On Tue, Sep 13, 2016 at 10:49:05AM +0800, Wenyou Yang wrote:
> Enable an early debug UART to debug problems when an ICE or other
> debug mechanism is not available.
>
> Signed-off-by: Wenyou Yang <wenyou.y...@atmel.com>
> Reviewed-by: Simon Glass <s...@chromium.org>
Reviewed-by: Andreas Bießmann <andr...@biessmann.org>
> ---
>
> Changes in v2:
> - Collect Reviewed-by tags.
>
> 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 c94574b..0ae6a7d 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 ab1b58b..ba36c8f 100644
> --- a/configs/sama5d2_xplained_mmc_defconfig
> +++ b/configs/sama5d2_xplained_mmc_defconfig
> @@ -44,6 +44,12 @@ 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 ecba5ef..85f3f9c 100644
> --- a/configs/sama5d2_xplained_spiflash_defconfig
> +++ b/configs/sama5d2_xplained_spiflash_defconfig
> @@ -44,6 +44,12 @@ 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 cada04f..51fabbe 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 */
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