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

source/trusted-firmware/trusted-firmware-a-2.8/plat/marvell/armada/common/marvell_pm.c

@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2018 Marvell International Ltd.
+ *
+ * SPDX-License-Identifier:     BSD-3-Clause
+ * https://spdx.org/licenses
+ */
+
+#include <assert.h>
+
+#include <arch_helpers.h>
+#include <lib/psci/psci.h>
+
+#include <marvell_pm.h>
+
+/* Standard ARM platforms are expected to export plat_arm_psci_pm_ops */
+extern const plat_psci_ops_t plat_arm_psci_pm_ops;
+
+/*****************************************************************************
+ * Private function to program the mailbox for a cpu before it is released
+ * from reset. This function assumes that the mail box base is within
+ * the MARVELL_SHARED_RAM region
+ *****************************************************************************
+ */
+void marvell_program_mailbox(uintptr_t address)
+{
+	uintptr_t *mailbox = (void *)PLAT_MARVELL_MAILBOX_BASE;
+
+	/*
+	 * Ensure that the PLAT_MARVELL_MAILBOX_BASE is within
+	 * MARVELL_SHARED_RAM region.
+	 */
+	assert((PLAT_MARVELL_MAILBOX_BASE >= MARVELL_SHARED_RAM_BASE) &&
+	       ((PLAT_MARVELL_MAILBOX_BASE + sizeof(*mailbox)) <=
+	       (MARVELL_SHARED_RAM_BASE + MARVELL_SHARED_RAM_SIZE)));
+
+	mailbox[MBOX_IDX_MAGIC] = MVEBU_MAILBOX_MAGIC_NUM;
+	mailbox[MBOX_IDX_SEC_ADDR] = address;
+
+	/* 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 +
+			   8 * MBOX_IDX_MAGIC,
+			   2 * sizeof(uint64_t));
+#endif
+}
+
+/*****************************************************************************
+ * The ARM Standard platform definition of platform porting API
+ * `plat_setup_psci_ops`.
+ *****************************************************************************
+ */
+int plat_setup_psci_ops(uintptr_t sec_entrypoint,
+			const plat_psci_ops_t **psci_ops)
+{
+	*psci_ops = &plat_arm_psci_pm_ops;
+
+	/* Setup mailbox with entry point. */
+	marvell_program_mailbox(sec_entrypoint);
+	return 0;
+}