forked from luck/tmp_suning_uos_patched
5ac6da669e
As Andi pointed out: CONFIG_GENERIC_ISA_DMA only disables the ISA DMA channel management. Other functionality may still expect GFP_DMA to provide memory below 16M. So we need to make sure that CONFIG_ZONE_DMA is set independent of CONFIG_GENERIC_ISA_DMA. Undo the modifications to mm/Kconfig where we made ZONE_DMA dependent on GENERIC_ISA_DMA and set theses explicitly in each arches Kconfig. Reviews must occur for each arch in order to determine if ZONE_DMA can be switched off. It can only be switched off if we know that all devices supported by a platform are capable of performing DMA transfers to all of memory (Some arches already support this: uml, avr32, sh sh64, parisc and IA64/Altix). In order to switch ZONE_DMA off conditionally, one would have to establish a scheme by which one can assure that no drivers are enabled that are only capable of doing I/O to a part of memory, or one needs to provide an alternate means of performing an allocation from a specific range of memory (like provided by alloc_pages_range()) and insure that all drivers use that call. In that case the arches alloc_dma_coherent() may need to be modified to call alloc_pages_range() instead of relying on GFP_DMA. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
254 lines
5.7 KiB
Plaintext
254 lines
5.7 KiB
Plaintext
#
|
|
# For a description of the syntax of this configuration file,
|
|
# see Documentation/kbuild/kconfig-language.txt.
|
|
#
|
|
|
|
mainmenu "Linux Kernel Configuration"
|
|
|
|
config ARM
|
|
bool
|
|
default y
|
|
|
|
config ARM26
|
|
bool
|
|
default y
|
|
|
|
config MMU
|
|
bool
|
|
default y
|
|
|
|
config ARCH_ACORN
|
|
bool
|
|
default y
|
|
|
|
config CPU_26
|
|
bool
|
|
default y
|
|
|
|
config FIQ
|
|
bool
|
|
default y
|
|
|
|
# 9 = 512 pages 8 = 256 pages 7 = 128 pages
|
|
config FORCE_MAX_ZONEORDER
|
|
int
|
|
default 9
|
|
|
|
config RWSEM_GENERIC_SPINLOCK
|
|
bool
|
|
default y
|
|
|
|
config RWSEM_XCHGADD_ALGORITHM
|
|
bool
|
|
|
|
config ARCH_HAS_ILOG2_U32
|
|
bool
|
|
default n
|
|
|
|
config ARCH_HAS_ILOG2_U64
|
|
bool
|
|
default n
|
|
|
|
config GENERIC_HWEIGHT
|
|
bool
|
|
default y
|
|
|
|
config GENERIC_CALIBRATE_DELAY
|
|
bool
|
|
default y
|
|
|
|
config GENERIC_BUST_SPINLOCK
|
|
bool
|
|
|
|
config ZONE_DMA
|
|
bool
|
|
default y
|
|
|
|
config GENERIC_ISA_DMA
|
|
bool
|
|
|
|
config ARCH_MAY_HAVE_PC_FDC
|
|
bool
|
|
|
|
source "init/Kconfig"
|
|
|
|
|
|
menu "System Type"
|
|
|
|
choice
|
|
prompt "Archimedes/A5000 Implementations"
|
|
|
|
config ARCH_ARC
|
|
bool "Archimedes"
|
|
help
|
|
Say Y to support the Acorn Archimedes.
|
|
|
|
The Acorn Archimedes was an personal computer based on an 8MHz ARM2
|
|
processor, released in 1987. It supported up to 16MB of RAM in
|
|
later models and floppy, harddisc, ethernet etc.
|
|
|
|
config ARCH_A5K
|
|
bool "A5000"
|
|
select ARCH_MAY_HAVE_PC_FDC
|
|
help
|
|
Say Y here to support the Acorn A5000.
|
|
|
|
Linux can support the
|
|
internal IDE disk and CD-ROM interface, serial and parallel port,
|
|
and the floppy drive. Note that on some A5000s the floppy is
|
|
plugged into the wrong socket on the motherboard.
|
|
|
|
config PAGESIZE_16
|
|
bool "2MB physical memory (broken)"
|
|
help
|
|
Say Y here if your Archimedes or A5000 system has only 2MB of
|
|
memory, otherwise say N. The resulting kernel will not run on a
|
|
machine with 4MB of memory.
|
|
endchoice
|
|
endmenu
|
|
|
|
config ISA_DMA_API
|
|
bool
|
|
default y
|
|
|
|
menu "General setup"
|
|
|
|
# Compressed boot loader in ROM. Yes, we really want to ask about
|
|
# TEXT and BSS so we preserve their values in the config files.
|
|
config ZBOOT_ROM
|
|
bool "Compressed boot loader in ROM/flash"
|
|
help
|
|
Say Y here if you intend to execute your compressed kernel image (zImage)
|
|
directly from ROM or flash. If unsure, say N.
|
|
|
|
config ZBOOT_ROM_TEXT
|
|
depends on ZBOOT_ROM
|
|
hex "Compressed ROM boot loader base address"
|
|
default "0"
|
|
help
|
|
The base address for zImage. Unless you have special requirements, you
|
|
should not change this value.
|
|
|
|
config ZBOOT_ROM_BSS
|
|
depends on ZBOOT_ROM
|
|
hex "Compressed ROM boot loader BSS address"
|
|
default "0"
|
|
help
|
|
The base address of 64KiB of read/write memory, which must be available
|
|
while the decompressor is running. Unless you have special requirements,
|
|
you should not change this value.
|
|
|
|
config XIP_KERNEL
|
|
bool "Execute In Place (XIP) kernel image"
|
|
help
|
|
Select this option to create a kernel that can be programmed into
|
|
the OS ROMs.
|
|
|
|
comment "At least one math emulation must be selected"
|
|
|
|
config FPE_NWFPE
|
|
tristate "NWFPE math emulation"
|
|
---help---
|
|
Say Y to include the NWFPE floating point emulator in the kernel.
|
|
This is necessary to run most binaries. Linux does not currently
|
|
support floating point hardware so you need to say Y here even if
|
|
your machine has an FPA or floating point co-processor module.
|
|
|
|
It is also possible to say M to build the emulator as a module
|
|
(nwfpe) or indeed to leave it out altogether. However, unless you
|
|
know what you are doing this can easily render your machine
|
|
unbootable. Saying Y is the safe option.
|
|
|
|
You may say N here if you are going to load the Acorn FPEmulator
|
|
early in the bootup.
|
|
|
|
source "fs/Kconfig.binfmt"
|
|
|
|
config PREEMPT
|
|
bool "Preemptible Kernel (EXPERIMENTAL)"
|
|
depends on CPU_32 && EXPERIMENTAL
|
|
help
|
|
This option reduces the latency of the kernel when reacting to
|
|
real-time or interactive events by allowing a low priority process to
|
|
be preempted even if it is in kernel mode executing a system call.
|
|
This allows applications to run more reliably even when the system is
|
|
under load.
|
|
|
|
Say Y here if you are building a kernel for a desktop, embedded
|
|
or real-time system. Say N if you are unsure.
|
|
|
|
config ARTHUR
|
|
tristate "RISC OS personality"
|
|
depends on CPU_32
|
|
help
|
|
Say Y here to include the kernel code necessary if you want to run
|
|
Acorn RISC OS/Arthur binaries under Linux. This code is still very
|
|
experimental; if this sounds frightening, say N and sleep in peace.
|
|
You can also say M here to compile this support as a module (which
|
|
will be called arthur).
|
|
|
|
config CMDLINE
|
|
string "Default kernel command string"
|
|
default ""
|
|
help
|
|
On some architectures (EBSA110 and CATS), there is currently no way
|
|
for the boot loader to pass arguments to the kernel. For these
|
|
architectures, you should supply some command-line options at build
|
|
time by entering them here. As a minimum, you should specify the
|
|
memory size and the root device (e.g., mem=64M root=/dev/nfs).
|
|
|
|
source "mm/Kconfig"
|
|
|
|
endmenu
|
|
|
|
source "net/Kconfig"
|
|
|
|
source "drivers/base/Kconfig"
|
|
|
|
source "drivers/parport/Kconfig"
|
|
|
|
source "drivers/pnp/Kconfig"
|
|
|
|
source "drivers/block/Kconfig"
|
|
|
|
source "drivers/md/Kconfig"
|
|
|
|
source "drivers/net/Kconfig"
|
|
|
|
source "drivers/ide/Kconfig"
|
|
|
|
source "drivers/scsi/Kconfig"
|
|
|
|
source "drivers/isdn/Kconfig"
|
|
|
|
#
|
|
# input before char - char/joystick depends on it. As does USB.
|
|
#
|
|
source "drivers/input/Kconfig"
|
|
|
|
source "drivers/char/Kconfig"
|
|
|
|
source "drivers/media/Kconfig"
|
|
|
|
source "fs/Kconfig"
|
|
|
|
source "drivers/video/Kconfig"
|
|
|
|
if ARCH_ACORN
|
|
|
|
source "sound/Kconfig"
|
|
|
|
endif
|
|
|
|
source "drivers/misc/Kconfig"
|
|
|
|
source "drivers/usb/Kconfig"
|
|
|
|
source "arch/arm26/Kconfig.debug"
|
|
|
|
source "security/Kconfig"
|
|
|
|
source "crypto/Kconfig"
|
|
|
|
source "lib/Kconfig"
|