1/*
2 * Copyright (c) 2018, Arm Limited and Contributors. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7
8#include <arch.h>
9#include <asm_macros.S>
10#include <drivers/arm/gicv3.h>
11
12#include <platform_def.h>
13
14	.globl	plat_secondary_cold_boot_setup
15	.globl	plat_is_my_cpu_primary
16	.globl	versal_calc_core_pos
17	.globl	platform_mem_init
18	.globl	plat_my_core_pos
19
20	/* -----------------------------------------------------
21	 * void plat_secondary_cold_boot_setup (void);
22	 *
23	 * This function performs any platform specific actions
24	 * needed for a secondary cpu after a cold reset e.g
25	 * mark the cpu's presence, mechanism to place it in a
26	 * holding pen etc.
27	 * TODO: Should we read the PSYS register to make sure
28	 * that the request has gone through.
29	 * -----------------------------------------------------
30	 */
31func plat_secondary_cold_boot_setup
32	mrs	x0, mpidr_el1
33
34	/*
35	 * There is no sane reason to come out of this wfi. This
36	 * cpu will be powered on and reset by the cpu_on pm api
37	 */
38	dsb	sy
39	bl	plat_panic_handler
40endfunc plat_secondary_cold_boot_setup
41
42func plat_is_my_cpu_primary
43	mov	x9, x30
44	bl	plat_my_core_pos
45	cmp	x0, #VERSAL_PRIMARY_CPU
46	cset	x0, eq
47	ret	x9
48endfunc plat_is_my_cpu_primary
49
50	/* -----------------------------------------------------
51	 *  unsigned int plat_my_core_pos(void)
52	 *  This function uses the versal_calc_core_pos()
53	 *  definition to get the index of the calling CPU.
54	 * -----------------------------------------------------
55	 */
56func plat_my_core_pos
57	mrs	x0, mpidr_el1
58	b	versal_calc_core_pos
59endfunc plat_my_core_pos
60
61func versal_calc_core_pos
62	and	x1, x0, #MPIDR_CPU_MASK
63	and	x0, x0, #MPIDR_CLUSTER_MASK
64	add	x0, x1, x0, LSR #6
65	ret
66endfunc versal_calc_core_pos
67
68	/* ---------------------------------------------------------------------
69	 * We don't need to carry out any memory initialization on VERSAL
70	 * platform. The Secure RAM is accessible straight away.
71	 * ---------------------------------------------------------------------
72	 */
73func platform_mem_init
74	ret
75endfunc platform_mem_init
76