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[console] Allow usage to be defined independently for each console

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Add the concept of a "console usage", such as "standard output" or
"debug messages".  Allow usages to be associated with each console
independently.  For example, to send debugging output via the serial
port, while preventing it from appearing on the local console:

  #define CONSOLE_SERIAL CONSOLE_USAGE_ALL
  #define CONSOLE_PCBIOS ( CONSOLE_USAGE_ALL & ~CONSOLE_USAGE_DEBUG )

If no usages are explicitly specified, then a default set of usages
will be applied.  For example:

  #define CONSOLE_SERIAL

will have the same affect as

  #define CONSOLE_SERIAL CONSOLE_USAGE_ALL

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2012-03-26 17:25:08 +01:00
parent b35d454422
commit e024cd39a8
11 changed files with 155 additions and 31 deletions
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16
src/include/compiler.h
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@@ -260,19 +260,9 @@ REQUEST_EXPANDED ( CONFIG_SYMBOL );
#ifndef ASSEMBLY
/** printf() for debugging
*
* This function exists so that the DBG() macros can expand to
* printf() calls without dragging the printf() prototype into scope.
*
* As far as the compiler is concerned, dbg_printf() and printf() are
* completely unrelated calls; it's only at the assembly stage that
* references to the dbg_printf symbol are collapsed into references
* to the printf symbol.
*/
extern int __attribute__ (( format ( printf, 1, 2 ) ))
dbg_printf ( const char *fmt, ... ) asm ( "printf" );
/** printf() for debugging */
extern void __attribute__ (( format ( printf, 1, 2 ) ))
dbg_printf ( const char *fmt, ... );
extern void dbg_autocolourise ( unsigned long id );
extern void dbg_decolourise ( void );
extern void dbg_hex_dump_da ( unsigned long dispaddr,