[J-u-boot.git] / drivers / serial / serial_sbi.c

// SPDX-License-Identifier: GPL-2.0+

#include <debug_uart.h>
#include <asm/sbi.h>

#ifdef CONFIG_SBI_V01

static inline void _debug_uart_init(void)
{
}

static inline void _debug_uart_putc(int c)
{
	if (CONFIG_IS_ENABLED(RISCV_SMODE))
		sbi_console_putchar(c);
}

#else

static int sbi_dbcn_available __section(".data");

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
Commit	Line	Data
41f7be73 SH	1	// SPDX-License-Identifier: GPL-2.0+
	2
	3	#include <debug_uart.h>
	4	#include <asm/sbi.h>
	5
dfe08374 HS	6	#ifdef CONFIG_SBI_V01
dfe08374 HS	7
41f7be73 SH	8	static inline void _debug_uart_init(void)
	9	{
	10	}
	11
	12	static inline void _debug_uart_putc(int c)
	13	{
	14	if (CONFIG_IS_ENABLED(RISCV_SMODE))
	15	sbi_console_putchar(c);
	16	}
	17
dfe08374 HS	18	#else
dfe08374 HS	19
25e7d4bf	20	static int sbi_dbcn_available __section(".data");
dfe08374 HS	21
	22	static inline void _debug_uart_init(void)
	23	{
	24	if (CONFIG_IS_ENABLED(RISCV_SMODE))
	25	sbi_dbcn_available = sbi_probe_extension(SBI_EXT_DBCN);
	26	}
	27
	28	static inline void _debug_uart_putc(int ch)
	29	{
	30	if (CONFIG_IS_ENABLED(RISCV_SMODE) && sbi_dbcn_available)
	31	sbi_dbcn_write_byte(ch);
	32	}
	33
	34	#endif
	35
41f7be73	36	DEBUG_UART_FUNCS