upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/common/console.c

536 lines
11 KiB

/*
* (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 CONFIG_AMIGAONEG3SE
int console_changed = 0;
#endif
#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 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 */
/* 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 */