diff options
Diffstat (limited to 'plat/common/aarch32/platform_mp_stack.S')
| -rw-r--r-- | plat/common/aarch32/platform_mp_stack.S | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/plat/common/aarch32/platform_mp_stack.S b/plat/common/aarch32/platform_mp_stack.S new file mode 100644 index 0000000..314e87a --- /dev/null +++ b/plat/common/aarch32/platform_mp_stack.S @@ -0,0 +1,47 @@ +/* + * Copyright (c) 2016-2017, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <arch.h> +#include <asm_macros.S> +#include <platform_def.h> + + .weak plat_get_my_stack + .weak plat_set_my_stack + + /* ----------------------------------------------------- + * uintptr_t plat_get_my_stack (u_register_t mpidr) + * + * For a given CPU, this function returns the stack + * pointer for a stack allocated in device memory. + * ----------------------------------------------------- + */ +func plat_get_my_stack + push {r4, lr} + get_my_mp_stack platform_normal_stacks, PLATFORM_STACK_SIZE + pop {r4, pc} +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 r4, lr + get_my_mp_stack platform_normal_stacks, PLATFORM_STACK_SIZE + mov sp, r0 + bx r4 +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 |