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 ---
Changes in v2: - Use CONFIG_DEBUG_UART_CLOCK as the input clock for the early debug UART. - Move out [PATCH 1/4] ARM: dts: at91: add dts files for at91sam9n12ek.
board/atmel/at91sam9n12ek/at91sam9n12ek.c | 13 +++++++++++++ configs/at91sam9n12ek_mmc_defconfig | 6 ++++++ configs/at91sam9n12ek_nandflash_defconfig | 6 ++++++ configs/at91sam9n12ek_spiflash_defconfig | 6 ++++++ 4 files changed, 31 insertions(+)
diff --git a/board/atmel/at91sam9n12ek/at91sam9n12ek.c b/board/atmel/at91sam9n12ek/at91sam9n12ek.c index 02b7790627..1105428986 100644 --- a/board/atmel/at91sam9n12ek/at91sam9n12ek.c +++ b/board/atmel/at91sam9n12ek/at91sam9n12ek.c @@ -13,6 +13,7 @@ #include <asm/arch/at91_rstc.h> #include <asm/arch/at91_pio.h> #include <asm/arch/clk.h> +#include <debug_uart.h> #include <lcd.h> #include <atmel_hlcdc.h> #include <netdev.h> @@ -162,10 +163,22 @@ void at91sam9n12ek_usb_hw_init(void) } #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/at91sam9n12ek_mmc_defconfig b/configs/at91sam9n12ek_mmc_defconfig index abb07260be..e7e8a014c6 100644 --- a/configs/at91sam9n12ek_mmc_defconfig +++ b/configs/at91sam9n12ek_mmc_defconfig @@ -35,6 +35,12 @@ CONFIG_SPI_FLASH_ATMEL=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=132000000 +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/at91sam9n12ek_nandflash_defconfig b/configs/at91sam9n12ek_nandflash_defconfig index 1b420e62b8..e626805591 100644 --- a/configs/at91sam9n12ek_nandflash_defconfig +++ b/configs/at91sam9n12ek_nandflash_defconfig @@ -35,6 +35,12 @@ CONFIG_SPI_FLASH_ATMEL=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=132000000 +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/at91sam9n12ek_spiflash_defconfig b/configs/at91sam9n12ek_spiflash_defconfig index 9048b14de4..a5abcd1f3b 100644 --- a/configs/at91sam9n12ek_spiflash_defconfig +++ b/configs/at91sam9n12ek_spiflash_defconfig @@ -35,6 +35,12 @@ CONFIG_SPI_FLASH_ATMEL=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=132000000 +CONFIG_DEBUG_UART_BOARD_INIT=y +CONFIG_DEBUG_UART_ANNOUNCE=y CONFIG_ATMEL_USART=y CONFIG_DM_SPI=y CONFIG_ATMEL_SPI=y