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[POWERPC] Register udbg console early on pseries LPAR

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On pseries LPAR we can call the udbg routines, and the udbg console very
early. So mark the udbg console as safe to call early in boot, and register
the udbg console as soon as the udbg routines are hooked up.

This allows platforms/pseries code to use printk() and pr_debug() rather
than needing to call udbg_printf() directly for early debugging. This is
nice because a) it's standard, b) it goes via the printk buffer, and c)
you can get printk time stamps.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Michael Ellerman 2008-04-24 15:13:17 +10:00 committed by Paul Mackerras
parent f336632f19
commit cb1e2ab45a
1 changed files with 2 additions and 0 deletions
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2
arch/powerpc/platforms/pseries/lpar.c
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@ -196,6 +196,8 @@ void __init udbg_init_debug_lpar(void)
udbg_putc = udbg_putcLP;
udbg_getc = udbg_getcLP;
udbg_getc_poll = udbg_getc_pollLP;
register_early_udbg_console();
}
/* returns 0 if couldn't find or use /chosen/stdout as console */