171 lines
3.0 KiB
C
171 lines
3.0 KiB
C
/*
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* (C) Copyright 2001
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* Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.
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*
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* modified for marvell db64360 eval board by
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* Ingo Assmus <ingo.assmus@keymile.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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/*
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* serial.c - serial support for the gal ev board
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*/
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/* supports both the 16650 duart and the MPSC */
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#include <common.h>
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#include <command.h>
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#include <serial.h>
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#include <linux/compiler.h>
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#include "../include/memory.h"
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#ifdef CONFIG_DB64360
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#include "../db64360/mpsc.h"
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#endif
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#ifdef CONFIG_DB64460
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#include "../db64460/mpsc.h"
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#endif
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#include "ns16550.h"
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DECLARE_GLOBAL_DATA_PTR;
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#ifdef CONFIG_MPSC
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static int marvell_serial_init(void)
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{
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#if (defined CONFIG_SYS_INIT_CHAN1) || (defined CONFIG_SYS_INIT_CHAN2)
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int clock_divisor = 230400 / gd->baudrate;
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#endif
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mpsc_init (gd->baudrate);
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/* init the DUART chans so that KGDB in the kernel can use them */
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#ifdef CONFIG_SYS_INIT_CHAN1
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NS16550_reinit (COM_PORTS[0], clock_divisor);
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#endif
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#ifdef CONFIG_SYS_INIT_CHAN2
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NS16550_reinit (COM_PORTS[1], clock_divisor);
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#endif
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return (0);
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}
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static void marvell_serial_putc(const char c)
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{
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if (c == '\n')
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mpsc_putchar ('\r');
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mpsc_putchar (c);
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}
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static int marvell_serial_getc(void)
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{
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return mpsc_getchar ();
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}
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static int marvell_serial_tstc(void)
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{
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return mpsc_test_char ();
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}
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static void marvell_serial_setbrg(void)
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{
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galbrg_set_baudrate (CONFIG_MPSC_PORT, gd->baudrate);
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}
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#else /* ! CONFIG_MPSC */
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static int marvell_serial_init(void)
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{
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int clock_divisor = 230400 / gd->baudrate;
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#ifdef CONFIG_SYS_INIT_CHAN1
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(void) NS16550_init (0, clock_divisor);
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#endif
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#ifdef CONFIG_SYS_INIT_CHAN2
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(void) NS16550_init (1, clock_divisor);
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#endif
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return (0);
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}
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static void marvell_serial_putc(const char c)
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{
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if (c == '\n')
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NS16550_putc (COM_PORTS[CONFIG_SYS_DUART_CHAN], '\r');
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NS16550_putc (COM_PORTS[CONFIG_SYS_DUART_CHAN], c);
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}
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static int marvell_serial_getc(void)
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{
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return NS16550_getc (COM_PORTS[CONFIG_SYS_DUART_CHAN]);
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}
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static int marvell_serial_tstc(void)
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{
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return NS16550_tstc (COM_PORTS[CONFIG_SYS_DUART_CHAN]);
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}
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static void marvell_serial_setbrg(void)
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{
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int clock_divisor = 230400 / gd->baudrate;
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#ifdef CONFIG_SYS_INIT_CHAN1
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NS16550_reinit (COM_PORTS[0], clock_divisor);
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#endif
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#ifdef CONFIG_SYS_INIT_CHAN2
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NS16550_reinit (COM_PORTS[1], clock_divisor);
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#endif
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}
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#endif /* CONFIG_MPSC */
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static struct serial_device marvell_serial_drv = {
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.name = "marvell_serial",
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.start = marvell_serial_init,
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.stop = NULL,
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.setbrg = marvell_serial_setbrg,
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.putc = marvell_serial_putc,
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.puts = default_serial_puts,
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.getc = marvell_serial_getc,
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.tstc = marvell_serial_tstc,
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};
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void marvell_serial_initialize(void)
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{
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serial_register(&marvell_serial_drv);
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}
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__weak struct serial_device *default_serial_console(void)
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{
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return &marvell_serial_drv;
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}
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#if defined(CONFIG_CMD_KGDB)
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void kgdb_serial_init (void)
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{
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}
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void putDebugChar (int c)
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{
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serial_putc (c);
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}
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void putDebugStr (const char *str)
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{
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serial_puts (str);
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}
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int getDebugChar (void)
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{
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return serial_getc ();
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}
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void kgdb_interruptible (int yes)
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{
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return;
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}
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#endif
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