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

source/trusted-firmware/trusted-firmware-a-2.8/plat/allwinner/common/sunxi_pm.c

@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2017-2021, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+
+#include <platform_def.h>
+
+#include <common/debug.h>
+#include <common/fdt_fixup.h>
+#include <lib/mmio.h>
+#include <lib/psci/psci.h>
+
+#include <sunxi_cpucfg.h>
+#include <sunxi_private.h>
+
+static bool psci_is_scpi;
+
+#if SUNXI_PSCI_USE_SCPI
+bool sunxi_psci_is_scpi(void)
+{
+	return psci_is_scpi;
+}
+#endif
+
+int sunxi_validate_ns_entrypoint(uintptr_t ns_entrypoint)
+{
+	/* The non-secure entry point must be in DRAM */
+	if (ns_entrypoint < SUNXI_DRAM_BASE) {
+		return PSCI_E_INVALID_ADDRESS;
+	}
+
+	return PSCI_E_SUCCESS;
+}
+
+int plat_setup_psci_ops(uintptr_t sec_entrypoint,
+			const plat_psci_ops_t **psci_ops)
+{
+	assert(psci_ops);
+
+	/* Program all CPU entry points. */
+	for (unsigned int cpu = 0; cpu < PLATFORM_CORE_COUNT; ++cpu) {
+		mmio_write_32(SUNXI_CPUCFG_RVBAR_LO_REG(cpu),
+			      sec_entrypoint & 0xffffffff);
+		mmio_write_32(SUNXI_CPUCFG_RVBAR_HI_REG(cpu),
+			      sec_entrypoint >> 32);
+	}
+
+	if (sunxi_set_scpi_psci_ops(psci_ops) == 0) {
+		INFO("PSCI: Suspend is available via SCPI\n");
+		psci_is_scpi = true;
+	} else {
+		INFO("PSCI: Suspend is unavailable\n");
+		sunxi_set_native_psci_ops(psci_ops);
+	}
+
+	return 0;
+}