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, 173 insertions, 0 deletions

diff --git a/plat/hisilicon/poplar/plat_pm.c b/plat/hisilicon/poplar/plat_pm.c
new file mode 100644
index 0000000..67ebca1
--- /dev/null
+++ b/plat/hisilicon/poplar/plat_pm.c
@@ -0,0 +1,173 @@
+/*
+ * Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+
+#include <platform_def.h>
+
+#include <arch_helpers.h>
+#include <common/bl_common.h>
+#include <common/debug.h>
+#include <context.h>
+#include <lib/el3_runtime/context_mgmt.h>
+#include <lib/mmio.h>
+#include <lib/psci/psci.h>
+#include <plat/common/platform.h>
+
+#include "hi3798cv200.h"
+#include "plat_private.h"
+
+#define REG_PERI_CPU_RVBARADDR		0xF8A80034
+#define REG_PERI_CPU_AARCH_MODE		0xF8A80030
+
+#define REG_CPU_LP_CPU_SW_BEGIN		10
+#define CPU_REG_COREPO_SRST		12
+#define CPU_REG_CORE_SRST		8
+
+static void poplar_cpu_standby(plat_local_state_t cpu_state)
+{
+	dsb();
+	wfi();
+}
+
+static int poplar_pwr_domain_on(u_register_t mpidr)
+{
+	unsigned int cpu = plat_core_pos_by_mpidr(mpidr);
+	unsigned int regval, regval_bak;
+
+	/* Select 400MHz before start slave cores */
+	regval_bak = mmio_read_32((uintptr_t)(REG_BASE_CRG + REG_CPU_LP));
+	mmio_write_32((uintptr_t)(REG_BASE_CRG + REG_CPU_LP), 0x206);
+	mmio_write_32((uintptr_t)(REG_BASE_CRG + REG_CPU_LP), 0x606);
+
+	/* Clear the slave cpu arm_por_srst_req reset */
+	regval = mmio_read_32((uintptr_t)(REG_BASE_CRG + REG_CPU_RST));
+	regval &= ~(1 << (cpu + CPU_REG_COREPO_SRST));
+	mmio_write_32((uintptr_t)(REG_BASE_CRG + REG_CPU_RST), regval);
+
+	/* Clear the slave cpu reset */
+	regval = mmio_read_32((uintptr_t)(REG_BASE_CRG + REG_CPU_RST));
+	regval &= ~(1 << (cpu + CPU_REG_CORE_SRST));
+	mmio_write_32((uintptr_t)(REG_BASE_CRG + REG_CPU_RST), regval);
+
+	/* Restore cpu frequency */
+	regval = regval_bak & (~(1 << REG_CPU_LP_CPU_SW_BEGIN));
+	mmio_write_32((uintptr_t)(REG_BASE_CRG + REG_CPU_LP), regval);
+	mmio_write_32((uintptr_t)(REG_BASE_CRG + REG_CPU_LP), regval_bak);
+
+	return PSCI_E_SUCCESS;
+}
+
+static void poplar_pwr_domain_off(const psci_power_state_t *target_state)
+{
+	assert(0);
+}
+
+static void poplar_pwr_domain_suspend(const psci_power_state_t *target_state)
+{
+	assert(0);
+}
+
+static void poplar_pwr_domain_on_finish(const psci_power_state_t *target_state)
+{
+	assert(target_state->pwr_domain_state[MPIDR_AFFLVL0] ==
+					PLAT_MAX_OFF_STATE);
+
+	/* Enable the gic cpu interface */
+	poplar_gic_pcpu_init();
+
+	/* Program the gic per-cpu distributor or re-distributor interface */
+	poplar_gic_cpuif_enable();
+}
+
+static void poplar_pwr_domain_suspend_finish(
+		const psci_power_state_t *target_state)
+{
+	assert(0);
+}
+
+static void __dead2 poplar_system_off(void)
+{
+	ERROR("Poplar System Off: operation not handled.\n");
+	panic();
+}
+
+static void __dead2 poplar_system_reset(void)
+{
+	mmio_write_32((uintptr_t)(HISI_WDG0_BASE + 0xc00), 0x1ACCE551);
+	mmio_write_32((uintptr_t)(HISI_WDG0_BASE + 0x0),   0x00000100);
+	mmio_write_32((uintptr_t)(HISI_WDG0_BASE + 0x8),   0x00000003);
+
+	wfi();
+	ERROR("Poplar System Reset: operation not handled.\n");
+	panic();
+}
+
+static int32_t poplar_validate_power_state(unsigned int power_state,
+					   psci_power_state_t *req_state)
+{
+	VERBOSE("%s: power_state: 0x%x\n", __func__, power_state);
+
+	int pstate = psci_get_pstate_type(power_state);
+
+	assert(req_state);
+
+	/* Sanity check the requested state */
+	if (pstate == PSTATE_TYPE_STANDBY)
+		req_state->pwr_domain_state[MPIDR_AFFLVL0] = PLAT_MAX_RET_STATE;
+	else
+		req_state->pwr_domain_state[MPIDR_AFFLVL0] = PLAT_MAX_OFF_STATE;
+
+	/* We expect the 'state id' to be zero */
+	if (psci_get_pstate_id(power_state))
+		return PSCI_E_INVALID_PARAMS;
+
+	return PSCI_E_SUCCESS;
+}
+
+static int poplar_validate_ns_entrypoint(uintptr_t entrypoint)
+{
+	/*
+	 * Check if the non secure entrypoint lies within the non
+	 * secure DRAM.
+	 */
+	if ((entrypoint >= DDR_BASE) && (entrypoint < (DDR_BASE + DDR_SIZE)))
+		return PSCI_E_SUCCESS;
+
+	return PSCI_E_INVALID_ADDRESS;
+}
+
+static void poplar_get_sys_suspend_power_state(psci_power_state_t *req_state)
+{
+	int i;
+
+	for (i = MPIDR_AFFLVL0; i <= PLAT_MAX_PWR_LVL; i++)
+		req_state->pwr_domain_state[i] = PLAT_MAX_OFF_STATE;
+}
+
+static const plat_psci_ops_t poplar_plat_psci_ops = {
+	.cpu_standby			= poplar_cpu_standby,
+	.pwr_domain_on			= poplar_pwr_domain_on,
+	.pwr_domain_off			= poplar_pwr_domain_off,
+	.pwr_domain_suspend		= poplar_pwr_domain_suspend,
+	.pwr_domain_on_finish		= poplar_pwr_domain_on_finish,
+	.pwr_domain_suspend_finish	= poplar_pwr_domain_suspend_finish,
+	.system_off			= poplar_system_off,
+	.system_reset			= poplar_system_reset,
+	.validate_power_state		= poplar_validate_power_state,
+	.validate_ns_entrypoint		= poplar_validate_ns_entrypoint,
+	.get_sys_suspend_power_state	= poplar_get_sys_suspend_power_state,
+};
+
+int plat_setup_psci_ops(uintptr_t sec_entrypoint,
+			const plat_psci_ops_t **psci_ops)
+{
+	*psci_ops = &poplar_plat_psci_ops;
+
+	mmio_write_32((uintptr_t)REG_PERI_CPU_AARCH_MODE, 0xF);
+	mmio_write_32((uintptr_t)REG_PERI_CPU_RVBARADDR, sec_entrypoint);
+	return 0;
+}