1 files changed, 61 insertions, 0 deletions
diff --git a/plat/common/aarch64/platform_mp_stack.S b/plat/common/aarch64/platform_mp_stack.S
new file mode 100644
index 0000000..fa1ca22
--- /dev/null
+++ b/plat/common/aarch64/platform_mp_stack.S
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2014-2020, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch.h>
+#include <asm_macros.S>
+#include <assert_macros.S>
+#include <platform_def.h>
+
+	.local	platform_normal_stacks
+	.weak	plat_get_my_stack
+	.weak	plat_set_my_stack
+
+	/* ---------------------------------------------------------------------
+	 * When the compatibility layer is disabled, the platform APIs
+	 * plat_get_my_stack() and plat_set_my_stack() are supported by the
+	 * platform and the previous APIs platform_get_stack() and
+	 * platform_set_stack() are defined in terms of new APIs making use of
+	 * the fact that they are only ever invoked for the current CPU.  This
+	 * is to enable components of Trusted Firmware like SPDs using the old
+	 * platform APIs to continue to work.
+	 * --------------------------------------------------------------------
+	 */
+
+	/* -----------------------------------------------------
+	 * uintptr_t plat_get_my_stack ()
+	 *
+	 * For the current CPU, this function returns the stack
+	 * pointer for a stack allocated in device memory.
+	 * -----------------------------------------------------
+	 */
+func plat_get_my_stack
+	mov	x10, x30
+	get_my_mp_stack platform_normal_stacks, PLATFORM_STACK_SIZE
+	ret	x10
+endfunc plat_get_my_stack
+
+	/* -----------------------------------------------------
+	 * void plat_set_my_stack ()
+	 *
+	 * For the current CPU, this function sets the stack
+	 * pointer to a stack allocated in normal memory.
+	 * -----------------------------------------------------
+	 */
+func plat_set_my_stack
+	mov	x9, x30
+	bl 	plat_get_my_stack
+	mov	sp, x0
+	ret	x9
+endfunc plat_set_my_stack
+
+	/* -----------------------------------------------------
+	 * Per-CPU stacks in normal memory. Each CPU gets a
+	 * stack of PLATFORM_STACK_SIZE bytes.
+	 * -----------------------------------------------------
+	 */
+declare_stack platform_normal_stacks, .tzfw_normal_stacks, \
+		PLATFORM_STACK_SIZE, PLATFORM_CORE_COUNT, \
+		CACHE_WRITEBACK_GRANULE