + 0x54)
+ #define MVEBU_PM_CORE1_WAKEUP		BIT(13)
+ #define MVEBU_PM_CORE0_WAKEUP		BIT(12)
+#define MVEBU_PM_WAIT_DDR_RDY_VALUE	(0x15)
+#define MVEBU_PM_SB_CPU_PWR_CTRL_REG	(MVEBU_SB_WAKEUP_REG_BASE)
+  #define MVEBU_PM_SB_PM_START		BIT(0)
+#define MVEBU_PM_SB_PWR_OPTION_REG	(MVEBU_SB_WAKEUP_REG_BASE + 0x4)
+  #define MVEBU_PM_SDIO_PHY_PDWN_EN	BIT(17)
+  #define MVEBU_PM_SB_VDDV_OFF_EN	BIT(16)
+  #define MVEBU_PM_EBM_SRAM_LKG_PD_EN		BIT(11)
+  #define MVEBU_PM_PCIE_SRAM_LKG_PD_EN		BIT(10)
+  #define MVEBU_PM_GBE1_TX_SRAM_LKG_PD_EN	BIT(9)
+  #define MVEBU_PM_GBE1_RX_SRAM_LKG_PD_EN	BIT(8)
+  #define MVEBU_PM_GBE1_MIB_SRAM_LKG_PD_EN	BIT(7)
+  #define MVEBU_PM_GBE0_TX_SRAM_LKG_PD_EN	BIT(6)
+  #define MVEBU_PM_GBE0_RX_SRAM_LKG_PD_EN	BIT(5)
+  #define MVEBU_PM_GBE0_MIB_SRAM_LKG_PD_EN	BIT(4)
+  #define MVEBU_PM_SDIO_SRAM_LKG_PD_EN		BIT(3)
+  #define MVEBU_PM_USB2_SRAM_LKG_PD_EN		BIT(2)
+  #define MVEBU_PM_USB3_H_SRAM_LKG_PD_EN	BIT(1)
+  #define MVEBU_PM_SB_SRAM_LKG_PD_EN	(MVEBU_PM_EBM_SRAM_LKG_PD_EN |\
+	MVEBU_PM_PCIE_SRAM_LKG_PD_EN | MVEBU_PM_GBE1_TX_SRAM_LKG_PD_EN |\
+	MVEBU_PM_GBE1_RX_SRAM_LKG_PD_EN | MVEBU_PM_GBE1_MIB_SRAM_LKG_PD_EN |\
+	MVEBU_PM_GBE0_TX_SRAM_LKG_PD_EN | MVEBU_PM_GBE0_RX_SRAM_LKG_PD_EN |\
+	MVEBU_PM_GBE0_MIB_SRAM_LKG_PD_EN | MVEBU_PM_SDIO_SRAM_LKG_PD_EN |\
+	MVEBU_PM_USB2_SRAM_LKG_PD_EN | MVEBU_PM_USB3_H_SRAM_LKG_PD_EN)
+#define MVEBU_PM_SB_WK_EN_REG		(MVEBU_SB_WAKEUP_REG_BASE + 0x10)
+  #define MVEBU_PM_SB_GPIO_WKP_EN	BIT(24)
+  #define MVEBU_PM_SB_WKP_EN		BIT(20)
+
+/* DRAM registers */
+#define MVEBU_DRAM_STATS_CH0_REG	(MVEBU_DRAM_REG_BASE + 0x4)
+ #define MVEBU_DRAM_WCP_EMPTY		BIT(19)
+#define MVEBU_DRAM_CMD_0_REG		(MVEBU_DRAM_REG_BASE + 0x20)
+ #define MVEBU_DRAM_CH0_CMD0		BIT(28)
+ #define MVEBU_DRAM_CS_CMD0		BIT(24)
+ #define MVEBU_DRAM_WCB_DRAIN_REQ	BIT(1)
+#define MVEBU_DRAM_PWR_CTRL_REG		(MVEBU_DRAM_REG_BASE + 0x54)
+ #define MVEBU_DRAM_PHY_CLK_GATING_EN	BIT(1)
+ #define MVEBU_DRAM_PHY_AUTO_AC_OFF_EN	BIT(0)
+
+/* AVS registers */
+#define MVEBU_AVS_CTRL_2_REG		(MVEBU_AVS_REG_BASE + 0x8)
+ #define MVEBU_LOW_VDD_MODE_EN		BIT(6)
+
+/* Clock registers */
+#define MVEBU_NB_CLOCK_SEL_REG		(MVEBU_NB_REGS_BASE + 0x10)
+ #define MVEBU_A53_CPU_CLK_SEL		BIT(15)
+
+/* North Bridge Step-Down Registers */
+#define MVEBU_NB_STEP_DOWN_INT_EN_REG	MVEBU_NB_STEP_DOWN_REG_BASE
+ #define MVEBU_NB_GPIO_INT_WAKE_WCPU_CLK	BIT(8)
+
+#define MVEBU_NB_GPIO_18	18
+#define MVEBU_NB_GPIO_19	19
+#define MVEBU_NB_GPIO_25	25
+#define MVEBU_NB_GPIO_26	26
+
+typedef int (*wake_up_src_func)(union pm_wake_up_src_data *);
+
+struct wake_up_src_func_map {
+	enum pm_wake_up_src_type type;
+	wake_up_src_func func;
+};
+
+void marvell_psci_arch_init(int die_index)
+{
+}
+
+static void a3700_pm_ack_irq(void)
+{
+	uint32_t reg;
+
+	reg = mmio_read_32(MVEBU_NB_IRQ_STATUS_1_REG);
+	if (reg)
+		mmio_write_32(MVEBU_NB_IRQ_STATUS_1_REG, reg);
+
+	reg = mmio_read_32(MVEBU_NB_IRQ_STATUS_2_REG);
+	if (reg)
+		mmio_write_32(MVEBU_NB_IRQ_STATUS_2_REG, reg);
+
+	reg = mmio_read_32(MVEBU_SB_IRQ_STATUS_1_REG);
+	if (reg)
+		mmio_write_32(MVEBU_SB_IRQ_STATUS_1_REG, reg);
+
+	reg = mmio_read_32(MVEBU_SB_IRQ_STATUS_2_REG);
+	if (reg)
+		mmio_write_32(MVEBU_SB_IRQ_STATUS_2_REG, reg);
+
+	reg = mmio_read_32(MVEBU_NB_GPIO_IRQ_STATUS_LOW_REG);
+	if (reg)
+		mmio_write_32(MVEBU_NB_GPIO_IRQ_STATUS_LOW_REG, reg);
+
+	reg = mmio_read_32(MVEBU_NB_GPIO_IRQ_STATUS_HIGH_REG);
+	if (reg)
+		mmio_write_32(MVEBU_NB_GPIO_IRQ_STATUS_HIGH_REG, reg);
+
+	reg = mmio_read_32(MVEBU_SB_GPIO_IRQ_STATUS_REG);
+	if (reg)
+		mmio_write_32(MVEBU_SB_GPIO_IRQ_STATUS_REG, reg);
+}
+
+/*****************************************************************************
+ * A3700 handler called to check the validity of the power state
+ * parameter.
+ *****************************************************************************
+ */
+int a3700_validate_power_state(unsigned int power_state,
+			       psci_power_state_t *req_state)
+{
+	ERROR("%s needs to be implemented\n", __func__);
+	panic();
+}
+
+/*****************************************************************************
+ * A3700 handler called when a CPU is about to enter standby.
+ *****************************************************************************
+ */
+void a3700_cpu_standby(plat_local_state_t cpu_state)
+{
+	ERROR("%s needs to be implemented\n", __func__);
+	panic();
+}
+
+/*****************************************************************************
+ * A3700 handler called when a power domain is about to be turned on. The
+ * mpidr determines the CPU to be turned on.
+ *****************************************************************************
+ */
+int a3700_pwr_domain_on(u_register_t mpidr)
+{
+	/* Set barrier */
+	dsbsy();
+
+	/* Set the cpu start address to BL1 entry point */
+	mmio_write_32(MVEBU_CPU_1_RESET_VECTOR,
+		      PLAT_MARVELL_CPU_ENTRY_ADDR >> 2);
+
+	/* Get the cpu out of reset */
+	mmio_clrbits_32(MVEBU_CPU_1_RESET_REG, BIT(MVEBU_CPU_1_RESET_BIT));
+	mmio_setbits_32(MVEBU_CPU_1_RESET_REG, BIT(MVEBU_CPU_1_RESET_BIT));
+
+	return 0;
+}
+
+/*****************************************************************************
+ * A3700 handler called to validate the entry point.
+ *****************************************************************************
+ */
+int a3700_validate_ns_entrypoint(uintptr_t entrypoint)
+{
+	return PSCI_E_SUCCESS;
+}
+
+/*****************************************************************************
+ * A3700 handler called when a power domain is about to be turned off. The
+ * target_state encodes the power state that each level should transition to.
+ *****************************************************************************
+ */
+void a3700_pwr_domain_off(const psci_power_state_t *target_state)
+{
+	/* Prevent interrupts from spuriously waking up this cpu */
+	plat_marvell_gic_cpuif_disable();
+
+	/* Core can not be powered down with pending IRQ,
+	 * acknowledge all the pending IRQ
+	 */
+	a3700_pm_ack_irq();
+}
+
+static void a3700_set_gen_pwr_off_option(void)
+{
+	/* Enable L2 flush -> processor state-machine option */
+	mmio_setbits_32(MVEBU_PM_NB_CPU_PWR_CTRL_REG, MVEBU_PM_L2_FLUSH_EN);
+
+	/*
+	 * North bridge cannot be VDD off (always ON).
+	 * The NB state machine support low power mode by its state machine.
+	 * This bit MUST be set for north bridge power down, e.g.,
+	 * OSC input cutoff(NOT TEST), SRAM power down, PMIC, etc.
+	 * It is not related to CPU VDD OFF!!
+	 */
+	mmio_clrbits_32(MVEBU_PM_NB_PWR_OPTION_REG, MVEBU_PM_CPU_VDDV_OFF_EN);
+
+	/*
+	 * MUST: Switch CPU/AXI clock to OSC
+	 * NB state machine clock is always connected to OSC (slow clock).
+	 * But Core0/1/processor state machine's clock are connected to AXI
+	 *  clock. Now, AXI clock takes the TBG as clock source.
+	 * If using AXI clock, Core0/1/processor state machine may much faster
+	 * than NB state machine. It will cause problem in this case if cores
+	 * are released before north bridge gets ready.
+	 */
+	mmio_clrbits_32(MVEBU_NB_CLOCK_SEL_REG, MVEBU_A53_CPU_CLK_SEL);
+
+	/*
+	 * These register bits will trigger north bridge
+	 * power-down state machine regardless CM3 status.
+	 */
+	mmio_setbits_32(MVEBU_PM_NB_PWR_DEBUG_REG, MVEBU_PM_IGNORE_CM3_SLEEP);
+	mmio_setbits_32(MVEBU_PM_NB_PWR_DEBUG_REG, MVEBU_PM_IGNORE_CM3_DEEP);
+
+	/*
+	 * SRAM => controlled by north bridge state machine.
+	 * Core VDD OFF is not related to CPU SRAM power down.
+	 */
+	mmio_setbits_32(MVEBU_PM_NB_PWR_OPTION_REG, MVEBU_PM_NB_SRAM_LKG_PD_EN);
+
+	/*
+	 * Idle AXI interface in order to get L2_WFI
+	 * L2 WFI is only asserted after CORE-0 and CORE-1 WFI asserted.
+	 * (only both core-0/1in WFI, L2 WFI will be issued by CORE.)
+	 * Once L2 WFI asserted, this bit is used for signalling assertion
+	 * to AXI IO masters.
+	 */
+	mmio_setbits_32(MVEBU_PM_NB_PWR_CTRL_REG, MVEBU_PM_INTERFACE_IDLE);
+
+	/* Enable core0 and core1 VDD_OFF */
+	mmio_setbits_32(MVEBU_PM_CPU_0_PWR_CTRL_REG, MVEBU_PM_CORE_PD);
+	mmio_setbits_32(MVEBU_PM_CPU_1_PWR_CTRL_REG, MVEBU_PM_CORE_PD);
+
+	/* Enable North bridge power down -
+	 * Both Cores MUST enable this bit to power down north bridge!
+	 */
+	mmio_setbits_32(MVEBU_PM_CPU_0_PWR_CTRL_REG, MVEBU_PM_CORE_SOC_PD);
+	mmio_setbits_32(MVEBU_PM_CPU_1_PWR_CTRL_REG, MVEBU_PM_CORE_SOC_PD);
+
+	/* CA53 (processor domain) power down */
+	mmio_setbits_32(MVEBU_PM_CPU_0_PWR_CTRL_REG, MVEBU_PM_CORE_PROC_PD);
+	mmio_setbits_32(MVEBU_PM_CPU_1_PWR_CTRL_REG, MVEBU_PM_CORE_PROC_PD);
+}
+
+static void a3700_en_ddr_self_refresh(void)
+{
+	/*
+	 * Both count is 16 bits and configurable. By default, osc stb cnt
+	 * is 0xFFF for lower 12 bits.
+	 * Thus, powerdown count is smaller than osc count.
+	 * This count is used for exiting DDR SR mode on wakeup event.
+	 * The powerdown count also has impact on the following
+	 * state changes: idle -> count-down -> ... (power-down, vdd off, etc)
+	 * Here, make stable counter shorter
+	 * Use power down count value instead of osc_stb_cnt to speed up
+	 * DDR self refresh exit
+	 */
+	mmio_setbits_32(MVEBU_PM_NB_PWR_CTRL_REG, MVEBU_PM_PWR_DN_CNT_SEL);
+
+	/*
+	 * Enable DDR SR mode => controlled by north bridge state machine
+	 * Therefore, we must powerdown north bridge to trigger the DDR SR
+	 * mode switching.
+	 */
+	mmio_setbits_32(MVEBU_PM_NB_PWR_OPTION_REG, MVEBU_PM_DDR_SR_EN);
+	/* Disable DDR clock, otherwise DDR will not enter into SR mode. */
+	mmio_setbits_32(MVEBU_PM_NB_PWR_OPTION_REG, MVEBU_PM_DDR_CLK_DIS_EN);
+	/* Power down DDR PHY (PAD) */
+	mmio_setbits_32(MVEBU_PM_NB_PWR_OPTION_REG, MVEBU_PM_DDRPHY_PWRDWN_EN);
+	mmio_setbits_32(MVEBU_PM_NB_PWR_OPTION_REG,
+			MVEBU_PM_DDRPHY_PAD_PWRDWN_EN);
+
+	/* Set wait time for DDR ready in ROM code */
+	mmio_write_32(MVEBU_PM_CPU_VDD_OFF_INFO_1_REG,
+		      MVEBU_PM_WAIT_DDR_RDY_VALUE);
+
+	/* DDR flush write buffer - mandatory */
+	mmio_write_32(MVEBU_DRAM_CMD_0_REG, MVEBU_DRAM_CH0_CMD0 |
+		      MVEBU_DRAM_CS_CMD0 | MVEBU_DRAM_WCB_DRAIN_REQ);
+	while ((mmio_read_32(MVEBU_DRAM_STATS_CH0_REG) &
+			     MVEBU_DRAM_WCP_EMPTY) != MVEBU_DRAM_WCP_EMPTY)
+		;
+
+	/* Trigger PHY reset after ddr out of self refresh =>
+	 * supply reset pulse for DDR phy after wake up
+	 */
+	mmio_setbits_32(MVEBU_DRAM_PWR_CTRL_REG, MVEBU_DRAM_PHY_CLK_GATING_EN |
+						 MVEBU_DRAM_PHY_AUTO_AC_OFF_EN);
+}
+
+static void a3700_pwr_dn_avs(void)
+{
+	/*
+	 * AVS power down - controlled by north bridge statemachine
+	 * Enable AVS power down by clear the AVS disable bit.
+	 */
+	mmio_clrbits_32(MVEBU_PM_NB_PWR_OPTION_REG, MVEBU_PM_AVS_DISABLE_MODE);
+	/*
+	 * Should set BIT[12:13] to powerdown AVS.
+	 * 1. Enable AVS VDD2 mode
+	 * 2. After power down AVS, we must hold AVS output voltage.
+	 * 3. We can choose the lower VDD for AVS power down.
+	 */
+	mmio_setbits_32(MVEBU_PM_NB_PWR_OPTION_REG, MVEBU_PM_AVS_VDD2_MODE);
+	mmio_setbits_32(MVEBU_PM_NB_PWR_OPTION_REG, MVEBU_PM_AVS_HOLD_MODE);
+
+	/* Enable low VDD mode, AVS will set CPU to lowest core VDD 747mV */
+	mmio_setbits_32(MVEBU_AVS_CTRL_2_REG, MVEBU_LOW_VDD_MODE_EN);
+}
+
+static void a3700_pwr_dn_tbg(void)
+{
+	/* Power down TBG */
+	mmio_setbits_32(MVEBU_PM_NB_PWR_OPTION_REG, MVEBU_PM_TBG_OFF_EN);
+}
+
+static void a3700_pwr_dn_sb(void)
+{
+	/* Enable south bridge power down option */
+	mmio_setbits_32(MVEBU_PM_NB_PWR_CTRL_REG, MVEBU_PM_SB_PWR_DWN);
+
+	/* Enable SDIO_PHY_PWRDWN */
+	mmio_setbits_32(MVEBU_PM_SB_PWR_OPTION_REG, MVEBU_PM_SDIO_PHY_PDWN_EN);
+
+	/* Enable SRAM LRM on SB */
+	mmio_setbits_32(MVEBU_PM_SB_PWR_OPTION_REG, MVEBU_PM_SB_SRAM_LKG_PD_EN);
+
+	/* Enable SB Power Off */
+	mmio_setbits_32(MVEBU_PM_SB_PWR_OPTION_REG, MVEBU_PM_SB_VDDV_OFF_EN);
+
+	/* Kick off South Bridge Power Off */
+	mmio_setbits_32(MVEBU_PM_SB_CPU_PWR_CTRL_REG, MVEBU_PM_SB_PM_START);
+}
+
+static void a3700_set_pwr_off_option(void)
+{
+	/* Set general power off option */
+	a3700_set_gen_pwr_off_option();
+
+	/* Enable DDR self refresh in low power mode */
+	a3700_en_ddr_self_refresh();
+
+	/* Power down AVS */
+	a3700_pwr_dn_avs();
+
+	/* Power down TBG */
+	a3700_pwr_dn_tbg();
+
+	/* Power down south bridge, pay attention south bridge setting
+	 * should be done before
+	 */
+	a3700_pwr_dn_sb();
+}
+
+static void a3700_set_wake_up_option(void)
+{
+	/*
+	 * Enable the wakeup event for NB SOC => north-bridge
+	 * state-machine enablement on wake-up event
+	 */
+	mmio_setbits_32(MVEBU_PM_NB_WAKE_UP_EN_REG, MVEBU_PM_NB_WKP_EN);
+
+	 /* Enable both core0 and core1 wakeup on demand */
+	mmio_setbits_32(MVEBU_PM_CPU_WAKE_UP_CONF_REG,
+			MVEBU_PM_CORE1_WAKEUP | MVEBU_PM_CORE0_WAKEUP);
+
+	/* Enable warm reset in low power mode */
+	mmio_setbits_32(MVEBU_PM_NB_PWR_OPTION_REG, MVEBU_PM_WARM_RESET_EN);
+}
+
+static void a3700_pm_en_nb_gpio(uint32_t gpio)
+{
+	/* For GPIO1 interrupt -- North bridge only */
+	if (gpio >= 32) {
+		/* GPIO int mask */
+		mmio_clrbits_32(MVEBU_NB_GPIO_IRQ_MASK_2_REG, BIT(gpio - 32));
+
+		/* NB_CPU_WAKE-up ENABLE GPIO int */
+		mmio_setbits_32(MVEBU_NB_GPIO_IRQ_EN_HIGH_REG, BIT(gpio - 32));
+	} else {
+		/* GPIO int mask */
+		mmio_clrbits_32(MVEBU_NB_GPIO_IRQ_MASK_1_REG, BIT(gpio));
+
+		/* NB_CPU_WAKE-up ENABLE GPIO int */
+		mmio_setbits_32(MVEBU_NB_GPIO_IRQ_EN_LOW_REG, BIT(gpio));
+	}
+
+	mmio_setbits_32(MVEBU_NB_STEP_DOWN_INT_EN_REG,
+			MVEBU_NB_GPIO_INT_WAKE_WCPU_CLK);
+
+	/* Enable using GPIO as wakeup event
+	 * (actually not only for north bridge)
+	 */
+	mmio_setbits_32(MVEBU_PM_NB_WAKE_UP_EN_REG, MVEBU_PM_NB_GPIO_WKP_EN |
+		MVEBU_PM_NB_WKP_EN | MVEBU_PM_CORE1_FIQ_IRQ_WKP_EN |
+		MVEBU_PM_CORE0_FIQ_IRQ_WKP_EN);
+}
+
+static void a3700_pm_en_sb_gpio(uint32_t gpio)
+{
+	/* Enable using GPIO as wakeup event */
+	mmio_setbits_32(MVEBU_PM_NB_WAKE_UP_EN_REG, MVEBU_PM_SB_WKP_NB_EN |
+		MVEBU_PM_NB_WKP_EN | MVEBU_PM_CORE1_FIQ_IRQ_WKP_EN |
+		MVEBU_PM_CORE0_FIQ_IRQ_WKP_EN);
+
+	/* SB GPIO Wake UP | South Bridge Wake Up Enable */
+	mmio_setbits_32(MVEBU_PM_SB_WK_EN_REG, MVEBU_PM_SB_GPIO_WKP_EN |
+			MVEBU_PM_SB_GPIO_WKP_EN);
+
+	/* GPIO int mask */
+	mmio_clrbits_32(MVEBU_SB_GPIO_IRQ_MASK_REG, BIT(gpio));
+
+	/* NB_CPU_WAKE-up ENABLE GPIO int */
+	mmio_setbits_32(MVEBU_SB_GPIO_IRQ_EN_REG, BIT(gpio));
+}
+
+int a3700_pm_src_gpio(union pm_wake_up_src_data *src_data)
+{
+	if (src_data->gpio_data.bank_num == 0)
+		/* North Bridge GPIO */
+		a3700_pm_en_nb_gpio(src_data->gpio_data.gpio_num);
+	else
+		a3700_pm_en_sb_gpio(src_data->gpio_data.gpio_num);
+	return 0;
+}
+
+int a3700_pm_src_uart1(union pm_wake_up_src_data *src_data)
+{
+	/* Clear Uart1 select */
+	mmio_clrbits_32(MVEBU_NB_GPIO1_SEL_REG, MVEBU_NB_GPIO1_UART1_SEL);
+	/* set pin 19 gpio usage*/
+	mmio_setbits_32(MVEBU_NB_GPIO1_SEL_REG, MVEBU_NB_GPIO1_GPIO_19_EN);
+	/* Enable gpio wake-up*/
+	a3700_pm_en_nb_gpio(MVEBU_NB_GPIO_19);
+	/* set pin 18 gpio usage*/
+	mmio_setbits_32(MVEBU_NB_GPIO1_SEL_REG, MVEBU_NB_GPIO1_GPIO_18_EN);
+	/* Enable gpio wake-up*/
+	a3700_pm_en_nb_gpio(MVEBU_NB_GPIO_18);
+
+	return 0;
+}
+
+int a3700_pm_src_uart0(union pm_wake_up_src_data *src_data)
+{
+	/* set pin 25/26 gpio usage*/
+	mmio_setbits_32(MVEBU_NB_GPIO1_SEL_REG, MVEBU_NB_GPIO1_GPIO_25_26_EN);
+	/* Enable gpio wake-up*/
+	a3700_pm_en_nb_gpio(MVEBU_NB_GPIO_25);
+	/* Enable gpio wake-up*/
+	a3700_pm_en_nb_gpio(MVEBU_NB_GPIO_26);
+
+	return 0;
+}
+
+struct wake_up_src_func_map src_func_table[WAKE_UP_SRC_MAX] = {
+	{WAKE_UP_SRC_GPIO, a3700_pm_src_gpio},
+	{WAKE_UP_SRC_UART1, a3700_pm_src_uart1},
+	{WAKE_UP_SRC_UART0, a3700_pm_src_uart0},
+	/* FOLLOWING SRC NOT SUPPORTED YET */
+	{WAKE_UP_SRC_TIMER, NULL}
+};
+
+static wake_up_src_func a3700_get_wake_up_src_func(
+						  enum pm_wake_up_src_type type)
+{
+	uint32_t loop;
+
+	for (loop = 0; loop < WAKE_UP_SRC_MAX; loop++) {
+		if (src_func_table[loop].type == type)
+			return src_func_table[loop].func;
+	}
+	return NULL;
+}
+
+#pragma weak mv_wake_up_src_config_get
+struct pm_wake_up_src_config *mv_wake_up_src_config_get(void)
+{
+	static struct pm_wake_up_src_config wake_up_src_cfg = {};
+	return &wake_up_src_cfg;
+}
+
+static void a3700_set_wake_up_source(void)
+{
+	struct pm_wake_up_src_config *wake_up_src;
+	uint32_t loop;
+	wake_up_src_func src_func = NULL;
+
+	wake_up_src = mv_wake_up_src_config_get();
+	for (loop = 0; loop < wake_up_src->wake_up_src_num; loop++) {
+		src_func = a3700_get_wake_up_src_func(
+			   wake_up_src->wake_up_src[loop].wake_up_src_type);
+		if (src_func)
+			src_func(
+				&(wake_up_src->wake_up_src[loop].wake_up_data));
+	}
+}
+
+static void a3700_pm_save_lp_flag(void)
+{
+	/* Save the flag for enter the low power mode */
+	mmio_setbits_32(MVEBU_PM_CPU_VDD_OFF_INFO_2_REG,
+			MVEBU_PM_LOW_POWER_STATE);
+}
+
+static void a3700_pm_clear_lp_flag(void)
+{
+	/* Clear the flag for enter the low power mode */
+	mmio_clrbits_32(MVEBU_PM_CPU_VDD_OFF_INFO_2_REG,
+			MVEBU_PM_LOW_POWER_STATE);
+}
+
+static uint32_t a3700_pm_get_lp_flag(void)
+{
+	/* Get the flag for enter the low power mode */
+	return mmio_read_32(MVEBU_PM_CPU_VDD_OFF_INFO_2_REG) &
+			    MVEBU_PM_LOW_POWER_STATE;
+}
+
+/*****************************************************************************
+ * A3700 handler called when a power domain is about to be suspended. The
+ * target_state encodes the power state that each level should transition to.
+ *****************************************************************************
+ */
+void a3700_pwr_domain_suspend(const psci_power_state_t *target_state)
+{
+	/* Prevent interrupts from spuriously waking up this cpu */
+	plat_marvell_gic_cpuif_disable();
+
+	/* Save IRQ states */
+	plat_marvell_gic_irq_save();
+
+	/* Set wake up options */
+	a3700_set_wake_up_option();
+
+	/* Set wake up sources */
+	a3700_set_wake_up_source();
+
+	/* SoC can not be powered down with pending IRQ,
+	 * acknowledge all the pending IRQ
+	 */
+	a3700_pm_ack_irq();
+
+	/* Set power off options */
+	a3700_set_pwr_off_option();
+
+	/* Save the flag for enter the low power mode */
+	a3700_pm_save_lp_flag();
+
+	isb();
+}
+
+/*****************************************************************************
+ * A3700 handler called when a power domain has just been powered on after
+ * being turned off earlier. The target_state encodes the low power state that
+ * each level has woken up from.
+ *****************************************************************************
+ */
+void a3700_pwr_domain_on_finish(const psci_power_state_t *target_state)
+{
+	/* arch specific configuration */
+	marvell_psci_arch_init(0);
+
+	/* Per-CPU interrupt initialization */
+	plat_marvell_gic_pcpu_init();
+	plat_marvell_gic_cpuif_enable();
+
+	/* Restore the per-cpu IRQ state */
+	if (a3700_pm_get_lp_flag())
+		plat_marvell_gic_irq_pcpu_restore();
+}
+
+/*****************************************************************************
+ * A3700 handler called when a power domain has just been powered on after
+ * having been suspended earlier. The target_state encodes the low power state
+ * that each level has woken up from.
+ * TODO: At the moment we reuse the on finisher and reinitialize the secure
+ * context. Need to implement a separate suspend finisher.
+ *****************************************************************************
+ */
+void a3700_pwr_domain_suspend_finish(const psci_power_state_t *target_state)
+{
+	struct dec_win_config *io_dec_map;
+	uint32_t dec_win_num;
+	struct dram_win_map dram_wins_map;
+
+	/* arch specific configuration */
+	marvell_psci_arch_init(0);
+
+	/* Interrupt initialization */
+	plat_marvell_gic_init();
+
+	/* Restore IRQ states */
+	plat_marvell_gic_irq_restore();
+
+	/*
+	 * Initialize CCI for this cluster after resume from suspend state.
+	 * No need for locks as no other CPU is active.
+	 */
+	plat_marvell_interconnect_init();
+	/*
+	 * Enable CCI coherency for the primary CPU's cluster.
+	 * Platform specific PSCI code will enable coherency for other
+	 * clusters.
+	 */
+	plat_marvell_interconnect_enter_coherency();
+
+	/* CPU address decoder windows initialization. */
+	cpu_wins_init();
+
+	/* fetch CPU-DRAM window mapping information by reading
+	 * CPU-DRAM decode windows (only the enabled ones)
+	 */
+	dram_win_map_build(&dram_wins_map);
+
+	/* Get IO address decoder windows */
+	if (marvell_get_io_dec_win_conf(&io_dec_map, &dec_win_num)) {
+		printf("No IO address decoder windows configurations found!\n");
+		return;
+	}
+
+	/* IO address decoder init */
+	if (init_io_addr_dec(&dram_wins_map, io_dec_map, dec_win_num)) {
+		printf("IO address decoder windows initialization failed!\n");
+		return;
+	}
+
+	/* Clear low power mode flag */
+	a3700_pm_clear_lp_flag();
+}
+
+/*****************************************************************************
+ * This handler is called by the PSCI implementation during the `SYSTEM_SUSPEND
+ * call to get the `power_state` parameter. This allows the platform to encode
+ * the appropriate State-ID field within the `power_state` parameter which can
+ * be utilized in `pwr_domain_suspend()` to suspend to system affinity level.
+ *****************************************************************************
+ */
+void a3700_get_sys_suspend_power_state(psci_power_state_t *req_state)
+{
+	/* lower affinities use PLAT_MAX_OFF_STATE */
+	for (int i = MPIDR_AFFLVL0; i <= PLAT_MAX_PWR_LVL; i++)
+		req_state->pwr_domain_state[i] = PLAT_MAX_OFF_STATE;
+}
+
+/*****************************************************************************
+ * A3700 handlers to shutdown/reboot the system
+ *****************************************************************************
+ */
+static void __dead2 a3700_system_off(void)
+{
+	ERROR("%s needs to be implemented\n", __func__);
+	panic();
+}
+
+#pragma weak cm3_system_reset
+void cm3_system_reset(void)
+{
+}
+
+/*****************************************************************************
+ * A3700 handlers to reset the system
+ *****************************************************************************
+ */
+static void __dead2 a3700_system_reset(void)
+{
+	/* Clean the mailbox magic number to let it as act like cold boot */
+	mmio_write_32(PLAT_MARVELL_MAILBOX_BASE, 0x0);
+
+	dsbsy();
+
+	/* Flush data cache if the mail box shared RAM is cached */
+#if PLAT_MARVELL_SHARED_RAM_CACHED
+	flush_dcache_range((uintptr_t)PLAT_MARVELL_MAILBOX_BASE,
+			   2 * sizeof(uint64_t));
+#endif
+
+	/* Use Cortex-M3 secure coprocessor for system reset */
+	cm3_system_reset();
+
+	/* Trigger the warm reset */
+	mmio_write_32(MVEBU_WARM_RESET_REG, MVEBU_WARM_RESET_MAGIC);
+
+	/* Shouldn't get to this point */
+	panic();
+}
+
+/*****************************************************************************
+ * Export the platform handlers via plat_arm_psci_pm_ops. The ARM Standard
+ * platform layer will take care of registering the handlers with PSCI.
+ *****************************************************************************
+ */
+const plat_psci_ops_t plat_arm_psci_pm_ops = {
+	.cpu_standby = a3700_cpu_standby,
+	.pwr_domain_on = a3700_pwr_domain_on,
+	.pwr_domain_off = a3700_pwr_domain_off,
+	.pwr_domain_suspend = a3700_pwr_domain_suspend,
+	.pwr_domain_on_finish = a3700_pwr_domain_on_finish,
+	.pwr_domain_suspend_finish = a3700_pwr_domain_suspend_finish,
+	.get_sys_suspend_power_state = a3700_get_sys_suspend_power_state,
+	.system_off = a3700_system_off,
+	.system_reset = a3700_system_reset,
+	.validate_power_state = a3700_validate_power_state,
+	.validate_ns_entrypoint = a3700_validate_ns_entrypoint
+};