default 64 if PPC64
default 32 if !PPC64
-config PPC_MERGE
- def_bool y
+config ARCH_PHYS_ADDR_T_64BIT
+ def_bool PPC64 || PHYS_64BIT
config MMU
bool
bool
default y
+config GENERIC_HARDIRQS_NO__DO_IRQ
+ bool
+ default y
+
config HAVE_SETUP_PER_CPU_AREA
def_bool PPC64
config TRACE_IRQFLAGS_SUPPORT
bool
- depends on PPC64
default y
config LOCKDEP_SUPPORT
bool
default y
-config GENERIC_CALIBRATE_DELAY
- bool
- default y
-
config GENERIC_FIND_NEXT_BIT
bool
default y
config PPC
bool
default y
+ select HAVE_FTRACE_MCOUNT_RECORD
select HAVE_DYNAMIC_FTRACE
- select HAVE_FTRACE
+ select HAVE_FUNCTION_TRACER
+ select HAVE_FUNCTION_GRAPH_TRACER
+ select ARCH_WANT_OPTIONAL_GPIOLIB
select HAVE_IDE
+ select HAVE_IOREMAP_PROT
+ select HAVE_EFFICIENT_UNALIGNED_ACCESS
select HAVE_KPROBES
+ select HAVE_ARCH_KGDB
select HAVE_KRETPROBES
+ select HAVE_ARCH_TRACEHOOK
select HAVE_LMB
select HAVE_DMA_ATTRS if PPC64
select USE_GENERIC_SMP_HELPERS if SMP
select HAVE_OPROFILE
+ select HAVE_SYSCALL_WRAPPERS if PPC64
+ select GENERIC_ATOMIC64 if PPC32
+ select HAVE_PERF_COUNTERS
config EARLY_PRINTK
bool
bool
default y if PPC32
-config SCHED_NO_NO_OMIT_FRAME_POINTER
+config SCHED_OMIT_FRAME_POINTER
bool
default y
default y if PMAC_APM_EMU
bool
+config DTC
+ bool
+ default y
+
config DEFAULT_UIMAGE
bool
help
depends on PPC64 # not supported on 32 bits yet
default n
+config ARCH_SUPPORTS_DEBUG_PAGEALLOC
+ def_bool y
+
source "init/Kconfig"
+source "kernel/Kconfig.freezer"
+
source "arch/powerpc/sysdev/Kconfig"
source "arch/powerpc/platforms/Kconfig"
config IOMMU_HELPER
def_bool PPC64
+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.
+
+config PPC_NEED_DMA_SYNC_OPS
+ def_bool y
+ depends on (NOT_COHERENT_CACHE || SWIOTLB)
+
config HOTPLUG_CPU
bool "Support for enabling/disabling CPUs"
depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
config KEXEC
bool "kexec system call (EXPERIMENTAL)"
- depends on (PPC_PRPMC2800 || PPC_MULTIPLATFORM) && EXPERIMENTAL
+ depends on PPC_BOOK3S && EXPERIMENTAL
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
config CRASH_DUMP
bool "Build a kdump crash kernel"
- depends on PPC_MULTIPLATFORM && PPC64
+ depends on PPC64 || 6xx
+ select RELOCATABLE if PPC64
help
Build a kernel suitable for use as a kdump capture kernel.
- The kernel will be linked at a different address than normal, and
- so can only be used for Kdump.
-
- Don't change this unless you know what you are doing.
+ The same kernel binary can be used as production kernel and dump
+ capture kernel.
config PHYP_DUMP
bool "Hypervisor-assisted dump (EXPERIMENTAL)"
help
Hypervisor-assisted dump is meant to be a kdump replacement
offering robustness and speed not possible without system
- hypervisor assistence.
+ hypervisor assistance.
If unsure, say "N"
depends on PPC64
default n
+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.
+
+choice
+ prompt "Page size"
+ default PPC_4K_PAGES
+ help
+ 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"
+
+config PPC_16K_PAGES
+ bool "16k page size" if 44x
+
config PPC_64K_PAGES
- bool "64k page size"
- depends on PPC64
- select PPC_HAS_HASH_64K
+ bool "64k page size" if 44x || PPC_STD_MMU_64
+ select PPC_HAS_HASH_64K if PPC_STD_MMU_64
+
+config PPC_256K_PAGES
+ bool "256k page size" if 44x
+ depends on !STDBINUTILS
help
- This option changes the kernel logical page size to 64k. On machines
- without processor support for 64k pages, the kernel will simulate
- them by loading each individual 4k page on demand transparently,
- while on hardware with such support, it will be used to map
- normal application pages.
+ 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.
+
+endchoice
config FORCE_MAX_ZONEORDER
int "Maximum zone order"
- default "9" if PPC_64K_PAGES
- default "13" if PPC64 && !PPC_64K_PAGES
+ range 9 64 if PPC_STD_MMU_64 && PPC_64K_PAGES
+ default "9" if PPC_STD_MMU_64 && PPC_64K_PAGES
+ range 13 64 if PPC_STD_MMU_64 && !PPC_64K_PAGES
+ default "13" if PPC_STD_MMU_64 && !PPC_64K_PAGES
+ range 9 64 if PPC_STD_MMU_32 && PPC_16K_PAGES
+ default "9" if PPC_STD_MMU_32 && PPC_16K_PAGES
+ range 7 64 if PPC_STD_MMU_32 && PPC_64K_PAGES
+ default "7" if PPC_STD_MMU_32 && PPC_64K_PAGES
+ range 5 64 if PPC_STD_MMU_32 && PPC_256K_PAGES
+ default "5" if PPC_STD_MMU_32 && PPC_256K_PAGES
+ range 11 64
default "11"
help
The kernel memory allocator divides physically contiguous memory
config PPC_SUBPAGE_PROT
bool "Support setting protections for 4k subpages"
- depends on PPC_64K_PAGES
+ depends on PPC_STD_MMU_64 && PPC_64K_PAGES
help
This option adds support for a system call to allow user programs
to set access permissions (read/write, readonly, or no access)
config FSL_PCI
bool
select PPC_INDIRECT_PCI
+ select PCI_QUIRKS
config 4xx_SOC
bool
hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
default "0x30000000"
+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
+ depends on FSL_BOOKE
+ int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
+ default 3
+
config RELOCATABLE
bool "Build a relocatable kernel (EXPERIMENTAL)"
depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
config PHYSICAL_ALIGN
hex
- default "0x10000000" if FSL_BOOKE
+ default "0x04000000" if FSL_BOOKE
help
This value puts the alignment restrictions on physical address
where kernel is loaded and run from. Kernel is compiled for an
default "0x80000000" if PPC_PREP || PPC_8xx
default "0xc0000000"
-config CONSISTENT_START_BOOL
- bool "Set custom consistent memory pool address"
- depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
- help
- This option allows you to set the base virtual address
- of the consistent memory pool. This pool of virtual
- memory is used to make consistent memory allocations.
-
-config CONSISTENT_START
- hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
- default "0xfd000000" if (NOT_COHERENT_CACHE && 8xx)
- default "0xff100000" if NOT_COHERENT_CACHE
-
config CONSISTENT_SIZE_BOOL
bool "Set custom consistent memory pool size"
depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
endmenu
if PPC64
+config RELOCATABLE
+ bool "Build a relocatable kernel"
+ 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.
+
config PAGE_OFFSET
hex
default "0xc000000000000000"
config KERNEL_START
hex
- default "0xc000000002000000" if CRASH_DUMP
default "0xc000000000000000"
config PHYSICAL_START
hex
- default "0x02000000" if CRASH_DUMP
default "0x00000000"
endif
source "fs/Kconfig"
-# XXX source "arch/ppc/8xx_io/Kconfig"
-
-# XXX source "arch/ppc/8260_io/Kconfig"
-
source "arch/powerpc/sysdev/qe_lib/Kconfig"
source "lib/Kconfig"
config PPC_CLOCK
bool
default n
+ select HAVE_CLK
config PPC_LIB_RHEAP
bool