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-rw-r--r--plat/arm/common/arm_console.c71
1 files changed, 71 insertions, 0 deletions
diff --git a/plat/arm/common/arm_console.c b/plat/arm/common/arm_console.c
new file mode 100644
index 0000000..51830c9
--- /dev/null
+++ b/plat/arm/common/arm_console.c
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2018-2022, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+
+#include <platform_def.h>
+
+#include <common/debug.h>
+#include <drivers/arm/pl011.h>
+#include <drivers/console.h>
+#include <plat/arm/common/plat_arm.h>
+
+#pragma weak arm_console_runtime_init
+#pragma weak arm_console_runtime_end
+
+/*******************************************************************************
+ * Functions that set up the console
+ ******************************************************************************/
+static console_t arm_boot_console;
+static console_t arm_runtime_console;
+
+/* Initialize the console to provide early debug support */
+void __init arm_console_boot_init(void)
+{
+ /* If the console was initialized already, don't initialize again */
+ if (arm_boot_console.base == PLAT_ARM_BOOT_UART_BASE) {
+ return;
+ }
+
+ int rc = console_pl011_register(PLAT_ARM_BOOT_UART_BASE,
+ PLAT_ARM_BOOT_UART_CLK_IN_HZ,
+ ARM_CONSOLE_BAUDRATE,
+ &arm_boot_console);
+ if (rc == 0) {
+ /*
+ * The crash console doesn't use the multi console API, it uses
+ * the core console functions directly. It is safe to call panic
+ * and let it print debug information.
+ */
+ panic();
+ }
+
+ console_set_scope(&arm_boot_console, CONSOLE_FLAG_BOOT);
+}
+
+void arm_console_boot_end(void)
+{
+ console_flush();
+ (void)console_unregister(&arm_boot_console);
+}
+
+/* Initialize the runtime console */
+void arm_console_runtime_init(void)
+{
+ int rc = console_pl011_register(PLAT_ARM_RUN_UART_BASE,
+ PLAT_ARM_RUN_UART_CLK_IN_HZ,
+ ARM_CONSOLE_BAUDRATE,
+ &arm_runtime_console);
+ if (rc == 0)
+ panic();
+
+ console_set_scope(&arm_runtime_console, CONSOLE_FLAG_RUNTIME);
+}
+
+void arm_console_runtime_end(void)
+{
+ console_flush();
+}