A defconfig file and the 10 lines of code (including comments ...) that
are rotting since lmo commit 6516a42dc8b40c6c00010346dd51496125b16644
don't quite make proper support, so let's trash it.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
When adding a property, the property name should be added to the string
table if it doesn't already exist. map_string() does that;
lookup_string() will fail instead.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Move the caller's pointer back to match the change in the region's start,
rather than alter a byte of the device tree's content.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
The ft_reorder() function may change the start of the region of interest,
so the pointer provided by the caller into that region must be fixed up
to still point to the same datum.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Currently, if ft_get_phandle() is passed NULL it will allocate an entry
for it and return a non-NULL phandle. This patch makes it simply pass
the NULL through.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This name better reflects what the function does, which is to
look up the phandle for an internal node pointer, and add it to the
internal pointer to phandle table if not found.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: Mark A. Greer <mgreer@mvista.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Clean up some of the open-coded data structure references by providing a
function to return a pointer to the tree's root node. This is only used
in high-level functions trying to access the root of the tree, not in
low-level code that is actually manipulating the data structure.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: Mark A. Greer <mgreer@mvista.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
ops.h references NULL, so include stddef.h, so files including ops.h
don't have to.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: Mark A. Greer <mgreer@mvista.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
72486f1f8f inverted the sense for
enabling hotplug CPU controls without reference to any other
architecture other than i386, ia64 and PowerPC. This left
everyone else without hotplug CPU control.
Fix ARM for this brain damage.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
These pte loops all assume the passed in address is HPAGE
aligned, make sure that is actually true.
Signed-off-by: David S. Miller <davem@davemloft.net>
sys_mbind
sys_get_mempolicy
sys_set_mempolicy
sys_kexec_load
sys_move_pages
sys_getcpu
sys_epoll_pwait
This work is largely a result of David Woodhouse's most
excellent missing syscalls patch.
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch re-organises the way the zImage wrapper code is entered, to
allow more flexibility on platforms with unusual entry conditions.
After this patch, a platform .o file has two options:
1) It can define a _zimage_start, in which case the platform code gets
control from the very beginning of execution. In this case the
platform code is responsible for relocating the zImage if necessary,
clearing the BSS, performing any platform specific initialization, and
finally calling start() to load and enter the kernel.
2) It can define platform_init(). In this case the generic crt0.S
handles initial entry, and calls platform_init() before calling
start(). The signature of platform_init() is changed, however, to
take up to 5 parameters (in r3..r7) as they come from the platform's
initial loader, instead of a fixed set of parameters based on OF's
usage.
When using the generic crt0.S, the platform .o can optionally
supply a custom stack to use, using the BSS_STACK() macro. If this
is not supplied, the crt0.S will assume that the loader has
supplied a usable stack.
In either case, the platform code communicates information to the
generic code (specifically, a PROM pointer for OF systems, and/or an
initrd image address supplied by the bootloader) via a global
structure "loader_info".
In addition the wrapper script is rearranged to ensure that the
platform .o is always linked first. This means that platforms where
the zImage entry point is at a fixed address or offset, rather than
being encoded in the binary header can be supported using option (1).
Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This patch rewrites prep_kernel() in the zImage wrapper code to be
clearer and more flexible. Notable changes:
- Handling of the initrd image from prep_kernel() has moved
into a new prep_initrd() function.
- The address of the initrd image is now added as device tree
properties, as the kernel expects.
- We only copy a packaged initrd image to a new location if it
is in danger of being clobbered when the kernel moves to its final
location, instead of always.
- By default we decompress the kernel directly to address 0,
instead of requiring it to relocate itself. Platforms (such as OF)
where doing this could clobber still-live firmware data structures can
override the vmlinux_alloc hook to provide an alternate place to
decompress the kernel.
- We no longer pass lots of information between functions in
global variables.
Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
At present, arch/powerpc/boot/main.c includes a gunzip() function
which is a convenient wrapper around zlib. However, it doesn't
conveniently allow decompressing part of an image to one location,
then the remainder to a different address.
This patch adds a new set of more flexible convenience wrappers around
zlib, moving them to their own file, gunzip_util.c, in the process.
These wrappers allow decompressing sections of the compressed image to
different locations. In addition, they transparently handle
uncompressed data, avoiding special case code to handle uncompressed
vmlinux images.
The patch also converts main.c to use the new wrappers, using the new
flexibility to avoid decompressing the vmlinux's ELF header twice as
we did previously. That in turn means we avoid extending our
allocations for the vmlinux to allow space for the extra copy of the
ELF header.
Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
* 'merge' of master.kernel.org:/pub/scm/linux/kernel/git/paulus/powerpc:
[POWERPC] sys_move_pages should be callable from an SPU
[POWERPC] Wire up sys_epoll_pwait
[POWERPC] Allocate syscall number for sys_getcpu
[POWERPC] update cell_defconfig
[POWERPC] ps3: always make sure were running on a PS3
[POWERPC] Fix spu SLB invalidations
[POWERPC] avoid SPU_ACTIVATE_NOWAKE optimization
[POWERPC] spufs: fix possible memory corruption is spufs_mem_write
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
[SPARC]: Fix TIF_USEDFPU flag atomicity
[SPARC64]: Fix atomicity of TIF update in flush_thread()
[BW2]: Fix section mismatch warnings.
[CG14]: Fix section mismatch warnings.
[SPARC]: We do not need OLD_GETRLIMIT.
VMI is broken under COMPAT_VDSO, as Xen and other non hardware assisted
hypervisors will be. I have been working on a fix for this which works
for older glibcs that panic when the new relocatable VDSO is used.
However, I believe at this time that the fix is going to be too radical
to consider at this stage in the release of 2.6.21. We don't expect
this config option to be turned on by vendors for new distributions, so
at this point we are willing to drop support for it when VMI is compiled
in, and work on a patch for 2.6.22 which more fully addresses the
problem.
Signed-off-by: Zachary Amsden <zach@vmware.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Only System PLL clock source is selectable by CSCR_SYSTEM_SEL
bit. MPU PLL is driven by 512*CLK32 for each case.
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The minimal bus clock prescaler should be kept at value
selected by the board / boot loader designer.
Switching frequency above startup limit could
lead to the external memory/devices misbehave.
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The code for performing the calculation was only in the SH-4 probe
path, move it out to the common path so the other parts get this
right too.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
When a SH7751R system includes a card that has wide range space
like a graphics card, the pci-pci bridge controller can't set the
correct address range.
For example, when *lower_limit is 0xfd000000 and bar_size is
0x4000000, in the following code at arch/sh/drivers/pci/pci-auto.c,
0x0 is set in bar_value.
pciauto_setup_bars()
{
...
bar_value = ((*lower_limit - 1) & ~(bar_size - 1)) + bar_size;
...
*lower_limit = bar_value + bar_size;
}
As a result, 0x4000000 is set in *lower_limit, but this value is wrong.
The following patch avoids this problem by checking the range of the
value and refusing to update the BAR if the calculated value ends up
being bogus.
Signed-off-by: Hideo Saito <saito@densan.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Fix atomicity of TIF update in flush_thread() for sparc64
Fixes correctly the race by using *_ti_thread_flag.
Race :
parent process executing :
sys_ptrace()
(lock_kernel())
(ptrace_get_task_struct(pid))
arch_ptrace()
ptrace_detach()
ptrace_disable(child);
clear_singlestep(child);
clear_tsk_thread_flag(child, TIF_SINGLESTEP);
(which clears the TIF_SINGLESTEP flag atomically from a different
process)
(put_task_struct(child))
(unlock_kernel())
And at the same time, in the child process :
sys_execve()
do_execve()
search_binary_handler()
load_elf_binary()
flush_old_exec()
flush_thread()
doing a non-atomic thread flag update
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add missing checks to PS3 specific drivers ps3av and sys-manager to verify that
we are actually running on a PS3 (pointed out by Arnd).
Correct existing checks in other subsystems/drivers to return -ENODEV instead
of zero.
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
The SPU code doesn't properly invalidate SPUs SLBs when necessary,
for example when changing a segment size from the hugetlbfs code. In
addition, it saves and restores the SLB content on context switches
which makes it harder to properly handle those invalidations.
This patch removes the saving & restoring for now, something more
efficient might be found later on. It also adds a spu_flush_all_slbs(mm)
that can be used by the core mm code to flush the SLBs of all SPEs that
are running a given mm at the time of the flush.
In order to do that, it adds a spinlock to the list of all SPEs and move
some bits & pieces from spufs to spu_base.c
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Due to a buggy unsigned comparison, it was possible to write
beyond the end of the local store file in spufs under some
circumstances.
This rewrites the buggy function to look more like
simple_copy_from_buffer.
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Cc: Ulrich Weigand <Ulrich.Weigand@de.ibm.com>
* 'merge' of master.kernel.org:/pub/scm/linux/kernel/git/paulus/powerpc:
[POWERPC] 85xx: Enable CONFIG_SERIAL_8250_SHARE_IRQ
[POWERPC] Select u-image as default image for Linkstation
[POWERPC] 83xx: Minor fixes for 834x_mds USB setup code
[POWERPC] Fix warning in powermac pci.c
[POWERPC] Fix warning in powermac feature.c
[POWERPC] Fix warning in prom_parse.c of_irq_map_oldworld()
[POWERPC] Celleb: bug fix caused by not casting pointer types
[POWERPC] Add missing newline in xmon help output
[POWERPC] No DEEPNAP on 970MP 1.0
o Fix build error.
o Handle error returns.
o Deal with signals received while sleeping.
o Don't allow to be selected when we're not building the directory with
the driver anyway.
o Coding style cleanups.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Remove fixed setting of ROOT_DEV for 7448HPC2 platforms.
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This will allow us to build without PCI easier.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
There are many adapters which can not handle DMAing acrosss any 4 GB
boundary. For instance the latest Emulex adapters.
This normally is not an issue as firmware gives us dma-windows under
4gigs. However, some of the new System-P boxes have dma-windows above
4gigs, and this present a problem.
I propose fixing it in the IOMMU allocation instead of making each
driver protect against it as it is more efficient, and won't require
changing every driver which has not considered this issue.
This patch checks to see if the mapping spans a 4 gig boundary, and if
it does, retries the allocation. It tries the next allocation at the
start of the crossed 4 gig boundary.
Signed-off-by: Jake Moilanen <moilanen@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
The #cpus property is unused and undocumented and is therefore
being removed.
Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
