xref: /rk3399_ARM-atf/plat/common/aarch32/platform_helpers.S (revision 877cf3ff12fc6b71ea44e2a4bad2b9303298433c)
1*877cf3ffSSoby Mathew/*
2*877cf3ffSSoby Mathew * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
3*877cf3ffSSoby Mathew *
4*877cf3ffSSoby Mathew * Redistribution and use in source and binary forms, with or without
5*877cf3ffSSoby Mathew * modification, are permitted provided that the following conditions are met:
6*877cf3ffSSoby Mathew *
7*877cf3ffSSoby Mathew * Redistributions of source code must retain the above copyright notice, this
8*877cf3ffSSoby Mathew * list of conditions and the following disclaimer.
9*877cf3ffSSoby Mathew *
10*877cf3ffSSoby Mathew * Redistributions in binary form must reproduce the above copyright notice,
11*877cf3ffSSoby Mathew * this list of conditions and the following disclaimer in the documentation
12*877cf3ffSSoby Mathew * and/or other materials provided with the distribution.
13*877cf3ffSSoby Mathew *
14*877cf3ffSSoby Mathew * Neither the name of ARM nor the names of its contributors may be used
15*877cf3ffSSoby Mathew * to endorse or promote products derived from this software without specific
16*877cf3ffSSoby Mathew * prior written permission.
17*877cf3ffSSoby Mathew *
18*877cf3ffSSoby Mathew * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19*877cf3ffSSoby Mathew * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20*877cf3ffSSoby Mathew * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21*877cf3ffSSoby Mathew * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
22*877cf3ffSSoby Mathew * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23*877cf3ffSSoby Mathew * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24*877cf3ffSSoby Mathew * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25*877cf3ffSSoby Mathew * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26*877cf3ffSSoby Mathew * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27*877cf3ffSSoby Mathew * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28*877cf3ffSSoby Mathew * POSSIBILITY OF SUCH DAMAGE.
29*877cf3ffSSoby Mathew */
30*877cf3ffSSoby Mathew
31*877cf3ffSSoby Mathew#include <arch.h>
32*877cf3ffSSoby Mathew#include <asm_macros.S>
33*877cf3ffSSoby Mathew
34*877cf3ffSSoby Mathew	.weak	plat_my_core_pos
35*877cf3ffSSoby Mathew	.weak	plat_reset_handler
36*877cf3ffSSoby Mathew	.weak	platform_mem_init
37*877cf3ffSSoby Mathew	.weak	plat_panic_handler
38*877cf3ffSSoby Mathew
39*877cf3ffSSoby Mathew	/* -----------------------------------------------------
40*877cf3ffSSoby Mathew	 *  int plat_my_core_pos(void);
41*877cf3ffSSoby Mathew	 *  With this function: CorePos	= (ClusterId * 4) +
42*877cf3ffSSoby Mathew	 *				  CoreId
43*877cf3ffSSoby Mathew	 * -----------------------------------------------------
44*877cf3ffSSoby Mathew	 */
45*877cf3ffSSoby Mathewfunc plat_my_core_pos
46*877cf3ffSSoby Mathew	ldcopr	r0, MPIDR
47*877cf3ffSSoby Mathew	and	r1, r0, #MPIDR_CPU_MASK
48*877cf3ffSSoby Mathew	and	r0, r0, #MPIDR_CLUSTER_MASK
49*877cf3ffSSoby Mathew	add	r0, r1, r0, LSR #6
50*877cf3ffSSoby Mathew	bx	lr
51*877cf3ffSSoby Mathewendfunc	plat_my_core_pos
52*877cf3ffSSoby Mathew
53*877cf3ffSSoby Mathew	/* -----------------------------------------------------
54*877cf3ffSSoby Mathew	 * Placeholder function which should be redefined by
55*877cf3ffSSoby Mathew	 * each platform.
56*877cf3ffSSoby Mathew	 * -----------------------------------------------------
57*877cf3ffSSoby Mathew	 */
58*877cf3ffSSoby Mathewfunc plat_reset_handler
59*877cf3ffSSoby Mathew	bx	lr
60*877cf3ffSSoby Mathewendfunc plat_reset_handler
61*877cf3ffSSoby Mathew
62*877cf3ffSSoby Mathew	/* ---------------------------------------------------------------------
63*877cf3ffSSoby Mathew	 * Placeholder function which should be redefined by
64*877cf3ffSSoby Mathew	 * each platform.
65*877cf3ffSSoby Mathew	 * ---------------------------------------------------------------------
66*877cf3ffSSoby Mathew	 */
67*877cf3ffSSoby Mathewfunc platform_mem_init
68*877cf3ffSSoby Mathew	bx	lr
69*877cf3ffSSoby Mathewendfunc platform_mem_init
70*877cf3ffSSoby Mathew
71*877cf3ffSSoby Mathew	/* -----------------------------------------------------
72*877cf3ffSSoby Mathew	 * void plat_panic_handler(void) __dead2;
73*877cf3ffSSoby Mathew	 * Endless loop by default.
74*877cf3ffSSoby Mathew	 * -----------------------------------------------------
75*877cf3ffSSoby Mathew	 */
76*877cf3ffSSoby Mathewfunc plat_panic_handler
77*877cf3ffSSoby Mathew	b	plat_panic_handler
78*877cf3ffSSoby Mathewendfunc plat_panic_handler
79