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MIPS: IP22/IP28 Disable early printk to fix boot problems on some systems. 

Some Debian users have reported that the kernel hangs early during boot on
some IP22 systems.  Thomas Bogendoerfer found that this is due to a "bad
interaction between CONFIG_EARLY_PRINTK and overwritten prom memory during
early boot".  Since there's no fix yet, disable CONFIG_EARLY_PRINTK for now.

Signed-off-by: Martin Michlmayr <tbm@cyrius.com>
Cc: linux-mips@linux-mips.org
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Dmitri Vorobiev <dmitri.vorobiev@gmail.com>
Patchwork: http://patchwork.linux-mips.org/patch/702/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Martin Michlmayr 2009-11-19 16:40:09 +00:00 committed by Ralf Baechle
parent 29e553631b
commit 2b5e63f6b8
1 changed files with 16 additions and 2 deletions
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18
arch/mips/Kconfig
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@ -358,7 +358,14 @@ config SGI_IP22
select SWAP_IO_SPACE
select SYS_HAS_CPU_R4X00
select SYS_HAS_CPU_R5000
select SYS_HAS_EARLY_PRINTK
#
# Disable EARLY_PRINTK for now since it leads to overwritten prom
# memory during early boot on some machines.
#
# See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
# for a more details discussion
#
# select SYS_HAS_EARLY_PRINTK
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_64BIT_KERNEL
select SYS_SUPPORTS_BIG_ENDIAN
@ -410,7 +417,14 @@ config SGI_IP28
select SGI_HAS_ZILOG
select SWAP_IO_SPACE
select SYS_HAS_CPU_R10000
select SYS_HAS_EARLY_PRINTK
#
# Disable EARLY_PRINTK for now since it leads to overwritten prom
# memory during early boot on some machines.
#
# See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
# for a more details discussion
#
# select SYS_HAS_EARLY_PRINTK
select SYS_SUPPORTS_64BIT_KERNEL
select SYS_SUPPORTS_BIG_ENDIAN
help