x86_uart.c File Reference

16550-compatible UART More...

#include <string.h>
#include <ipxe/serial.h>
#include <ipxe/ns16550.h>

Go to the source code of this file.

Macros
#define	ISA_UART(NAME, BASE)
	Define a fixed ISA UART.

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)
	ISA_UART (com1, COM1_BASE)
	ISA_UART (com2, COM2_BASE)
	ISA_UART (com3, COM3_BASE)
	ISA_UART (com4, COM4_BASE)
int	uart_register_fixed (void)
	Register fixed ISA UARTs.

Detailed Description

16550-compatible UART

Definition in file x86_uart.c.

Macro Definition Documentation

ISA_UART

#define ISA_UART	(		NAME,
			BASE )

Value:

        static struct ns16550_uart ns16550_ ## NAME = {                     \
                .base = ( ( void * ) (BASE) ),                              \
                .clock = NS16550_CLK_DEFAULT,                                \
        };                                                              \
        struct uart NAME = {                                                \
                .refcnt = REF_INIT ( ref_no_free ),                  \
                .name = #NAME,                                          \
                .op = &ns16550_operations,                          \
                .priv = &ns16550_ ## NAME,                              \
        }

Define a fixed ISA UART.

Definition at line 37 of file x86_uart.c.

#define ISA_UART( NAME, BASE )                                          \
        static struct ns16550_uart ns16550_ ## NAME = {                 \
                .base = ( ( void * ) (BASE) ),                          \
                .clock = NS16550_CLK_DEFAULT,                           \
        };                                                              \
        struct uart NAME = {                                            \
                .refcnt = REF_INIT ( ref_no_free ),                     \
                .name = #NAME,                                          \
                .op = &ns16550_operations,                              \
                .priv = &ns16550_ ## NAME,                              \
        }

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_OR_LATER_OR_UBDL

)

ISA_UART() [1/4]

ISA_UART	(	com1	,
		COM1_BASE	)

References com1, and COM1_BASE.

ISA_UART() [2/4]

ISA_UART	(	com2	,
		COM2_BASE	)

References com2, and COM2_BASE.

ISA_UART() [3/4]

ISA_UART	(	com3	,
		COM3_BASE	)

References com3, and COM3_BASE.

ISA_UART() [4/4]

ISA_UART	(	com4	,
		COM4_BASE	)

References com4, and COM4_BASE.

uart_register_fixed()

int uart_register_fixed

(

void

)

Register fixed ISA UARTs.

Register fixed UARTs (when not provided by platform)

Return values

rc	Return status code

Definition at line 60 of file x86_uart.c.

                                 {
        static struct uart *ports[] = { COM1, COM2, COM3, COM4 };
        unsigned int i;
        int rc;
 
        /* Register all fixed ISA UARTs */
        for ( i = 0 ; i < ( sizeof ( ports ) / sizeof ( ports[0] ) ) ; i++ ) {
                if ( ( rc = uart_register ( ports[i] ) ) != 0 ) {
                        DBGC ( ports[i], "UART could not register %s: %s\n",
                               ports[i]->name, strerror ( rc ) );
                        return rc;
                }
        }
 
        return 0;
}

References COM1, COM2, COM3, COM4, DBGC, name, rc, strerror(), and uart_register().