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-rw-r--r--common/console.c216
1 files changed, 195 insertions, 21 deletions
diff --git a/common/console.c b/common/console.c
index cfcaeb86c..89aeab69e 100644
--- a/common/console.c
+++ b/common/console.c
@@ -33,20 +33,20 @@ DECLARE_GLOBAL_DATA_PTR;
int console_changed = 0;
#endif
-#ifdef CFG_CONSOLE_IS_IN_ENV
+#ifdef CONFIG_SYS_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
+#ifdef CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE
extern int overwrite_console (void);
#define OVERWRITE_CONSOLE overwrite_console ()
#else
#define OVERWRITE_CONSOLE 0
-#endif /* CFG_CONSOLE_OVERWRITE_ROUTINE */
+#endif /* CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE */
-#endif /* CFG_CONSOLE_IS_IN_ENV */
+#endif /* CONFIG_SYS_CONSOLE_IS_IN_ENV */
static int console_setfile (int file, device_t * dev)
{
@@ -93,13 +93,83 @@ static int console_setfile (int file, device_t * dev)
return error;
}
+#if defined(CONFIG_CONSOLE_MUX)
+/** Console I/O multiplexing *******************************************/
+
+static device_t *tstcdev;
+device_t **console_devices[MAX_FILES];
+int cd_count[MAX_FILES];
+
+/*
+ * This depends on tstc() always being called before getc().
+ * This is guaranteed to be true because this routine is called
+ * only from fgetc() which assures it.
+ * No attempt is made to demultiplex multiple input sources.
+ */
+static int iomux_getc(void)
+{
+ unsigned char ret;
+
+ /* This is never called with testcdev == NULL */
+ ret = tstcdev->getc();
+ tstcdev = NULL;
+ return ret;
+}
+
+static int iomux_tstc(int file)
+{
+ int i, ret;
+ device_t *dev;
+
+ disable_ctrlc(1);
+ for (i = 0; i < cd_count[file]; i++) {
+ dev = console_devices[file][i];
+ if (dev->tstc != NULL) {
+ ret = dev->tstc();
+ if (ret > 0) {
+ tstcdev = dev;
+ disable_ctrlc(0);
+ return ret;
+ }
+ }
+ }
+ disable_ctrlc(0);
+
+ return 0;
+}
+
+static void iomux_putc(int file, const char c)
+{
+ int i;
+ device_t *dev;
+
+ for (i = 0; i < cd_count[file]; i++) {
+ dev = console_devices[file][i];
+ if (dev->putc != NULL)
+ dev->putc(c);
+ }
+}
+
+static void iomux_puts(int file, const char *s)
+{
+ int i;
+ device_t *dev;
+
+ for (i = 0; i < cd_count[file]; i++) {
+ dev = console_devices[file][i];
+ if (dev->puts != NULL)
+ dev->puts(s);
+ }
+}
+#endif /* defined(CONFIG_CONSOLE_MUX) */
+
/** U-Boot INITIAL CONSOLE-NOT COMPATIBLE FUNCTIONS *************************/
void serial_printf (const char *fmt, ...)
{
va_list args;
uint i;
- char printbuffer[CFG_PBSIZE];
+ char printbuffer[CONFIG_SYS_PBSIZE];
va_start (args, fmt);
@@ -114,8 +184,31 @@ void serial_printf (const char *fmt, ...)
int fgetc (int file)
{
- if (file < MAX_FILES)
+ if (file < MAX_FILES) {
+#if defined(CONFIG_CONSOLE_MUX)
+ /*
+ * Effectively poll for input wherever it may be available.
+ */
+ for (;;) {
+ /*
+ * Upper layer may have already called tstc() so
+ * check for that first.
+ */
+ if (tstcdev != NULL)
+ return iomux_getc();
+ iomux_tstc(file);
+#ifdef CONFIG_WATCHDOG
+ /*
+ * If the watchdog must be rate-limited then it should
+ * already be handled in board-specific code.
+ */
+ udelay(1);
+#endif
+ }
+#else
return stdio_devices[file]->getc ();
+#endif
+ }
return -1;
}
@@ -123,7 +216,11 @@ int fgetc (int file)
int ftstc (int file)
{
if (file < MAX_FILES)
+#if defined(CONFIG_CONSOLE_MUX)
+ return iomux_tstc(file);
+#else
return stdio_devices[file]->tstc ();
+#endif
return -1;
}
@@ -131,20 +228,28 @@ int ftstc (int file)
void fputc (int file, const char c)
{
if (file < MAX_FILES)
+#if defined(CONFIG_CONSOLE_MUX)
+ iomux_putc(file, c);
+#else
stdio_devices[file]->putc (c);
+#endif
}
void fputs (int file, const char *s)
{
if (file < MAX_FILES)
+#if defined(CONFIG_CONSOLE_MUX)
+ iomux_puts(file, s);
+#else
stdio_devices[file]->puts (s);
+#endif
}
void fprintf (int file, const char *fmt, ...)
{
va_list args;
uint i;
- char printbuffer[CFG_PBSIZE];
+ char printbuffer[CONFIG_SYS_PBSIZE];
va_start (args, fmt);
@@ -162,6 +267,11 @@ void fprintf (int file, const char *fmt, ...)
int getc (void)
{
+#ifdef CONFIG_DISABLE_CONSOLE
+ if (gd->flags & GD_FLG_DISABLE_CONSOLE)
+ return 0;
+#endif
+
if (gd->flags & GD_FLG_DEVINIT) {
/* Get from the standard input */
return fgetc (stdin);
@@ -173,6 +283,11 @@ int getc (void)
int tstc (void)
{
+#ifdef CONFIG_DISABLE_CONSOLE
+ if (gd->flags & GD_FLG_DISABLE_CONSOLE)
+ return 0;
+#endif
+
if (gd->flags & GD_FLG_DEVINIT) {
/* Test the standard input */
return ftstc (stdin);
@@ -189,6 +304,11 @@ void putc (const char c)
return;
#endif
+#ifdef CONFIG_DISABLE_CONSOLE
+ if (gd->flags & GD_FLG_DISABLE_CONSOLE)
+ return;
+#endif
+
if (gd->flags & GD_FLG_DEVINIT) {
/* Send to the standard output */
fputc (stdout, c);
@@ -205,6 +325,11 @@ void puts (const char *s)
return;
#endif
+#ifdef CONFIG_DISABLE_CONSOLE
+ if (gd->flags & GD_FLG_DISABLE_CONSOLE)
+ return;
+#endif
+
if (gd->flags & GD_FLG_DEVINIT) {
/* Send to the standard output */
fputs (stdout, s);
@@ -218,7 +343,7 @@ void printf (const char *fmt, ...)
{
va_list args;
uint i;
- char printbuffer[CFG_PBSIZE];
+ char printbuffer[CONFIG_SYS_PBSIZE];
va_start (args, fmt);
@@ -235,7 +360,7 @@ void printf (const char *fmt, ...)
void vprintf (const char *fmt, va_list args)
{
uint i;
- char printbuffer[CFG_PBSIZE];
+ char printbuffer[CONFIG_SYS_PBSIZE];
/* For this to work, printbuffer must be larger than
* anything we ever want to print.
@@ -294,7 +419,7 @@ inline void dbg(const char *fmt, ...)
{
va_list args;
uint i;
- char printbuffer[CFG_PBSIZE];
+ char printbuffer[CONFIG_SYS_PBSIZE];
if (!once) {
memset(screen, 0, sizeof(screen));
@@ -378,15 +503,18 @@ int console_init_f (void)
return (0);
}
-#ifdef CFG_CONSOLE_IS_IN_ENV
+#ifdef CONFIG_SYS_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;
-#ifdef CFG_CONSOLE_ENV_OVERWRITE
+#ifdef CONFIG_SYS_CONSOLE_ENV_OVERWRITE
int i;
-#endif /* CFG_CONSOLE_ENV_OVERWRITE */
+#endif /* CONFIG_SYS_CONSOLE_ENV_OVERWRITE */
+#ifdef CONFIG_CONSOLE_MUX
+ int iomux_err = 0;
+#endif
/* set default handlers at first */
gd->jt[XF_getc] = serial_getc;
@@ -405,6 +533,14 @@ int console_init_r (void)
inputdev = search_device (DEV_FLAGS_INPUT, stdinname);
outputdev = search_device (DEV_FLAGS_OUTPUT, stdoutname);
errdev = search_device (DEV_FLAGS_OUTPUT, stderrname);
+#ifdef CONFIG_CONSOLE_MUX
+ iomux_err = iomux_doenv(stdin, stdinname);
+ iomux_err += iomux_doenv(stdout, stdoutname);
+ iomux_err += iomux_doenv(stderr, stderrname);
+ if (!iomux_err)
+ /* Successful, so skip all the code below. */
+ goto done;
+#endif
}
/* if the devices are overwritten or not found, use default device */
if (inputdev == NULL) {
@@ -418,47 +554,78 @@ int console_init_r (void)
}
/* Initializes output console first */
if (outputdev != NULL) {
+#ifdef CONFIG_CONSOLE_MUX
+ /* need to set a console if not done above. */
+ iomux_doenv(stdout, outputdev->name);
+#else
console_setfile (stdout, outputdev);
+#endif
}
if (errdev != NULL) {
+#ifdef CONFIG_CONSOLE_MUX
+ /* need to set a console if not done above. */
+ iomux_doenv(stderr, errdev->name);
+#else
console_setfile (stderr, errdev);
+#endif
}
if (inputdev != NULL) {
+#ifdef CONFIG_CONSOLE_MUX
+ /* need to set a console if not done above. */
+ iomux_doenv(stdin, inputdev->name);
+#else
console_setfile (stdin, inputdev);
+#endif
}
+#ifdef CONFIG_CONSOLE_MUX
+done:
+#endif
+
gd->flags |= GD_FLG_DEVINIT; /* device initialization completed */
-#ifndef CFG_CONSOLE_INFO_QUIET
+#ifndef CONFIG_SYS_CONSOLE_INFO_QUIET
/* Print information */
puts ("In: ");
if (stdio_devices[stdin] == NULL) {
puts ("No input devices available!\n");
} else {
+#ifdef CONFIG_CONSOLE_MUX
+ iomux_printdevs(stdin);
+#else
printf ("%s\n", stdio_devices[stdin]->name);
+#endif
}
puts ("Out: ");
if (stdio_devices[stdout] == NULL) {
puts ("No output devices available!\n");
} else {
+#ifdef CONFIG_CONSOLE_MUX
+ iomux_printdevs(stdout);
+#else
printf ("%s\n", stdio_devices[stdout]->name);
+#endif
}
puts ("Err: ");
if (stdio_devices[stderr] == NULL) {
puts ("No error devices available!\n");
} else {
+#ifdef CONFIG_CONSOLE_MUX
+ iomux_printdevs(stderr);
+#else
printf ("%s\n", stdio_devices[stderr]->name);
+#endif
}
-#endif /* CFG_CONSOLE_INFO_QUIET */
+#endif /* CONFIG_SYS_CONSOLE_INFO_QUIET */
-#ifdef CFG_CONSOLE_ENV_OVERWRITE
+#ifdef CONFIG_SYS_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 */
+#endif /* CONFIG_SYS_CONSOLE_ENV_OVERWRITE */
#if 0
/* If nothing usable installed, use only the initial console */
@@ -468,7 +635,7 @@ int console_init_r (void)
return (0);
}
-#else /* CFG_CONSOLE_IS_IN_ENV */
+#else /* CONFIG_SYS_CONSOLE_IS_IN_ENV */
/* Called after the relocation - use desired console functions */
int console_init_r (void)
@@ -504,16 +671,23 @@ int console_init_r (void)
if (outputdev != NULL) {
console_setfile (stdout, outputdev);
console_setfile (stderr, outputdev);
+#ifdef CONFIG_CONSOLE_MUX
+ console_devices[stdout][0] = outputdev;
+ console_devices[stderr][0] = outputdev;
+#endif
}
/* Initializes input console */
if (inputdev != NULL) {
console_setfile (stdin, inputdev);
+#ifdef CONFIG_CONSOLE_MUX
+ console_devices[stdin][0] = inputdev;
+#endif
}
gd->flags |= GD_FLG_DEVINIT; /* device initialization completed */
-#ifndef CFG_CONSOLE_INFO_QUIET
+#ifndef CONFIG_SYS_CONSOLE_INFO_QUIET
/* Print information */
puts ("In: ");
if (stdio_devices[stdin] == NULL) {
@@ -535,7 +709,7 @@ int console_init_r (void)
} else {
printf ("%s\n", stdio_devices[stderr]->name);
}
-#endif /* CFG_CONSOLE_INFO_QUIET */
+#endif /* CONFIG_SYS_CONSOLE_INFO_QUIET */
/* Setting environment variables */
for (i = 0; i < 3; i++) {
@@ -551,4 +725,4 @@ int console_init_r (void)
return (0);
}
-#endif /* CFG_CONSOLE_IS_IN_ENV */
+#endif /* CONFIG_SYS_CONSOLE_IS_IN_ENV */
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-23 03:06:48 +0000