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Diffstat (limited to 'board/Marvell/common/serial.c')
-rw-r--r-- | board/Marvell/common/serial.c | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/board/Marvell/common/serial.c b/board/Marvell/common/serial.c new file mode 100644 index 0000000..4a780c3 --- /dev/null +++ b/board/Marvell/common/serial.c @@ -0,0 +1,187 @@ +/* + * (C) Copyright 2001 + * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc. + * + * modified for marvell db64360 eval board by + * Ingo Assmus <ingo.assmus@keymile.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +/* + * serial.c - serial support for the gal ev board + */ + +/* supports both the 16650 duart and the MPSC */ + +#include <common.h> +#include <command.h> +#include <serial.h> +#include <linux/compiler.h> + +#include "../include/memory.h" +#include "serial.h" + +#ifdef CONFIG_DB64360 +#include "../db64360/mpsc.h" +#endif + +#ifdef CONFIG_DB64460 +#include "../db64460/mpsc.h" +#endif + +#include "ns16550.h" + +DECLARE_GLOBAL_DATA_PTR; + +#ifdef CONFIG_MPSC +static int marvell_serial_init(void) +{ +#if (defined CONFIG_SYS_INIT_CHAN1) || (defined CONFIG_SYS_INIT_CHAN2) + int clock_divisor = 230400 / gd->baudrate; +#endif + + mpsc_init (gd->baudrate); + + /* init the DUART chans so that KGDB in the kernel can use them */ +#ifdef CONFIG_SYS_INIT_CHAN1 + NS16550_reinit (COM_PORTS[0], clock_divisor); +#endif +#ifdef CONFIG_SYS_INIT_CHAN2 + NS16550_reinit (COM_PORTS[1], clock_divisor); +#endif + return (0); +} + +static void marvell_serial_putc(const char c) +{ + if (c == '\n') + mpsc_putchar ('\r'); + + mpsc_putchar (c); +} + +static int marvell_serial_getc(void) +{ + return mpsc_getchar (); +} + +static int marvell_serial_tstc(void) +{ + return mpsc_test_char (); +} + +static void marvell_serial_setbrg(void) +{ + galbrg_set_baudrate (CONFIG_MPSC_PORT, gd->baudrate); +} + +#else /* ! CONFIG_MPSC */ + +static int marvell_serial_init(void) +{ + int clock_divisor = 230400 / gd->baudrate; + +#ifdef CONFIG_SYS_INIT_CHAN1 + (void) NS16550_init (0, clock_divisor); +#endif +#ifdef CONFIG_SYS_INIT_CHAN2 + (void) NS16550_init (1, clock_divisor); +#endif + return (0); +} + +static void marvell_serial_putc(const char c) +{ + if (c == '\n') + NS16550_putc (COM_PORTS[CONFIG_SYS_DUART_CHAN], '\r'); + + NS16550_putc (COM_PORTS[CONFIG_SYS_DUART_CHAN], c); +} + +static int marvell_serial_getc(void) +{ + return NS16550_getc (COM_PORTS[CONFIG_SYS_DUART_CHAN]); +} + +static int marvell_serial_tstc(void) +{ + return NS16550_tstc (COM_PORTS[CONFIG_SYS_DUART_CHAN]); +} + +static void marvell_serial_setbrg(void) +{ + int clock_divisor = 230400 / gd->baudrate; + +#ifdef CONFIG_SYS_INIT_CHAN1 + NS16550_reinit (COM_PORTS[0], clock_divisor); +#endif +#ifdef CONFIG_SYS_INIT_CHAN2 + NS16550_reinit (COM_PORTS[1], clock_divisor); +#endif +} + +#endif /* CONFIG_MPSC */ + +static struct serial_device marvell_serial_drv = { + .name = "marvell_serial", + .start = marvell_serial_init, + .stop = NULL, + .setbrg = marvell_serial_setbrg, + .putc = marvell_serial_putc, + .puts = default_serial_puts, + .getc = marvell_serial_getc, + .tstc = marvell_serial_tstc, +}; + +void marvell_serial_initialize(void) +{ + serial_register(&marvell_serial_drv); +} + +__weak struct serial_device *default_serial_console(void) +{ + return &marvell_serial_drv; +} + +#if defined(CONFIG_CMD_KGDB) +void kgdb_serial_init (void) +{ +} + +void putDebugChar (int c) +{ + serial_putc (c); +} + +void putDebugStr (const char *str) +{ + serial_puts (str); +} + +int getDebugChar (void) +{ + return serial_getc (); +} + +void kgdb_interruptible (int yes) +{ + return; +} +#endif |