From d68e7faac08be5424c748c0ead9b07dd00a43cc1 Mon Sep 17 00:00:00 2001 From: Sonic Zhang Date: Thu, 14 Mar 2013 15:13:30 +0800 Subject: blackfin: Add memory virtual console to blackfin serial driver. Signed-off-by: Sonic Zhang --- arch/blackfin/cpu/serial.c | 60 +++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 59 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/blackfin/cpu/serial.c b/arch/blackfin/cpu/serial.c index 89290d675e8..c453a03c0cb 100644 --- a/arch/blackfin/cpu/serial.c +++ b/arch/blackfin/cpu/serial.c @@ -351,4 +351,62 @@ void _serial_early_init(void) } #endif -#endif +#elif defined(CONFIG_UART_MEM) + +char serial_logbuf[CONFIG_UART_MEM]; +char *serial_logbuf_head = serial_logbuf; + +int serial_mem_init(void) +{ + serial_logbuf_head = serial_logbuf; + return 0; +} + +void serial_mem_setbrg(void) +{ +} + +int serial_mem_tstc(void) +{ + return 0; +} + +int serial_mem_getc(void) +{ + return 0; +} + +void serial_mem_putc(const char c) +{ + *serial_logbuf_head = c; + if (++serial_logbuf_head == serial_logbuf + CONFIG_UART_MEM) + serial_logbuf_head = serial_logbuf; +} + +void serial_mem_puts(const char *s) +{ + while (*s) + serial_putc(*s++); +} + +struct serial_device bfin_serial_mem_device = { + .name = "bfin_uart_mem", + .start = serial_mem_init, + .setbrg = serial_mem_setbrg, + .getc = serial_mem_getc, + .tstc = serial_mem_tstc, + .putc = serial_mem_putc, + .puts = serial_mem_puts, +}; + + +__weak struct serial_device *default_serial_console(void) +{ + return &bfin_serial_mem_device; +} + +void bfin_serial_initialize(void) +{ + serial_register(&bfin_serial_mem_device); +} +#endif /* CONFIG_UART_MEM */ -- cgit v1.2.3