Commit Graph

617 Commits

Author SHA1 Message Date
Vivek Goyal
57cac4d188 kdump: make elfcorehdr_addr independent of CONFIG_PROC_VMCORE
o elfcorehdr_addr is used by not only the code under CONFIG_PROC_VMCORE
  but also by the code which is not inside CONFIG_PROC_VMCORE.  For
  example, is_kdump_kernel() is used by powerpc code to determine if
  kernel is booting after a panic then use previous kernel's TCE table.
  So even if CONFIG_PROC_VMCORE is not set in second kernel, one should be
  able to correctly determine that we are booting after a panic and setup
  calgary iommu accordingly.

o So remove the assumption that elfcorehdr_addr is under
  CONFIG_PROC_VMCORE.

o Move definition of elfcorehdr_addr to arch dependent crash files.
  (Unfortunately crash dump does not have an arch independent file
  otherwise that would have been the best place).

o kexec.c is not the right place as one can Have CRASH_DUMP enabled in
  second kernel without KEXEC being enabled.

o I don't see sh setup code parsing the command line for
  elfcorehdr_addr.  I am wondering how does vmcore interface work on sh.
  Anyway, I am atleast defining elfcoredhr_addr so that compilation is not
  broken on sh.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Simon Horman <horms@verge.net.au>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-20 08:52:39 -07:00
Manfred Spraul
e545a6140b kernel/cpu.c: create a CPU_STARTING cpu_chain notifier
Right now, there is no notifier that is called on a new cpu, before the new
cpu begins processing interrupts/softirqs.
Various kernel function would need that notification, e.g. kvm works around
by calling smp_call_function_single(), rcu polls cpu_online_map.

The patch adds a CPU_STARTING notification. It also adds a helper function
that sends the message to all cpu_chain handlers.

Tested on x86-64.
All other archs are untested. Especially on sparc, I'm not sure if I got
it right.

Signed-off-by: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-09-08 19:25:24 +02:00
Paul Mundt
dbce1f649e sh64: resume_kernel fix for kernel oops built with CONFIG_BKL_PREEMPT=y.
Follows the SH change.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-05 14:51:28 +09:00
Carmelo Amoroso
323b8c410a sh: resume_kernel fix for kernel oops built with CONFIG_BKL_PREEMPT=y.
This patch fixes a problem within the SH implementation of resume_kernel code,
that implements in assembly the bulk of preempt_schedule_irq function without
taking care of the extra code needed to handle the BKL preemptible.

The patch basically consists of removing this asm code and calling the common
C implementation (see kernel/sched.c) as other archs do.

Another change is the missing 'cli' macro invocation at the beginning of
the resume_kernel.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-05 14:42:16 +09:00
Yoshihiro Shimoda
3c31bf7313 sh: fix semtimedop syscall
fix the problem that cannot work semtimedop system call.

Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-28 14:53:22 +09:00
Magnus Damm
5734493bac sh: fix kexec entry point for crash kernels
The crash kernel entry point is currently checked by the kexec kernel
code and only physical addresses in the reserved memory window are
accepted. This means that we can't pass P2 or P1 addresses as entry
points in the case of crash kernels. This patch makes sure we can start
crash kernels by adding support for physical address entry points.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-28 14:53:03 +09:00
Magnus Damm
34894c7843 sh: crash kernel resource fix
The reserved crash kernel memory range is currently missing from
/proc/iomem. crashk_res is mistakenly setup after __add_active_range().
Reorder things to make sure the resource shows up in /proc/iomem.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-28 14:52:58 +09:00
Adrian Bunk
e311be521f sh: fix ptrace_64.c:user_disable_single_step()
This patch fixes the following compile error caused by
commit c459dbf294
(sh: ptrace single stepping cleanups.):

<--  snip  -->

...
  CC      arch/sh/kernel/ptrace_64.o
arch/sh/kernel/ptrace_64.c: In function 'user_disable_single_step':
arch/sh/kernel/ptrace_64.c:134: error: 'regs' undeclared (first use in this function)
arch/sh/kernel/ptrace_64.c:134: error: (Each undeclared identifier is reported only once
arch/sh/kernel/ptrace_64.c:134: error: for each function it appears in.)
...
make[2]: *** [arch/sh/kernel/ptrace_64.o] Error 1

<--  snip  -->

Reported-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-25 14:08:02 +09:00
Magnus Damm
2a5323cd69 sh: export sh7723 VEU as VEU2H
Export sh7723 VEU hardware blocks as VEU2H. The sh7723 VEU2H differs
a bit from the sh7722 VEU so use different names for our UIO devices.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-11 20:17:55 +09:00
Yoshinori Sato
d09d328c11 sh: Don't export __{s,u}divsi3_i4i from SH-2 libgcc.
rsk7203_defconfig fails to build with the following error:

<--  snip  -->

...
  LD      .tmp_vmlinux1
arch/sh/kernel/built-in.o:(__ksymtab+0xb8): undefined reference to `__udivsi3_i4i'
arch/sh/kernel/built-in.o:(__ksymtab+0xc8): undefined reference to `__sdivsi3_i4i'
make[1]: *** [.tmp_vmlinux1] Error 1

<--  snip  -->

That worked with 2.6.26, and these are far less undefined references
than in the cases where libgcc was missing.

[ These symbols are not defined on SH-2 versions of libgcc, so we have to
  special case the export there. - Paul ]

Reported-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-11 20:17:49 +09:00
Paul Mundt
c3b4adfa65 sh: Save NUMA node data in vmcore for crash dumps.
Presently the NUMA node data isn't saved on kexec. This implements a
simple arch_crash_save_vmcoreinfo() for saving off the relevant data.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-04 13:42:49 +09:00
Paul Mundt
4b59c97325 sh: module_alloc() should be using vmalloc_exec().
SH-X2 extended mode TLB allows for toggling of the exec bit, so make
sure we are using the right protection bits for module space there
also.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-04 13:34:29 +09:00
Paul Mundt
3108cf0612 sh: Fix up __bug_table handling in module loader.
We should be calling in to the lib/bug.c module helpers, fix that up.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-04 13:32:04 +09:00
Paul Mundt
6a9545bd95 sh: Fix up broken kerneldoc comments.
These were completely unparseable, so fix them up.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-04 12:51:06 +09:00
Paul Mundt
9e5e21170e sh: Fix up the audit arch endian specification.
Presently this was always being set to AUDIT_ARCH_SH, which assumes
big endian. Fix this up so that the architecture actually reflects
what we're running on.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-02 04:39:33 +09:00
Paul Mundt
ab99c733ae sh: Make syscall tracer use tracehook notifiers, add TIF_NOTIFY_RESUME.
This follows the changes in commits:

7d6d637dac
4f72c4279e

on powerpc. Adding in TIF_NOTIFY_RESUME, and cleaning up the syscall
tracing to be more generic. This is an incremental step to turning
on tracehook, as well as unifying more of the ptrace and signal code
across the 32/64 split.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-02 04:39:33 +09:00
Paul Mundt
c459dbf294 sh: ptrace single stepping cleanups.
This converts the single stepping done by sh/sh64 ptrace implementations
to use the generic user_enable/disable_single_step(), and subsequently
rips out a lot of ptrace request cases that are now handled generically.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-02 04:39:33 +09:00
Paul Mundt
c4637d4751 sh: seccomp support.
This hooks up the seccomp thread flag and associated callback from the
syscall tracer.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-02 04:39:32 +09:00
Paul Mundt
cec3fd3e2a sh: Tidy up the _TIF work masks, and fix syscall trace bug on singlestep.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-02 04:39:32 +09:00
Simon Horman
daf423db3b kdump: sh: parse elfcorehdr command line argument
A quick cut and paste from other architectures to allow SH
to parse the elfcorehdr command line argument which is required
for both is_kdump_kernel() and vmcore to function.
(the former is as yet unused on SH).

Tested compilation only

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-02 04:39:32 +09:00
Paul Mundt
939a24a6df sh: Move out the solution engine headers to arch/sh/include/mach-se/
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-29 21:41:37 +09:00
Paul Mundt
b9edb17cc2 sh: Add an arch/sh/kernel/.gitignore
Ignore vmlinux.lds.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-29 08:29:32 +09:00
Paul Mundt
f15cbe6f1a sh: migrate to arch/sh/include/
This follows the sparc changes a439fe51a1.

Most of the moving about was done with Sam's directions at:

http://marc.info/?l=linux-sh&m=121724823706062&w=2

with subsequent hacking and fixups entirely my fault.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-29 08:09:44 +09:00
Paul Mundt
44f9598952 sh: Wire up new syscalls.
This wires up the signalfd4, eventfd2, epoll_create1, dup3, pipe2, and
inotify_init1 syscalls.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:34:45 +09:00
Stuart MENEFY
0b1689cfbb sh: Don't miss pending signals returning to user mode after signal processing
Without this patch, signals sent during architecture specific signal
handling (typically as a result of the user's stack being inaccessible)
are ignored.

This is the SH version of commit c3ff8ec31c
which was for the i386.

Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:37 +09:00
Magnus Damm
d7f1a9adc0 sh: Use clk_always_enable() on sh7366
Use clk_always_enable() in the sh7366 processor code.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:37 +09:00
Magnus Damm
8fa509ab91 sh: Use clk_always_enable() on sh7343 / SE77343
Use clk_always_enable() on the sh7343 processor and in the board code
for Solution Engine 7343. Remove duplicate MSTPCR register definitions.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:37 +09:00
Magnus Damm
6c7d826cf6 sh: Use clk_always_enable() on sh7722 / Migo-R / SE7722
Use clk_always_enable() on the sh7722 processor and in the board code
for Migo-R and Solution Engine 7722. Remove duplicate MSTPCR register
definitions.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:37 +09:00
Magnus Damm
9ca6ecac50 sh: Use clk_always_enable() on sh7723 / ap325rxa
Use clk_always_enable() on the sh7723 processor and in the ap325rxa
board code. Remove duplicate MSTPCR register definitions.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:37 +09:00
Magnus Damm
152fe36ebe sh: Show all clocks and their state in /proc/clocks
Show all clocks in /proc/clocks, and also show if they are enabled or
disabled. This is useful to show MSTPCR bits on SuperH Mobile processors.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:36 +09:00
Magnus Damm
1312994c80 sh: Merge sh7343 and sh7722 clock code
This code makes sh7343 share the sh7722 clock code. Instead of just using
the good and very old sh7343 clock implmentation, switch to the new MSTPCR
enabled clock code. SIU clocks are disabled on sh7343 for now.

With this change all SuperH Mobile devices now use the same clock code.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:36 +09:00
Magnus Damm
aea167cbb5 sh: Add SuperH Mobile MSTPCR bits to clock framework
Handle module stop clock bits in MSTPCRn through the clock framework.
The clocks are named after the bits in the data sheet. The association
between bit number and hardware block is processor specific.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:36 +09:00
Magnus Damm
3fec18bd60 sh: Use arch_flags to simplify sh7722 siu clock code
Make use of arch_flags to simplify the SIU clock code.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:36 +09:00
Magnus Damm
1eca5c9272 sh: Add memory chunks to SH-Mobile UIO devices
This patch adds physically contiguous memory chunks to the UIO devices.
The same strategy can be used in the future for the CEU as well.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:35 +09:00
Magnus Damm
714750dd5c sh: Export sh7366 VPU, VEU(1), VEU(2) using uio_pdrv_genirq
This patch exports the VPU, VEU(1) and VEU(2) blocks of the sh7366
to user space using the uio_pdrv_genirq platform driver.

While at it, fix up the VEU(2) interrupt vector.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:34 +09:00
Magnus Damm
6874548c69 sh: Export sh7723 VPU, VEU2H0, VEU2H1 using uio_pdrv_genirq
This patch exports the VPU, VEU2H0 and VEU2H1 blocks of the sh7723
to user space using the uio_pdrv_genirq platform driver.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:34 +09:00
Magnus Damm
a55f6d2567 sh: Export sh7722 VPU and VEU using uio_pdrv_genirq
This patch exports the VPU and VEU blocks of the sh7722 to user space
using the uio_pdrv_genirq platform driver.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:34 +09:00
Magnus Damm
c901c96cc2 sh: Export sh7343 VPU and VEU using uio_pdrv_genirq
This patch exports the VPU and VEU blocks of the sh7343 to user space
using the uio_pdrv_genirq platform driver.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:34 +09:00
Yoshinori Sato
6e80f5e8c4 sh2(A) exception handler update
This patch is

By sh2
- Remove duplicate code
- Reduce stack usage
- Cleanup and little optimize

By sh2a
- Add missing handler(256 to 511)
- Use sh2a instructions handler

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:34 +09:00
Yoshihiro Shimoda
a4e1d08491 sh: update sh7343 code
updated the following codes for SH7343:
 - add register_intc_controller()
 - add EARLY_SCIF_CONSOLE_PORT
 - add define of CPG register

Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:34 +09:00
Magnus Damm
0fff76f2da sh: add SuperH Mobile I2C platform data to sh7366
This patch adds platform data for the single I2C channel on sh7366.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:33 +09:00
Magnus Damm
da7d3029d1 sh: add SuperH Mobile I2C platform data to sh7723
This patch adds platform data for the single I2C channel on sh7723.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:33 +09:00
Magnus Damm
7549079d84 sh: add SuperH Mobile I2C platform data to sh7343
This patch adds platform data for two I2C channels to the sh7343.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:33 +09:00
Yoshihiro Shimoda
6bdfb22a8e sh: add interrupt ack code to sh4a
This patch is based on interrupt acknowledge code for external
interrupt sources on sh3 processors and adds on sh4a processors.

Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:33 +09:00
Stuart Menefy
f2fb4e4f64 sh: Conditionally re-enable IRQs in fault path.
The current kernel behaviour is to reenable interrupts unconditionally
when taking a page fault. This patch changes this to only enable them
if interrupts were previously enabled.

It also fixes a problem seen with this fix in place: the kernel previously
flushed the vsyscall page when handling a signal, which is not only
unncessary, but caused a possible sleep with interrupts disabled.

Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:33 +09:00
Paul Mundt
068f59143d sh: Record the major cut revision for probed SH-4A parts.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:32 +09:00
Chris Smith
09b5a10c19 sh: Optimized flush_icache_range() implementation.
Add implementation of flush_icache_range() suitable for signal handler
and kprobes. Remove flush_cache_sigtramp() and change signal.c to use
flush_icache_range().

Signed-off-by: Chris Smith <chris.smith@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:32 +09:00
Stuart Menefy
3611ee7acc sh: Stub in silicon cut in CPU info.
Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:32 +09:00
Paul Mundt
ef9247ef89 sh: Tidy up the SH-3 exception vector table.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:32 +09:00
Yoshinori Sato
d88a3ea6fa SH7619 add ethernet controler support
- Add EtherC + PHY resource define.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:32 +09:00