riscv: enable CONFIG_DEBUG_UART by default

Most boards don't enable the pre-console buffer. So we will not see any
early messages. OpenSBI 1.3 provides us with the debug console extension
that can fill this gap.

For S-Mode U-Boot enable CONFIG_DEBUG_UART by default.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 1c62c2345b015417485c2bbbaf41de0b3c351a44..06fae7ebe83c38511063d0539aa344092b4510de 100644 (file)
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -141,6 +141,7 @@ config RISCV_MMODE
 
 config RISCV_SMODE
        bool "Supervisor"
+       imply DEBUG_UART
        help
          Choose this option to build U-Boot for RISC-V S-Mode.