plat/arm/common/arm_console.c

   1 /*
   2  * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
   3  *
   4  * SPDX-License-Identifier: BSD-3-Clause
   5  */
   6 #include <assert.h>
   7 #include <console.h>
   8 #include <debug.h>
   9 #include <pl011.h>
  10 #include <plat_arm.h>
  11 #include <platform_def.h>
  12
  13 /*******************************************************************************
  14  * Functions that set up the console
  15  ******************************************************************************/
  16 #if MULTI_CONSOLE_API
  17 static console_pl011_t arm_boot_console;
  18 static console_pl011_t arm_runtime_console;
  19 #endif
  20
  21 /* Initialize the console to provide early debug support */
  22 void __init arm_console_boot_init(void)
  23 {
  24 #if MULTI_CONSOLE_API
  25         int rc = console_pl011_register(PLAT_ARM_BOOT_UART_BASE,
  26                                         PLAT_ARM_BOOT_UART_CLK_IN_HZ,
  27                                         ARM_CONSOLE_BAUDRATE,
  28                                         &arm_boot_console);
  29         if (rc == 0) {
  30                 /*
  31                  * The crash console doesn't use the multi console API, it uses
  32                  * the core console functions directly. It is safe to call panic
  33                  * and let it print debug information.
  34                  */
  35                 panic();
  36         }
  37
  38         console_set_scope(&arm_boot_console.console, CONSOLE_FLAG_BOOT);
  39 #else
  40         (void)console_init(PLAT_ARM_BOOT_UART_BASE,
  41                            PLAT_ARM_BOOT_UART_CLK_IN_HZ,
  42                            ARM_CONSOLE_BAUDRATE);
  43 #endif /* MULTI_CONSOLE_API */
  44 }
  45
  46 void arm_console_boot_end(void)
  47 {
  48         (void)console_flush();
  49
  50 #if MULTI_CONSOLE_API
  51         (void)console_unregister(&arm_boot_console.console);
  52 #else
  53         console_uninit();
  54 #endif /* MULTI_CONSOLE_API */
  55 }
  56
  57 /* Initialize the runtime console */
  58 void arm_console_runtime_init(void)
  59 {
  60 #if MULTI_CONSOLE_API
  61         int rc = console_pl011_register(PLAT_ARM_BL31_RUN_UART_BASE,
  62                                         PLAT_ARM_BL31_RUN_UART_CLK_IN_HZ,
  63                                         ARM_CONSOLE_BAUDRATE,
  64                                         &arm_runtime_console);
  65         if (rc == 0)
  66                 panic();
  67
  68         console_set_scope(&arm_runtime_console.console, CONSOLE_FLAG_RUNTIME);
  69 #else
  70         (void)console_init(PLAT_ARM_BL31_RUN_UART_BASE,
  71                            PLAT_ARM_BL31_RUN_UART_CLK_IN_HZ,
  72                            ARM_CONSOLE_BAUDRATE);
  73 #endif /* MULTI_CONSOLE_API */
  74 }
  75
  76 void arm_console_runtime_end(void)
  77 {
  78         (void)console_flush();
  79
  80 #if MULTI_CONSOLE_API
  81         (void)console_unregister(&arm_runtime_console.console);
  82 #else
  83         console_uninit();
  84 #endif /* MULTI_CONSOLE_API */
  85 }