1/* 2 * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7#include <arch.h> 8#include <asm_macros.S> 9#include "../hikey_def.h" 10 11 .globl plat_my_core_pos 12 .globl platform_mem_init 13 .globl plat_crash_console_init 14 .globl plat_crash_console_putc 15 .globl plat_report_exception 16 .globl plat_reset_handler 17 18func plat_my_core_pos 19 mrs x0, mpidr_el1 20 and x1, x0, #MPIDR_CPU_MASK 21 and x0, x0, #MPIDR_CLUSTER_MASK 22 add x0, x1, x0, LSR #6 23 ret 24endfunc plat_my_core_pos 25 26 /* ----------------------------------------------------- 27 * void platform_mem_init(void); 28 * 29 * We don't need to carry out any memory initialization 30 * on HIKEY. The Secure RAM is accessible straight away. 31 * ----------------------------------------------------- 32 */ 33func platform_mem_init 34 ret 35endfunc platform_mem_init 36 37 /* --------------------------------------------- 38 * int plat_crash_console_init(void) 39 * Function to initialize the crash console 40 * without a C Runtime to print crash report. 41 * Clobber list : x0, x1, x2 42 * --------------------------------------------- 43 */ 44func plat_crash_console_init 45 mov_imm x0, CRASH_CONSOLE_BASE 46 mov_imm x1, PL011_UART_CLK_IN_HZ 47 mov_imm x2, PL011_BAUDRATE 48 b console_core_init 49endfunc plat_crash_console_init 50 51 /* --------------------------------------------- 52 * int plat_crash_console_putc(int c) 53 * Function to print a character on the crash 54 * console without a C Runtime. 55 * Clobber list : x1, x2 56 * --------------------------------------------- 57 */ 58func plat_crash_console_putc 59 mov_imm x1, CRASH_CONSOLE_BASE 60 b console_core_putc 61endfunc plat_crash_console_putc 62 63 /* --------------------------------------------- 64 * void plat_report_exception(unsigned int type) 65 * Function to report an unhandled exception 66 * with platform-specific means. 67 * On HIKEY platform, it updates the LEDs 68 * to indicate where we are 69 * --------------------------------------------- 70 */ 71func plat_report_exception 72 mov x8, x30 73 74 /* Turn on LED according to x0 (0 -- f) */ 75 ldr x2, =0xf7020000 76 and x1, x0, #1 77 str w1, [x2, #4] 78 and x1, x0, #2 79 str w1, [x2, #8] 80 and x1, x0, #4 81 str w1, [x2, #16] 82 and x1, x0, #8 83 str w1, [x2, #32] 84 85 mrs x2, currentel 86 and x2, x2, #0xc0 87 /* Check EL1 */ 88 cmp x2, #0x04 89 beq plat_report_el1 90 91 adr x4, plat_err_str 92 bl asm_print_str 93 94 adr x4, esr_el3_str 95 bl asm_print_str 96 97 mrs x4, esr_el3 98 bl asm_print_hex 99 100 adr x4, elr_el3_str 101 bl asm_print_str 102 103 mrs x4, elr_el3 104 bl asm_print_hex 105 b plat_report_end 106 107plat_report_el1: 108 adr x4, plat_err_str 109 bl asm_print_str 110 111 adr x4, esr_el1_str 112 bl asm_print_str 113 114 mrs x4, esr_el1 115 bl asm_print_hex 116 117 adr x4, elr_el1_str 118 bl asm_print_str 119 120 mrs x4, elr_el1 121 bl asm_print_hex 122plat_report_end: 123 mov x30, x8 124 ret 125endfunc plat_report_exception 126 127 /* ----------------------------------------------------- 128 * void plat_reset_handler(void); 129 * ----------------------------------------------------- 130 */ 131func plat_reset_handler 132 ret 133endfunc plat_reset_handler 134 135.section .rodata.rev_err_str, "aS" 136plat_err_str: 137 .asciz "\nPlatform exception reporting:" 138esr_el3_str: 139 .asciz "\nESR_EL3: " 140elr_el3_str: 141 .asciz "\nELR_EL3: " 142esr_el1_str: 143 .asciz "\nESR_EL1: " 144elr_el1_str: 145 .asciz "\nELR_EL1: " 146