Initial revision

1 files changed, 532 insertions, 0 deletions

diff --git a/common/console.c b/common/console.c
new file mode 100644
index 0000000..f99dfcc
--- /dev/null
+++ b/common/console.c
@@ -0,0 +1,532 @@
+/*
+ * (C) Copyright 2000
+ * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
+ *
+ * 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
+ */
+
+#include <common.h>
+#include <stdarg.h>
+#include <malloc.h>
+#include <console.h>
+#include <syscall.h>
+
+void **syscall_tbl;
+
+#ifdef CFG_CONSOLE_IS_IN_ENV
+/*
+ * if overwrite_console returns 1, the stdin, stderr and stdout
+ * are switched to the serial port, else the settings in the
+ * environment are used
+ */
+#ifdef CFG_CONSOLE_OVERWRITE_ROUTINE
+extern int overwrite_console (void);
+#else
+int overwrite_console (void)
+{
+	return (0);
+}
+#endif /* CFG_CONSOLE_OVERWRITE_ROUTINE */
+
+#endif /* CFG_CONSOLE_IS_IN_ENV */
+
+static int console_setfile (int file, device_t * dev)
+{
+	int error = 0;
+
+	if (dev == NULL)
+		return -1;
+
+	switch (file) {
+	case stdin:
+	case stdout:
+	case stderr:
+		/* Start new device */
+		if (dev->start) {
+			error = dev->start ();
+			/* If it's not started dont use it */
+			if (error < 0)
+				break;
+		}
+
+		/* Assign the new device (leaving the existing one started) */
+		stdio_devices[file] = dev;
+
+		/*
+		 * Update monitor functions
+		 * (to use the console stuff by other applications)
+		 */
+		switch (file) {
+		case stdin:
+			syscall_tbl[SYSCALL_GETC] = dev->getc;
+			syscall_tbl[SYSCALL_TSTC] = dev->tstc;
+			break;
+		case stdout:
+			syscall_tbl[SYSCALL_PUTC] = dev->putc;
+			syscall_tbl[SYSCALL_PUTS] = dev->puts;
+			syscall_tbl[SYSCALL_PRINTF] = printf;
+			break;
+		}
+		break;
+
+	default:		/* Invalid file ID */
+		error = -1;
+	}
+	return error;
+}
+
+/** U-Boot INITIAL CONSOLE-NOT COMPATIBLE FUNCTIONS *************************/
+
+void serial_printf (const char *fmt, ...)
+{
+	va_list args;
+	uint i;
+	char printbuffer[CFG_PBSIZE];
+
+	va_start (args, fmt);
+
+	/* For this to work, printbuffer must be larger than
+	 * anything we ever want to print.
+	 */
+	i = vsprintf (printbuffer, fmt, args);
+	va_end (args);
+
+	serial_puts (printbuffer);
+}
+
+int fgetc (int file)
+{
+	if (file < MAX_FILES)
+		return stdio_devices[file]->getc ();
+
+	return -1;
+}
+
+int ftstc (int file)
+{
+	if (file < MAX_FILES)
+		return stdio_devices[file]->tstc ();
+
+	return -1;
+}
+
+void fputc (int file, const char c)
+{
+	if (file < MAX_FILES)
+		stdio_devices[file]->putc (c);
+}
+
+void fputs (int file, const char *s)
+{
+	if (file < MAX_FILES)
+		stdio_devices[file]->puts (s);
+}
+
+void fprintf (int file, const char *fmt, ...)
+{
+	va_list args;
+	uint i;
+	char printbuffer[CFG_PBSIZE];
+
+	va_start (args, fmt);
+
+	/* For this to work, printbuffer must be larger than
+	 * anything we ever want to print.
+	 */
+	i = vsprintf (printbuffer, fmt, args);
+	va_end (args);
+
+	/* Send to desired file */
+	fputs (file, printbuffer);
+}
+
+/** U-Boot INITIAL CONSOLE-COMPATIBLE FUNCTION *****************************/
+
+int getc (void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	if (gd->flags & GD_FLG_DEVINIT) {
+		/* Get from the standard input */
+		return fgetc (stdin);
+	}
+
+	/* Send directly to the handler */
+	return serial_getc ();
+}
+
+int tstc (void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	if (gd->flags & GD_FLG_DEVINIT) {
+		/* Test the standard input */
+		return ftstc (stdin);
+	}
+
+	/* Send directly to the handler */
+	return serial_tstc ();
+}
+
+void putc (const char c)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	if (gd->flags & GD_FLG_DEVINIT) {
+		/* Send to the standard output */
+		fputc (stdout, c);
+	} else {
+		/* Send directly to the handler */
+		serial_putc (c);
+	}
+}
+
+void puts (const char *s)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	if (gd->flags & GD_FLG_DEVINIT) {
+		/* Send to the standard output */
+		fputs (stdout, s);
+	} else {
+		/* Send directly to the handler */
+		serial_puts (s);
+	}
+}
+
+void printf (const char *fmt, ...)
+{
+	va_list args;
+	uint i;
+	char printbuffer[CFG_PBSIZE];
+
+	va_start (args, fmt);
+
+	/* For this to work, printbuffer must be larger than
+	 * anything we ever want to print.
+	 */
+	i = vsprintf (printbuffer, fmt, args);
+	va_end (args);
+
+	/* Print the string */
+	puts (printbuffer);
+}
+
+/* test if ctrl-c was pressed */
+static int ctrlc_disabled = 0;	/* see disable_ctrl() */
+static int ctrlc_was_pressed = 0;
+int ctrlc (void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	if (!ctrlc_disabled && gd->have_console) {
+		if (tstc ()) {
+			switch (getc ()) {
+			case 0x03:		/* ^C - Control C */
+				ctrlc_was_pressed = 1;
+				return 1;
+			default:
+				break;
+			}
+		}
+	}
+	return 0;
+}
+
+/* pass 1 to disable ctrlc() checking, 0 to enable.
+ * returns previous state
+ */
+int disable_ctrlc (int disable)
+{
+	int prev = ctrlc_disabled;	/* save previous state */
+
+	ctrlc_disabled = disable;
+	return prev;
+}
+
+int had_ctrlc (void)
+{
+	return ctrlc_was_pressed;
+}
+
+void clear_ctrlc (void)
+{
+	ctrlc_was_pressed = 0;
+}
+
+#ifdef CONFIG_MODEM_SUPPORT_DEBUG
+char	screen[1024];
+char *cursor = screen;
+int once = 0;
+inline void dbg(const char *fmt, ...)
+{
+	va_list	args;
+	uint	i;
+	char	printbuffer[CFG_PBSIZE];
+
+	if (!once) {
+		memset(screen, 0, sizeof(screen));
+		once++;
+	}
+
+	va_start(args, fmt);
+
+	/* For this to work, printbuffer must be larger than
+	 * anything we ever want to print.
+	 */
+	i = vsprintf(printbuffer, fmt, args);
+	va_end(args);
+
+	if ((screen + sizeof(screen) - 1 - cursor) < strlen(printbuffer)+1) {
+		memset(screen, 0, sizeof(screen));
+		cursor = screen;
+	}
+	sprintf(cursor, printbuffer);
+	cursor += strlen(printbuffer);
+
+}
+#else
+inline void dbg(const char *fmt, ...)
+{
+}
+#endif
+
+/** U-Boot INIT FUNCTIONS *************************************************/
+
+int console_assign (int file, char *devname)
+{
+	int flag, i;
+
+	/* Check for valid file */
+	switch (file) {
+	case stdin:
+		flag = DEV_FLAGS_INPUT;
+		break;
+	case stdout:
+	case stderr:
+		flag = DEV_FLAGS_OUTPUT;
+		break;
+	default:
+		return -1;
+	}
+
+	/* Check for valid device name */
+
+	for (i = 1; i <= ListNumItems (devlist); i++) {
+		device_t *dev = ListGetPtrToItem (devlist, i);
+
+		if (strcmp (devname, dev->name) == 0) {
+			if (dev->flags & flag)
+				return console_setfile (file, dev);
+
+			return -1;
+		}
+	}
+
+	return -1;
+}
+
+/* Called before relocation - use serial functions */
+int console_init_f (void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	gd->have_console = 1;
+	return (0);
+}
+
+#ifdef CFG_CONSOLE_IS_IN_ENV
+/* search a device */
+device_t *search_device (int flags, char *name)
+{
+	int i, items;
+	device_t *dev = NULL;
+
+	items = ListNumItems (devlist);
+	if (name == NULL)
+		return dev;
+
+	for (i = 1; i <= items; i++) {
+		dev = ListGetPtrToItem (devlist, i);
+		if ((dev->flags & flags) && (strcmp (name, dev->name) == 0)) {
+			break;
+		}
+	}
+	return dev;
+}
+#endif /* CFG_CONSOLE_IS_IN_ENV */
+
+#ifdef CFG_CONSOLE_IS_IN_ENV
+/* Called after the relocation - use desired console functions */
+int console_init_r (void)
+{
+	char *stdinname, *stdoutname, *stderrname;
+	device_t *inputdev = NULL, *outputdev = NULL, *errdev = NULL;
+
+	/* set default handlers at first */
+	syscall_tbl[SYSCALL_GETC] = serial_getc;
+	syscall_tbl[SYSCALL_TSTC] = serial_tstc;
+	syscall_tbl[SYSCALL_PUTC] = serial_putc;
+	syscall_tbl[SYSCALL_PUTS] = serial_puts;
+	syscall_tbl[SYSCALL_PRINTF] = serial_printf;
+
+	/* stdin stdout and stderr are in environment */
+	/* scan for it */
+	stdinname  = getenv ("stdin");
+	stdoutname = getenv ("stdout");
+	stderrname = getenv ("stderr");
+
+	if (overwrite_console () == 0) { /* if not overwritten by config switch */
+		inputdev  = search_device (DEV_FLAGS_INPUT,  stdinname);
+		outputdev = search_device (DEV_FLAGS_OUTPUT, stdoutname);
+		errdev    = search_device (DEV_FLAGS_OUTPUT, stderrname);
+	}
+	/* if the devices are overwritten or not found, use default device */
+	if (inputdev == NULL) {
+		inputdev  = search_device (DEV_FLAGS_INPUT,  "serial");
+	}
+	if (outputdev == NULL) {
+		outputdev = search_device (DEV_FLAGS_OUTPUT, "serial");
+	}
+	if (errdev == NULL) {
+		errdev    = search_device (DEV_FLAGS_OUTPUT, "serial");
+	}
+	/* Initializes output console first */
+	if (outputdev != NULL) {
+		console_setfile (stdout, outputdev);
+	}
+	if (errdev != NULL) {
+		console_setfile (stderr, errdev);
+	}
+	if (inputdev != NULL) {
+		console_setfile (stdin, inputdev);
+	}
+
+#ifndef CFG_CONSOLE_INFO_QUIET
+	/* Print information */
+	printf ("In:    ");
+	if (stdio_devices[stdin] == NULL) {
+		printf ("No input devices available!\n");
+	} else {
+		printf ("%s\n", stdio_devices[stdin]->name);
+	}
+
+	printf ("Out:   ");
+	if (stdio_devices[stdout] == NULL) {
+		printf ("No output devices available!\n");
+	} else {
+		printf ("%s\n", stdio_devices[stdout]->name);
+	}
+
+	printf ("Err:   ");
+	if (stdio_devices[stderr] == NULL) {
+		printf ("No error devices available!\n");
+	} else {
+		printf ("%s\n", stdio_devices[stderr]->name);
+	}
+#endif /* CFG_CONSOLE_INFO_QUIET */
+
+#ifdef CFG_CONSOLE_ENV_OVERWRITE
+	/* set the environment variables (will overwrite previous env settings) */
+	for (i = 0; i < 3; i++) {
+		setenv (stdio_names[i], stdio_devices[i]->name);
+	}
+#endif /*  CFG_CONSOLE_ENV_OVERWRITE */
+
+#if 0
+	/* If nothing usable installed, use only the initial console */
+	if ((stdio_devices[stdin] == NULL) && (stdio_devices[stdout] == NULL))
+		return (0);
+#endif
+	return (0);
+}
+
+#else /* CFG_CONSOLE_IS_IN_ENV */
+
+/* Called after the relocation - use desired console functions */
+int console_init_r (void)
+{
+	device_t *inputdev = NULL, *outputdev = NULL;
+	int i, items = ListNumItems (devlist);
+
+	/* Scan devices looking for input and output devices */
+	for (i = 1;
+	     (i <= items) && ((inputdev == NULL) || (outputdev == NULL));
+	     i++
+	    ) {
+		device_t *dev = ListGetPtrToItem (devlist, i);
+
+		if ((dev->flags & DEV_FLAGS_INPUT) && (inputdev == NULL)) {
+			inputdev = dev;
+		}
+		if ((dev->flags & DEV_FLAGS_OUTPUT) && (outputdev == NULL)) {
+			outputdev = dev;
+		}
+	}
+
+	/* Initializes output console first */
+	if (outputdev != NULL) {
+		console_setfile (stdout, outputdev);
+		console_setfile (stderr, outputdev);
+	}
+
+	/* Initializes input console */
+	if (inputdev != NULL) {
+		console_setfile (stdin, inputdev);
+	}
+
+#ifndef CFG_CONSOLE_INFO_QUIET
+	/* Print informations */
+	printf ("In:    ");
+	if (stdio_devices[stdin] == NULL) {
+		printf ("No input devices available!\n");
+	} else {
+		printf ("%s\n", stdio_devices[stdin]->name);
+	}
+
+	printf ("Out:   ");
+	if (stdio_devices[stdout] == NULL) {
+		printf ("No output devices available!\n");
+	} else {
+		printf ("%s\n", stdio_devices[stdout]->name);
+	}
+
+	printf ("Err:   ");
+	if (stdio_devices[stderr] == NULL) {
+		printf ("No error devices available!\n");
+	} else {
+		printf ("%s\n", stdio_devices[stderr]->name);
+	}
+#endif /* CFG_CONSOLE_INFO_QUIET */
+
+	/* Setting environment variables */
+	for (i = 0; i < 3; i++) {
+		setenv (stdio_names[i], stdio_devices[i]->name);
+	}
+
+#if 0
+	/* If nothing usable installed, use only the initial console */
+	if ((stdio_devices[stdin] == NULL) && (stdio_devices[stdout] == NULL))
+		return (0);
+#endif
+
+	return (0);
+}
+
+#endif /* CFG_CONSOLE_IS_IN_ENV */