| Commit message (Collapse) | Author | Age | Files | Lines |
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Now we treat any reparse point as a symbolic link and map it to a Unix
one that is not true in a common case due to many reparse point types
supported by SMB servers.
Distinguish reparse point types into two groups:
1) that can be accessed directly through a reparse point
(junctions, deduplicated files, NFS symlinks);
2) that need to be processed manually (Windows symbolic links, DFS);
and map only Windows symbolic links to Unix ones.
Cc: <stable@vger.kernel.org>
Acked-by: Jeff Layton <jlayton@redhat.com>
Reported-and-tested-by: Joao Correia <joaomiguelcorreia@gmail.com>
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Steve French <smfrench@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull perf/ftrace fix from Steven Rostedt:
"Dave Jones's trinity program was able to enable the function tracer
from a normal user account via the perf syscall "perf_event_open()".
When I was able to reproduce it with trinity, I was able to track down
exactly how it happened.
I discovered that the check for whether the function tracepoint should
be activated or not was using the "perf_paranoid_kernel()" check which
by default, lets the user continue. The user should not by default be
able to enable function tracing.
The fix is to use "perf_paranoid_tracepoint_raw()" which will not let
the user enable function tracing. This is a security fix as normal
users should never be allowed to enable the function tracer"
* tag 'ftrace-urgent-3.12-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
perf/ftrace: Fix paranoid level for enabling function tracer
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The current default perf paranoid level is "1" which has
"perf_paranoid_kernel()" return false, and giving any operations that
use it, access to normal users. Unfortunately, this includes function
tracing and normal users should not be allowed to enable function
tracing by default.
The proper level is defined at "-1" (full perf access), which
"perf_paranoid_tracepoint_raw()" will only give access to. Use that
check instead for enabling function tracing.
Reported-by: Dave Jones <davej@redhat.com>
Reported-by: Vince Weaver <vincent.weaver@maine.edu>
Tested-by: Vince Weaver <vincent.weaver@maine.edu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: stable@vger.kernel.org # 3.4+
CVE: CVE-2013-2930
Fixes: ced39002f5ea ("ftrace, perf: Add support to use function tracepoint in perf")
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Pull MIPS updates from Ralf Baechle:
- Some minor work bringing the Cobalt MIPS platforms in line with other
MIPS platforms
- Make vmlinux.32 and vmlinux.64 build messages less verbose
- Always register the R4k clocksource when selected, the clock source's
rating will decide if this or another clock source is actually going
to be used
- Drop support for the Cisco (formerly Scientific Atlanta) PowerTV
platform. There appears to be nobody left who cares and the USB
driver went stale while waiting for years to be merged
- Some cleanup of Loongson 2 related #ifdefery
- Various minor cleanups
- Major rework on all things related to tracing / ptrace on MIPS,
including switching the MIPS ELF core dumper to regsets, enabling the
entries for SIGSYS in struct siginfo for MIPS, enabling ftrace
syscall trace points
- Some more work to bring DECstation support code in line with other
more modern code
- Report the name of the detected CPU, not just its CP0 PrID value
- Some more BCM 47xx and atheros ath79xx work
- Support for compressed kernels using the XZ compression scheme
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (53 commits)
MIPS: remove duplicate define
MIPS: Random whitespace clean-ups
MIPS: traps: Reformat notify_die invocations to 80 columns.
MIPS: Print correct PC in trace dump after NMI exception
MIPS: kernel: cpu-probe: Report CPU id during probe
MIPS: Remove unused defines in piix4.h
MIPS: Get rid of hard-coded values for Malta PIIX4 fixups
MIPS: Always register R4K clock when selected
MIPS: Loongson: Get rid of Loongson 2 #ifdefery all over arch/mips.
MIPS: cacheops.h: Increase indentation by one tab.
MIPS: Remove bogus BUG_ON()
MIPS: PowerTV: Remove support code.
MIPS: ftrace: Add support for syscall tracepoints.
MIPS: ptrace: Switch syscall reporting to tracehook_report_syscall_entry().
MIPS: Move audit_arch() helper function to __syscall_get_arch().
MIPS: Enable HAVE_ARCH_TRACEHOOK.
MIPS: Switch ELF core dumper to use regsets.
MIPS: Implement task_user_regset_view.
MIPS: ptrace: Use tracehook helpers.
MIPS: O32 / 32-bit: Always copy 4 stack arguments.
...
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This patch removes a duplicate define from
arch/mips/boot/ecoff.h
Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/6081/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Another whitespace clean-up, this removes tabs from between sentences in
some comments.
Signed-off-by: Maciej W. Rozycki <macro@codesourcery.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6103/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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An NMI exception delivered from YAMON delivers the PC in ErrorPC
instead of EPC. It's also necessary to clear the Status.BEV
bit for the page fault exception handler to work properly.
[ralf@linux-mips: Let the assembler do the loading of the mask value rather
than the convoluted explicit %hi/%lo manual relocation sequence from the
original patch.]
Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6035/
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Markos Chandras <markos.chandras@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/6084/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6023/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The PIIX4_ICTLR* and PIIX4_OCW* defines are not used by any other files.
Remove them.
The only file (other than fixup-malta.c which includes piix4.h in patch #1)
containing "#include <asm/mips-boards/piix4.h>" is
arch/mips/mti-malta/malta-int.c whose first version is actually
"1da177e4c3:arch/mips/mips-boards/malta/malta_int.c". In that version, in
the function get_int(), things in piix4.h are used. But now malta-int.c no
longer needs those stuff.
Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Reviewed-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6032/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Make the code more readable by using defines.
Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Reviewed-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6031/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Always register the R4K clocksource when CONFIG_CSRC_R4K is selected,
regardless of selected support for other clocksources. The kernel will
select the best clocksource based on their ratings, making it safe to
register R4K unconditionally and use it as a fallback should the
kernel be run on a system where other selected clocksources are
inoperable.
Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6024/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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It was ugly.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Checking for n<0 && n>9 makes no sense because it can never
be true. Moreover, we can have up to 64 vectored interrupts
so BUG_ON(n>9) was wrong anyway.
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Acked-by: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5909/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Nobody seems to care about this platform anymore and my attempts to find
somebody willing to provide some tlc for PowerTV have failed so far.
So let's nuke the bloody thing.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/5910/
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Set ret just so __must_check is satisfied but don't use the variable for
anything yet.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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This enables /proc/<pid>/syscall and the ptrace PTRACE_GETREGSET and
PTRACE_SETREGSET operations.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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There are no users yet of task_user_regset_view. yet; users will be
implemented rsp activated in subsequent commits.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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This gets us rid of the hard to maintain table of the number of syscall
arguments and paves the way for further restructuring of the syscall
code.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The generic version is wrong for MIPS.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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These are a leftover of the IRIX compat code which was removed in
2957c9e61ee9c37e7ebf2c8acab03e073fe942fd (kernel.org) rsp.
b934da913f236bca00c41d9e386e980586000461 (lmo) [[MIPS] IRIX: Goodbye
and thanks for all the fish].
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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This is necessary because MIPS doesn't use HAVE_ARCH_SIGINFO_T for
historical reasons.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Allow usage of scratch register for current pgd even when
MIPS_PGD_C0_CONTEXT is not configured. MIPS_PGD_C0_CONTEXT is set
for 64r2 platforms to indicate availability of Xcontext for saving
cpuid, thus freeing Context to be used for saving PGD. This option
was also tied to using a scratch register for storing PGD.
This commit will allow usage of scratch register to store the current
pgd if one can be allocated for the platform, even when
MIPS_PGD_C0_CONTEXT is not set. The cpuid will be kept in the CP0
Context register in this case.
The code to store the current pgd for the TLB miss handler is now
generated in all cases. When scratch register is available, the PGD
is also stored in the scratch register.
Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Patchwork: https://patchwork.linux-mips.org/patch/5906/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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There is no reliable way to tell R4000/R4400 SC and MC variations apart,
however simple heuristic should give good results. Only the MC version
supports coherent caching so we can rely on such a mode having been set
for KSEG0 by the power-on firmware to reliably indicate an MC processor.
SC processors reportedly hang on coherent cached memory accesses and Linux
is linked to a cached load address so the firmware has to use the correct
caching mode to download the kernel image in a cached mode successfully.
OTOH if the firmware chooses to use either the non-coherent cached or the
uncached mode for KSEG0 on an MC processor, then the SC variant will be
reported, just as we currently do, so no regression here.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Jonas Gorski <jogo@openwrt.org>
Cc: MIPS Mailing List <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/5882/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5877/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Commit 7034228792cc561e79ff8600f02884bd4c80e287 [MIPS: Whitespace
cleanup.] did a lot of good and a little damage. Revert the damage.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5875/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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This change complements commits d0da7c002f7b2a93582187a9e3f73891a01d8ee4
[MIPS: DEC: Convert to new irq_chip functions] and
5359b938c088423a28c41499f183cd10824c1816 [MIPS: DECstation I/O ASIC DMA
interrupt handling fix] and implements automatic handling of the two
classes of DMA interrupts the I/O ASIC implements, informational and
errors.
Informational DMA interrupts do not stop the transfer and use the
`handle_edge_irq' handler that clears the request right away so that
another request may be recorded while the previous is being handled.
DMA error interrupts stop the transfer and require a corrective action
before DMA can be reenabled. Therefore they use the `handle_fasteoi_irq'
handler that only clears the request on the way out. Because MIPS
processor interrupt inputs, one of which the I/O ASIC's interrupt
controller is cascaded to, are level-triggered it is recommended that
error DMA interrupt action handlers are registered with the IRQF_ONESHOT
flag set so that they are run with the interrupt line masked.
This change removes the export of clear_ioasic_dma_irq that now does not
have to be called by device drivers to clear interrupts explicitly
anymore. Originally these interrupts were cleared in the .end handler of
the `irq_chip' structure, before it was removed.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5874/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The semantics stay the same - on Cavium Octeon the functions were dead
code (it overrides the MIPS DMA ops) - on other platforms they contained
no code at all.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5720/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org>
Cc: linux-mips <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/948/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org>
Cc: linux-mips <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/947/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Add support for the LZ4 compression scheme in the ZBOOT decompression
stub, in order to support it we need to:
- select the "lz4" compression tool to compress the vmlinux.bin
payload
- memcpy() is also required for decompress_unlz4.c so we share the
implementation between GZIP, XZ and now LZ4
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: blogic@openwrt.org
Cc: james.hogan@imgtec.com
Patchwork: https://patchwork.linux-mips.org/patch/5829/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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There is currently no corresponding ELF program header for the "text"
loadable segment which is confusing for some bootloader out there such
as CFE because it expects to find a program header matching the segment
it is trying to load. The Linux kernel ELF binary "vmlinux" has a
similar program header for the text segment so we just mimic this here
too.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: blogic@openwrt.org
Cc: james.hogan@imgtec.com
Patchwork: https://patchwork.linux-mips.org/patch/5827/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Add support for the XZ compression scheme in the ZBOOT decompression
stub, in order to support it we need to:
- select the "xzkern" compression tool to compress the vmlinux.bin
payload
- link with ashldi3.o for xz_dec_run() to work
- memcpy() is also required for decompress_unxz.c so we share the
implementation between GZIP and XZ
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: blogic@openwrt.org
Cc: james.hogan@imgtec.com
Patchwork: https://patchwork.linux-mips.org/patch/5818/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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When CONFIG_SYS_SUPPORTS_ZBOOT is not enabled, we will still try to
build the decompressor code in arch/mips/boot/compressed as a
dependency for producing the vmlinuz target and this will result in
the following build failure:
OBJCOPY arch/mips/boot/compressed/vmlinux.bin
arch/mips/boot/compressed/decompress.c: In function 'decompress_kernel':
arch/mips/boot/compressed/decompress.c:105:2: error: implicit
declaration of function 'decompress'
make[1]: *** [arch/mips/boot/compressed/decompress.o] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [vmlinuz] Error 2
This is a genuine build failure because we have no implementation for
the decompress() function body since no kernel compression method
defined in CONFIG_KERNEL_(GZIP,BZIP2...) has been enabled.
arch/mips/Makefile already guards the install target for the "vmlinuz"
binary with a proper ifdef CONFIG_SYS_SUPPORTS_ZBOOT, we now also do the
same if we attempt to do a "make vmlinuz" and show that
CONFIG_SYS_SUPPORTS_ZBOOT is not enabled.
[ralf@linux-mips.org: Cleanup the makefile rule as suggested by James
Hogan.]
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: blogic@openwrt.org
Cc: richard@nod.at
Patchwork: https://patchwork.linux-mips.org/patch/5817/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Currently when using an initrd on a MIPS system the start of the bootmem
region of memory is set to the larger of the end of the kernel bss region
(_end) or the end of the initrd. In a typical memory layout where the
initrd is at some address above the kernel image this means that the start
of the bootmem region will be the end of the initrd. But when we are done
processing/loading the initrd we have no way to reclaim the memory region
it occupied, and we lose a large chunk of now otherwise empty RAM from our
final running system.
The bootmem code is designed to allow this initrd to be reserved (and the
code in finalize_initrd() currently does this). When the initrd is finally
processed/loaded its reserved memory is freed.
Fix the setting of the start of the bootmem map to be the end of the kernel.
[ralf@linux-mips.org: fold in the fix of Ashok Kumar <ashoks@broadcom.com>.]
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1574/
Cc: Ashok Kumar <ashoks@broadcom.com>
Patchwork: https://patchwork.linux-mips.org/patch/5883/
Patchwork: https://patchwork.linux-mips.org/patch/6028/
Patchwork: https://patchwork.linux-mips.org/patch/6064/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Based on quiet_cmd_X and cmd_X, this patch quiets the building output of
vmlinux.32 and vmlinux.64.
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Sam Ravnborg <sam@ravnborg.org>
Patchwork: https://patchwork.linux-mips.org/patch/1766/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Panic() is going to add a \n itself and it's annoying if a panic message rolls
of the screen on a device with no scrollback.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Original patch by Jianguo Wu <wujianguo@huawei.com>.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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This patch converts the pci_load_of_ranges function to use the new common
of_pci_range_parser.
Signed-off-by: Andrew Murray <amurray@embedded-bits.co.uk>
Signed-off-by: Andrew Murray <Andrew.Murray@arm.com>
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Reviewed-by: Rob Herring <rob.herring@calxeda.com>
Reviewed-by: Grant Likely <grant.likely@secretlab.ca>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-mips@linux-mips.org
Cc: jason@lakedaemon.net
Patchwork: https://patchwork.linux-mips.org/patch/5625/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The Asus WL520GC and WL520GU are based on the BCM5354 and clocked at
200MHz, but they do not have a clkfreq nvram variable set to the
correct value. This adds a workaround for these devices.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5843/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Some BCM5354 SoCs are running at 200MHz, but it is not possible to read
the clock from a register like it is done on some other SoC in ssb and
bcma. These devices should have a clkfreq nvram configuration value set
to 200, read it and set the clock to the correct value.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5842/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The nvram contains some gpio configuration for boards. It is stored in
a gpio<number>=name format e.g.
gpio8=wps_button
gpio4=robo_reset
This patches adds a function to parse these entries, so other driver
can use it.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5841/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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