/* * (C) Copyright 2001 * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc. * * SPDX-License-Identifier: GPL-2.0+ */ /* * serial.c - serial support for the gal ev board */ /* supports both the 16650 duart and the MPSC */ #include <common.h> #include <command.h> #include <galileo/memory.h> #include <serial.h> #include <linux/compiler.h> #if (defined CONFIG_SYS_INIT_CHAN1) || (defined CONFIG_SYS_INIT_CHAN2) #include <ns16550.h> #endif #include "serial.h" #include "mpsc.h" DECLARE_GLOBAL_DATA_PTR; #if (defined CONFIG_SYS_INIT_CHAN1) || (defined CONFIG_SYS_INIT_CHAN2) const NS16550_t COM_PORTS[] = { (NS16550_t) CONFIG_SYS_NS16550_COM1, (NS16550_t) CONFIG_SYS_NS16550_COM2 }; #endif #ifdef CONFIG_MPSC static int evb64260_serial_init(void) { #if (defined CONFIG_SYS_INIT_CHAN1) || (defined CONFIG_SYS_INIT_CHAN2) int clock_divisor = CONFIG_SYS_NS16550_CLK / 16 / 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 evb64260_serial_putc(const char c) { if (c == '\n') mpsc_putchar('\r'); mpsc_putchar(c); } static int evb64260_serial_getc(void) { return mpsc_getchar(); } static int evb64260_serial_tstc(void) { return mpsc_test_char(); } static void evb64260_serial_setbrg(void) { galbrg_set_baudrate(CONFIG_MPSC_PORT, gd->baudrate); } #else /* ! CONFIG_MPSC */ static int evb64260_serial_init(void) { int clock_divisor = CONFIG_SYS_NS16550_CLK / 16 / gd->baudrate; #ifdef CONFIG_SYS_INIT_CHAN1 (void)NS16550_init(COM_PORTS[0], clock_divisor); #endif #ifdef CONFIG_SYS_INIT_CHAN2 (void)NS16550_init(COM_PORTS[1], clock_divisor); #endif return (0); } static void evb64260_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 evb64260_serial_getc(void) { return NS16550_getc(COM_PORTS[CONFIG_SYS_DUART_CHAN]); } static int evb64260_serial_tstc(void) { return NS16550_tstc(COM_PORTS[CONFIG_SYS_DUART_CHAN]); } static void evb64260_serial_setbrg(void) { int clock_divisor = CONFIG_SYS_NS16550_CLK / 16 / 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 evb64260_serial_drv = { .name = "evb64260_serial", .start = evb64260_serial_init, .stop = NULL, .setbrg = evb64260_serial_setbrg, .putc = evb64260_serial_putc, .puts = default_serial_puts, .getc = evb64260_serial_getc, .tstc = evb64260_serial_tstc, }; void evb64260_serial_initialize(void) { serial_register(&evb64260_serial_drv); } __weak struct serial_device *default_serial_console(void) { return &evb64260_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