| Commit message (Collapse) | Author | Age | Files | Lines |
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Once again, this time with feeling....
- Ted
>From c91cfaabc17f8a53807a2f31f067a732e34a1550 Mon Sep 17 00:00:00 2001
From: Theodore Ts'o <tytso@mit.edu>
Date: Wed, 12 Mar 2008 11:50:39 -0400
Subject: Export empty_zero_page
The empty_zero_page symbol is exported by most other architectures
(s390, ia64, x86, um), and an upcoming ext4 patch needs it because
ZERO_PAGE() references empty_zero_page, and we need it to zero out an
unitialized extents in ext4 files.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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A bogus test for unassigned resources that came from our 32-bit
PCI code ended up being "merged" by my previous patch series,
breaking some 64-bit setups where devices have legal resources
ending at 0xffffffff.
This fixes it by completely changing the test. We now test for
res->start == 0, as the generic code expects, and we also only
do so on platforms that don't have the PPC_PCI_PROBE_ONLY flag
set, as there are cases of pSeries and iSeries where it could
be a valid value and those can't reassign devices.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Some drivers (such as V4L2) have code that causes gcc to generate
calls to __ucmpdi2 when compiling for 32-bit powerpc, which results
in either a link-time error or a module that can't be loaded, as
we don't currently have a __ucmpdi2. This adds one so these drivers
can be used.
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This makes swap routines operate correctly on the ppc_8xx based machines.
Code has been revalidated on mpc885ads (8M sdram) with recent kernel. Based
on patch from Yuri Tikhonov <yur@emcraft.com> to do the same on arch/ppc
instance.
Recent kernel's size makes swap feature very important on low-memory platforms,
those are actually non-operable without it.
Signed-off-by: Yuri Tikhonov <yur@emcraft.com>
Signed-off-by: Vitaly Bordug <vitb@kernel.crashing.org>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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dt_mem_next_cell() currently does of_read_ulong(). This does not
allow for the case where #size-cells and/or #address-cells = 2 on a
32-bit system, as it will end up reading 32 bits instead of the
expected 64. Change it to use of_read_number instead and always
return a u64.
Signed-off-by: Becky Bruce <becky.bruce at freescale.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Fix sparse warnings in powerpc kprobes:
CHECK arch/powerpc/kernel/kprobes.c
arch/powerpc/kernel/kprobes.c:277:6: warning: symbol 'kretprobe_trampoline_holder' was not declared. Should it be static?
arch/powerpc/kernel/kprobes.c:287:15: warning: symbol 'trampoline_probe_handler' was not declared. Should it be static?
arch/powerpc/kernel/kprobes.c:525:16: warning: symbol 'jprobe_return_end' was not declared. Should it be static?
Fix along the same lines as http://lkml.org/lkml/2008/2/13/642
Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This fixes the following section mismatches:
<-- snip -->
...
WARNING: vmlinux.o(.text+0xe49c): Section mismatch in reference from the function .vdso_do_func_patch64() to the function .init.text:.find_symbol64()
WARNING: vmlinux.o(.text+0xe4d0): Section mismatch in reference from the function .vdso_do_func_patch64() to the function .init.text:.find_symbol64()
WARNING: vmlinux.o(.text+0xe56c): Section mismatch in reference from the function .vdso_do_func_patch32() to the function .init.text:.find_symbol32()
WARNING: vmlinux.o(.text+0xe5a0): Section mismatch in reference from the function .vdso_do_func_patch32() to the function .init.text:.find_symbol32()
...
<-- snip -->
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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vmlinux.lds and dtc-parser.tab.h get created but never cleaned up.
Signed-off-by: Paul Mackerras <paulus@samba.org>
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The powerpc show_regs prints CPU using smp_processor_id: change that to
raw_smp_processor_id, so that when it's showing a WARN_ON backtrace without
preemption disabled, DEBUG_PREEMPT doesn't mess up that warning with its own.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Commit ad7f71674ad7c3c4467e48f6ab9e85516dae2720 ("[POWERPC] Use a
sensible default for clock_getres() in the VDSO") corrected the clock
resolution reported by the VDSO clock_getres() but introduced another
problem in that older versions of gcc (gcc-4.0 and earlier) fail to
compile the new code in arch/powerpc/kernel/asm-offsets.c.
This fixes it by introducing a new MONOTONIC_RES_NSEC define in the
generic code which is equivalent to KTIME_MONOTONIC_RES but is just an
integer constant, not a ktime union.
Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'for-2.6.25' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (69 commits)
[POWERPC] Add SPE registers to core dumps
[POWERPC] Use regset code for compat PTRACE_*REGS* calls
[POWERPC] Use generic compat_sys_ptrace
[POWERPC] Use generic compat_ptrace_request
[POWERPC] Use generic ptrace peekdata/pokedata
[POWERPC] Use regset code for PTRACE_*REGS* requests
[POWERPC] Switch to generic compat_binfmt_elf code
[POWERPC] Switch to using user_regset-based core dumps
[POWERPC] Add user_regset compat support
[POWERPC] Add user_regset_view definitions
[POWERPC] Use user_regset accessors for GPRs
[POWERPC] ptrace accessors for special regs MSR and TRAP
[POWERPC] Use user_regset accessors for SPE regs
[POWERPC] Use user_regset accessors for altivec regs
[POWERPC] Use user_regset accessors for FP regs
[POWERPC] mpc52xx: fix compile error introduce when rebasing patch
[POWERPC] 4xx: PCIe indirect DCR spinlock fix.
[POWERPC] Add missing native dcr dcr_ind_lock spinlock
[POWERPC] 4xx: Fix offset value on Warp board
[POWERPC] 4xx: Add 440EPx Sequoia ehci dts entry
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This makes the SPE register data appear in ELF core dumps, using the
new n_type value NT_PPC_SPE (0x101). This new note type is not used
by any consumers of core files yet, but support can be added. I don't
even have any hardware with SPE capabilities, so I've never seen such
a note. But this demonstrates how simple it is to export register
information in core dumps when the user_regset style is used for the
low-level code.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This cleans up the 32-bit ptrace syscall support to use user_regset calls
to get at the register data for PTRACE_*REGS* calls.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This replaces powerpc's compat_sys_ptrace with a compat_arch_ptrace and
enables the new generic definition of compat_sys_ptrace instead.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This removes some duplicated code by calling the new generic
compat_ptrace_request from powerpc's compat_sys_ptrace.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Now that ptrace_request handles these, we can drop some more boilerplate.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This replaces all the code for powerpc PTRACE_*REGS* requests with
simple calls to copy_regset_from_user and copy_regset_to_user. All
the ptrace formats are either the whole corresponding user_regset
format (core dump format) or a leading subset of it, so we can get
rid of all the remaining embedded knowledge of both those layouts
and of the internal data structures they correspond to. Only the
user_regset accessors need to implement that.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This switches the CONFIG_PPC64 support for 32-bit ELF to use the
generic fs/compat_binfmt_elf.c implementation instead of our own
binfmt_elf32.c. Since so much is the same between 32/64, there is
only one macro we have to define to make the generic support work out
of the box.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This extends task_user_regset_view CONFIG_PPC64 with support for the
32-bit view of register state, compatible with what a CONFIG_PPC32
kernel provides. This will enable generic machine-independent code to
access user-mode threads' registers for debugging and dumping.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This provides the task_user_regset_view entry point and support for
all the native-mode (64 on CONFIG_PPC64, 32 on CONFIG_PPC32) thread
register state. This will enable generic machine-independent code to
access user-mode threads' registers for debugging and dumping.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This implements user_regset-style accessors for the powerpc general
registers. In the future these functions will be the only place that
needs to understand the user_regset layout (core dump format) and how
it maps to the internal representation of user thread state.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This isolates the ptrace code for the special-case registers msr and trap
from the ptrace-layout dispatch code. This should inline away completely.
It cleanly separates the low-level machine magic that has to be done for
deep reasons, from the superficial details of the ptrace interface.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This implements user_regset-style accessors for the powerpc SPE data,
and rewrites the existing ptrace code in terms of those calls.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This implements user_regset-style accessors for the powerpc Altivec data,
and rewrites the existing ptrace code in terms of those calls.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This implements user_regset-style accessors for the powerpc FPU data,
and rewrites the existing ptrace code in terms of those calls.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Looks like "[POWERPC] kdump shutdown hook support" broke builds when
CONFIG_DEBUGGER=n and CONFIG_KEXEC=y, such as in g5_defconfig:
arch/powerpc/kernel/crash.c: In function 'default_machine_crash_shutdown':
arch/powerpc/kernel/crash.c:388: error: '__debugger_fault_handler' undeclared (first use in this function)
arch/powerpc/kernel/crash.c:388: error: (Each undeclared identifier is reported only once
arch/powerpc/kernel/crash.c:388: error: for each function it appears in.)
Move the debugger hooks to under CONFIG_DEBUGGER || CONFIG_KEXEC, since
that's when the crash code is enabled.
(I should have caught this with my build-script pre-merge, my bad. :( )
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc into for-2.6.25
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The e300 c3 and c4 variants support hardware performance monitor counters
which are identical to those found in the e500.
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Some of the more recent e300 cores have the same performance monitor
implementation as the e500. e300 isn't book-e, so the name isn't
really appropriate. In preparation for e300 support, rename a bunch
of fsl_booke things to say fsl_emb (Freescale Embedded Performance Monitors).
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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The patch to legacy_serial.c (1a7507c7da2df6856e085e0fbb0c9ea8c12ac4e,
Reduce code duplication in legacy_serial, add UART parent types) changed
the semantics for opb ports from type = "opb" || compatible = "ibm,opb"
to type = "opb" && compatible = "ibm,opb".
The result is serial ports on our QS21s (Cell blades) don't get found,
and for some reason the machine doesn't boot at all - possibly it's
panicking due to lack of a console?
The fix is to add two entries to the of_device_id table, one that looks
for type = "opb" and the other compatible = "ibm,opb".
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This ensures that the syscall and the (fast) vdso versions of
clock_getres() will return the same resolution.
Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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WARNING: vmlinux.o(.text+0x3017c): Section mismatch in reference from the function .vio_create_viodasd() to the function .devinit.text:.vio_register_device_node()
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This moves the ability to scale cputime into generic code. This allows us
to fix the issue in kernel/timer.c (noticed by Balbir) where we could only
add an unscaled value to the scaled utime/stime.
This adds a cputime_to_scaled function. As before, the POWERPC version
does the scaling based on the last SPURR/PURR ratio calculated. The
generic and s390 (only other arch to implement asm/cputime.h) versions are
both NOPs.
Also moves the SPURR and PURR snapshots closer.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Cc: Jay Lan <jlan@engr.sgi.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Previously, during initialization of the IOMMU tables, the last entry
at each 4GB boundary is marked as used since there are many adapters
which cannot handle DMAing across any 4GB boundary.
The IOMMU doesn't allocate a memory area spanning LLD's segment
boundary anymore. The segment boundary of devices are set to 4GB by
default. So we can remove 4GB boundary protection now.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This patch converts PPC's IOMMU to use the IOMMU helper functions. The IOMMU
doesn't allocate a memory area spanning LLD's segment boundary anymore.
iseries_hv_alloc and iseries_hv_map don't have proper device
struct. 4GB boundary is used for them.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This patch makes iommu respect segment size limits when merging sg
lists.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Acked-by: Jens Axboe <jens.axboe@oracle.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6:
PPC: Fix powerpc vio_find_name to not use devices_subsys
Driver core: add bus_find_device_by_name function
Module: check to see if we have a built in module with the same name
x86: fix runtime error in arch/x86/kernel/cpu/mcheck/mce_amd_64.c
Driver core: Fix up build when CONFIG_BLOCK=N
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This fixes vio_find_name() in arch/powerpc/kernel/vio.c, which is
currently broken because it tries to use devices_subsys. That is bad
for two reasons: (1) it's doing (or trying to do) a scan of all
devices when it should only be scanning those on the vio bus, and
(2) devices_subsys was an internal symbol of the device system code
which was never meant for external use and has now gone away, and
thus the kernel fails to compile on pSeries.
The new version uses bus_find_device_by_name() on the vio bus
(vio_bus_type).
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This removes the handling for PTRACE_CONT et al from the powerpc
ptrace code, so it uses the new generic code via ptrace_request.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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This defines the new standard arch_has_single_step macro. It makes the
existing set_single_step and clear_single_step entry points global, and
renames them to the new standard names user_enable_single_step and
user_disable_single_step, respectively.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Remove the deprecated __attribute_used__.
[Introduce __section in a few places to silence checkpatch /sam]
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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This patch consolidate all definitions of .init.text, .init.data
and .exit.text, .exit.data section definitions in
the generic vmlinux.lds.h.
This is a preparational patch - alone it does not buy
us much good.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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Prune back Efika fixups to only include changes that are actually required
to get a working system. Most of the drivers can accept the compatible
properties, even if they don't match the what is recommented in the generic
names recommended practice document.
This patch also adds extra checks so that fixups are not performed blindly.
Instead, the code first verifies that the device tree is faulty before
making any changes. This way, if the Efika firmware is updated to fix
these issues, then the fixups will no longer get applied.
At this point; here is the list of fixups needed for the efika:
1. If the device_type property on the root node is 'chrp', then Linux won't
boot. Change device_type to 'efika' to avoid this condition
2. Add full interrupt list to the bestcomm node. In actual fact, the
bestcomm interrupts property is technically correct, it just doesn't
expose the same granularity as the device driver expects. All other
5200 device trees provide a separate irq number for each bestcomm
channel. Rather than hack the driver, it's simpler to fix it up
3. /builtin/sound node is missing an interrupts property
4. /builtin/ethernet node is missing a phy-handle property and the
device driver doesn't know what to do without one.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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All current 85xx/e500 implementations only have two TLB
arrays. We are wasting cycles by invalidating TLB2 and TLB3.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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The legacy_serial was treating each UART parent in a separate code block.
Rather than continue this trend for the new parent IDs, this condenses
all (soc, tsi, opb, plus two more new types) into one of_device_id array.
The new types are wrs,epld-localbus for the Wind River sbc8560, and a
more generic "simple-bus" as requested by Scott Wood.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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master.kernel.org:/pub/scm/linux/kernel/git/jwboyer/powerpc-4xx
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This adds the 440EP revision C PVR to the CPU table. The chip has an
FPU on it, so we also match the logical PVR
Signed-off-by: Sean MacLennan <smaclennan@pikatech.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
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This patch adds the 405EXr to the powerpc cuptable. Basically the 405EXr
is a 405EX with only one EMAC and only one PCIe interface.
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
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