Push old Amlogic BL2 sourcesHEADmaster

1 files changed, 102 insertions, 0 deletions

diff --git a/plat/common/aarch64/platform_mp_stack.S b/plat/common/aarch64/platform_mp_stack.S
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+/*
+ * Copyright (c) 2014, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <arch.h>
+#include <asm_macros.S>
+#include <platform_def.h>
+
+
+	.local	pcpu_dv_mem_stack
+	.local	platform_normal_stacks
+	.weak	platform_set_stack
+	.weak	platform_get_stack
+	.weak	platform_set_coherent_stack
+
+
+	/* -----------------------------------------------------
+	 * void platform_set_coherent_stack (unsigned long mpidr)
+	 *
+	 * For a given CPU, this function sets the stack pointer
+	 * to a stack allocated in device memory. This stack can
+	 * be used by C code which enables/disables the SCTLR.M
+	 * SCTLR.C bit e.g. while powering down a cpu
+	 * -----------------------------------------------------
+	 */
+func platform_set_coherent_stack
+	mov x5, x30 // lr
+	get_mp_stack pcpu_dv_mem_stack, PCPU_DV_MEM_STACK_SIZE
+	mov sp, x0
+	ret x5
+
+	/* -----------------------------------------------------
+	 * unsigned long platform_get_stack (unsigned long mpidr)
+	 *
+	 * For a given CPU, this function returns the stack
+	 * pointer for a stack allocated in device memory.
+	 * -----------------------------------------------------
+	 */
+func platform_get_stack
+	mov x10, x30 // lr
+	get_mp_stack platform_normal_stacks, PLATFORM_STACK_SIZE
+	ret x10
+
+	/* -----------------------------------------------------
+	 * void platform_set_stack (unsigned long mpidr)
+	 *
+	 * For a given CPU, this function sets the stack pointer
+	 * to a stack allocated in normal memory.
+	 * -----------------------------------------------------
+	 */
+func platform_set_stack
+	mov x9, x30 // lr
+	bl  platform_get_stack
+	mov sp, x0
+	ret x9
+
+	/* -----------------------------------------------------
+	 * Per-cpu stacks in normal memory.
+	 * Used for C code during runtime execution (when coherent
+	 * stacks are not required).
+	 * Each cpu gets a stack of PLATFORM_STACK_SIZE bytes.
+	 * -----------------------------------------------------
+	 */
+declare_stack platform_normal_stacks, tzfw_normal_stacks, \
+		PLATFORM_STACK_SIZE, PLATFORM_CORE_COUNT
+
+	/* -----------------------------------------------------
+	 * Per-cpu stacks in device memory.
+	 * Used for C code just before power down or right after
+	 * power up when the MMU or caches need to be turned on
+	 * or off.
+	 * Each cpu gets a stack of PCPU_DV_MEM_STACK_SIZE bytes.
+	 * -----------------------------------------------------
+	 */
+declare_stack pcpu_dv_mem_stack, tzfw_coherent_mem, \
+		PCPU_DV_MEM_STACK_SIZE, PLATFORM_CORE_COUNT