ARM: debug: stm32: add UART early console configuration for STM32F7

Early console is hardcoded on USART1 in current implementation.
With this patch, default UART instance is USART1, but other UART instances
can be configured by setting physical and virtual base addresses in
menuconfig.

Signed-off-by: Erwan Le Ray <erwan.leray@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>

diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 51445c8..a3bafa8 100644 (file)
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -1213,12 +1213,13 @@ choice
 
        config STM32F7_DEBUG_UART
                bool "Use STM32F7 UART for low-level debug"
-               depends on ARCH_STM32
+               depends on MACH_STM32F746 || MACH_STM32F769
                select DEBUG_STM32_UART
                help
                  Say Y here if you want kernel low-level debugging support
                  on STM32F7 based platforms, which default UART is wired on
-                 USART1.
+                 USART1, but another UART instance can be selected by modifying
+                 CONFIG_DEBUG_UART_PHYS.
 
                  If unsure, say N.
 
@@ -1620,7 +1621,7 @@ 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
+       default 0x40011000 if STM32F4_DEBUG_UART || STM32F7_DEBUG_UART
        default 0x40028000 if DEBUG_AT91_SAMV7_USART1
        default 0x40081000 if DEBUG_LPC18XX_UART0
        default 0x40090000 if DEBUG_LPC32XX