diff options
Diffstat (limited to 'drivers/serial/serial_sbi.c')
| -rw-r--r-- | drivers/serial/serial_sbi.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/serial/serial_sbi.c b/drivers/serial/serial_sbi.c index b9f35ed36e..a51a96c1ef 100644 --- a/drivers/serial/serial_sbi.c +++ b/drivers/serial/serial_sbi.c @@ -3,6 +3,8 @@ #include <debug_uart.h> #include <asm/sbi.h> +#ifdef CONFIG_SBI_V01 + static inline void _debug_uart_init(void) { } @@ -13,4 +15,22 @@ static inline void _debug_uart_putc(int c) sbi_console_putchar(c); } +#else + +static int sbi_dbcn_available; + +static inline void _debug_uart_init(void) +{ + if (CONFIG_IS_ENABLED(RISCV_SMODE)) + sbi_dbcn_available = sbi_probe_extension(SBI_EXT_DBCN); +} + +static inline void _debug_uart_putc(int ch) +{ + if (CONFIG_IS_ENABLED(RISCV_SMODE) && sbi_dbcn_available) + sbi_dbcn_write_byte(ch); +} + +#endif + DEBUG_UART_FUNCS |