Commit 33cab895 authored by Erwan Le Ray's avatar Erwan Le Ray Committed by Alexandre Torgue
Browse files

ARM: debug: stm32: add UART early console support for STM32H7 



Add support of early console for STM32H7. Default UART instance is USART1,
but other UART instances can be configured by setting physical and virtual
base addresses in menuconfig.

Signed-off-by: default avatarErwan Le Ray <erwan.leray@st.com>
Signed-off-by: default avatarAlexandre Torgue <alexandre.torgue@st.com>
parent 13f71fa8

arch/arm/Kconfig.debug

+14 −1
Original line number Diff line number Diff line
@@ -1223,6 +1223,18 @@ choice 


		  If unsure, say N.



	config STM32H7_DEBUG_UART

		bool "Use STM32H7 UART for low-level debug"

		depends on MACH_STM32H743

		select DEBUG_STM32_UART

		help

		  Say Y here if you want kernel low-level debugging support

		  on STM32H7 based platforms, which default UART is wired on

		  USART1, but another UART instance can be selected by modifying

		  CONFIG_DEBUG_UART_PHYS.



		  If unsure, say N.



	config TEGRA_DEBUG_UART_AUTO_ODMDATA

		bool "Kernel low-level debugging messages via Tegra UART via ODMDATA"

		depends on ARCH_TEGRA
@@ -1621,7 +1633,8 @@ config DEBUG_UART_PHYS 
	default 0x3e000000 if DEBUG_BCM_KONA_UART

	default 0x3f201000 if DEBUG_BCM2836

	default 0x4000e400 if DEBUG_LL_UART_EFM32

	default 0x40011000 if STM32F4_DEBUG_UART || STM32F7_DEBUG_UART

	default 0x40011000 if STM32F4_DEBUG_UART || STM32F7_DEBUG_UART || \

				STM32H7_DEBUG_UART

	default 0x40028000 if DEBUG_AT91_SAMV7_USART1

	default 0x40081000 if DEBUG_LPC18XX_UART0

	default 0x40090000 if DEBUG_LPC32XX

arch/arm/include/debug/stm32.S

+1 −1
Original line number Diff line number Diff line
@@ -9,7 +9,7 @@ 
#define STM32_USART_TDR_OFF		0x04

#endif



#ifdef CONFIG_STM32F7_DEBUG_UART

#if defined(CONFIG_STM32F7_DEBUG_UART) || defined(CONFIG_STM32H7_DEBUG_UART)

#define STM32_USART_SR_OFF		0x1C

#define STM32_USART_TDR_OFF		0x28

#endif