linux-toradex.git/arch/s390/kernel/ipl.c, branch v2.6.32

[S390] smp: fix sigp stop handling

2009-10-29T14:05:13+00:00

According to the architecture a cpu must not necessarily enter stopped
state after completion of a sigp instruction with "stop" order code.
So remove the BUG() statement after self sending sigp stop to avoid
that it ever gets reached.
Also add a sigp busy check to make sure that the order gets delivered.

Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

[S390] kernel: Convert upper case scpdata to lower case

2009-09-11T08:29:46+00:00

If the CP SET LOADDEV on the 3215 console has been used to specify
SCPdata, all data is converted to upper case letters.

When scpdata contains upper case letters only, convert all letters
to lower case.

Signed-off-by: Hendrik Brueckner 
Signed-off-by: Martin Schwidefsky

[S390] kernel: Append scpdata to kernel boot command line

2009-09-11T08:29:46+00:00

Append scpdata to the kernel boot command line. If scpdata starts
with the equal sign (=), the kernel boot command line is replaced.
(For consistency with zIPL and IPL PARM parameters.)

To use scpdata for the kernel boot command line, scpdata must consist
of ascii characters only. If scpdata contains other characters,
scpdata is not appended to the kernel boot command line.
In addition, re-IPL is extended for setting scpdata for the next
Linux reboot.

Signed-off-by: Hendrik Brueckner 
Signed-off-by: Martin Schwidefsky

[S390] shutdown actions: save/return rc from init function

2009-07-07T14:37:52+00:00

We always returned -EINVAL when setting of a shutdown action failed. This was
misleading, if for example the hardware did not support the shutdown action.
Now we save each shutdown action's init return code and return it when the
action is being set.

Signed-off-by: Frank Munzert 
Signed-off-by: Martin Schwidefsky

[S390] ipl: fix compile breakage

2009-04-23T11:58:16+00:00

Fix this for !CONFIG_SMP:

arch/s390/kernel/ipl.c: In function 'stop_run':
arch/s390/kernel/ipl.c:1461: error: implicit declaration of function 'signal_processor'

Reported-by: Sachin Sant 
Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

[S390] remove duplicated #includes

2009-03-26T14:24:34+00:00

Remove duplicated #include's in arch/s390/kernel/ipl.c.

Signed-off-by: Huang Weiyi 
Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

[S390] Ensure that ipl panic notifier is called late.

2009-03-26T14:24:31+00:00

The s390 ipl panic notifier will stop the system or trigger a system dump.
This should be done as final action on the panic path. All other panic
notifiers should be executed before. Currently we use priority 0 for the ipl
notifier. In order to be called late, this patch changes the priority to
INT_MIN which is the lowest possible priority.

Signed-off-by: Michael Holzheu 
Signed-off-by: Martin Schwidefsky

[S390] ipl: Improve checking logic and remove switch defaults.

2009-03-26T14:24:30+00:00

A code analysis tool reported two warnings:
"The expression `ipl_info.type == IPL_TYPE_FCP' is true whenever evaluated."
and "Default is not possible". This patch improves the corresponding if
statement logic and removes the unnecessary switch defaults.

Signed-off-by:  Michael Holzheu 
Signed-off-by: Martin Schwidefsky

[S390] Use csum_partial in checksum.h

2009-03-26T14:24:27+00:00

The cksm function in system.h is duplicate to csum_partial in checksum.h.
Remove cksm and use csum_partial instead.

Signed-off-by: Frank Munzert 
Signed-off-by: Martin Schwidefsky

[S390] Automatic IPL after dump

2009-03-26T14:24:03+00:00

Provide new shutdown action "dump_reipl" for automatic ipl after dump.

Signed-off-by: Frank Munzert 
Signed-off-by: Martin Schwidefsky 
Signed-off-by: Heiko Carstens