From 2992dd833d11cd988125b11ae72bc18e53b0b2ab Mon Sep 17 00:00:00 2001
From: Wenyou Yang <wenyou.yang@atmel.com>
Date: Mon, 17 Oct 2016 09:55:26 +0800
Subject: [PATCH] board: sama5d2_xplained: Enable an early debug UART
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Enable an early debug UART to debug problems when an ICE or other
debug mechanism is not available.
Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andreas BieÃmann <andreas.devel@googlemail.com>
---
board/atmel/sama5d2_xplained/sama5d2_xplained.c | 14 ++++++++++++++
configs/sama5d2_xplained_mmc_defconfig | 6 ++++++
configs/sama5d2_xplained_spiflash_defconfig | 6 ++++++
include/configs/sama5d2_xplained.h | 2 ++
4 files changed, 28 insertions(+)
diff --git a/board/atmel/sama5d2_xplained/sama5d2_xplained.c b/board/atmel/sama5d2_xplained/sama5d2_xplained.c
index cceccd2ac4..c5337af4de 100644
--- a/board/atmel/sama5d2_xplained/sama5d2_xplained.c
+++ b/board/atmel/sama5d2_xplained/sama5d2_xplained.c
@@ -7,6 +7,7 @@
#include <common.h>
#include <atmel_hlcdc.h>
+#include <debug_uart.h>
#include <dm.h>
#include <i2c.h>
#include <lcd.h>
@@ -141,12 +142,25 @@ static void board_uart1_hw_init(void)
at91_periph_clk_enable(ATMEL_ID_UART1);
}
+#ifdef CONFIG_DEBUG_UART_BOARD_INIT
+void board_debug_uart_init(void)
+{
+ board_uart1_hw_init();
+}
+#endif
+
+#ifdef CONFIG_BOARD_EARLY_INIT_F
int board_early_init_f(void)
{
+#ifdef CONFIG_DEBUG_UART
+ debug_uart_init();
+#else
board_uart1_hw_init();
+#endif
return 0;
}
+#endif
int board_init(void)
{
diff --git a/configs/sama5d2_xplained_mmc_defconfig b/configs/sama5d2_xplained_mmc_defconfig
index 08ecea6401..8a786f1a06 100644
--- a/configs/sama5d2_xplained_mmc_defconfig
+++ b/configs/sama5d2_xplained_mmc_defconfig
@@ -52,6 +52,12 @@ CONFIG_SPI_FLASH=y
CONFIG_SPI_FLASH_ATMEL=y
CONFIG_PINCTRL=y
CONFIG_PINCTRL_AT91PIO4=y
+CONFIG_DEBUG_UART=y
+CONFIG_DEBUG_UART_ATMEL=y
+CONFIG_DEBUG_UART_BASE=0xf8020000
+CONFIG_DEBUG_UART_CLOCK=0
+CONFIG_DEBUG_UART_BOARD_INIT=y
+CONFIG_DEBUG_UART_ANNOUNCE=y
CONFIG_ATMEL_USART=y
CONFIG_DM_SPI=y
CONFIG_ATMEL_SPI=y
diff --git a/configs/sama5d2_xplained_spiflash_defconfig b/configs/sama5d2_xplained_spiflash_defconfig
index b49d2adf67..51594e71f7 100644
--- a/configs/sama5d2_xplained_spiflash_defconfig
+++ b/configs/sama5d2_xplained_spiflash_defconfig
@@ -51,6 +51,12 @@ CONFIG_SPI_FLASH=y
CONFIG_SPI_FLASH_ATMEL=y
CONFIG_PINCTRL=y
CONFIG_PINCTRL_AT91PIO4=y
+CONFIG_DEBUG_UART=y
+CONFIG_DEBUG_UART_ATMEL=y
+CONFIG_DEBUG_UART_BASE=0xf8020000
+CONFIG_DEBUG_UART_CLOCK=0
+CONFIG_DEBUG_UART_BOARD_INIT=y
+CONFIG_DEBUG_UART_ANNOUNCE=y
CONFIG_ATMEL_USART=y
CONFIG_DM_SPI=y
CONFIG_ATMEL_SPI=y
diff --git a/include/configs/sama5d2_xplained.h b/include/configs/sama5d2_xplained.h
index 7fb2bdcd4c..f6946453e5 100644
--- a/include/configs/sama5d2_xplained.h
+++ b/include/configs/sama5d2_xplained.h
@@ -15,6 +15,8 @@
#include "at91-sama5_common.h"
+#define CONFIG_BOARD_EARLY_INIT_F
+
#define CONFIG_MISC_INIT_R
/* SDRAM */
--
2.39.5