| Etienne Carriere | 911de8c | 2018-02-02 13:23:22 +0100 | [diff] [blame] | 1 | /* |
| Ambroise Vincent | 962109f | 2019-03-27 13:48:15 +0000 | [diff] [blame] | 2 | * Copyright (c) 2015-2019, ARM Limited and Contributors. All rights reserved. |
| Etienne Carriere | 911de8c | 2018-02-02 13:23:22 +0100 | [diff] [blame] | 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | #include <arch.h> |
| 8 | #include <asm_macros.S> |
| 9 | #include <assert_macros.S> |
| 10 | #include <platform_def.h> |
| 11 | |
| 12 | .globl plat_my_core_pos |
| 13 | .globl plat_get_my_entrypoint |
| 14 | .globl platform_mem_init |
| 15 | .globl plat_qemu_calc_core_pos |
| 16 | .globl plat_crash_console_init |
| 17 | .globl plat_crash_console_putc |
| Ambroise Vincent | 962109f | 2019-03-27 13:48:15 +0000 | [diff] [blame] | 18 | .globl plat_crash_console_flush |
| Etienne Carriere | 911de8c | 2018-02-02 13:23:22 +0100 | [diff] [blame] | 19 | .globl plat_secondary_cold_boot_setup |
| 20 | .globl plat_get_my_entrypoint |
| 21 | .globl plat_is_my_cpu_primary |
| 22 | |
| 23 | |
| 24 | func plat_my_core_pos |
| 25 | ldcopr r0, MPIDR |
| 26 | b plat_qemu_calc_core_pos |
| 27 | endfunc plat_my_core_pos |
| 28 | |
| 29 | /* |
| 30 | * unsigned int plat_qemu_calc_core_pos(u_register_t mpidr); |
| 31 | * With this function: CorePos = (ClusterId * 4) + CoreId |
| 32 | */ |
| 33 | func plat_qemu_calc_core_pos |
| 34 | and r1, r0, #MPIDR_CPU_MASK |
| 35 | and r0, r0, #MPIDR_CLUSTER_MASK |
| 36 | add r0, r1, r0, LSR #6 |
| 37 | bx lr |
| 38 | endfunc plat_qemu_calc_core_pos |
| 39 | |
| 40 | /* ----------------------------------------------------- |
| 41 | * unsigned int plat_is_my_cpu_primary (void); |
| 42 | * |
| 43 | * Find out whether the current cpu is the primary |
| 44 | * cpu. |
| 45 | * ----------------------------------------------------- |
| 46 | */ |
| 47 | func plat_is_my_cpu_primary |
| 48 | ldcopr r0, MPIDR |
| 49 | ldr r1, =(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK) |
| 50 | and r0, r1 |
| 51 | cmp r0, #QEMU_PRIMARY_CPU |
| 52 | moveq r0, #1 |
| 53 | movne r0, #0 |
| 54 | bx lr |
| 55 | endfunc plat_is_my_cpu_primary |
| 56 | |
| 57 | /* ----------------------------------------------------- |
| 58 | * void plat_secondary_cold_boot_setup (void); |
| 59 | * |
| 60 | * This function performs any platform specific actions |
| 61 | * needed for a secondary cpu after a cold reset e.g |
| 62 | * mark the cpu's presence, mechanism to place it in a |
| 63 | * holding pen etc. |
| 64 | * ----------------------------------------------------- |
| 65 | */ |
| 66 | func plat_secondary_cold_boot_setup |
| 67 | /* Calculate address of our hold entry */ |
| 68 | bl plat_my_core_pos |
| 69 | lsl r0, r0, #PLAT_QEMU_HOLD_ENTRY_SHIFT |
| 70 | mov_imm r2, PLAT_QEMU_HOLD_BASE |
| 71 | |
| 72 | /* Wait until we have a go */ |
| 73 | poll_mailbox: |
| 74 | ldr r1, [r2, r0] |
| 75 | cmp r1, #0 |
| 76 | beq 1f |
| 77 | mov_imm r0, PLAT_QEMU_TRUSTED_MAILBOX_BASE |
| 78 | ldr r1, [r0] |
| 79 | bx r1 |
| 80 | 1: |
| 81 | wfe |
| 82 | b poll_mailbox |
| 83 | endfunc plat_secondary_cold_boot_setup |
| 84 | |
| 85 | func plat_get_my_entrypoint |
| 86 | /* TODO support warm boot */ |
| 87 | mov r0, #0 |
| 88 | bx lr |
| 89 | endfunc plat_get_my_entrypoint |
| 90 | |
| 91 | func platform_mem_init |
| 92 | bx lr |
| 93 | endfunc platform_mem_init |
| 94 | |
| 95 | /* --------------------------------------------- |
| 96 | * int plat_crash_console_init(void) |
| 97 | * Function to initialize the crash console |
| 98 | * without a C Runtime to print crash report. |
| 99 | * Clobber list : x0, x1, x2 |
| 100 | * --------------------------------------------- |
| 101 | */ |
| 102 | func plat_crash_console_init |
| 103 | mov_imm r0, PLAT_QEMU_CRASH_UART_BASE |
| 104 | mov_imm r1, PLAT_QEMU_CRASH_UART_CLK_IN_HZ |
| 105 | mov_imm r2, PLAT_QEMU_CONSOLE_BAUDRATE |
| 106 | b console_core_init |
| 107 | endfunc plat_crash_console_init |
| 108 | |
| 109 | /* --------------------------------------------- |
| 110 | * int plat_crash_console_putc(int c) |
| 111 | * Function to print a character on the crash |
| 112 | * console without a C Runtime. |
| 113 | * Clobber list : x1, x2 |
| 114 | * --------------------------------------------- |
| 115 | */ |
| 116 | func plat_crash_console_putc |
| 117 | mov_imm r1, PLAT_QEMU_CRASH_UART_BASE |
| 118 | b console_core_putc |
| 119 | endfunc plat_crash_console_putc |
| 120 | |
| Ambroise Vincent | 962109f | 2019-03-27 13:48:15 +0000 | [diff] [blame] | 121 | /* --------------------------------------------- |
| 122 | * int plat_crash_console_flush(int c) |
| 123 | * Function to force a write of all buffered |
| 124 | * data that hasn't been output. |
| 125 | * Out : return -1 on error else return 0. |
| 126 | * Clobber list : x0, x1 |
| 127 | * --------------------------------------------- |
| 128 | */ |
| 129 | func plat_crash_console_flush |
| 130 | mov_imm r0, PLAT_QEMU_CRASH_UART_BASE |
| 131 | b console_core_flush |
| 132 | endfunc plat_crash_console_flush |
| 133 | |