Enable the 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 ---
Changes in v4: - Rebase on the master branch(ad46af0e76) of u-boot-dm git tree. - Update the cover-letter. - Add Reviewed-by tag.
Changes in v3: - Rebase on the master branch (22e10be45) of u-boot-dm git tree. - Update the cover-letter.
Changes in v2: - Add [PATCH]: board: at91sam9rlek: Enable early debug UART. - Move out [PATCH]: ARM: dts: at91: add dts files for at91sam9rlek.
board/atmel/at91sam9rlek/at91sam9rlek.c | 13 +++++++++++++ configs/at91sam9rlek_dataflash_defconfig | 6 ++++++ configs/at91sam9rlek_mmc_defconfig | 6 ++++++ configs/at91sam9rlek_nandflash_defconfig | 6 ++++++ 4 files changed, 31 insertions(+)
diff --git a/board/atmel/at91sam9rlek/at91sam9rlek.c b/board/atmel/at91sam9rlek/at91sam9rlek.c index 0c4d51765e..0b603ed13a 100644 --- a/board/atmel/at91sam9rlek/at91sam9rlek.c +++ b/board/atmel/at91sam9rlek/at91sam9rlek.c @@ -7,6 +7,7 @@ */
#include <common.h> +#include <debug_uart.h> #include <asm/io.h> #include <asm/arch/at91sam9rl.h> #include <asm/arch/at91sam9rl_matrix.h> @@ -155,10 +156,22 @@ void lcd_show_board_info(void) #endif /* CONFIG_LCD_INFO */ #endif
+#ifdef CONFIG_DEBUG_UART_BOARD_INIT +void board_debug_uart_init(void) +{ + at91_seriald_hw_init(); +} +#endif + +#ifdef CONFIG_BOARD_EARLY_INIT_F int board_early_init_f(void) { +#ifdef CONFIG_DEBUG_UART + debug_uart_init(); +#endif return 0; } +#endif
int board_init(void) { diff --git a/configs/at91sam9rlek_dataflash_defconfig b/configs/at91sam9rlek_dataflash_defconfig index 24fbfe619c..d4abb2a2fd 100644 --- a/configs/at91sam9rlek_dataflash_defconfig +++ b/configs/at91sam9rlek_dataflash_defconfig @@ -34,5 +34,11 @@ CONFIG_GENERIC_ATMEL_MCI=y CONFIG_PINCTRL=y CONFIG_PINCTRL_AT91=y CONFIG_DM_SERIAL=y +CONFIG_DEBUG_UART=y +CONFIG_DEBUG_UART_ATMEL=y +CONFIG_DEBUG_UART_BASE=0xfffff200 +CONFIG_DEBUG_UART_CLOCK=100000000 +CONFIG_DEBUG_UART_BOARD_INIT=y +CONFIG_DEBUG_UART_ANNOUNCE=y CONFIG_ATMEL_USART=y CONFIG_LCD=y diff --git a/configs/at91sam9rlek_mmc_defconfig b/configs/at91sam9rlek_mmc_defconfig index a46deac284..9a40c41f36 100644 --- a/configs/at91sam9rlek_mmc_defconfig +++ b/configs/at91sam9rlek_mmc_defconfig @@ -34,5 +34,11 @@ CONFIG_GENERIC_ATMEL_MCI=y CONFIG_PINCTRL=y CONFIG_PINCTRL_AT91=y CONFIG_DM_SERIAL=y +CONFIG_DEBUG_UART=y +CONFIG_DEBUG_UART_ATMEL=y +CONFIG_DEBUG_UART_BASE=0xfffff200 +CONFIG_DEBUG_UART_CLOCK=100000000 +CONFIG_DEBUG_UART_BOARD_INIT=y +CONFIG_DEBUG_UART_ANNOUNCE=y CONFIG_ATMEL_USART=y CONFIG_LCD=y diff --git a/configs/at91sam9rlek_nandflash_defconfig b/configs/at91sam9rlek_nandflash_defconfig index b6400d0317..d68b562b0e 100644 --- a/configs/at91sam9rlek_nandflash_defconfig +++ b/configs/at91sam9rlek_nandflash_defconfig @@ -34,5 +34,11 @@ CONFIG_GENERIC_ATMEL_MCI=y CONFIG_PINCTRL=y CONFIG_PINCTRL_AT91=y CONFIG_DM_SERIAL=y +CONFIG_DEBUG_UART=y +CONFIG_DEBUG_UART_ATMEL=y +CONFIG_DEBUG_UART_BASE=0xfffff200 +CONFIG_DEBUG_UART_CLOCK=100000000 +CONFIG_DEBUG_UART_BOARD_INIT=y +CONFIG_DEBUG_UART_ANNOUNCE=y CONFIG_ATMEL_USART=y CONFIG_LCD=y