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 Bießmann andreas.devel@googlemail.com ---
Changes in v3: - Collect Reviewed-by tag.
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 cceccd2..c5337af 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 08ecea6..8a786f1 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 b49d2ad..51594e7 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 c3515cc..bef478d 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 */