ti: k3: common: Add console initialization base

Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Benjamin Fair <b-fair@ti.com>
Signed-off-by: Andrew F. Davis <afd@ti.com>

plat/ti/k3/common/k3_bl31_setup.c

@@ -9,6 +9,7 @@
 #include <assert.h>
 #include <bl_common.h>
 #include <debug.h>
+#include <k3_console.h>
 #include <plat_arm.h>
 #include <platform_def.h>
 #include <string.h>
@@ -16,6 +17,7 @@
 /* Table of regions to map using the MMU */
 const mmap_region_t plat_arm_mmap[] = {
 	MAP_REGION_FLAT(SHARED_RAM_BASE, SHARED_RAM_SIZE, MT_DEVICE | MT_RW | MT_SECURE),
+	MAP_REGION_FLAT(K3_USART_BASE_ADDRESS, K3_USART_SIZE, MT_DEVICE | MT_RW | MT_SECURE),
 	{ /* sentinel */ }
 };
 
@@ -55,6 +57,8 @@ void bl31_early_platform_setup(bl31_params_t *from_bl2,
 	assert(from_bl2 == NULL);
 	assert(plat_params_from_bl2 == NULL);
 
+	bl31_console_setup();
+
 #ifdef BL32_BASE
 	/* Populate entry point information for BL32 */
 	SET_PARAM_HEAD(&bl32_image_ep_info, PARAM_EP, VERSION_1, 0);

plat/ti/k3/common/k3_console.c

+/*
+ * Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <console.h>
+#include <k3_console.h>
+#include <platform_def.h>
+#include <uart_16550.h>
+
+void bl31_console_setup(void)
+{
+	static console_16550_t console;
+
+	/* Initialize the console to provide early debug support */
+	console_16550_register(K3_USART_BASE_ADDRESS, K3_USART_CLK_SPEED,
+			       K3_USART_BAUD, &console);
+}

plat/ti/k3/common/k3_helpers.S

@@ -92,3 +92,31 @@ func plat_my_core_pos
 out:
 	ret
 endfunc plat_my_core_pos
+
+	/* ---------------------------------------------
+	 * int plat_crash_console_init(void)
+	 * Function to initialize the crash console
+	 * without a C Runtime to print crash report.
+	 * Clobber list : x0 - x4
+	 * ---------------------------------------------
+	 */
+func plat_crash_console_init
+	mov_imm	x0, CRASH_CONSOLE_BASE
+	mov_imm	x1, CRASH_CONSOLE_CLK
+	mov_imm	x2, CRASH_CONSOLE_BAUD_RATE
+	mov w3, #0x0
+	b	console_core_init
+
+endfunc plat_crash_console_init
+
+	/* ---------------------------------------------
+	 * int plat_crash_console_putc(void)
+	 * Function to print a character on the crash
+	 * console without a C Runtime.
+	 * Clobber list : x1, x2
+	 * ---------------------------------------------
+	 */
+func plat_crash_console_putc
+	mov_imm	x1, CRASH_CONSOLE_BASE
+	b	console_core_putc
+endfunc plat_crash_console_putc

plat/ti/k3/common/plat_common.mk

@@ -25,6 +25,10 @@ ERRATA_A53_836870	:=	1
 ERRATA_A53_843419	:=	1
 ERRATA_A53_855873	:=	1
 
+MULTI_CONSOLE_API	:=	1
+TI_16550_MDR_QUIRK	:=	1
+$(eval $(call add_define,TI_16550_MDR_QUIRK))
+
 # Libraries
 include lib/xlat_tables_v2/xlat_tables.mk
 
@@ -33,10 +37,16 @@ PLAT_INCLUDES		+=	\
 				-Iinclude/plat/arm/common/		\
 				-Iinclude/plat/arm/common/aarch64/	\
 
+K3_CONSOLE_SOURCES	+=	\
+				drivers/console/aarch64/console.S	\
+				drivers/ti/uart/aarch64/16550_console.S	\
+				${PLAT_PATH}/common/k3_console.c	\
+
 PLAT_BL_COMMON_SOURCES	+=	\
 				plat/arm/common/arm_common.c		\
 				lib/cpus/aarch64/cortex_a53.S		\
 				${XLAT_TABLES_LIB_SRCS}			\
+				${K3_CONSOLE_SOURCES}			\
 
 BL31_SOURCES		+=	\
 				${PLAT_PATH}/common/k3_bl31_setup.c	\

plat/ti/k3/include/k3_console.h

+/*
+ * Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef __K3_CONSOLE_H__
+#define __K3_CONSOLE_H__
+
+void bl31_console_setup(void);
+
+#endif /* __K3_CONSOLE_H__ */

plat/ti/k3/include/platform_def.h

@@ -122,4 +122,25 @@
 #define CACHE_WRITEBACK_SHIFT		6
 #define CACHE_WRITEBACK_GRANULE		(1 << CACHE_WRITEBACK_SHIFT)
 
+/* Platform default console definitions */
+#ifndef K3_USART_BASE_ADDRESS
+#define K3_USART_BASE_ADDRESS 0x02800000
+#endif
+
+/* USART has a default size for address space */
+#define K3_USART_SIZE 0x1000
+
+#ifndef K3_USART_CLK_SPEED
+#define K3_USART_CLK_SPEED 48000000
+#endif
+
+#ifndef K3_USART_BAUD
+#define K3_USART_BAUD 115200
+#endif
+
+/* Crash console defaults */
+#define CRASH_CONSOLE_BASE K3_USART_BASE_ADDRESS
+#define CRASH_CONSOLE_CLK K3_USART_CLK_SPEED
+#define CRASH_CONSOLE_BAUD_RATE K3_USART_BAUD
+
 #endif /* __PLATFORM_DEF_H__ */