Hi Heinrich, On Sat, Sep 23, 2023 at 01:35:26AM +0200, Heinrich Schuchardt wrote: > 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.schucha...@canonical.com> > --- > arch/riscv/Kconfig | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig > index 1c62c2345b..06fae7ebe8 100644 > --- a/arch/riscv/Kconfig > +++ b/arch/riscv/Kconfig > @@ -141,6 +141,7 @@ config RISCV_MMODE > > config RISCV_SMODE > bool "Supervisor" > + imply DEBUG_UART
This patch will cause the following compilation warnings. Could you take a look at them ? It seems that some configuration values will not be set if we imply DEBUG_UART. u-boot$ make qemu-riscv64_spl_defconfig HOSTCC scripts/basic/fixdep HOSTCC scripts/kconfig/conf.o YACC scripts/kconfig/zconf.tab.c LEX scripts/kconfig/zconf.lex.c HOSTCC scripts/kconfig/zconf.tab.o HOSTLD scripts/kconfig/conf # # configuration written to .config # u-boot$ make ARCH_FLAGS="-march=rv64imafdc" -j`nproc` scripts/kconfig/conf --syncconfig Kconfig .config:78:warning: symbol value '' invalid for DEBUG_UART_BASE .config:79:warning: symbol value '' invalid for DEBUG_UART_CLOCK .config:1347:warning: symbol value '' invalid for SPL_DEBUG_UART_BASE ... Best regards, Leo > help > Choose this option to build U-Boot for RISC-V S-Mode. > > -- > 2.40.1 >
