diff options
Diffstat (limited to 'plat/common/aarch32/platform_up_stack.S')
| -rw-r--r-- | plat/common/aarch32/platform_up_stack.S | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/plat/common/aarch32/platform_up_stack.S b/plat/common/aarch32/platform_up_stack.S new file mode 100644 index 0000000..836c13a --- /dev/null +++ b/plat/common/aarch32/platform_up_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 + + /* ----------------------------------------------------- + * unsigned long plat_get_my_stack () + * + * For cold-boot BL images, only the primary CPU needs + * a stack. This function returns the stack pointer for + * a stack allocated in normal memory. + * ----------------------------------------------------- + */ +func plat_get_my_stack + get_up_stack platform_normal_stacks, PLATFORM_STACK_SIZE + bx lr +endfunc plat_get_my_stack + + /* ----------------------------------------------------- + * void plat_set_my_stack () + * + * For cold-boot BL images, only the primary CPU needs + * a stack. This function sets the stack pointer to a + * stack allocated in normal memory. + * ----------------------------------------------------- + */ +func plat_set_my_stack + get_up_stack platform_normal_stacks, PLATFORM_STACK_SIZE + mov sp, r0 + bx lr +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, 1, CACHE_WRITEBACK_GRANULE |