2007-06-13 00:30:17 +08:00
|
|
|
source "arch/powerpc/platforms/Kconfig.cputype"
|
2007-03-19 18:53:53 +08:00
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|
|
2005-09-26 14:04:21 +08:00
|
|
|
config PPC32
|
|
|
|
|
bool
|
|
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|
|
default y if !PPC64
|
|
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|
|
2010-10-22 08:17:55 +08:00
|
|
|
config 32BIT
|
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|
|
|
bool
|
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|
|
default y if PPC32
|
|
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|
2005-09-26 14:04:21 +08:00
|
|
|
config 64BIT
|
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|
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|
bool
|
|
|
|
|
default y if PPC64
|
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|
2007-09-21 08:16:20 +08:00
|
|
|
config WORD_SIZE
|
|
|
|
|
int
|
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|
|
default 64 if PPC64
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|
default 32 if !PPC64
|
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|
2008-09-11 16:31:45 +08:00
|
|
|
config ARCH_PHYS_ADDR_T_64BIT
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|
def_bool PPC64 || PHYS_64BIT
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|
2010-10-01 19:12:54 +08:00
|
|
|
config ARCH_DMA_ADDR_T_64BIT
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|
|
def_bool ARCH_PHYS_ADDR_T_64BIT
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|
2005-09-26 14:04:21 +08:00
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|
|
config MMU
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|
|
bool
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|
default y
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|
2009-08-14 14:00:53 +08:00
|
|
|
config HAVE_SETUP_PER_CPU_AREA
|
2009-03-30 18:07:44 +08:00
|
|
|
def_bool PPC64
|
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|
|
|
|
2009-08-14 14:00:53 +08:00
|
|
|
config NEED_PER_CPU_EMBED_FIRST_CHUNK
|
2008-01-30 20:32:51 +08:00
|
|
|
def_bool PPC64
|
|
|
|
|
|
2009-10-14 03:44:44 +08:00
|
|
|
config NR_IRQS
|
|
|
|
|
int "Number of virtual interrupt numbers"
|
2010-01-31 09:14:03 +08:00
|
|
|
range 32 32768
|
2009-10-14 03:44:44 +08:00
|
|
|
default "512"
|
|
|
|
|
help
|
|
|
|
|
This defines the number of virtual interrupt numbers the kernel
|
|
|
|
|
can manage. Virtual interrupt numbers are what you see in
|
|
|
|
|
/proc/interrupts. If you configure your system to have too few,
|
|
|
|
|
drivers will fail to load or worse - handle with care.
|
|
|
|
|
|
2008-04-17 12:35:00 +08:00
|
|
|
config STACKTRACE_SUPPORT
|
|
|
|
|
bool
|
|
|
|
|
default y
|
|
|
|
|
|
2008-04-17 12:35:01 +08:00
|
|
|
config TRACE_IRQFLAGS_SUPPORT
|
|
|
|
|
bool
|
|
|
|
|
default y
|
|
|
|
|
|
|
|
|
|
config LOCKDEP_SUPPORT
|
|
|
|
|
bool
|
|
|
|
|
default y
|
|
|
|
|
|
2005-09-26 14:04:21 +08:00
|
|
|
config RWSEM_GENERIC_SPINLOCK
|
|
|
|
|
bool
|
|
|
|
|
|
|
|
|
|
config RWSEM_XCHGADD_ALGORITHM
|
|
|
|
|
bool
|
|
|
|
|
default y
|
|
|
|
|
|
2008-01-30 20:31:20 +08:00
|
|
|
config GENERIC_LOCKBREAK
|
|
|
|
|
bool
|
|
|
|
|
default y
|
|
|
|
|
depends on SMP && PREEMPT
|
|
|
|
|
|
2006-12-08 18:37:49 +08:00
|
|
|
config ARCH_HAS_ILOG2_U32
|
|
|
|
|
bool
|
2006-12-08 18:37:53 +08:00
|
|
|
default y
|
2006-12-08 18:37:49 +08:00
|
|
|
|
|
|
|
|
config ARCH_HAS_ILOG2_U64
|
|
|
|
|
bool
|
2006-12-08 18:37:53 +08:00
|
|
|
default y if 64BIT
|
2006-12-08 18:37:49 +08:00
|
|
|
|
2006-03-26 17:39:33 +08:00
|
|
|
config GENERIC_HWEIGHT
|
|
|
|
|
bool
|
|
|
|
|
default y
|
|
|
|
|
|
2015-06-24 13:25:31 +08:00
|
|
|
config ARCH_HAS_DMA_SET_COHERENT_MASK
|
|
|
|
|
bool
|
|
|
|
|
|
2005-09-26 14:04:21 +08:00
|
|
|
config PPC
|
|
|
|
|
bool
|
|
|
|
|
default y
|
2013-10-08 10:15:32 +08:00
|
|
|
select ARCH_MIGHT_HAVE_PC_PARPORT
|
2014-01-02 03:32:26 +08:00
|
|
|
select ARCH_MIGHT_HAVE_PC_SERIO
|
2013-03-07 02:11:51 +08:00
|
|
|
select BINFMT_ELF
|
2015-04-15 06:48:00 +08:00
|
|
|
select ARCH_HAS_ELF_RANDOMIZE
|
2010-06-29 10:43:34 +08:00
|
|
|
select OF
|
2010-11-19 07:54:56 +08:00
|
|
|
select OF_EARLY_FLATTREE
|
2014-02-28 21:42:56 +08:00
|
|
|
select OF_RESERVED_MEM
|
2009-01-07 02:49:17 +08:00
|
|
|
select HAVE_FTRACE_MCOUNT_RECORD
|
|
|
|
|
select HAVE_DYNAMIC_FTRACE
|
2016-03-03 12:27:00 +08:00
|
|
|
select HAVE_DYNAMIC_FTRACE_WITH_REGS if MPROFILE_KERNEL
|
2008-10-07 07:06:12 +08:00
|
|
|
select HAVE_FUNCTION_TRACER
|
2009-02-12 09:06:43 +08:00
|
|
|
select HAVE_FUNCTION_GRAPH_TRACER
|
2012-10-09 07:28:16 +08:00
|
|
|
select SYSCTL_EXCEPTION_TRACE
|
2008-07-25 16:46:11 +08:00
|
|
|
select ARCH_WANT_OPTIONAL_GPIOLIB
|
2013-03-07 12:48:16 +08:00
|
|
|
select VIRT_TO_BUS if !PPC64
|
2008-02-09 17:46:40 +08:00
|
|
|
select HAVE_IDE
|
2008-07-24 12:27:08 +08:00
|
|
|
select HAVE_IOREMAP_PROT
|
2013-09-23 10:05:12 +08:00
|
|
|
select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN
|
2008-02-03 04:10:35 +08:00
|
|
|
select HAVE_KPROBES
|
2008-07-24 00:30:15 +08:00
|
|
|
select HAVE_ARCH_KGDB
|
2008-03-05 06:28:37 +08:00
|
|
|
select HAVE_KRETPROBES
|
2008-07-27 14:53:20 +08:00
|
|
|
select HAVE_ARCH_TRACEHOOK
|
2010-07-12 12:36:09 +08:00
|
|
|
select HAVE_MEMBLOCK
|
2011-12-09 02:22:08 +08:00
|
|
|
select HAVE_MEMBLOCK_NODE_MAP
|
2009-08-05 03:08:28 +08:00
|
|
|
select HAVE_DMA_API_DEBUG
|
2008-05-15 11:49:44 +08:00
|
|
|
select HAVE_OPROFILE
|
2012-10-09 07:28:11 +08:00
|
|
|
select HAVE_DEBUG_KMEMLEAK
|
2014-08-09 05:23:25 +08:00
|
|
|
select ARCH_HAS_SG_CHAIN
|
2009-06-13 05:10:41 +08:00
|
|
|
select GENERIC_ATOMIC64 if PPC32
|
2012-07-31 05:41:09 +08:00
|
|
|
select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
|
perf: Do the big rename: Performance Counters -> Performance Events
Bye-bye Performance Counters, welcome Performance Events!
In the past few months the perfcounters subsystem has grown out its
initial role of counting hardware events, and has become (and is
becoming) a much broader generic event enumeration, reporting, logging,
monitoring, analysis facility.
Naming its core object 'perf_counter' and naming the subsystem
'perfcounters' has become more and more of a misnomer. With pending
code like hw-breakpoints support the 'counter' name is less and
less appropriate.
All in one, we've decided to rename the subsystem to 'performance
events' and to propagate this rename through all fields, variables
and API names. (in an ABI compatible fashion)
The word 'event' is also a bit shorter than 'counter' - which makes
it slightly more convenient to write/handle as well.
Thanks goes to Stephane Eranian who first observed this misnomer and
suggested a rename.
User-space tooling and ABI compatibility is not affected - this patch
should be function-invariant. (Also, defconfigs were not touched to
keep the size down.)
This patch has been generated via the following script:
FILES=$(find * -type f | grep -vE 'oprofile|[^K]config')
sed -i \
-e 's/PERF_EVENT_/PERF_RECORD_/g' \
-e 's/PERF_COUNTER/PERF_EVENT/g' \
-e 's/perf_counter/perf_event/g' \
-e 's/nb_counters/nb_events/g' \
-e 's/swcounter/swevent/g' \
-e 's/tpcounter_event/tp_event/g' \
$FILES
for N in $(find . -name perf_counter.[ch]); do
M=$(echo $N | sed 's/perf_counter/perf_event/g')
mv $N $M
done
FILES=$(find . -name perf_event.*)
sed -i \
-e 's/COUNTER_MASK/REG_MASK/g' \
-e 's/COUNTER/EVENT/g' \
-e 's/\<event\>/event_id/g' \
-e 's/counter/event/g' \
-e 's/Counter/Event/g' \
$FILES
... to keep it as correct as possible. This script can also be
used by anyone who has pending perfcounters patches - it converts
a Linux kernel tree over to the new naming. We tried to time this
change to the point in time where the amount of pending patches
is the smallest: the end of the merge window.
Namespace clashes were fixed up in a preparatory patch - and some
stylistic fallout will be fixed up in a subsequent patch.
( NOTE: 'counters' are still the proper terminology when we deal
with hardware registers - and these sed scripts are a bit
over-eager in renaming them. I've undone some of that, but
in case there's something left where 'counter' would be
better than 'event' we can undo that on an individual basis
instead of touching an otherwise nicely automated patch. )
Suggested-by: Stephane Eranian <eranian@google.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Paul Mackerras <paulus@samba.org>
Reviewed-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: <linux-arch@vger.kernel.org>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-21 18:02:48 +08:00
|
|
|
select HAVE_PERF_EVENTS
|
2016-02-20 13:02:46 +08:00
|
|
|
select HAVE_PERF_REGS
|
2016-04-28 17:31:08 +08:00
|
|
|
select HAVE_PERF_USER_STACK_DUMP
|
2010-04-07 16:10:20 +08:00
|
|
|
select HAVE_REGS_AND_STACK_ACCESS_API
|
2010-06-15 14:05:19 +08:00
|
|
|
select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
|
2012-07-31 05:42:46 +08:00
|
|
|
select ARCH_WANT_IPC_PARSE_VERSION
|
2012-01-30 16:02:19 +08:00
|
|
|
select SPARSE_IRQ
|
2012-02-16 16:37:49 +08:00
|
|
|
select IRQ_DOMAIN
|
2011-03-26 00:04:59 +08:00
|
|
|
select GENERIC_IRQ_SHOW
|
|
|
|
|
select GENERIC_IRQ_SHOW_LEVEL
|
2011-10-05 10:30:51 +08:00
|
|
|
select IRQ_FORCED_THREADING
|
2011-05-25 08:12:00 +08:00
|
|
|
select HAVE_RCU_TABLE_FREE if SMP
|
2011-02-03 01:27:24 +08:00
|
|
|
select HAVE_SYSCALL_TRACEPOINTS
|
2016-05-14 01:08:28 +08:00
|
|
|
select HAVE_CBPF_JIT
|
2011-06-30 03:16:59 +08:00
|
|
|
select HAVE_ARCH_JUMP_LABEL
|
2011-07-13 13:14:22 +08:00
|
|
|
select ARCH_HAVE_NMI_SAFE_CMPXCHG
|
2014-12-13 08:57:44 +08:00
|
|
|
select ARCH_HAS_GCOV_PROFILE_ALL
|
2012-04-20 21:05:48 +08:00
|
|
|
select GENERIC_SMP_IDLE_THREAD
|
2012-05-19 00:45:51 +08:00
|
|
|
select GENERIC_CMOS_UPDATE
|
2012-09-05 03:34:21 +08:00
|
|
|
select GENERIC_TIME_VSYSCALL_OLD
|
2012-05-19 00:45:51 +08:00
|
|
|
select GENERIC_CLOCKEVENTS
|
2014-02-26 08:09:06 +08:00
|
|
|
select GENERIC_CLOCKEVENTS_BROADCAST if SMP
|
|
|
|
|
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
|
2012-05-28 11:03:47 +08:00
|
|
|
select GENERIC_STRNCPY_FROM_USER
|
|
|
|
|
select GENERIC_STRNLEN_USER
|
2012-09-28 13:01:03 +08:00
|
|
|
select HAVE_MOD_ARCH_SPECIFIC
|
|
|
|
|
select MODULES_USE_ELF_RELA
|
2012-10-27 11:08:25 +08:00
|
|
|
select CLONE_BACKWARDS
|
2012-12-19 23:14:17 +08:00
|
|
|
select ARCH_USE_BUILTIN_BSWAP
|
2012-12-26 05:23:09 +08:00
|
|
|
select OLD_SIGSUSPEND
|
2012-12-26 08:27:42 +08:00
|
|
|
select OLD_SIGACTION if PPC32
|
2013-07-02 04:04:42 +08:00
|
|
|
select HAVE_DEBUG_STACKOVERFLOW
|
2013-09-24 23:18:36 +08:00
|
|
|
select HAVE_IRQ_EXIT_ON_IRQ_STACK
|
2014-01-15 15:14:28 +08:00
|
|
|
select ARCH_USE_CMPXCHG_LOCKREF if PPC64
|
2014-02-25 17:16:24 +08:00
|
|
|
select HAVE_ARCH_AUDITSYSCALL
|
2014-06-07 01:53:16 +08:00
|
|
|
select ARCH_SUPPORTS_ATOMIC_RMW
|
2014-09-19 07:40:21 +08:00
|
|
|
select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN
|
2014-09-17 20:15:33 +08:00
|
|
|
select NO_BOOTMEM
|
2014-11-06 00:27:41 +08:00
|
|
|
select HAVE_GENERIC_RCU_GUP
|
2015-04-09 10:52:56 +08:00
|
|
|
select HAVE_PERF_EVENTS_NMI if PPC64
|
2016-05-21 08:00:33 +08:00
|
|
|
select HAVE_NMI if PERF_EVENTS
|
2015-05-22 01:59:31 +08:00
|
|
|
select EDAC_SUPPORT
|
|
|
|
|
select EDAC_ATOMIC_SCRUB
|
2015-06-24 13:25:31 +08:00
|
|
|
select ARCH_HAS_DMA_SET_COHERENT_MASK
|
2015-11-20 10:19:29 +08:00
|
|
|
select ARCH_HAS_DEVMEM_IS_ALLOWED
|
powerpc/kernel: Enable seccomp filter
This commit enables seccomp filter on powerpc, now that we have all the
necessary pieces in place.
To support seccomp's desire to modify the syscall return value under
some circumstances, we use a different ABI to the ptrace ABI. That is we
use r3 as the syscall return value, and orig_gpr3 is the first syscall
parameter.
This means the seccomp code, or a ptracer via SECCOMP_RET_TRACE, will
see -ENOSYS preloaded in r3. This is identical to the behaviour on x86,
and allows seccomp or the ptracer to either leave the -ENOSYS or change
it to something else, as well as rejecting or not the syscall by
modifying r0.
If seccomp does not reject the syscall, we restore the register state to
match what ptrace and audit expect, ie. r3 is the first syscall
parameter again. We do this restore using orig_gpr3, which may have been
modified by seccomp, which allows seccomp to modify the first syscall
paramater and allow the syscall to proceed.
We need to #ifdef the the additional handling of r3 for seccomp, so move
it all out of line.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Kees Cook <keescook@chromium.org>
2015-07-23 18:21:09 +08:00
|
|
|
select HAVE_ARCH_SECCOMP_FILTER
|
2016-01-21 07:00:58 +08:00
|
|
|
select ARCH_HAS_UBSAN_SANITIZE_ALL
|
2016-03-18 05:20:19 +08:00
|
|
|
select ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT
|
powerpc/livepatch: Add live patching support on ppc64le
Add the kconfig logic & assembly support for handling live patched
functions. This depends on DYNAMIC_FTRACE_WITH_REGS, which in turn
depends on the new -mprofile-kernel ftrace ABI, which is only supported
currently on ppc64le.
Live patching is handled by a special ftrace handler. This means it runs
from ftrace_caller(). The live patch handler modifies the NIP so as to
redirect the return from ftrace_caller() to the new patched function.
However there is one particularly tricky case we need to handle.
If a function A calls another function B, and it is known at link time
that they share the same TOC, then A will not save or restore its TOC,
and will call the local entry point of B.
When we live patch B, we replace it with a new function C, which may
not have the same TOC as A. At live patch time it's too late to modify A
to do the TOC save/restore, so the live patching code must interpose
itself between A and C, and do the TOC save/restore that A omitted.
An additionaly complication is that the livepatch code can not create a
stack frame in order to save the TOC. That is because if C takes > 8
arguments, or is varargs, A will have written the arguments for C in
A's stack frame.
To solve this, we introduce a "livepatch stack" which grows upward from
the base of the regular stack, and is used to store the TOC & LR when
calling a live patched function.
When the patched function returns, we retrieve the real LR & TOC from
the livepatch stack, restore them, and pop the livepatch "stack frame".
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Torsten Duwe <duwe@suse.de>
Reviewed-by: Balbir Singh <bsingharora@gmail.com>
2016-03-24 19:04:05 +08:00
|
|
|
select HAVE_LIVEPATCH if HAVE_DYNAMIC_FTRACE_WITH_REGS
|
2005-09-26 14:04:21 +08:00
|
|
|
|
2013-09-23 10:04:51 +08:00
|
|
|
config GENERIC_CSUM
|
|
|
|
|
def_bool CPU_LITTLE_ENDIAN
|
|
|
|
|
|
2005-09-26 14:04:21 +08:00
|
|
|
config EARLY_PRINTK
|
|
|
|
|
bool
|
2005-11-23 14:57:25 +08:00
|
|
|
default y
|
2005-09-26 14:04:21 +08:00
|
|
|
|
2013-11-26 07:23:11 +08:00
|
|
|
config PANIC_TIMEOUT
|
|
|
|
|
int
|
|
|
|
|
default 180
|
|
|
|
|
|
2005-09-26 14:04:21 +08:00
|
|
|
config COMPAT
|
|
|
|
|
bool
|
|
|
|
|
default y if PPC64
|
2008-01-03 09:03:11 +08:00
|
|
|
select COMPAT_BINFMT_ELF
|
[PATCH v3] ipc: provide generic compat versions of IPC syscalls
When using the "compat" APIs, architectures will generally want to
be able to make direct syscalls to msgsnd(), shmctl(), etc., and
in the kernel we would want them to be handled directly by
compat_sys_xxx() functions, as is true for other compat syscalls.
However, for historical reasons, several of the existing compat IPC
syscalls do not do this. semctl() expects a pointer to the fourth
argument, instead of the fourth argument itself. msgsnd(), msgrcv()
and shmat() expect arguments in different order.
This change adds an ARCH_WANT_OLD_COMPAT_IPC config option that can be
set to preserve this behavior for ports that use it (x86, sparc, powerpc,
s390, and mips). No actual semantics are changed for those architectures,
and there is only a minimal amount of code refactoring in ipc/compat.c.
Newer architectures like tile (and perhaps future architectures such
as arm64 and unicore64) should not select this option, and thus can
avoid having any IPC-specific code at all in their architecture-specific
compat layer. In the same vein, if this option is not selected, IPC_64
mode is assumed, since that's what the <asm-generic> headers expect.
The workaround code in "tile" for msgsnd() and msgrcv() is removed
with this change; it also fixes the bug that shmat() and semctl() were
not being properly handled.
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2012-03-16 01:13:38 +08:00
|
|
|
select ARCH_WANT_OLD_COMPAT_IPC
|
2012-12-26 08:27:42 +08:00
|
|
|
select COMPAT_OLD_SIGACTION
|
2005-09-26 14:04:21 +08:00
|
|
|
|
|
|
|
|
config SYSVIPC_COMPAT
|
|
|
|
|
bool
|
|
|
|
|
depends on COMPAT && SYSVIPC
|
|
|
|
|
default y
|
|
|
|
|
|
|
|
|
|
# All PPC32s use generic nvram driver through ppc_md
|
|
|
|
|
config GENERIC_NVRAM
|
|
|
|
|
bool
|
|
|
|
|
default y if PPC32
|
|
|
|
|
|
2008-11-11 16:05:16 +08:00
|
|
|
config SCHED_OMIT_FRAME_POINTER
|
2005-09-26 14:04:21 +08:00
|
|
|
bool
|
|
|
|
|
default y
|
|
|
|
|
|
|
|
|
|
config ARCH_MAY_HAVE_PC_FDC
|
|
|
|
|
bool
|
2014-08-19 05:13:41 +08:00
|
|
|
default PCI
|
2005-09-26 14:04:21 +08:00
|
|
|
|
2006-01-11 11:43:56 +08:00
|
|
|
config PPC_UDBG_16550
|
|
|
|
|
bool
|
|
|
|
|
default n
|
|
|
|
|
|
|
|
|
|
config GENERIC_TBSYNC
|
|
|
|
|
bool
|
|
|
|
|
default y if PPC32 && SMP
|
|
|
|
|
default n
|
|
|
|
|
|
2006-09-12 15:04:40 +08:00
|
|
|
config AUDIT_ARCH
|
|
|
|
|
bool
|
|
|
|
|
default y
|
|
|
|
|
|
2006-12-08 19:30:41 +08:00
|
|
|
config GENERIC_BUG
|
|
|
|
|
bool
|
|
|
|
|
default y
|
|
|
|
|
depends on BUG
|
|
|
|
|
|
2007-03-20 02:18:02 +08:00
|
|
|
config SYS_SUPPORTS_APM_EMULATION
|
2007-05-23 22:51:46 +08:00
|
|
|
default y if PMAC_APM_EMU
|
2007-03-20 02:18:02 +08:00
|
|
|
bool
|
|
|
|
|
|
2011-04-15 02:29:16 +08:00
|
|
|
config EPAPR_BOOT
|
|
|
|
|
bool
|
|
|
|
|
help
|
|
|
|
|
Used to allow a board to specify it wants an ePAPR compliant wrapper.
|
|
|
|
|
default n
|
|
|
|
|
|
2006-01-17 00:53:22 +08:00
|
|
|
config DEFAULT_UIMAGE
|
|
|
|
|
bool
|
|
|
|
|
help
|
|
|
|
|
Used to allow a board to specify it wants a uImage built by default
|
|
|
|
|
default n
|
|
|
|
|
|
2007-12-08 09:12:39 +08:00
|
|
|
config ARCH_HIBERNATION_POSSIBLE
|
|
|
|
|
bool
|
2007-05-03 20:31:38 +08:00
|
|
|
default y
|
|
|
|
|
|
2007-12-08 09:14:00 +08:00
|
|
|
config ARCH_SUSPEND_POSSIBLE
|
|
|
|
|
def_bool y
|
2009-09-16 05:43:57 +08:00
|
|
|
depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
|
2012-07-20 20:42:36 +08:00
|
|
|
(PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
|
|
|
|
|
|| 44x || 40x
|
2007-12-08 09:14:00 +08:00
|
|
|
|
2006-11-11 14:24:53 +08:00
|
|
|
config PPC_DCR_NATIVE
|
|
|
|
|
bool
|
|
|
|
|
default n
|
|
|
|
|
|
|
|
|
|
config PPC_DCR_MMIO
|
|
|
|
|
bool
|
|
|
|
|
default n
|
|
|
|
|
|
|
|
|
|
config PPC_DCR
|
|
|
|
|
bool
|
|
|
|
|
depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
|
|
|
|
|
default y
|
|
|
|
|
|
2006-11-11 14:25:08 +08:00
|
|
|
config PPC_OF_PLATFORM_PCI
|
|
|
|
|
bool
|
2007-12-21 12:37:07 +08:00
|
|
|
depends on PCI
|
2006-11-11 14:25:08 +08:00
|
|
|
depends on PPC64 # not supported on 32 bits yet
|
|
|
|
|
default n
|
|
|
|
|
|
2009-04-01 06:23:17 +08:00
|
|
|
config ARCH_SUPPORTS_DEBUG_PAGEALLOC
|
2015-01-27 03:22:22 +08:00
|
|
|
depends on PPC32 || PPC_STD_MMU_64
|
2009-04-01 06:23:17 +08:00
|
|
|
def_bool y
|
|
|
|
|
|
2012-08-24 05:31:32 +08:00
|
|
|
config ARCH_SUPPORTS_UPROBES
|
|
|
|
|
def_bool y
|
|
|
|
|
|
2010-02-08 19:50:57 +08:00
|
|
|
config PPC_ADV_DEBUG_REGS
|
|
|
|
|
bool
|
|
|
|
|
depends on 40x || BOOKE
|
|
|
|
|
default y
|
|
|
|
|
|
|
|
|
|
config PPC_ADV_DEBUG_IACS
|
|
|
|
|
int
|
|
|
|
|
depends on PPC_ADV_DEBUG_REGS
|
|
|
|
|
default 4 if 44x
|
|
|
|
|
default 2
|
|
|
|
|
|
|
|
|
|
config PPC_ADV_DEBUG_DACS
|
|
|
|
|
int
|
|
|
|
|
depends on PPC_ADV_DEBUG_REGS
|
|
|
|
|
default 2
|
|
|
|
|
|
|
|
|
|
config PPC_ADV_DEBUG_DVCS
|
|
|
|
|
int
|
|
|
|
|
depends on PPC_ADV_DEBUG_REGS
|
|
|
|
|
default 2 if 44x
|
|
|
|
|
default 0
|
|
|
|
|
|
|
|
|
|
config PPC_ADV_DEBUG_DAC_RANGE
|
|
|
|
|
bool
|
|
|
|
|
depends on PPC_ADV_DEBUG_REGS && 44x
|
|
|
|
|
default y
|
|
|
|
|
|
2013-01-07 08:26:57 +08:00
|
|
|
config PPC_EMULATE_SSTEP
|
|
|
|
|
bool
|
|
|
|
|
default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
|
|
|
|
|
|
2014-08-09 07:40:42 +08:00
|
|
|
config ZONE_DMA32
|
|
|
|
|
bool
|
|
|
|
|
default y if PPC64
|
|
|
|
|
|
2015-04-15 06:45:57 +08:00
|
|
|
config PGTABLE_LEVELS
|
|
|
|
|
int
|
|
|
|
|
default 2 if !PPC64
|
2016-03-01 12:15:13 +08:00
|
|
|
default 3 if PPC_64K_PAGES && !PPC_BOOK3S_64
|
2015-04-15 06:45:57 +08:00
|
|
|
default 4
|
|
|
|
|
|
2005-09-26 14:04:21 +08:00
|
|
|
source "init/Kconfig"
|
|
|
|
|
|
2008-10-19 11:27:21 +08:00
|
|
|
source "kernel/Kconfig.freezer"
|
|
|
|
|
|
[POWERPC] 4xx: PLB to PCI Express support
This adds to the previous 2 patches the support for the 4xx PCI Express
cells as found in the 440SPe revA, revB and 405EX.
Unfortunately, due to significant differences between these, and other
interesting "features" of those pieces of HW, the code isn't as simple
as it is for PCI and PCI-X and some of the functions differ significantly
between the 3 implementations. Thus, not only this code can only support
those 3 implementations for now and will refuse to operate on any other,
but there are added ifdef's to avoid the bloat of building a fairly large
amount of code on platforms that don't need it.
Also, this code currently only supports fully initializing root complex
nodes, not endpoint. Some more code will have to be lifted from the
arch/ppc implementation to add the endpoint support, though it's mostly
differences in memory mapping, and the question on how to represent
endpoint mode PCI in the device-tree is thus open.
Many thanks to Stefan Roese for testing & fixing up the 405EX bits !
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-12-21 12:39:24 +08:00
|
|
|
source "arch/powerpc/sysdev/Kconfig"
|
2007-03-16 22:32:17 +08:00
|
|
|
source "arch/powerpc/platforms/Kconfig"
|
2005-09-26 14:04:21 +08:00
|
|
|
|
|
|
|
|
menu "Kernel options"
|
|
|
|
|
|
|
|
|
|
config HIGHMEM
|
|
|
|
|
bool "High memory support"
|
|
|
|
|
depends on PPC32
|
|
|
|
|
|
|
|
|
|
source kernel/Kconfig.hz
|
|
|
|
|
source kernel/Kconfig.preempt
|
|
|
|
|
source "fs/Kconfig.binfmt"
|
|
|
|
|
|
2007-11-29 08:21:13 +08:00
|
|
|
config HUGETLB_PAGE_SIZE_VARIABLE
|
|
|
|
|
bool
|
|
|
|
|
depends on HUGETLB_PAGE
|
|
|
|
|
default y
|
|
|
|
|
|
2005-09-26 14:04:21 +08:00
|
|
|
config MATH_EMULATION
|
|
|
|
|
bool "Math emulation"
|
2013-06-09 15:01:24 +08:00
|
|
|
depends on 4xx || 8xx || PPC_MPC832x || BOOKE
|
2005-09-26 14:04:21 +08:00
|
|
|
---help---
|
|
|
|
|
Some PowerPC chips designed for embedded applications do not have
|
|
|
|
|
a floating-point unit and therefore do not implement the
|
|
|
|
|
floating-point instructions in the PowerPC instruction set. If you
|
|
|
|
|
say Y here, the kernel will include code to emulate a floating-point
|
|
|
|
|
unit, which will allow programs that use floating-point
|
|
|
|
|
instructions to run.
|
|
|
|
|
|
2013-06-09 15:01:24 +08:00
|
|
|
This is also useful to emulate missing (optional) instructions
|
|
|
|
|
such as fsqrt on cores that do have an FPU but do not implement
|
|
|
|
|
them (such as Freescale BookE).
|
|
|
|
|
|
2013-07-16 19:57:15 +08:00
|
|
|
choice
|
|
|
|
|
prompt "Math emulation options"
|
|
|
|
|
default MATH_EMULATION_FULL
|
|
|
|
|
depends on MATH_EMULATION
|
|
|
|
|
|
|
|
|
|
config MATH_EMULATION_FULL
|
|
|
|
|
bool "Emulate all the floating point instructions"
|
|
|
|
|
---help---
|
|
|
|
|
Select this option will enable the kernel to support to emulate
|
|
|
|
|
all the floating point instructions. If your SoC doesn't have
|
|
|
|
|
a FPU, you should select this.
|
|
|
|
|
|
|
|
|
|
config MATH_EMULATION_HW_UNIMPLEMENTED
|
|
|
|
|
bool "Just emulate the FPU unimplemented instructions"
|
|
|
|
|
---help---
|
|
|
|
|
Select this if you know there does have a hardware FPU on your
|
|
|
|
|
SoC, but some floating point instructions are not implemented by that.
|
|
|
|
|
|
|
|
|
|
endchoice
|
|
|
|
|
|
2013-02-14 00:21:43 +08:00
|
|
|
config PPC_TRANSACTIONAL_MEM
|
|
|
|
|
bool "Transactional Memory support for POWERPC"
|
|
|
|
|
depends on PPC_BOOK3S_64
|
|
|
|
|
depends on SMP
|
2014-01-08 18:25:31 +08:00
|
|
|
select ALTIVEC
|
|
|
|
|
select VSX
|
2013-02-14 00:21:43 +08:00
|
|
|
default n
|
|
|
|
|
---help---
|
|
|
|
|
Support user-mode Transactional Memory on POWERPC.
|
|
|
|
|
|
2016-03-03 12:27:00 +08:00
|
|
|
config DISABLE_MPROFILE_KERNEL
|
|
|
|
|
bool "Disable use of mprofile-kernel for kernel tracing"
|
|
|
|
|
depends on PPC64 && CPU_LITTLE_ENDIAN
|
|
|
|
|
default y
|
|
|
|
|
help
|
|
|
|
|
Selecting this options disables use of the mprofile-kernel ABI for
|
|
|
|
|
kernel tracing. That will cause options such as live patching
|
|
|
|
|
(CONFIG_LIVEPATCH) which depend on CONFIG_DYNAMIC_FTRACE_WITH_REGS to
|
|
|
|
|
be disabled also.
|
|
|
|
|
|
|
|
|
|
If you have a toolchain which supports mprofile-kernel, then you can
|
|
|
|
|
enable this. Otherwise leave it disabled. If you're not sure, say
|
|
|
|
|
"N".
|
|
|
|
|
|
|
|
|
|
config MPROFILE_KERNEL
|
|
|
|
|
depends on PPC64 && CPU_LITTLE_ENDIAN
|
|
|
|
|
def_bool !DISABLE_MPROFILE_KERNEL
|
|
|
|
|
|
2008-02-05 14:28:08 +08:00
|
|
|
config IOMMU_HELPER
|
|
|
|
|
def_bool PPC64
|
|
|
|
|
|
2009-05-14 20:42:28 +08:00
|
|
|
config SWIOTLB
|
|
|
|
|
bool "SWIOTLB support"
|
|
|
|
|
default n
|
|
|
|
|
select IOMMU_HELPER
|
|
|
|
|
---help---
|
|
|
|
|
Support for IO bounce buffering for systems without an IOMMU.
|
|
|
|
|
This allows us to DMA to the full physical address space on
|
|
|
|
|
platforms where the size of a physical address is larger
|
|
|
|
|
than the bus address. Not all platforms support this.
|
|
|
|
|
|
2005-09-26 14:04:21 +08:00
|
|
|
config HOTPLUG_CPU
|
|
|
|
|
bool "Support for enabling/disabling CPUs"
|
2013-05-21 11:49:35 +08:00
|
|
|
depends on SMP && (PPC_PSERIES || \
|
2015-11-20 17:14:01 +08:00
|
|
|
PPC_PMAC || PPC_POWERNV || FSL_SOC_BOOKE)
|
2005-09-26 14:04:21 +08:00
|
|
|
---help---
|
|
|
|
|
Say Y here to be able to disable and re-enable individual
|
|
|
|
|
CPUs at runtime on SMP machines.
|
|
|
|
|
|
|
|
|
|
Say N if you are unsure.
|
|
|
|
|
|
2009-11-26 01:23:25 +08:00
|
|
|
config ARCH_CPU_PROBE_RELEASE
|
|
|
|
|
def_bool y
|
|
|
|
|
depends on HOTPLUG_CPU
|
|
|
|
|
|
2006-06-29 17:24:27 +08:00
|
|
|
config ARCH_ENABLE_MEMORY_HOTPLUG
|
|
|
|
|
def_bool y
|
|
|
|
|
|
2008-02-05 16:10:18 +08:00
|
|
|
config ARCH_HAS_WALK_MEMORY
|
|
|
|
|
def_bool y
|
|
|
|
|
|
2008-02-05 16:10:17 +08:00
|
|
|
config ARCH_ENABLE_MEMORY_HOTREMOVE
|
|
|
|
|
def_bool y
|
|
|
|
|
|
2013-11-15 12:20:50 +08:00
|
|
|
config PPC64_SUPPORTS_MEMORY_FAILURE
|
|
|
|
|
bool "Add support for memory hwpoison"
|
|
|
|
|
depends on PPC_BOOK3S_64
|
|
|
|
|
default "y" if PPC_POWERNV
|
|
|
|
|
select ARCH_SUPPORTS_MEMORY_FAILURE
|
|
|
|
|
|
2005-09-26 14:04:21 +08:00
|
|
|
config KEXEC
|
2013-01-17 10:53:25 +08:00
|
|
|
bool "kexec system call"
|
2015-10-07 11:48:22 +08:00
|
|
|
depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) || PPC_BOOK3E
|
2015-09-10 06:38:55 +08:00
|
|
|
select KEXEC_CORE
|
2005-09-26 14:04:21 +08:00
|
|
|
help
|
|
|
|
|
kexec is a system call that implements the ability to shutdown your
|
|
|
|
|
current kernel, and to start another kernel. It is like a reboot
|
2006-06-29 13:32:47 +08:00
|
|
|
but it is independent of the system firmware. And like a reboot
|
2005-09-26 14:04:21 +08:00
|
|
|
you can start any kernel with it, not just Linux.
|
|
|
|
|
|
2006-06-29 13:32:47 +08:00
|
|
|
The name comes from the similarity to the exec system call.
|
2005-09-26 14:04:21 +08:00
|
|
|
|
|
|
|
|
It is an ongoing process to be certain the hardware in a machine
|
|
|
|
|
is properly shutdown, so do not be surprised if this code does not
|
2013-08-21 03:38:03 +08:00
|
|
|
initially work for you. As of this writing the exact hardware
|
|
|
|
|
interface is strongly in flux, so no good recommendation can be
|
|
|
|
|
made.
|
2005-09-26 14:04:21 +08:00
|
|
|
|
2006-01-15 05:48:25 +08:00
|
|
|
config CRASH_DUMP
|
2008-06-27 01:02:15 +08:00
|
|
|
bool "Build a kdump crash kernel"
|
2012-04-16 06:27:35 +08:00
|
|
|
depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
|
2014-07-01 02:45:30 +08:00
|
|
|
select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
|
2006-01-15 05:48:25 +08:00
|
|
|
help
|
|
|
|
|
Build a kernel suitable for use as a kdump capture kernel.
|
2008-10-22 01:38:10 +08:00
|
|
|
The same kernel binary can be used as production kernel and dump
|
|
|
|
|
capture kernel.
|
2006-01-15 05:48:25 +08:00
|
|
|
|
2012-02-16 09:14:22 +08:00
|
|
|
config FA_DUMP
|
|
|
|
|
bool "Firmware-assisted dump"
|
2013-10-28 12:00:35 +08:00
|
|
|
depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC
|
2008-03-22 07:50:50 +08:00
|
|
|
help
|
2012-02-16 09:14:22 +08:00
|
|
|
A robust mechanism to get reliable kernel crash dump with
|
|
|
|
|
assistance from firmware. This approach does not use kexec,
|
|
|
|
|
instead firmware assists in booting the kdump kernel
|
|
|
|
|
while preserving memory contents. Firmware-assisted dump
|
|
|
|
|
is meant to be a kdump replacement offering robustness and
|
|
|
|
|
speed not possible without system firmware assistance.
|
2008-03-22 07:50:50 +08:00
|
|
|
|
|
|
|
|
If unsure, say "N"
|
|
|
|
|
|
2005-09-26 14:04:21 +08:00
|
|
|
config IRQ_ALL_CPUS
|
|
|
|
|
bool "Distribute interrupts on all CPUs by default"
|
2013-05-15 17:21:01 +08:00
|
|
|
depends on SMP
|
2005-09-26 14:04:21 +08:00
|
|
|
help
|
|
|
|
|
This option gives the kernel permission to distribute IRQs across
|
|
|
|
|
multiple CPUs. Saying N here will route all IRQs to the first
|
|
|
|
|
CPU. Generally saying Y is safe, although some problems have been
|
|
|
|
|
reported with SMP Power Macintoshes with this option enabled.
|
|
|
|
|
|
2005-10-29 08:46:58 +08:00
|
|
|
config NUMA
|
|
|
|
|
bool "NUMA support"
|
|
|
|
|
depends on PPC64
|
|
|
|
|
default y if SMP && PPC_PSERIES
|
|
|
|
|
|
2006-04-11 13:53:53 +08:00
|
|
|
config NODES_SHIFT
|
|
|
|
|
int
|
2009-09-22 03:56:43 +08:00
|
|
|
default "8" if PPC64
|
2006-04-11 13:53:53 +08:00
|
|
|
default "4"
|
|
|
|
|
depends on NEED_MULTIPLE_NODES
|
|
|
|
|
|
2014-05-20 02:14:23 +08:00
|
|
|
config USE_PERCPU_NUMA_NODE_ID
|
|
|
|
|
def_bool y
|
|
|
|
|
depends on NUMA
|
|
|
|
|
|
2014-05-17 07:41:20 +08:00
|
|
|
config HAVE_MEMORYLESS_NODES
|
|
|
|
|
def_bool y
|
|
|
|
|
depends on NUMA
|
|
|
|
|
|
2005-09-26 14:04:21 +08:00
|
|
|
config ARCH_SELECT_MEMORY_MODEL
|
|
|
|
|
def_bool y
|
|
|
|
|
depends on PPC64
|
|
|
|
|
|
|
|
|
|
config ARCH_FLATMEM_ENABLE
|
2005-11-30 03:20:55 +08:00
|
|
|
def_bool y
|
|
|
|
|
depends on (PPC64 && !NUMA) || PPC32
|
2005-09-26 14:04:21 +08:00
|
|
|
|
2005-11-11 11:22:35 +08:00
|
|
|
config ARCH_SPARSEMEM_ENABLE
|
2005-09-26 14:04:21 +08:00
|
|
|
def_bool y
|
2005-11-30 03:20:55 +08:00
|
|
|
depends on PPC64
|
2007-10-16 16:24:17 +08:00
|
|
|
select SPARSEMEM_VMEMMAP_ENABLE
|
2005-09-26 14:04:21 +08:00
|
|
|
|
2005-11-11 11:22:35 +08:00
|
|
|
config ARCH_SPARSEMEM_DEFAULT
|
2005-09-26 14:04:21 +08:00
|
|
|
def_bool y
|
2007-02-13 08:46:06 +08:00
|
|
|
depends on (SMP && PPC_PSERIES) || PPC_PS3
|
2005-09-26 14:04:21 +08:00
|
|
|
|
2009-10-30 12:03:54 +08:00
|
|
|
config SYS_SUPPORTS_HUGETLBFS
|
2011-06-28 17:54:48 +08:00
|
|
|
bool
|
2009-10-30 12:03:54 +08:00
|
|
|
|
2006-09-27 16:49:49 +08:00
|
|
|
source "mm/Kconfig"
|
2005-09-26 14:04:21 +08:00
|
|
|
|
2005-11-08 01:39:48 +08:00
|
|
|
config ARCH_MEMORY_PROBE
|
|
|
|
|
def_bool y
|
|
|
|
|
depends on MEMORY_HOTPLUG
|
|
|
|
|
|
2006-10-22 01:24:14 +08:00
|
|
|
# Some NUMA nodes have memory ranges that span
|
|
|
|
|
# other nodes. Even though a pfn is valid and
|
|
|
|
|
# between a node's start and end pfns, it may not
|
|
|
|
|
# reside on that node. See memmap_init_zone()
|
|
|
|
|
# for details.
|
|
|
|
|
config NODES_SPAN_OTHER_NODES
|
|
|
|
|
def_bool y
|
|
|
|
|
depends on NEED_MULTIPLE_NODES
|
|
|
|
|
|
powerpc/44x: Support for 256KB PAGE_SIZE
This patch adds support for 256KB pages on ppc44x-based boards.
For simplification of implementation with 256KB pages we still assume
2-level paging. As a side effect this leads to wasting extra memory space
reserved for PTE tables: only 1/4 of pages allocated for PTEs are
actually used. But this may be an acceptable trade-off to achieve the
high performance we have with big PAGE_SIZEs in some applications (e.g.
RAID).
Also with 256KB PAGE_SIZE we increase THREAD_SIZE up to 32KB to minimize
the risk of stack overflows in the cases of on-stack arrays, which size
depends on the page size (e.g. multipage BIOs, NTFS, etc.).
With 256KB PAGE_SIZE we need to decrease the PKMAP_ORDER at least down
to 9, otherwise all high memory (2 ^ 10 * PAGE_SIZE == 256MB) we'll be
occupied by PKMAP addresses leaving no place for vmalloc. We do not
separate PKMAP_ORDER for 256K from 16K/64K PAGE_SIZE here; actually that
value of 10 in support for 16K/64K had been selected rather intuitively.
Thus now for all cases of PAGE_SIZE on ppc44x (including the default, 4KB,
one) we have 512 pages for PKMAP.
Because ELF standard supports only page sizes up to 64K, then you should
use binutils later than 2.17.50.0.3 with '-zmax-page-size' set to 256K
for building applications, which are to be run with the 256KB-page sized
kernel. If using the older binutils, then you should patch them like follows:
--- binutils/bfd/elf32-ppc.c.orig
+++ binutils/bfd/elf32-ppc.c
-#define ELF_MAXPAGESIZE 0x10000
+#define ELF_MAXPAGESIZE 0x40000
One more restriction we currently have with 256KB page sizes is inability
to use shmem safely, so, for now, the 256KB is available only if you turn
the CONFIG_SHMEM option off (another variant is to use BROKEN).
Though, if you need shmem with 256KB pages, you can always remove the !SHMEM
dependency in 'config PPC_256K_PAGES', and use the workaround available here:
http://lkml.org/lkml/2008/12/19/20
Signed-off-by: Yuri Tikhonov <yur@emcraft.com>
Signed-off-by: Ilya Yanok <yanok@emcraft.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2009-01-29 09:40:44 +08:00
|
|
|
config STDBINUTILS
|
|
|
|
|
bool "Using standard binutils settings"
|
|
|
|
|
depends on 44x
|
|
|
|
|
default y
|
|
|
|
|
help
|
|
|
|
|
Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
|
|
|
|
|
Note, that kernel will be able to run only those applications,
|
|
|
|
|
which had been compiled using binutils later than 2.17.50.0.3 with
|
|
|
|
|
'-zmax-page-size' set to 256K (the default is 64K). Or, if using
|
|
|
|
|
the older binutils, you can patch them with a trivial patch, which
|
|
|
|
|
changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
|
|
|
|
|
|
2008-12-11 09:55:41 +08:00
|
|
|
choice
|
|
|
|
|
prompt "Page size"
|
|
|
|
|
default PPC_4K_PAGES
|
2005-11-07 08:06:55 +08:00
|
|
|
help
|
2008-12-11 09:55:41 +08:00
|
|
|
Select the kernel logical page size. Increasing the page size
|
|
|
|
|
will reduce software overhead at each page boundary, allow
|
|
|
|
|
hardware prefetch mechanisms to be more effective, and allow
|
|
|
|
|
larger dma transfers increasing IO efficiency and reducing
|
|
|
|
|
overhead. However the utilization of memory will increase.
|
|
|
|
|
For example, each cached file will using a multiple of the
|
|
|
|
|
page size to hold its contents and the difference between the
|
|
|
|
|
end of file and the end of page is wasted.
|
|
|
|
|
|
|
|
|
|
Some dedicated systems, such as software raid serving with
|
|
|
|
|
accelerated calculations, have shown significant increases.
|
|
|
|
|
|
|
|
|
|
If you configure a 64 bit kernel for 64k pages but the
|
|
|
|
|
processor does not support them, then the kernel will simulate
|
|
|
|
|
them with 4k pages, loading them on demand, but with the
|
|
|
|
|
reduced software overhead and larger internal fragmentation.
|
|
|
|
|
For the 32 bit kernel, a large page option will not be offered
|
|
|
|
|
unless it is supported by the configured processor.
|
|
|
|
|
|
|
|
|
|
If unsure, choose 4K_PAGES.
|
|
|
|
|
|
|
|
|
|
config PPC_4K_PAGES
|
|
|
|
|
bool "4k page size"
|
2016-01-30 01:02:49 +08:00
|
|
|
select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64
|
2008-12-11 09:55:41 +08:00
|
|
|
|
|
|
|
|
config PPC_16K_PAGES
|
2015-08-07 14:19:46 +08:00
|
|
|
bool "16k page size"
|
|
|
|
|
depends on 44x || PPC_8xx
|
2008-12-11 09:55:41 +08:00
|
|
|
|
|
|
|
|
config PPC_64K_PAGES
|
2015-08-07 14:19:46 +08:00
|
|
|
bool "64k page size"
|
|
|
|
|
depends on !PPC_FSL_BOOK3E && (44x || PPC_STD_MMU_64 || PPC_BOOK3E_64)
|
2016-01-30 01:02:49 +08:00
|
|
|
select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64
|
2008-12-11 09:55:41 +08:00
|
|
|
|
powerpc/44x: Support for 256KB PAGE_SIZE
This patch adds support for 256KB pages on ppc44x-based boards.
For simplification of implementation with 256KB pages we still assume
2-level paging. As a side effect this leads to wasting extra memory space
reserved for PTE tables: only 1/4 of pages allocated for PTEs are
actually used. But this may be an acceptable trade-off to achieve the
high performance we have with big PAGE_SIZEs in some applications (e.g.
RAID).
Also with 256KB PAGE_SIZE we increase THREAD_SIZE up to 32KB to minimize
the risk of stack overflows in the cases of on-stack arrays, which size
depends on the page size (e.g. multipage BIOs, NTFS, etc.).
With 256KB PAGE_SIZE we need to decrease the PKMAP_ORDER at least down
to 9, otherwise all high memory (2 ^ 10 * PAGE_SIZE == 256MB) we'll be
occupied by PKMAP addresses leaving no place for vmalloc. We do not
separate PKMAP_ORDER for 256K from 16K/64K PAGE_SIZE here; actually that
value of 10 in support for 16K/64K had been selected rather intuitively.
Thus now for all cases of PAGE_SIZE on ppc44x (including the default, 4KB,
one) we have 512 pages for PKMAP.
Because ELF standard supports only page sizes up to 64K, then you should
use binutils later than 2.17.50.0.3 with '-zmax-page-size' set to 256K
for building applications, which are to be run with the 256KB-page sized
kernel. If using the older binutils, then you should patch them like follows:
--- binutils/bfd/elf32-ppc.c.orig
+++ binutils/bfd/elf32-ppc.c
-#define ELF_MAXPAGESIZE 0x10000
+#define ELF_MAXPAGESIZE 0x40000
One more restriction we currently have with 256KB page sizes is inability
to use shmem safely, so, for now, the 256KB is available only if you turn
the CONFIG_SHMEM option off (another variant is to use BROKEN).
Though, if you need shmem with 256KB pages, you can always remove the !SHMEM
dependency in 'config PPC_256K_PAGES', and use the workaround available here:
http://lkml.org/lkml/2008/12/19/20
Signed-off-by: Yuri Tikhonov <yur@emcraft.com>
Signed-off-by: Ilya Yanok <yanok@emcraft.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2009-01-29 09:40:44 +08:00
|
|
|
config PPC_256K_PAGES
|
2015-08-07 14:19:46 +08:00
|
|
|
bool "256k page size"
|
|
|
|
|
depends on 44x && !STDBINUTILS
|
powerpc/44x: Support for 256KB PAGE_SIZE
This patch adds support for 256KB pages on ppc44x-based boards.
For simplification of implementation with 256KB pages we still assume
2-level paging. As a side effect this leads to wasting extra memory space
reserved for PTE tables: only 1/4 of pages allocated for PTEs are
actually used. But this may be an acceptable trade-off to achieve the
high performance we have with big PAGE_SIZEs in some applications (e.g.
RAID).
Also with 256KB PAGE_SIZE we increase THREAD_SIZE up to 32KB to minimize
the risk of stack overflows in the cases of on-stack arrays, which size
depends on the page size (e.g. multipage BIOs, NTFS, etc.).
With 256KB PAGE_SIZE we need to decrease the PKMAP_ORDER at least down
to 9, otherwise all high memory (2 ^ 10 * PAGE_SIZE == 256MB) we'll be
occupied by PKMAP addresses leaving no place for vmalloc. We do not
separate PKMAP_ORDER for 256K from 16K/64K PAGE_SIZE here; actually that
value of 10 in support for 16K/64K had been selected rather intuitively.
Thus now for all cases of PAGE_SIZE on ppc44x (including the default, 4KB,
one) we have 512 pages for PKMAP.
Because ELF standard supports only page sizes up to 64K, then you should
use binutils later than 2.17.50.0.3 with '-zmax-page-size' set to 256K
for building applications, which are to be run with the 256KB-page sized
kernel. If using the older binutils, then you should patch them like follows:
--- binutils/bfd/elf32-ppc.c.orig
+++ binutils/bfd/elf32-ppc.c
-#define ELF_MAXPAGESIZE 0x10000
+#define ELF_MAXPAGESIZE 0x40000
One more restriction we currently have with 256KB page sizes is inability
to use shmem safely, so, for now, the 256KB is available only if you turn
the CONFIG_SHMEM option off (another variant is to use BROKEN).
Though, if you need shmem with 256KB pages, you can always remove the !SHMEM
dependency in 'config PPC_256K_PAGES', and use the workaround available here:
http://lkml.org/lkml/2008/12/19/20
Signed-off-by: Yuri Tikhonov <yur@emcraft.com>
Signed-off-by: Ilya Yanok <yanok@emcraft.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2009-01-29 09:40:44 +08:00
|
|
|
help
|
|
|
|
|
Make the page size 256k.
|
|
|
|
|
|
|
|
|
|
As the ELF standard only requires alignment to support page
|
|
|
|
|
sizes up to 64k, you will need to compile all of your user
|
|
|
|
|
space applications with a non-standard binutils settings
|
|
|
|
|
(see the STDBINUTILS description for details).
|
|
|
|
|
|
|
|
|
|
Say N unless you know what you are doing.
|
|
|
|
|
|
2008-12-11 09:55:41 +08:00
|
|
|
endchoice
|
2005-11-07 08:06:55 +08:00
|
|
|
|
2008-04-11 09:11:56 +08:00
|
|
|
config FORCE_MAX_ZONEORDER
|
|
|
|
|
int "Maximum zone order"
|
2016-02-19 13:38:47 +08:00
|
|
|
range 8 9 if PPC64 && PPC_64K_PAGES
|
2009-07-21 23:25:53 +08:00
|
|
|
default "9" if PPC64 && PPC_64K_PAGES
|
2016-02-19 13:38:47 +08:00
|
|
|
range 9 13 if PPC64 && !PPC_64K_PAGES
|
2009-07-21 23:25:53 +08:00
|
|
|
default "13" if PPC64 && !PPC_64K_PAGES
|
|
|
|
|
range 9 64 if PPC32 && PPC_16K_PAGES
|
|
|
|
|
default "9" if PPC32 && PPC_16K_PAGES
|
|
|
|
|
range 7 64 if PPC32 && PPC_64K_PAGES
|
|
|
|
|
default "7" if PPC32 && PPC_64K_PAGES
|
|
|
|
|
range 5 64 if PPC32 && PPC_256K_PAGES
|
|
|
|
|
default "5" if PPC32 && PPC_256K_PAGES
|
2008-09-24 12:29:08 +08:00
|
|
|
range 11 64
|
2008-04-11 09:11:56 +08:00
|
|
|
default "11"
|
|
|
|
|
help
|
|
|
|
|
The kernel memory allocator divides physically contiguous memory
|
|
|
|
|
blocks into "zones", where each zone is a power of two number of
|
|
|
|
|
pages. This option selects the largest power of two that the kernel
|
|
|
|
|
keeps in the memory allocator. If you need to allocate very large
|
|
|
|
|
blocks of physically contiguous memory, then you may need to
|
|
|
|
|
increase this value.
|
|
|
|
|
|
|
|
|
|
This config option is actually maximum order plus one. For example,
|
|
|
|
|
a value of 11 means that the largest free memory block is 2^10 pages.
|
|
|
|
|
|
|
|
|
|
The page size is not necessarily 4KB. For example, on 64-bit
|
|
|
|
|
systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
|
|
|
|
|
this in mind when choosing a value for this option.
|
|
|
|
|
|
[POWERPC] Provide a way to protect 4k subpages when using 64k pages
Using 64k pages on 64-bit PowerPC systems makes life difficult for
emulators that are trying to emulate an ISA, such as x86, which use a
smaller page size, since the emulator can no longer use the MMU and
the normal system calls for controlling page protections. Of course,
the emulator can emulate the MMU by checking and possibly remapping
the address for each memory access in software, but that is pretty
slow.
This provides a facility for such programs to control the access
permissions on individual 4k sub-pages of 64k pages. The idea is
that the emulator supplies an array of protection masks to apply to a
specified range of virtual addresses. These masks are applied at the
level where hardware PTEs are inserted into the hardware page table
based on the Linux PTEs, so the Linux PTEs are not affected. Note
that this new mechanism does not allow any access that would otherwise
be prohibited; it can only prohibit accesses that would otherwise be
allowed. This new facility is only available on 64-bit PowerPC and
only when the kernel is configured for 64k pages.
The masks are supplied using a new subpage_prot system call, which
takes a starting virtual address and length, and a pointer to an array
of protection masks in memory. The array has a 32-bit word per 64k
page to be protected; each 32-bit word consists of 16 2-bit fields,
for which 0 allows any access (that is otherwise allowed), 1 prevents
write accesses, and 2 or 3 prevent any access.
Implicit in this is that the regions of the address space that are
protected are switched to use 4k hardware pages rather than 64k
hardware pages (on machines with hardware 64k page support). In fact
the whole process is switched to use 4k hardware pages when the
subpage_prot system call is used, but this could be improved in future
to switch only the affected segments.
The subpage protection bits are stored in a 3 level tree akin to the
page table tree. The top level of this tree is stored in a structure
that is appended to the top level of the page table tree, i.e., the
pgd array. Since it will often only be 32-bit addresses (below 4GB)
that are protected, the pointers to the first four bottom level pages
are also stored in this structure (each bottom level page contains the
protection bits for 1GB of address space), so the protection bits for
addresses below 4GB can be accessed with one fewer loads than those
for higher addresses.
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-24 05:35:13 +08:00
|
|
|
config PPC_SUBPAGE_PROT
|
|
|
|
|
bool "Support setting protections for 4k subpages"
|
2008-12-11 09:55:41 +08:00
|
|
|
depends on PPC_STD_MMU_64 && PPC_64K_PAGES
|
[POWERPC] Provide a way to protect 4k subpages when using 64k pages
Using 64k pages on 64-bit PowerPC systems makes life difficult for
emulators that are trying to emulate an ISA, such as x86, which use a
smaller page size, since the emulator can no longer use the MMU and
the normal system calls for controlling page protections. Of course,
the emulator can emulate the MMU by checking and possibly remapping
the address for each memory access in software, but that is pretty
slow.
This provides a facility for such programs to control the access
permissions on individual 4k sub-pages of 64k pages. The idea is
that the emulator supplies an array of protection masks to apply to a
specified range of virtual addresses. These masks are applied at the
level where hardware PTEs are inserted into the hardware page table
based on the Linux PTEs, so the Linux PTEs are not affected. Note
that this new mechanism does not allow any access that would otherwise
be prohibited; it can only prohibit accesses that would otherwise be
allowed. This new facility is only available on 64-bit PowerPC and
only when the kernel is configured for 64k pages.
The masks are supplied using a new subpage_prot system call, which
takes a starting virtual address and length, and a pointer to an array
of protection masks in memory. The array has a 32-bit word per 64k
page to be protected; each 32-bit word consists of 16 2-bit fields,
for which 0 allows any access (that is otherwise allowed), 1 prevents
write accesses, and 2 or 3 prevent any access.
Implicit in this is that the regions of the address space that are
protected are switched to use 4k hardware pages rather than 64k
hardware pages (on machines with hardware 64k page support). In fact
the whole process is switched to use 4k hardware pages when the
subpage_prot system call is used, but this could be improved in future
to switch only the affected segments.
The subpage protection bits are stored in a 3 level tree akin to the
page table tree. The top level of this tree is stored in a structure
that is appended to the top level of the page table tree, i.e., the
pgd array. Since it will often only be 32-bit addresses (below 4GB)
that are protected, the pointers to the first four bottom level pages
are also stored in this structure (each bottom level page contains the
protection bits for 1GB of address space), so the protection bits for
addresses below 4GB can be accessed with one fewer loads than those
for higher addresses.
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-24 05:35:13 +08:00
|
|
|
help
|
|
|
|
|
This option adds support for a system call to allow user programs
|
|
|
|
|
to set access permissions (read/write, readonly, or no access)
|
|
|
|
|
on the 4k subpages of each 64k page.
|
|
|
|
|
|
2014-10-08 16:54:50 +08:00
|
|
|
config PPC_COPRO_BASE
|
|
|
|
|
bool
|
|
|
|
|
default n
|
|
|
|
|
|
2005-09-26 14:04:21 +08:00
|
|
|
config SCHED_SMT
|
|
|
|
|
bool "SMT (Hyperthreading) scheduler support"
|
|
|
|
|
depends on PPC64 && SMP
|
|
|
|
|
help
|
|
|
|
|
SMT scheduler support improves the CPU scheduler's decision making
|
|
|
|
|
when dealing with POWER5 cpus at a cost of slightly increased
|
|
|
|
|
overhead in some places. If unsure say N here.
|
|
|
|
|
|
2012-09-10 08:35:26 +08:00
|
|
|
config PPC_DENORMALISATION
|
|
|
|
|
bool "PowerPC denormalisation exception handling"
|
|
|
|
|
depends on PPC_BOOK3S_64
|
2013-07-31 14:31:26 +08:00
|
|
|
default "y" if PPC_POWERNV
|
2012-09-10 08:35:26 +08:00
|
|
|
---help---
|
|
|
|
|
Add support for handling denormalisation of single precision
|
|
|
|
|
values. Useful for bare metal only. If unsure say Y here.
|
|
|
|
|
|
2005-09-26 14:04:21 +08:00
|
|
|
config CMDLINE_BOOL
|
|
|
|
|
bool "Default bootloader kernel arguments"
|
|
|
|
|
|
|
|
|
|
config CMDLINE
|
|
|
|
|
string "Initial kernel command string"
|
|
|
|
|
depends on CMDLINE_BOOL
|
|
|
|
|
default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
|
|
|
|
|
help
|
|
|
|
|
On some platforms, there is currently no way for the boot loader to
|
|
|
|
|
pass arguments to the kernel. For these platforms, you can supply
|
|
|
|
|
some command-line options at build time by entering them here. In
|
|
|
|
|
most cases you will need to specify the root device here.
|
|
|
|
|
|
2014-02-21 04:48:17 +08:00
|
|
|
config CMDLINE_FORCE
|
|
|
|
|
bool "Always use the default kernel command string"
|
|
|
|
|
depends on CMDLINE_BOOL
|
|
|
|
|
help
|
|
|
|
|
Always use the default kernel command string, even if the boot
|
|
|
|
|
loader passes other arguments to the kernel.
|
|
|
|
|
This is useful if you cannot or don't want to change the
|
|
|
|
|
command-line options your boot loader passes to the kernel.
|
|
|
|
|
|
2008-07-09 23:41:52 +08:00
|
|
|
config EXTRA_TARGETS
|
|
|
|
|
string "Additional default image types"
|
|
|
|
|
help
|
|
|
|
|
List additional targets to be built by the bootwrapper here (separated
|
|
|
|
|
by spaces). This is useful for targets that depend of device tree
|
|
|
|
|
files in the .dts directory.
|
|
|
|
|
|
|
|
|
|
Targets in this list will be build as part of the default build
|
|
|
|
|
target, or when the user does a 'make zImage' or a
|
|
|
|
|
'make zImage.initrd'.
|
|
|
|
|
|
|
|
|
|
If unsure, leave blank
|
|
|
|
|
|
2008-01-16 12:17:00 +08:00
|
|
|
config ARCH_WANTS_FREEZER_CONTROL
|
|
|
|
|
def_bool y
|
|
|
|
|
depends on ADB_PMU
|
|
|
|
|
|
2005-09-26 14:04:21 +08:00
|
|
|
source kernel/power/Kconfig
|
|
|
|
|
|
|
|
|
|
config SECCOMP
|
|
|
|
|
bool "Enable seccomp to safely compute untrusted bytecode"
|
|
|
|
|
depends on PROC_FS
|
|
|
|
|
default y
|
|
|
|
|
help
|
|
|
|
|
This kernel feature is useful for number crunching applications
|
|
|
|
|
that may need to compute untrusted bytecode during their
|
|
|
|
|
execution. By using pipes or other transports made available to
|
|
|
|
|
the process as file descriptors supporting the read/write
|
|
|
|
|
syscalls, it's possible to isolate those applications in
|
|
|
|
|
their own address space using seccomp. Once seccomp is
|
|
|
|
|
enabled via /proc/<pid>/seccomp, it cannot be disabled
|
|
|
|
|
and the task is only allowed to execute a few safe syscalls
|
|
|
|
|
defined by each seccomp mode.
|
|
|
|
|
|
|
|
|
|
If unsure, say Y. Only embedded should say N here.
|
|
|
|
|
|
|
|
|
|
endmenu
|
|
|
|
|
|
|
|
|
|
config ISA_DMA_API
|
|
|
|
|
bool
|
2012-02-22 22:10:12 +08:00
|
|
|
default PCI
|
2005-09-26 14:04:21 +08:00
|
|
|
|
|
|
|
|
menu "Bus options"
|
|
|
|
|
|
|
|
|
|
config ISA
|
|
|
|
|
bool "Support for ISA-bus hardware"
|
2013-03-27 08:47:03 +08:00
|
|
|
depends on PPC_CHRP
|
2005-10-26 14:47:42 +08:00
|
|
|
select PPC_I8259
|
2005-09-26 14:04:21 +08:00
|
|
|
help
|
|
|
|
|
Find out whether you have ISA slots on your motherboard. ISA is the
|
|
|
|
|
name of a bus system, i.e. the way the CPU talks to the other stuff
|
|
|
|
|
inside your box. If you have an Apple machine, say N here; if you
|
2013-03-27 08:47:03 +08:00
|
|
|
have an IBM RS/6000 or pSeries machine, say Y. If you have an
|
|
|
|
|
embedded board, consult your board documentation.
|
2005-09-26 14:04:21 +08:00
|
|
|
|
2007-02-10 17:43:14 +08:00
|
|
|
config ZONE_DMA
|
|
|
|
|
bool
|
|
|
|
|
default y
|
|
|
|
|
|
2010-03-11 07:23:27 +08:00
|
|
|
config NEED_DMA_MAP_STATE
|
|
|
|
|
def_bool (PPC64 || NOT_COHERENT_CACHE)
|
|
|
|
|
|
2010-05-27 05:44:33 +08:00
|
|
|
config NEED_SG_DMA_LENGTH
|
|
|
|
|
def_bool y
|
|
|
|
|
|
2005-09-26 14:04:21 +08:00
|
|
|
config GENERIC_ISA_DMA
|
|
|
|
|
bool
|
2010-07-15 15:38:16 +08:00
|
|
|
depends on ISA_DMA_API
|
2005-09-26 14:04:21 +08:00
|
|
|
default y
|
|
|
|
|
|
2005-10-26 14:36:55 +08:00
|
|
|
config PPC_INDIRECT_PCI
|
|
|
|
|
bool
|
|
|
|
|
depends on PCI
|
2006-01-15 06:57:39 +08:00
|
|
|
default y if 40x || 44x
|
2005-10-26 14:36:55 +08:00
|
|
|
default n
|
|
|
|
|
|
2005-09-26 14:04:21 +08:00
|
|
|
config EISA
|
|
|
|
|
bool
|
|
|
|
|
|
|
|
|
|
config SBUS
|
|
|
|
|
bool
|
|
|
|
|
|
2006-01-11 11:43:56 +08:00
|
|
|
config FSL_SOC
|
|
|
|
|
bool
|
|
|
|
|
|
2007-07-10 18:44:34 +08:00
|
|
|
config FSL_PCI
|
|
|
|
|
bool
|
|
|
|
|
select PPC_INDIRECT_PCI
|
2009-01-29 03:25:29 +08:00
|
|
|
select PCI_QUIRKS
|
2007-07-10 18:44:34 +08:00
|
|
|
|
2009-09-16 05:43:57 +08:00
|
|
|
config FSL_PMC
|
|
|
|
|
bool
|
|
|
|
|
default y
|
|
|
|
|
depends on SUSPEND && (PPC_85xx || PPC_86xx)
|
|
|
|
|
help
|
|
|
|
|
Freescale MPC85xx/MPC86xx power management controller support
|
|
|
|
|
(suspend/resume). For MPC83xx see platforms/83xx/suspend.c
|
|
|
|
|
|
2010-10-08 18:25:27 +08:00
|
|
|
config PPC4xx_CPM
|
|
|
|
|
bool
|
|
|
|
|
default y
|
|
|
|
|
depends on SUSPEND && (44x || 40x)
|
|
|
|
|
help
|
|
|
|
|
PPC4xx Clock Power Management (CPM) support (suspend/resume).
|
|
|
|
|
It also enables support for two different idle states (idle-wait
|
|
|
|
|
and idle-doze).
|
|
|
|
|
|
2008-03-26 19:39:50 +08:00
|
|
|
config 4xx_SOC
|
|
|
|
|
bool
|
|
|
|
|
|
2008-04-12 01:03:40 +08:00
|
|
|
config FSL_LBC
|
2010-10-18 15:22:31 +08:00
|
|
|
bool "Freescale Local Bus support"
|
2008-04-12 01:03:40 +08:00
|
|
|
help
|
2010-10-18 15:22:31 +08:00
|
|
|
Enables reporting of errors from the Freescale local bus
|
|
|
|
|
controller. Also contains some common code used by
|
|
|
|
|
drivers for specific local bus peripherals.
|
2008-04-12 01:03:40 +08:00
|
|
|
|
2008-05-24 00:38:54 +08:00
|
|
|
config FSL_GTM
|
|
|
|
|
bool
|
|
|
|
|
depends on PPC_83xx || QUICC_ENGINE || CPM2
|
|
|
|
|
help
|
|
|
|
|
Freescale General-purpose Timers support
|
|
|
|
|
|
2005-09-26 14:04:21 +08:00
|
|
|
# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
|
|
|
|
|
config MCA
|
|
|
|
|
bool
|
|
|
|
|
|
2008-06-27 01:07:56 +08:00
|
|
|
# Platforms that what PCI turned unconditionally just do select PCI
|
|
|
|
|
# in their config node. Platforms that want to choose at config
|
|
|
|
|
# time should select PPC_PCI_CHOICE
|
|
|
|
|
config PPC_PCI_CHOICE
|
|
|
|
|
bool
|
|
|
|
|
|
2005-09-26 14:04:21 +08:00
|
|
|
config PCI
|
2008-06-27 01:07:56 +08:00
|
|
|
bool "PCI support" if PPC_PCI_CHOICE
|
|
|
|
|
default y if !40x && !CPM2 && !8xx && !PPC_83xx \
|
2009-12-12 14:31:39 +08:00
|
|
|
&& !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
|
2005-09-26 14:04:21 +08:00
|
|
|
default PCI_QSPAN if !4xx && !CPM2 && 8xx
|
2011-11-25 03:06:41 +08:00
|
|
|
select GENERIC_PCI_IOMAP
|
2005-09-26 14:04:21 +08:00
|
|
|
help
|
|
|
|
|
Find out whether your system includes a PCI bus. PCI is the name of
|
|
|
|
|
a bus system, i.e. the way the CPU talks to the other stuff inside
|
|
|
|
|
your box. If you say Y here, the kernel will include drivers and
|
|
|
|
|
infrastructure code to support PCI bus devices.
|
|
|
|
|
|
|
|
|
|
config PCI_DOMAINS
|
2007-07-11 00:54:40 +08:00
|
|
|
def_bool PCI
|
|
|
|
|
|
|
|
|
|
config PCI_SYSCALL
|
|
|
|
|
def_bool PCI
|
2005-09-26 14:04:21 +08:00
|
|
|
|
|
|
|
|
config PCI_QSPAN
|
|
|
|
|
bool "QSpan PCI"
|
|
|
|
|
depends on !4xx && !CPM2 && 8xx
|
2005-10-26 14:47:42 +08:00
|
|
|
select PPC_I8259
|
2005-09-26 14:04:21 +08:00
|
|
|
help
|
|
|
|
|
Say Y here if you have a system based on a Motorola 8xx-series
|
|
|
|
|
embedded processor with a QSPAN PCI interface, otherwise say N.
|
|
|
|
|
|
|
|
|
|
config PCI_8260
|
|
|
|
|
bool
|
|
|
|
|
depends on PCI && 8260
|
2005-10-26 14:36:55 +08:00
|
|
|
select PPC_INDIRECT_PCI
|
2005-09-26 14:04:21 +08:00
|
|
|
default y
|
|
|
|
|
|
|
|
|
|
source "drivers/pci/Kconfig"
|
|
|
|
|
|
|
|
|
|
source "drivers/pcmcia/Kconfig"
|
|
|
|
|
|
2008-04-19 04:33:39 +08:00
|
|
|
config HAS_RAPIDIO
|
|
|
|
|
bool
|
|
|
|
|
default n
|
|
|
|
|
|
|
|
|
|
config RAPIDIO
|
2014-01-24 07:56:04 +08:00
|
|
|
tristate "RapidIO support"
|
2011-03-24 07:43:03 +08:00
|
|
|
depends on HAS_RAPIDIO || PCI
|
2008-04-19 04:33:39 +08:00
|
|
|
help
|
|
|
|
|
If you say Y here, the kernel will include drivers and
|
|
|
|
|
infrastructure code to support RapidIO interconnect devices.
|
|
|
|
|
|
2011-03-24 07:43:03 +08:00
|
|
|
config FSL_RIO
|
|
|
|
|
bool "Freescale Embedded SRIO Controller support"
|
2014-01-24 07:56:04 +08:00
|
|
|
depends on RAPIDIO = y && HAS_RAPIDIO
|
2011-03-24 07:43:03 +08:00
|
|
|
default "n"
|
|
|
|
|
---help---
|
|
|
|
|
Include support for RapidIO controller on Freescale embedded
|
|
|
|
|
processors (MPC8548, MPC8641, etc).
|
|
|
|
|
|
2008-04-19 04:33:39 +08:00
|
|
|
source "drivers/rapidio/Kconfig"
|
|
|
|
|
|
2005-09-26 14:04:21 +08:00
|
|
|
endmenu
|
|
|
|
|
|
2011-12-15 06:57:15 +08:00
|
|
|
config NONSTATIC_KERNEL
|
|
|
|
|
bool
|
|
|
|
|
default n
|
|
|
|
|
|
2005-09-26 14:04:21 +08:00
|
|
|
menu "Advanced setup"
|
|
|
|
|
depends on PPC32
|
|
|
|
|
|
|
|
|
|
config ADVANCED_OPTIONS
|
|
|
|
|
bool "Prompt for advanced kernel configuration options"
|
|
|
|
|
help
|
|
|
|
|
This option will enable prompting for a variety of advanced kernel
|
|
|
|
|
configuration options. These options can cause the kernel to not
|
|
|
|
|
work if they are set incorrectly, but can be used to optimize certain
|
|
|
|
|
aspects of kernel memory management.
|
|
|
|
|
|
|
|
|
|
Unless you know what you are doing, say N here.
|
|
|
|
|
|
|
|
|
|
comment "Default settings for advanced configuration options are used"
|
|
|
|
|
depends on !ADVANCED_OPTIONS
|
|
|
|
|
|
|
|
|
|
config LOWMEM_SIZE_BOOL
|
|
|
|
|
bool "Set maximum low memory"
|
|
|
|
|
depends on ADVANCED_OPTIONS
|
|
|
|
|
help
|
|
|
|
|
This option allows you to set the maximum amount of memory which
|
|
|
|
|
will be used as "low memory", that is, memory which the kernel can
|
|
|
|
|
access directly, without having to set up a kernel virtual mapping.
|
|
|
|
|
This can be useful in optimizing the layout of kernel virtual
|
|
|
|
|
memory.
|
|
|
|
|
|
|
|
|
|
Say N here unless you know what you are doing.
|
|
|
|
|
|
|
|
|
|
config LOWMEM_SIZE
|
|
|
|
|
hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
|
|
|
|
|
default "0x30000000"
|
|
|
|
|
|
2008-12-09 11:34:58 +08:00
|
|
|
config LOWMEM_CAM_NUM_BOOL
|
|
|
|
|
bool "Set number of CAMs to use to map low memory"
|
|
|
|
|
depends on ADVANCED_OPTIONS && FSL_BOOKE
|
|
|
|
|
help
|
|
|
|
|
This option allows you to set the maximum number of CAM slots that
|
|
|
|
|
will be used to map low memory. There are a limited number of slots
|
|
|
|
|
available and even more limited number that will fit in the L1 MMU.
|
|
|
|
|
However, using more entries will allow mapping more low memory. This
|
|
|
|
|
can be useful in optimizing the layout of kernel virtual memory.
|
|
|
|
|
|
|
|
|
|
Say N here unless you know what you are doing.
|
|
|
|
|
|
|
|
|
|
config LOWMEM_CAM_NUM
|
2009-03-31 20:05:50 +08:00
|
|
|
depends on FSL_BOOKE
|
2008-12-09 11:34:58 +08:00
|
|
|
int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
|
|
|
|
|
default 3
|
|
|
|
|
|
2011-12-15 06:57:15 +08:00
|
|
|
config DYNAMIC_MEMSTART
|
2013-01-17 10:53:25 +08:00
|
|
|
bool "Enable page aligned dynamic load address for kernel"
|
|
|
|
|
depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
|
2011-12-15 06:57:15 +08:00
|
|
|
select NONSTATIC_KERNEL
|
|
|
|
|
help
|
|
|
|
|
This option enables the kernel to be loaded at any page aligned
|
|
|
|
|
physical address. The kernel creates a mapping from KERNELBASE to
|
|
|
|
|
the address where the kernel is loaded. The page size here implies
|
|
|
|
|
the TLB page size of the mapping for kernel on the particular platform.
|
|
|
|
|
Please refer to the init code for finding the TLB page size.
|
|
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|
|
|
|
|
|
DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
|
|
|
|
|
kernel image, where the only restriction is the page aligned kernel
|
|
|
|
|
load address. When this option is enabled, the compile time physical
|
|
|
|
|
address CONFIG_PHYSICAL_START is ignored.
|
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|
|
|
2011-12-15 06:58:12 +08:00
|
|
|
This option is overridden by CONFIG_RELOCATABLE
|
|
|
|
|
|
2008-04-22 02:22:34 +08:00
|
|
|
config RELOCATABLE
|
2013-01-17 10:53:25 +08:00
|
|
|
bool "Build a relocatable kernel"
|
2013-12-24 15:12:06 +08:00
|
|
|
depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE)
|
2011-12-15 06:58:12 +08:00
|
|
|
select NONSTATIC_KERNEL
|
2008-04-22 02:22:34 +08:00
|
|
|
help
|
|
|
|
|
This builds a kernel image that is capable of running at the
|
2011-12-15 06:58:12 +08:00
|
|
|
location the kernel is loaded at, without any alignment restrictions.
|
|
|
|
|
This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
|
2008-04-22 02:22:34 +08:00
|
|
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|
|
|
|
|
One use is for the kexec on panic case where the recovery kernel
|
|
|
|
|
must live at a different physical address than the primary
|
|
|
|
|
kernel.
|
|
|
|
|
|
|
|
|
|
Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
|
|
|
|
|
it has been loaded at and the compile time physical addresses
|
|
|
|
|
CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
|
|
|
|
|
setting can still be useful to bootwrappers that need to know the
|
2011-12-15 06:58:12 +08:00
|
|
|
load address of the kernel (eg. u-boot/mkimage).
|
|
|
|
|
|
|
|
|
|
config RELOCATABLE_PPC32
|
|
|
|
|
def_bool y
|
|
|
|
|
depends on PPC32 && RELOCATABLE
|
2008-04-22 02:22:34 +08:00
|
|
|
|
|
|
|
|
config PAGE_OFFSET_BOOL
|
|
|
|
|
bool "Set custom page offset address"
|
|
|
|
|
depends on ADVANCED_OPTIONS
|
|
|
|
|
help
|
|
|
|
|
This option allows you to set the kernel virtual address at which
|
|
|
|
|
the kernel will map low memory. This can be useful in optimizing
|
|
|
|
|
the virtual memory layout of the system.
|
|
|
|
|
|
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|
|
|
Say N here unless you know what you are doing.
|
|
|
|
|
|
|
|
|
|
config PAGE_OFFSET
|
|
|
|
|
hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
|
|
|
|
|
default "0xc0000000"
|
|
|
|
|
|
2005-09-26 14:04:21 +08:00
|
|
|
config KERNEL_START_BOOL
|
|
|
|
|
bool "Set custom kernel base address"
|
|
|
|
|
depends on ADVANCED_OPTIONS
|
|
|
|
|
help
|
|
|
|
|
This option allows you to set the kernel virtual address at which
|
2008-04-22 02:22:34 +08:00
|
|
|
the kernel will be loaded. Normally this should match PAGE_OFFSET
|
|
|
|
|
however there are times (like kdump) that one might not want them
|
|
|
|
|
to be the same.
|
2005-09-26 14:04:21 +08:00
|
|
|
|
|
|
|
|
Say N here unless you know what you are doing.
|
|
|
|
|
|
|
|
|
|
config KERNEL_START
|
|
|
|
|
hex "Virtual address of kernel base" if KERNEL_START_BOOL
|
2008-04-22 02:22:34 +08:00
|
|
|
default PAGE_OFFSET if PAGE_OFFSET_BOOL
|
2011-12-15 06:57:15 +08:00
|
|
|
default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
|
2005-09-26 14:04:21 +08:00
|
|
|
default "0xc0000000"
|
|
|
|
|
|
2008-04-22 02:22:34 +08:00
|
|
|
config PHYSICAL_START_BOOL
|
|
|
|
|
bool "Set physical address where the kernel is loaded"
|
|
|
|
|
depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
|
|
|
|
|
help
|
|
|
|
|
This gives the physical address where the kernel is loaded.
|
|
|
|
|
|
|
|
|
|
Say N here unless you know what you are doing.
|
|
|
|
|
|
|
|
|
|
config PHYSICAL_START
|
|
|
|
|
hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
|
2011-12-15 06:57:15 +08:00
|
|
|
default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
|
2008-04-22 02:22:34 +08:00
|
|
|
default "0x00000000"
|
|
|
|
|
|
|
|
|
|
config PHYSICAL_ALIGN
|
|
|
|
|
hex
|
2008-12-09 11:34:59 +08:00
|
|
|
default "0x04000000" if FSL_BOOKE
|
2008-04-22 02:22:34 +08:00
|
|
|
help
|
|
|
|
|
This value puts the alignment restrictions on physical address
|
|
|
|
|
where kernel is loaded and run from. Kernel is compiled for an
|
|
|
|
|
address which meets above alignment restriction.
|
|
|
|
|
|
2005-09-26 14:04:21 +08:00
|
|
|
config TASK_SIZE_BOOL
|
|
|
|
|
bool "Set custom user task size"
|
|
|
|
|
depends on ADVANCED_OPTIONS
|
|
|
|
|
help
|
|
|
|
|
This option allows you to set the amount of virtual address space
|
|
|
|
|
allocated to user tasks. This can be useful in optimizing the
|
|
|
|
|
virtual memory layout of the system.
|
|
|
|
|
|
|
|
|
|
Say N here unless you know what you are doing.
|
|
|
|
|
|
|
|
|
|
config TASK_SIZE
|
|
|
|
|
hex "Size of user task space" if TASK_SIZE_BOOL
|
2013-03-27 08:47:03 +08:00
|
|
|
default "0x80000000" if PPC_8xx
|
2007-10-12 02:40:21 +08:00
|
|
|
default "0xc0000000"
|
2005-09-26 14:04:21 +08:00
|
|
|
|
2009-05-27 11:33:14 +08:00
|
|
|
config CONSISTENT_SIZE_BOOL
|
|
|
|
|
bool "Set custom consistent memory pool size"
|
|
|
|
|
depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
|
|
|
|
|
help
|
|
|
|
|
This option allows you to set the size of the
|
|
|
|
|
consistent memory pool. This pool of virtual memory
|
|
|
|
|
is used to make consistent memory allocations.
|
|
|
|
|
|
|
|
|
|
config CONSISTENT_SIZE
|
|
|
|
|
hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
|
|
|
|
|
default "0x00200000" if NOT_COHERENT_CACHE
|
|
|
|
|
|
2005-09-26 14:04:21 +08:00
|
|
|
config PIN_TLB
|
|
|
|
|
bool "Pinned Kernel TLBs (860 ONLY)"
|
|
|
|
|
depends on ADVANCED_OPTIONS && 8xx
|
|
|
|
|
endmenu
|
|
|
|
|
|
2005-09-30 14:16:52 +08:00
|
|
|
if PPC64
|
powerpc: Make the 64-bit kernel as a position-independent executable
This implements CONFIG_RELOCATABLE for 64-bit by making the kernel as
a position-independent executable (PIE) when it is set. This involves
processing the dynamic relocations in the image in the early stages of
booting, even if the kernel is being run at the address it is linked at,
since the linker does not necessarily fill in words in the image for
which there are dynamic relocations. (In fact the linker does fill in
such words for 64-bit executables, though not for 32-bit executables,
so in principle we could avoid calling relocate() entirely when we're
running a 64-bit kernel at the linked address.)
The dynamic relocations are processed by a new function relocate(addr),
where the addr parameter is the virtual address where the image will be
run. In fact we call it twice; once before calling prom_init, and again
when starting the main kernel. This means that reloc_offset() returns
0 in prom_init (since it has been relocated to the address it is running
at), which necessitated a few adjustments.
This also changes __va and __pa to use an equivalent definition that is
simpler. With the relocatable kernel, PAGE_OFFSET and MEMORY_START are
constants (for 64-bit) whereas PHYSICAL_START is a variable (and
KERNELBASE ideally should be too, but isn't yet).
With this, relocatable kernels still copy themselves down to physical
address 0 and run there.
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-08-30 09:43:47 +08:00
|
|
|
config RELOCATABLE
|
|
|
|
|
bool "Build a relocatable kernel"
|
2014-07-01 02:45:30 +08:00
|
|
|
depends on !COMPILE_TEST
|
2011-12-15 06:57:15 +08:00
|
|
|
select NONSTATIC_KERNEL
|
powerpc: Make the 64-bit kernel as a position-independent executable
This implements CONFIG_RELOCATABLE for 64-bit by making the kernel as
a position-independent executable (PIE) when it is set. This involves
processing the dynamic relocations in the image in the early stages of
booting, even if the kernel is being run at the address it is linked at,
since the linker does not necessarily fill in words in the image for
which there are dynamic relocations. (In fact the linker does fill in
such words for 64-bit executables, though not for 32-bit executables,
so in principle we could avoid calling relocate() entirely when we're
running a 64-bit kernel at the linked address.)
The dynamic relocations are processed by a new function relocate(addr),
where the addr parameter is the virtual address where the image will be
run. In fact we call it twice; once before calling prom_init, and again
when starting the main kernel. This means that reloc_offset() returns
0 in prom_init (since it has been relocated to the address it is running
at), which necessitated a few adjustments.
This also changes __va and __pa to use an equivalent definition that is
simpler. With the relocatable kernel, PAGE_OFFSET and MEMORY_START are
constants (for 64-bit) whereas PHYSICAL_START is a variable (and
KERNELBASE ideally should be too, but isn't yet).
With this, relocatable kernels still copy themselves down to physical
address 0 and run there.
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-08-30 09:43:47 +08:00
|
|
|
help
|
|
|
|
|
This builds a kernel image that is capable of running anywhere
|
|
|
|
|
in the RMA (real memory area) at any 16k-aligned base address.
|
|
|
|
|
The kernel is linked as a position-independent executable (PIE)
|
|
|
|
|
and contains dynamic relocations which are processed early
|
|
|
|
|
in the bootup process.
|
|
|
|
|
|
|
|
|
|
One use is for the kexec on panic case where the recovery kernel
|
|
|
|
|
must live at a different physical address than the primary
|
|
|
|
|
kernel.
|
|
|
|
|
|
powerpc: Work around gcc miscompilation of __pa() on 64-bit
On 64-bit, __pa(&static_var) gets miscompiled by recent versions of
gcc as something like:
addis 3,2,.LANCHOR1+4611686018427387904@toc@ha
addi 3,3,.LANCHOR1+4611686018427387904@toc@l
This ends up effectively ignoring the offset, since its bottom 32 bits
are zero, and means that the result of __pa() still has 0xC in the top
nibble. This happens with gcc 4.8.1, at least.
To work around this, for 64-bit we make __pa() use an AND operator,
and for symmetry, we make __va() use an OR operator. Using an AND
operator rather than a subtraction ends up with slightly shorter code
since it can be done with a single clrldi instruction, whereas it
takes three instructions to form the constant (-PAGE_OFFSET) and add
it on. (Note that MEMORY_START is always 0 on 64-bit.)
CC: <stable@vger.kernel.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-08-27 14:07:49 +08:00
|
|
|
# This value must have zeroes in the bottom 60 bits otherwise lots will break
|
2008-04-22 02:22:34 +08:00
|
|
|
config PAGE_OFFSET
|
|
|
|
|
hex
|
|
|
|
|
default "0xc000000000000000"
|
2005-09-30 14:16:52 +08:00
|
|
|
config KERNEL_START
|
|
|
|
|
hex
|
2005-09-30 15:24:15 +08:00
|
|
|
default "0xc000000000000000"
|
2008-04-22 02:22:34 +08:00
|
|
|
config PHYSICAL_START
|
|
|
|
|
hex
|
|
|
|
|
default "0x00000000"
|
2005-09-30 14:16:52 +08:00
|
|
|
endif
|
|
|
|
|
|
2013-10-11 11:07:57 +08:00
|
|
|
config ARCH_RANDOM
|
|
|
|
|
def_bool n
|
|
|
|
|
|
2005-09-26 14:04:21 +08:00
|
|
|
source "net/Kconfig"
|
|
|
|
|
|
|
|
|
|
source "drivers/Kconfig"
|
|
|
|
|
|
|
|
|
|
source "fs/Kconfig"
|
|
|
|
|
|
|
|
|
|
source "lib/Kconfig"
|
|
|
|
|
|
|
|
|
|
source "arch/powerpc/Kconfig.debug"
|
|
|
|
|
|
|
|
|
|
source "security/Kconfig"
|
|
|
|
|
|
|
|
|
|
config KEYS_COMPAT
|
|
|
|
|
bool
|
|
|
|
|
depends on COMPAT && KEYS
|
|
|
|
|
default y
|
|
|
|
|
|
|
|
|
|
source "crypto/Kconfig"
|
2007-09-20 22:00:11 +08:00
|
|
|
|
2007-09-16 18:53:25 +08:00
|
|
|
config PPC_LIB_RHEAP
|
|
|
|
|
bool
|
|
|
|
|
|
2008-04-17 12:28:09 +08:00
|
|
|
source "arch/powerpc/kvm/Kconfig"
|
powerpc/livepatch: Add live patching support on ppc64le
Add the kconfig logic & assembly support for handling live patched
functions. This depends on DYNAMIC_FTRACE_WITH_REGS, which in turn
depends on the new -mprofile-kernel ftrace ABI, which is only supported
currently on ppc64le.
Live patching is handled by a special ftrace handler. This means it runs
from ftrace_caller(). The live patch handler modifies the NIP so as to
redirect the return from ftrace_caller() to the new patched function.
However there is one particularly tricky case we need to handle.
If a function A calls another function B, and it is known at link time
that they share the same TOC, then A will not save or restore its TOC,
and will call the local entry point of B.
When we live patch B, we replace it with a new function C, which may
not have the same TOC as A. At live patch time it's too late to modify A
to do the TOC save/restore, so the live patching code must interpose
itself between A and C, and do the TOC save/restore that A omitted.
An additionaly complication is that the livepatch code can not create a
stack frame in order to save the TOC. That is because if C takes > 8
arguments, or is varargs, A will have written the arguments for C in
A's stack frame.
To solve this, we introduce a "livepatch stack" which grows upward from
the base of the regular stack, and is used to store the TOC & LR when
calling a live patched function.
When the patched function returns, we retrieve the real LR & TOC from
the livepatch stack, restore them, and pop the livepatch "stack frame".
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Torsten Duwe <duwe@suse.de>
Reviewed-by: Balbir Singh <bsingharora@gmail.com>
2016-03-24 19:04:05 +08:00
|
|
|
|
|
|
|
|
source "kernel/livepatch/Kconfig"
|