aboutsummaryrefslogtreecommitdiff
path: root/plat/hisilicon/hikey960/aarch64/hikey960_helpers.S
blob: 606f2d0f9038cff477f56b684d28ab5f55ab39d6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
/*
 * Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

#include <arch.h>
#include <asm_macros.S>
#include <cortex_a53.h>
#include <cortex_a73.h>
#include "../hikey960_def.h"

	.globl	plat_my_core_pos
	.globl	platform_mem_init
	.globl	plat_crash_console_init
	.globl	plat_crash_console_putc
	.globl	plat_crash_console_flush
	.globl	plat_report_exception
	.globl	plat_reset_handler
	.globl	clr_ex
	.globl	nop

func plat_my_core_pos
	mrs	x0, mpidr_el1
	and	x1, x0, #MPIDR_CPU_MASK
	and	x0, x0, #MPIDR_CLUSTER_MASK
	add	x0, x1, x0, LSR #6
	ret
endfunc plat_my_core_pos

	/* -----------------------------------------------------
	 * void platform_mem_init(void);
	 *
	 * We don't need to carry out any memory initialization
	 * on HIKEY. The Secure RAM is accessible straight away.
	 * -----------------------------------------------------
	 */
func platform_mem_init
	ret
endfunc platform_mem_init

	/* ---------------------------------------------
	 * int plat_crash_console_init(void)
	 * Function to initialize the crash console
	 * without a C Runtime to print crash report.
	 * Clobber list : x0, x1, x2
	 * ---------------------------------------------
	 */
func plat_crash_console_init
	mov_imm	x0, CRASH_CONSOLE_BASE
	mov_imm	x1, PL011_UART_CLK_IN_HZ
	mov_imm	x2, PL011_BAUDRATE
	b	console_pl011_core_init
endfunc plat_crash_console_init

	/* ---------------------------------------------
	 * int plat_crash_console_putc(int c)
	 * Function to print a character on the crash
	 * console without a C Runtime.
	 * Clobber list : x1, x2
	 * ---------------------------------------------
	 */
func plat_crash_console_putc
	mov_imm	x1, CRASH_CONSOLE_BASE
	b	console_pl011_core_putc
endfunc plat_crash_console_putc

	/* ---------------------------------------------
	 * int plat_crash_console_flush()
	 * Function to force a write of all buffered
	 * data that hasn't been output.
	 * Out : return -1 on error else return 0.
	 * Clobber list : x0, x1
	 * ---------------------------------------------
	 */
func plat_crash_console_flush
	mov_imm	x0, CRASH_CONSOLE_BASE
	b	console_pl011_core_flush
endfunc plat_crash_console_flush

	/* ---------------------------------------------
	 * void plat_report_exception(unsigned int type)
	 * Function to report an unhandled exception
	 * with platform-specific means.
	 * On HIKEY platform, it updates the LEDs
	 * to indicate where we are
	 * ---------------------------------------------
	 */
func plat_report_exception
	mov	x8, x30

	/* Turn on LED according to x0 (0 -- f) */
	ldr	x2, =0xf7020000
	and	x1, x0, #1
	str	w1, [x2, #4]
	and	x1, x0, #2
	str	w1, [x2, #8]
	and	x1, x0, #4
	str	w1, [x2, #16]
	and	x1, x0, #8
	str	w1, [x2, #32]

	mrs	x2, currentel
	and	x2, x2, #0x0c
	/* Check EL1 */
	cmp	x2, #0x04
	beq	plat_report_el1

	adr	x4, plat_err_str
	bl	asm_print_str

	adr	x4, esr_el3_str
	bl	asm_print_str

	mrs	x4, esr_el3
	bl	asm_print_hex

	adr	x4, elr_el3_str
	bl	asm_print_str

	mrs	x4, elr_el3
	bl	asm_print_hex
	b	plat_report_end

plat_report_el1:
	adr	x4, plat_err_str
	bl	asm_print_str

	adr	x4, esr_el1_str
	bl	asm_print_str

	mrs	x4, esr_el1
	bl	asm_print_hex

	adr	x4, elr_el1_str
	bl	asm_print_str

	mrs	x4, elr_el1
	bl	asm_print_hex
plat_report_end:
	mov	x30, x8
	ret
endfunc plat_report_exception

	/* -----------------------------------------------------
	 * void plat_reset_handler(void);
	 * -----------------------------------------------------
	 */
func plat_reset_handler
	ret
endfunc plat_reset_handler

	/* -----------------------------------------------------
	 * void clrex(void);
	 * -----------------------------------------------------
	 */
func clr_ex
	clrex
	ret
endfunc clr_ex

	/* -----------------------------------------------------
	 * void nop(void);
	 * -----------------------------------------------------
	 */
func nop
	nop
	ret
endfunc nop

.section .rodata.rev_err_str, "aS"
plat_err_str:
	.asciz "\nPlatform exception reporting:"
esr_el3_str:
	.asciz "\nESR_EL3: "
elr_el3_str:
	.asciz "\nELR_EL3: "
esr_el1_str:
	.asciz "\nESR_EL1: "
elr_el1_str:
	.asciz "\nELR_EL1: "