GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/trusted-firmware/trusted-firmware-a-2.8/plat/qti/msm8916/msm8916_pm.c

@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2021, Stephan Gerhold <stephan@gerhold.net>
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch.h>
+#include <common/debug.h>
+#include <drivers/arm/gicv2.h>
+#include <drivers/delay_timer.h>
+#include <lib/mmio.h>
+#include <lib/psci/psci.h>
+#include <plat/common/platform.h>
+
+#include <msm8916_mmap.h>
+#include "msm8916_pm.h"
+
+static int msm8916_pwr_domain_on(u_register_t mpidr)
+{
+	unsigned int core = MPIDR_AFFLVL0_VAL(mpidr);
+
+	VERBOSE("PSCI: Booting CPU %d\n", core);
+	msm8916_cpu_boot(core);
+
+	return PSCI_E_SUCCESS;
+}
+
+static void msm8916_pwr_domain_on_finish(const psci_power_state_t *target_state)
+{
+	gicv2_pcpu_distif_init();
+	gicv2_cpuif_enable();
+}
+
+static void __dead2 msm8916_system_reset(void)
+{
+	mmio_write_32(MPM_PS_HOLD, 0);
+	mdelay(1000);
+
+	ERROR("PSCI: System reset failed\n");
+	panic();
+}
+
+static const plat_psci_ops_t msm8916_psci_ops = {
+	.pwr_domain_on			= msm8916_pwr_domain_on,
+	.pwr_domain_on_finish		= msm8916_pwr_domain_on_finish,
+	.system_off			= msm8916_system_reset,
+	.system_reset			= msm8916_system_reset,
+};
+
+/* Defined and used in msm8916_helpers.S */
+extern uintptr_t msm8916_entry_point;
+
+int plat_setup_psci_ops(uintptr_t sec_entrypoint,
+			const plat_psci_ops_t **psci_ops)
+{
+	msm8916_entry_point = sec_entrypoint;
+	*psci_ops = &msm8916_psci_ops;
+	return 0;
+}