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authorGary Jennejohn <garyj@denx.de>2008-11-06 15:04:23 +0100
committerWolfgang Denk <wd@denx.de>2008-12-07 01:23:35 +0100
commit16a28ef219c27423a1ef502f19070c4d375079b8 (patch)
tree2241bdb2293824bdb7b82e1ff8d54e9246c81bcc /include/common.h
parent774ce72026f74ac9641bcbbc588b20f2e13f7ab8 (diff)
IOMUX: Add console multiplexing support.
Modifications to support console multiplexing. This is controlled using CONFIG_SYS_CONSOLE_MUX in the board configuration file. This allows a user to specify multiple console devices in the environment with a command like this: setenv stdin serial,nc. As a result, the user can enter text on both the serial and netconsole interfaces. All devices - stdin, stdout and stderr - can be set in this manner. 1) common/iomux.c and include/iomux.h contain the environment setting implementation. 2) doc/README.iomux contains a somewhat more detailed description. 3) The implementation in (1) is called from common/cmd_nvedit.c to handle setenv and from common/console.c to handle initialization of input/output devices at boot time. 4) common/console.c also contains the code needed to poll multiple console devices for input and send output to all devices registered for output. 5) include/common.h includes iomux.h and common/Makefile generates iomux.o when CONFIG_SYS_CONSOLE_MUX is set. Signed-off-by: Gary Jennejohn <garyj@denx.de>
Diffstat (limited to 'include/common.h')
-rw-r--r--include/common.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/common.h b/include/common.h
index df64bf0f41..5968036a05 100644
--- a/include/common.h
+++ b/include/common.h
@@ -678,6 +678,13 @@ void fputc(int file, const char c);
int ftstc(int file);
int fgetc(int file);
+/*
+ * CONSOLE multiplexing.
+ */
+#ifdef CONFIG_CONSOLE_MUX
+#include <iomux.h>
+#endif
+
int pcmcia_init (void);
#ifdef CONFIG_STATUS_LED