| /* |
| * Copyright (c) 2014-2019, 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 compatility layer is disabled, the new platform APIs |
| * viz 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 // lr |
| 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 // lr |
| 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 |