linux/arch/powerpc/xmon/start.c
Benjamin Herrenschmidt 51d3082fe6 [PATCH] powerpc: Unify udbg (#2)
This patch unifies udbg for both ppc32 and ppc64 when building the
merged achitecture. xmon now has a single "back end". The powermac udbg
stuff gets enriched with some ADB capabilities and btext output. In
addition, the early_init callback is now called on ppc32 as well,
approx. in the same order as ppc64 regarding device-tree manipulations.
The init sequences of ppc32 and ppc64 are getting closer, I'll unify
them in a later patch.

For now, you can force udbg to the scc using "sccdbg" or to btext using
"btextdbg" on powermacs. I'll implement a cleaner way of forcing udbg
output to something else than the autodetected OF output device in a
later patch.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-01-09 14:49:54 +11:00

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C

/*
* Copyright (C) 1996 Paul Mackerras.
*
* 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.
*/
#include <asm/machdep.h>
#include <asm/udbg.h>
#include "nonstdio.h"
void xmon_map_scc(void)
{
}
int xmon_write(void *ptr, int nb)
{
return udbg_write(ptr, nb);
}
int xmon_readchar(void)
{
if (udbg_getc)
return udbg_getc();
return -1;
}
int xmon_read_poll(void)
{
if (udbg_getc_poll)
return udbg_getc_poll();
return -1;
}