blob: 45a96a6469d50a6def866ea9e05a57d2896b9d03 [file] [log] [blame]
Andrew Thoelke65668f92014-03-20 10:48:23 +00001/*
2 * Copyright (c) 2014, ARM Limited and Contributors. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * Redistributions of source code must retain the above copyright notice, this
8 * list of conditions and the following disclaimer.
9 *
10 * Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation
12 * and/or other materials provided with the distribution.
13 *
14 * Neither the name of ARM nor the names of its contributors may be used
15 * to endorse or promote products derived from this software without specific
16 * prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include <arch.h>
Andrew Thoelke65668f92014-03-20 10:48:23 +000032#include <asm_macros.S>
Dan Handleyed6ff952014-05-14 17:44:19 +010033#include <platform_def.h>
Andrew Thoelke65668f92014-03-20 10:48:23 +000034
35
36 .local pcpu_dv_mem_stack
37 .local platform_normal_stacks
38 .globl platform_set_stack
39 .globl platform_get_stack
40 .globl platform_set_coherent_stack
41
42
43 /* -----------------------------------------------------
44 * void platform_set_coherent_stack (unsigned long)
45 *
46 * For cold-boot BL images, only the primary CPU needs a
47 * stack. This function sets the stack pointer to a stack
48 * allocated in device memory.
49 * -----------------------------------------------------
50 */
51func platform_set_coherent_stack
52 get_up_stack pcpu_dv_mem_stack, PCPU_DV_MEM_STACK_SIZE
53 mov sp, x0
54 ret
55
56
57 /* -----------------------------------------------------
58 * unsigned long platform_get_stack (unsigned long)
59 *
60 * For cold-boot BL images, only the primary CPU needs a
61 * stack. This function returns the stack pointer for a
62 * stack allocated in device memory.
63 * -----------------------------------------------------
64 */
65func platform_get_stack
66 get_up_stack platform_normal_stacks, PLATFORM_STACK_SIZE
67 ret
68
69 /* -----------------------------------------------------
70 * void platform_set_stack (unsigned long)
71 *
72 * For cold-boot BL images, only the primary CPU needs a
73 * stack. This function sets the stack pointer to a stack
74 * allocated in normal memory.
75 * -----------------------------------------------------
76 */
77func platform_set_stack
78 get_up_stack platform_normal_stacks, PLATFORM_STACK_SIZE
79 mov sp, x0
80 ret
81
82 /* -----------------------------------------------------
83 * Single cpu stack in normal memory.
84 * Used for C code during boot, PLATFORM_STACK_SIZE bytes
85 * are allocated
86 * -----------------------------------------------------
87 */
88declare_stack platform_normal_stacks, tzfw_normal_stacks, \
89 PLATFORM_STACK_SIZE, 1
90
91 /* -----------------------------------------------------
92 * Single cpu stack in device/coherent memory.
93 * PCPU_DV_MEM_STACK_SIZE bytes are allocated.
94 * -----------------------------------------------------
95 */
96declare_stack pcpu_dv_mem_stack, tzfw_coherent_mem, \
97 PCPU_DV_MEM_STACK_SIZE, 1