diff options
Diffstat (limited to 'plat/common/aarch32/platform_up_stack.S')
| -rw-r--r-- | plat/common/aarch32/platform_up_stack.S | 74 |
1 files changed, 74 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..6165360 --- /dev/null +++ b/plat/common/aarch32/platform_up_stack.S @@ -0,0 +1,74 @@ +/* + * Copyright (c) 2016, 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 platform_normal_stacks + .globl platform_set_stack + .globl platform_get_stack + + /* ----------------------------------------------------- + * unsigned long platform_get_stack (unsigned long) + * + * For cold-boot BL images, only the primary CPU needs a + * stack. This function returns the stack pointer for a + * stack allocated in device memory. + * ----------------------------------------------------- + */ +func platform_get_stack + get_up_stack platform_normal_stacks, PLATFORM_STACK_SIZE + bx lr +endfunc platform_get_stack + + /* ----------------------------------------------------- + * void platform_set_stack (unsigned long) + * + * 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 platform_set_stack + get_up_stack platform_normal_stacks, PLATFORM_STACK_SIZE + mov sp, r0 + bx lr +endfunc platform_set_stack + + /* ----------------------------------------------------- + * Single cpu stack in normal memory. + * Used for C code during boot, PLATFORM_STACK_SIZE bytes + * are allocated + * ----------------------------------------------------- + */ +declare_stack platform_normal_stacks, ns_bl_normal_stacks, \ + PLATFORM_STACK_SIZE, 1 |