| Antonio Nino Diaz | 6766bb1 | 2018-10-26 11:12:31 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | #include <asm_macros.S> |
| 7 | #include <platform_def.h> |
| 8 | |
| 9 | .globl plat_my_core_pos |
| 10 | .globl poplar_calc_core_pos |
| 11 | .globl plat_crash_console_init |
| 12 | .globl plat_crash_console_putc |
| 13 | .globl plat_crash_console_flush |
| 14 | .globl platform_mem_init |
| 15 | |
| 16 | /* ----------------------------------------------------- |
| 17 | * unsigned int plat_my_core_pos(void) |
| 18 | * This function uses poplar_calc_core_pos() |
| 19 | * definition to get the index of the calling CPU. |
| 20 | * ----------------------------------------------------- |
| 21 | */ |
| 22 | func plat_my_core_pos |
| 23 | mrs x0, mpidr_el1 |
| 24 | b poplar_calc_core_pos |
| 25 | endfunc plat_my_core_pos |
| 26 | |
| 27 | /* ----------------------------------------------------- |
| 28 | * unsigned int poplar_calc_core_pos(u_register_t mpidr) |
| 29 | * Helper function to calculate the core position. |
| 30 | * With this function: CorePos = (ClusterId * 4) + |
| 31 | * CoreId |
| 32 | * ----------------------------------------------------- |
| 33 | */ |
| 34 | func poplar_calc_core_pos |
| 35 | and x1, x0, #MPIDR_CPU_MASK |
| 36 | and x0, x0, #MPIDR_CLUSTER_MASK |
| 37 | add x0, x1, x0, LSR #6 |
| 38 | ret |
| 39 | endfunc poplar_calc_core_pos |
| 40 | |
| 41 | /* --------------------------------------------- |
| 42 | * int plat_crash_console_init(void) |
| 43 | * Function to initialize the crash console |
| 44 | * without a C Runtime to print crash report. |
| 45 | * Clobber list : x0 - x4 |
| 46 | * --------------------------------------------- |
| 47 | */ |
| 48 | func plat_crash_console_init |
| 49 | mov_imm x0, POPLAR_CRASH_UART_BASE |
| 50 | mov_imm x1, POPLAR_CRASH_UART_CLK_IN_HZ |
| 51 | mov_imm x2, POPLAR_CONSOLE_BAUDRATE |
| 52 | b console_pl011_core_init |
| 53 | endfunc plat_crash_console_init |
| 54 | |
| 55 | /* --------------------------------------------- |
| 56 | * int plat_crash_console_putc(int c) |
| 57 | * Function to print a character on the crash |
| 58 | * console without a C Runtime. |
| 59 | * Clobber list : x1, x2 |
| 60 | * --------------------------------------------- |
| 61 | */ |
| 62 | func plat_crash_console_putc |
| 63 | mov_imm x1, POPLAR_CRASH_UART_BASE |
| 64 | b console_pl011_core_putc |
| 65 | endfunc plat_crash_console_putc |
| 66 | |
| 67 | /* --------------------------------------------- |
| 68 | * int plat_crash_console_flush() |
| 69 | * Function to force a write of all buffered |
| 70 | * data that hasn't been output. |
| 71 | * Out : return -1 on error else return 0. |
| 72 | * Clobber list : r0 |
| 73 | * --------------------------------------------- |
| 74 | */ |
| 75 | func plat_crash_console_flush |
| 76 | mov_imm x0, POPLAR_CRASH_UART_BASE |
| 77 | b console_pl011_core_flush |
| 78 | endfunc plat_crash_console_flush |
| 79 | |
| 80 | /* --------------------------------------------------------------------- |
| 81 | * We don't need to carry out any memory initialization on ARM |
| 82 | * platforms. The Secure RAM is accessible straight away. |
| 83 | * --------------------------------------------------------------------- |
| 84 | */ |
| 85 | func platform_mem_init |
| 86 | ret |
| 87 | endfunc platform_mem_init |