1 /* 2 * Copyright (c) 2018-2022, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <assert.h> 8 9 #include <platform_def.h> 10 11 #include <common/debug.h> 12 #include <drivers/arm/pl011.h> 13 #include <drivers/console.h> 14 #include <plat/arm/common/plat_arm.h> 15 16 #pragma weak arm_console_runtime_init 17 #pragma weak arm_console_runtime_end 18 19 /******************************************************************************* 20 * Functions that set up the console 21 ******************************************************************************/ 22 static console_t arm_boot_console; 23 static console_t arm_runtime_console; 24 25 /* Initialize the console to provide early debug support */ 26 void __init arm_console_boot_init(void) 27 { 28 /* If the console was initialized already, don't initialize again */ 29 if (arm_boot_console.base == PLAT_ARM_BOOT_UART_BASE) { 30 return; 31 } 32 33 int rc = console_pl011_register(PLAT_ARM_BOOT_UART_BASE, 34 PLAT_ARM_BOOT_UART_CLK_IN_HZ, 35 ARM_CONSOLE_BAUDRATE, 36 &arm_boot_console); 37 if (rc == 0) { 38 /* 39 * The crash console doesn't use the multi console API, it uses 40 * the core console functions directly. It is safe to call panic 41 * and let it print debug information. 42 */ 43 panic(); 44 } 45 46 console_set_scope(&arm_boot_console, CONSOLE_FLAG_BOOT); 47 } 48 49 void arm_console_boot_end(void) 50 { 51 console_flush(); 52 (void)console_unregister(&arm_boot_console); 53 } 54 55 /* Initialize the runtime console */ 56 void arm_console_runtime_init(void) 57 { 58 int rc = console_pl011_register(PLAT_ARM_RUN_UART_BASE, 59 PLAT_ARM_RUN_UART_CLK_IN_HZ, 60 ARM_CONSOLE_BAUDRATE, 61 &arm_runtime_console); 62 if (rc == 0) 63 panic(); 64 65 console_set_scope(&arm_runtime_console, CONSOLE_FLAG_RUNTIME); 66 } 67 68 void arm_console_runtime_end(void) 69 { 70 console_flush(); 71 } 72