![Matt Helsley](/assets/img/avatar_default.png)
This patch implements a new freezer subsystem in the control groups framework. It provides a way to stop and resume execution of all tasks in a cgroup by writing in the cgroup filesystem. The freezer subsystem in the container filesystem defines a file named freezer.state. Writing "FROZEN" to the state file will freeze all tasks in the cgroup. Subsequently writing "RUNNING" will unfreeze the tasks in the cgroup. Reading will return the current state. * Examples of usage : # mkdir /containers/freezer # mount -t cgroup -ofreezer freezer /containers # mkdir /containers/0 # echo $some_pid > /containers/0/tasks to get status of the freezer subsystem : # cat /containers/0/freezer.state RUNNING to freeze all tasks in the container : # echo FROZEN > /containers/0/freezer.state # cat /containers/0/freezer.state FREEZING # cat /containers/0/freezer.state FROZEN to unfreeze all tasks in the container : # echo RUNNING > /containers/0/freezer.state # cat /containers/0/freezer.state RUNNING This is the basic mechanism which should do the right thing for user space task in a simple scenario. It's important to note that freezing can be incomplete. In that case we return EBUSY. This means that some tasks in the cgroup are busy doing something that prevents us from completely freezing the cgroup at this time. After EBUSY, the cgroup will remain partially frozen -- reflected by freezer.state reporting "FREEZING" when read. The state will remain "FREEZING" until one of these things happens: 1) Userspace cancels the freezing operation by writing "RUNNING" to the freezer.state file 2) Userspace retries the freezing operation by writing "FROZEN" to the freezer.state file (writing "FREEZING" is not legal and returns EIO) 3) The tasks that blocked the cgroup from entering the "FROZEN" state disappear from the cgroup's set of tasks. [akpm@linux-foundation.org: coding-style fixes] [akpm@linux-foundation.org: export thaw_process] Signed-off-by: Cedric Le Goater <clg@fr.ibm.com> Signed-off-by: Matt Helsley <matthltc@us.ibm.com> Acked-by: Serge E. Hallyn <serue@us.ibm.com> Tested-by: Matt Helsley <matthltc@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1049 lines
24 KiB
Text
1049 lines
24 KiB
Text
#
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# For a description of the syntax of this configuration file,
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# see Documentation/kbuild/kconfig-language.txt.
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#
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mainmenu "Blackfin Kernel Configuration"
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config MMU
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bool
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default n
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config FPU
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bool
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default n
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config RWSEM_GENERIC_SPINLOCK
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bool
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default y
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config RWSEM_XCHGADD_ALGORITHM
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bool
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default n
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config BLACKFIN
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bool
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default y
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select HAVE_IDE
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select HAVE_OPROFILE
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config ZONE_DMA
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bool
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default y
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config GENERIC_FIND_NEXT_BIT
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bool
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default y
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config GENERIC_HWEIGHT
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bool
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default y
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config GENERIC_HARDIRQS
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bool
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default y
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config GENERIC_IRQ_PROBE
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bool
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default y
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config GENERIC_GPIO
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bool
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default y
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config FORCE_MAX_ZONEORDER
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int
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default "14"
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config GENERIC_CALIBRATE_DELAY
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bool
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default y
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config HARDWARE_PM
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def_bool y
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depends on OPROFILE
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source "init/Kconfig"
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source "kernel/Kconfig.preempt"
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source "kernel/Kconfig.freezer"
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menu "Blackfin Processor Options"
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comment "Processor and Board Settings"
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choice
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prompt "CPU"
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default BF533
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config BF522
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bool "BF522"
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help
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BF522 Processor Support.
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config BF523
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bool "BF523"
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help
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BF523 Processor Support.
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config BF524
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bool "BF524"
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help
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BF524 Processor Support.
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config BF525
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bool "BF525"
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help
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BF525 Processor Support.
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config BF526
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bool "BF526"
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help
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BF526 Processor Support.
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config BF527
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bool "BF527"
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help
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BF527 Processor Support.
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config BF531
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bool "BF531"
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help
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BF531 Processor Support.
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config BF532
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bool "BF532"
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help
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BF532 Processor Support.
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config BF533
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bool "BF533"
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help
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BF533 Processor Support.
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config BF534
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bool "BF534"
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help
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BF534 Processor Support.
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config BF536
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bool "BF536"
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help
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BF536 Processor Support.
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config BF537
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bool "BF537"
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help
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BF537 Processor Support.
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config BF542
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bool "BF542"
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help
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BF542 Processor Support.
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config BF544
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bool "BF544"
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help
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BF544 Processor Support.
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config BF547
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bool "BF547"
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help
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BF547 Processor Support.
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config BF548
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bool "BF548"
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help
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BF548 Processor Support.
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config BF549
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bool "BF549"
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help
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BF549 Processor Support.
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config BF561
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bool "BF561"
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help
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BF561 Processor Support.
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endchoice
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config BF_REV_MIN
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int
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default 0 if (BF52x || BF54x)
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default 2 if (BF537 || BF536 || BF534)
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default 3 if (BF561 ||BF533 || BF532 || BF531)
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config BF_REV_MAX
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int
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default 2 if (BF52x || BF54x)
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default 3 if (BF537 || BF536 || BF534)
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default 5 if (BF561)
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default 6 if (BF533 || BF532 || BF531)
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choice
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prompt "Silicon Rev"
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default BF_REV_0_1 if (BF52x || BF54x)
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default BF_REV_0_2 if (BF534 || BF536 || BF537)
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default BF_REV_0_3 if (BF531 || BF532 || BF533 || BF561)
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config BF_REV_0_0
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bool "0.0"
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depends on (BF52x || BF54x)
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config BF_REV_0_1
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bool "0.1"
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depends on (BF52x || BF54x)
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config BF_REV_0_2
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bool "0.2"
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depends on (BF52x || BF537 || BF536 || BF534 || BF54x)
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config BF_REV_0_3
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bool "0.3"
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depends on (BF561 || BF537 || BF536 || BF534 || BF533 || BF532 || BF531)
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config BF_REV_0_4
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bool "0.4"
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depends on (BF561 || BF533 || BF532 || BF531)
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config BF_REV_0_5
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bool "0.5"
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depends on (BF561 || BF533 || BF532 || BF531)
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config BF_REV_0_6
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bool "0.6"
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depends on (BF533 || BF532 || BF531)
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config BF_REV_ANY
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bool "any"
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config BF_REV_NONE
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bool "none"
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endchoice
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config BF52x
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bool
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depends on (BF522 || BF523 || BF524 || BF525 || BF526 || BF527)
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default y
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config BF53x
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bool
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depends on (BF531 || BF532 || BF533 || BF534 || BF536 || BF537)
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default y
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config BF54x
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bool
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depends on (BF542 || BF544 || BF547 || BF548 || BF549)
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default y
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config MEM_GENERIC_BOARD
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bool
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depends on GENERIC_BOARD
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default y
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config MEM_MT48LC64M4A2FB_7E
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bool
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depends on (BFIN533_STAMP)
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default y
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config MEM_MT48LC16M16A2TG_75
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bool
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depends on (BFIN533_EZKIT || BFIN561_EZKIT \
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|| BFIN533_BLUETECHNIX_CM || BFIN537_BLUETECHNIX_CM \
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|| H8606_HVSISTEMAS || BFIN527_BLUETECHNIX_CM)
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default y
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config MEM_MT48LC32M8A2_75
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bool
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depends on (BFIN537_STAMP || PNAV10)
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default y
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config MEM_MT48LC8M32B2B5_7
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bool
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depends on (BFIN561_BLUETECHNIX_CM)
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default y
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config MEM_MT48LC32M16A2TG_75
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bool
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depends on (BFIN527_EZKIT || BFIN532_IP0X || BLACKSTAMP || BFIN526_EZBRD)
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default y
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source "arch/blackfin/mach-bf527/Kconfig"
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source "arch/blackfin/mach-bf533/Kconfig"
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source "arch/blackfin/mach-bf561/Kconfig"
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source "arch/blackfin/mach-bf537/Kconfig"
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source "arch/blackfin/mach-bf548/Kconfig"
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menu "Board customizations"
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config CMDLINE_BOOL
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bool "Default bootloader kernel arguments"
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config CMDLINE
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string "Initial kernel command string"
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depends on CMDLINE_BOOL
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default "console=ttyBF0,57600"
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help
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If you don't have a boot loader capable of passing a command line string
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to the kernel, you may specify one here. As a minimum, you should specify
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the memory size and the root device (e.g., mem=8M, root=/dev/nfs).
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config BOOT_LOAD
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hex "Kernel load address for booting"
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default "0x1000"
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range 0x1000 0x20000000
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help
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This option allows you to set the load address of the kernel.
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This can be useful if you are on a board which has a small amount
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of memory or you wish to reserve some memory at the beginning of
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the address space.
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Note that you need to keep this value above 4k (0x1000) as this
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memory region is used to capture NULL pointer references as well
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as some core kernel functions.
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config ROM_BASE
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hex "Kernel ROM Base"
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default "0x20040000"
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range 0x20000000 0x20400000 if !(BF54x || BF561)
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range 0x20000000 0x30000000 if (BF54x || BF561)
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help
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comment "Clock/PLL Setup"
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config CLKIN_HZ
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int "Frequency of the crystal on the board in Hz"
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default "11059200" if BFIN533_STAMP
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default "27000000" if BFIN533_EZKIT
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default "25000000" if (BFIN537_STAMP || BFIN527_EZKIT || H8606_HVSISTEMAS || BLACKSTAMP || BFIN526_EZBRD)
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default "30000000" if BFIN561_EZKIT
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default "24576000" if PNAV10
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default "10000000" if BFIN532_IP0X
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help
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The frequency of CLKIN crystal oscillator on the board in Hz.
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Warning: This value should match the crystal on the board. Otherwise,
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peripherals won't work properly.
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config BFIN_KERNEL_CLOCK
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bool "Re-program Clocks while Kernel boots?"
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default n
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help
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This option decides if kernel clocks are re-programed from the
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bootloader settings. If the clocks are not set, the SDRAM settings
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are also not changed, and the Bootloader does 100% of the hardware
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configuration.
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config PLL_BYPASS
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bool "Bypass PLL"
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depends on BFIN_KERNEL_CLOCK
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default n
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config CLKIN_HALF
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bool "Half Clock In"
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depends on BFIN_KERNEL_CLOCK && (! PLL_BYPASS)
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default n
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help
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If this is set the clock will be divided by 2, before it goes to the PLL.
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config VCO_MULT
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int "VCO Multiplier"
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depends on BFIN_KERNEL_CLOCK && (! PLL_BYPASS)
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range 1 64
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default "22" if BFIN533_EZKIT
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default "45" if BFIN533_STAMP
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default "20" if (BFIN537_STAMP || BFIN527_EZKIT || BFIN548_EZKIT || BFIN548_BLUETECHNIX_CM)
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default "22" if BFIN533_BLUETECHNIX_CM
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default "20" if (BFIN537_BLUETECHNIX_CM || BFIN527_BLUETECHNIX_CM || BFIN561_BLUETECHNIX_CM)
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default "20" if BFIN561_EZKIT
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default "16" if (H8606_HVSISTEMAS || BLACKSTAMP || BFIN526_EZBRD)
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help
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This controls the frequency of the on-chip PLL. This can be between 1 and 64.
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PLL Frequency = (Crystal Frequency) * (this setting)
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choice
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prompt "Core Clock Divider"
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depends on BFIN_KERNEL_CLOCK
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default CCLK_DIV_1
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help
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This sets the frequency of the core. It can be 1, 2, 4 or 8
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Core Frequency = (PLL frequency) / (this setting)
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config CCLK_DIV_1
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bool "1"
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config CCLK_DIV_2
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bool "2"
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config CCLK_DIV_4
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bool "4"
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config CCLK_DIV_8
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bool "8"
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endchoice
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config SCLK_DIV
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int "System Clock Divider"
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depends on BFIN_KERNEL_CLOCK
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range 1 15
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default 5
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help
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This sets the frequency of the system clock (including SDRAM or DDR).
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This can be between 1 and 15
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System Clock = (PLL frequency) / (this setting)
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choice
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prompt "DDR SDRAM Chip Type"
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depends on BFIN_KERNEL_CLOCK
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depends on BF54x
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default MEM_MT46V32M16_5B
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config MEM_MT46V32M16_6T
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bool "MT46V32M16_6T"
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config MEM_MT46V32M16_5B
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bool "MT46V32M16_5B"
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endchoice
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config MAX_MEM_SIZE
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int "Max SDRAM Memory Size in MBytes"
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depends on !MPU
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default 512
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help
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This is the max memory size that the kernel will create CPLB
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tables for. Your system will not be able to handle any more.
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#
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# Max & Min Speeds for various Chips
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#
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config MAX_VCO_HZ
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int
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default 600000000 if BF522
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default 400000000 if BF523
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default 400000000 if BF524
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default 600000000 if BF525
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default 400000000 if BF526
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default 600000000 if BF527
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default 400000000 if BF531
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default 400000000 if BF532
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default 750000000 if BF533
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default 500000000 if BF534
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default 400000000 if BF536
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default 600000000 if BF537
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default 533333333 if BF538
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default 533333333 if BF539
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default 600000000 if BF542
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default 533333333 if BF544
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default 600000000 if BF547
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default 600000000 if BF548
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default 533333333 if BF549
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default 600000000 if BF561
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config MIN_VCO_HZ
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int
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default 50000000
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config MAX_SCLK_HZ
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int
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default 133333333
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config MIN_SCLK_HZ
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int
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default 27000000
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comment "Kernel Timer/Scheduler"
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source kernel/Kconfig.hz
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config GENERIC_TIME
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bool "Generic time"
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default y
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config GENERIC_CLOCKEVENTS
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bool "Generic clock events"
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depends on GENERIC_TIME
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default y
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config CYCLES_CLOCKSOURCE
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bool "Use 'CYCLES' as a clocksource (EXPERIMENTAL)"
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depends on EXPERIMENTAL
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depends on GENERIC_CLOCKEVENTS
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depends on !BFIN_SCRATCH_REG_CYCLES
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default n
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help
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If you say Y here, you will enable support for using the 'cycles'
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registers as a clock source. Doing so means you will be unable to
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safely write to the 'cycles' register during runtime. You will
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still be able to read it (such as for performance monitoring), but
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writing the registers will most likely crash the kernel.
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source kernel/time/Kconfig
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comment "Misc"
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choice
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prompt "Blackfin Exception Scratch Register"
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default BFIN_SCRATCH_REG_RETN
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help
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Select the resource to reserve for the Exception handler:
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- RETN: Non-Maskable Interrupt (NMI)
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- RETE: Exception Return (JTAG/ICE)
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- CYCLES: Performance counter
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If you are unsure, please select "RETN".
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config BFIN_SCRATCH_REG_RETN
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bool "RETN"
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help
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Use the RETN register in the Blackfin exception handler
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as a stack scratch register. This means you cannot
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safely use NMI on the Blackfin while running Linux, but
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you can debug the system with a JTAG ICE and use the
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CYCLES performance registers.
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If you are unsure, please select "RETN".
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config BFIN_SCRATCH_REG_RETE
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bool "RETE"
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help
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Use the RETE register in the Blackfin exception handler
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as a stack scratch register. This means you cannot
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safely use a JTAG ICE while debugging a Blackfin board,
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but you can safely use the CYCLES performance registers
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and the NMI.
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If you are unsure, please select "RETN".
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config BFIN_SCRATCH_REG_CYCLES
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bool "CYCLES"
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help
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Use the CYCLES register in the Blackfin exception handler
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as a stack scratch register. This means you cannot
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safely use the CYCLES performance registers on a Blackfin
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board at anytime, but you can debug the system with a JTAG
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ICE and use the NMI.
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If you are unsure, please select "RETN".
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endchoice
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endmenu
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menu "Blackfin Kernel Optimizations"
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comment "Memory Optimizations"
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config I_ENTRY_L1
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bool "Locate interrupt entry code in L1 Memory"
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default y
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help
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If enabled, interrupt entry code (STORE/RESTORE CONTEXT) is linked
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into L1 instruction memory. (less latency)
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config EXCPT_IRQ_SYSC_L1
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bool "Locate entire ASM lowlevel exception / interrupt - Syscall and CPLB handler code in L1 Memory"
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default y
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help
|
|
If enabled, the entire ASM lowlevel exception and interrupt entry code
|
|
(STORE/RESTORE CONTEXT) is linked into L1 instruction memory.
|
|
(less latency)
|
|
|
|
config DO_IRQ_L1
|
|
bool "Locate frequently called do_irq dispatcher function in L1 Memory"
|
|
default y
|
|
help
|
|
If enabled, the frequently called do_irq dispatcher function is linked
|
|
into L1 instruction memory. (less latency)
|
|
|
|
config CORE_TIMER_IRQ_L1
|
|
bool "Locate frequently called timer_interrupt() function in L1 Memory"
|
|
default y
|
|
help
|
|
If enabled, the frequently called timer_interrupt() function is linked
|
|
into L1 instruction memory. (less latency)
|
|
|
|
config IDLE_L1
|
|
bool "Locate frequently idle function in L1 Memory"
|
|
default y
|
|
help
|
|
If enabled, the frequently called idle function is linked
|
|
into L1 instruction memory. (less latency)
|
|
|
|
config SCHEDULE_L1
|
|
bool "Locate kernel schedule function in L1 Memory"
|
|
default y
|
|
help
|
|
If enabled, the frequently called kernel schedule is linked
|
|
into L1 instruction memory. (less latency)
|
|
|
|
config ARITHMETIC_OPS_L1
|
|
bool "Locate kernel owned arithmetic functions in L1 Memory"
|
|
default y
|
|
help
|
|
If enabled, arithmetic functions are linked
|
|
into L1 instruction memory. (less latency)
|
|
|
|
config ACCESS_OK_L1
|
|
bool "Locate access_ok function in L1 Memory"
|
|
default y
|
|
help
|
|
If enabled, the access_ok function is linked
|
|
into L1 instruction memory. (less latency)
|
|
|
|
config MEMSET_L1
|
|
bool "Locate memset function in L1 Memory"
|
|
default y
|
|
help
|
|
If enabled, the memset function is linked
|
|
into L1 instruction memory. (less latency)
|
|
|
|
config MEMCPY_L1
|
|
bool "Locate memcpy function in L1 Memory"
|
|
default y
|
|
help
|
|
If enabled, the memcpy function is linked
|
|
into L1 instruction memory. (less latency)
|
|
|
|
config SYS_BFIN_SPINLOCK_L1
|
|
bool "Locate sys_bfin_spinlock function in L1 Memory"
|
|
default y
|
|
help
|
|
If enabled, sys_bfin_spinlock function is linked
|
|
into L1 instruction memory. (less latency)
|
|
|
|
config IP_CHECKSUM_L1
|
|
bool "Locate IP Checksum function in L1 Memory"
|
|
default n
|
|
help
|
|
If enabled, the IP Checksum function is linked
|
|
into L1 instruction memory. (less latency)
|
|
|
|
config CACHELINE_ALIGNED_L1
|
|
bool "Locate cacheline_aligned data to L1 Data Memory"
|
|
default y if !BF54x
|
|
default n if BF54x
|
|
depends on !BF531
|
|
help
|
|
If enabled, cacheline_anligned data is linked
|
|
into L1 data memory. (less latency)
|
|
|
|
config SYSCALL_TAB_L1
|
|
bool "Locate Syscall Table L1 Data Memory"
|
|
default n
|
|
depends on !BF531
|
|
help
|
|
If enabled, the Syscall LUT is linked
|
|
into L1 data memory. (less latency)
|
|
|
|
config CPLB_SWITCH_TAB_L1
|
|
bool "Locate CPLB Switch Tables L1 Data Memory"
|
|
default n
|
|
depends on !BF531
|
|
help
|
|
If enabled, the CPLB Switch Tables are linked
|
|
into L1 data memory. (less latency)
|
|
|
|
config APP_STACK_L1
|
|
bool "Support locating application stack in L1 Scratch Memory"
|
|
default y
|
|
help
|
|
If enabled the application stack can be located in L1
|
|
scratch memory (less latency).
|
|
|
|
Currently only works with FLAT binaries.
|
|
|
|
comment "Speed Optimizations"
|
|
config BFIN_INS_LOWOVERHEAD
|
|
bool "ins[bwl] low overhead, higher interrupt latency"
|
|
default y
|
|
help
|
|
Reads on the Blackfin are speculative. In Blackfin terms, this means
|
|
they can be interrupted at any time (even after they have been issued
|
|
on to the external bus), and re-issued after the interrupt occurs.
|
|
For memory - this is not a big deal, since memory does not change if
|
|
it sees a read.
|
|
|
|
If a FIFO is sitting on the end of the read, it will see two reads,
|
|
when the core only sees one since the FIFO receives both the read
|
|
which is cancelled (and not delivered to the core) and the one which
|
|
is re-issued (which is delivered to the core).
|
|
|
|
To solve this, interrupts are turned off before reads occur to
|
|
I/O space. This option controls which the overhead/latency of
|
|
controlling interrupts during this time
|
|
"n" turns interrupts off every read
|
|
(higher overhead, but lower interrupt latency)
|
|
"y" turns interrupts off every loop
|
|
(low overhead, but longer interrupt latency)
|
|
|
|
default behavior is to leave this set to on (type "Y"). If you are experiencing
|
|
interrupt latency issues, it is safe and OK to turn this off.
|
|
|
|
endmenu
|
|
|
|
|
|
choice
|
|
prompt "Kernel executes from"
|
|
help
|
|
Choose the memory type that the kernel will be running in.
|
|
|
|
config RAMKERNEL
|
|
bool "RAM"
|
|
help
|
|
The kernel will be resident in RAM when running.
|
|
|
|
config ROMKERNEL
|
|
bool "ROM"
|
|
help
|
|
The kernel will be resident in FLASH/ROM when running.
|
|
|
|
endchoice
|
|
|
|
source "mm/Kconfig"
|
|
|
|
config BFIN_GPTIMERS
|
|
tristate "Enable Blackfin General Purpose Timers API"
|
|
default n
|
|
help
|
|
Enable support for the General Purpose Timers API. If you
|
|
are unsure, say N.
|
|
|
|
To compile this driver as a module, choose M here: the module
|
|
will be called gptimers.ko.
|
|
|
|
config BFIN_DMA_5XX
|
|
bool "Enable DMA Support"
|
|
depends on (BF52x || BF53x || BF561 || BF54x)
|
|
default y
|
|
help
|
|
DMA driver for BF5xx.
|
|
|
|
choice
|
|
prompt "Uncached SDRAM region"
|
|
default DMA_UNCACHED_1M
|
|
depends on BFIN_DMA_5XX
|
|
config DMA_UNCACHED_4M
|
|
bool "Enable 4M DMA region"
|
|
config DMA_UNCACHED_2M
|
|
bool "Enable 2M DMA region"
|
|
config DMA_UNCACHED_1M
|
|
bool "Enable 1M DMA region"
|
|
config DMA_UNCACHED_NONE
|
|
bool "Disable DMA region"
|
|
endchoice
|
|
|
|
|
|
comment "Cache Support"
|
|
config BFIN_ICACHE
|
|
bool "Enable ICACHE"
|
|
config BFIN_DCACHE
|
|
bool "Enable DCACHE"
|
|
config BFIN_DCACHE_BANKA
|
|
bool "Enable only 16k BankA DCACHE - BankB is SRAM"
|
|
depends on BFIN_DCACHE && !BF531
|
|
default n
|
|
config BFIN_ICACHE_LOCK
|
|
bool "Enable Instruction Cache Locking"
|
|
|
|
choice
|
|
prompt "Policy"
|
|
depends on BFIN_DCACHE
|
|
default BFIN_WB
|
|
config BFIN_WB
|
|
bool "Write back"
|
|
help
|
|
Write Back Policy:
|
|
Cached data will be written back to SDRAM only when needed.
|
|
This can give a nice increase in performance, but beware of
|
|
broken drivers that do not properly invalidate/flush their
|
|
cache.
|
|
|
|
Write Through Policy:
|
|
Cached data will always be written back to SDRAM when the
|
|
cache is updated. This is a completely safe setting, but
|
|
performance is worse than Write Back.
|
|
|
|
If you are unsure of the options and you want to be safe,
|
|
then go with Write Through.
|
|
|
|
config BFIN_WT
|
|
bool "Write through"
|
|
help
|
|
Write Back Policy:
|
|
Cached data will be written back to SDRAM only when needed.
|
|
This can give a nice increase in performance, but beware of
|
|
broken drivers that do not properly invalidate/flush their
|
|
cache.
|
|
|
|
Write Through Policy:
|
|
Cached data will always be written back to SDRAM when the
|
|
cache is updated. This is a completely safe setting, but
|
|
performance is worse than Write Back.
|
|
|
|
If you are unsure of the options and you want to be safe,
|
|
then go with Write Through.
|
|
|
|
endchoice
|
|
|
|
config BFIN_L2_CACHEABLE
|
|
bool "Cache L2 SRAM"
|
|
depends on (BFIN_DCACHE || BFIN_ICACHE) && (BF54x || BF561)
|
|
default n
|
|
help
|
|
Select to make L2 SRAM cacheable in L1 data and instruction cache.
|
|
|
|
config MPU
|
|
bool "Enable the memory protection unit (EXPERIMENTAL)"
|
|
default n
|
|
help
|
|
Use the processor's MPU to protect applications from accessing
|
|
memory they do not own. This comes at a performance penalty
|
|
and is recommended only for debugging.
|
|
|
|
comment "Asynchonous Memory Configuration"
|
|
|
|
menu "EBIU_AMGCTL Global Control"
|
|
config C_AMCKEN
|
|
bool "Enable CLKOUT"
|
|
default y
|
|
|
|
config C_CDPRIO
|
|
bool "DMA has priority over core for ext. accesses"
|
|
default n
|
|
|
|
config C_B0PEN
|
|
depends on BF561
|
|
bool "Bank 0 16 bit packing enable"
|
|
default y
|
|
|
|
config C_B1PEN
|
|
depends on BF561
|
|
bool "Bank 1 16 bit packing enable"
|
|
default y
|
|
|
|
config C_B2PEN
|
|
depends on BF561
|
|
bool "Bank 2 16 bit packing enable"
|
|
default y
|
|
|
|
config C_B3PEN
|
|
depends on BF561
|
|
bool "Bank 3 16 bit packing enable"
|
|
default n
|
|
|
|
choice
|
|
prompt"Enable Asynchonous Memory Banks"
|
|
default C_AMBEN_ALL
|
|
|
|
config C_AMBEN
|
|
bool "Disable All Banks"
|
|
|
|
config C_AMBEN_B0
|
|
bool "Enable Bank 0"
|
|
|
|
config C_AMBEN_B0_B1
|
|
bool "Enable Bank 0 & 1"
|
|
|
|
config C_AMBEN_B0_B1_B2
|
|
bool "Enable Bank 0 & 1 & 2"
|
|
|
|
config C_AMBEN_ALL
|
|
bool "Enable All Banks"
|
|
endchoice
|
|
endmenu
|
|
|
|
menu "EBIU_AMBCTL Control"
|
|
config BANK_0
|
|
hex "Bank 0"
|
|
default 0x7BB0
|
|
|
|
config BANK_1
|
|
hex "Bank 1"
|
|
default 0x7BB0
|
|
default 0x5558 if BF54x
|
|
|
|
config BANK_2
|
|
hex "Bank 2"
|
|
default 0x7BB0
|
|
|
|
config BANK_3
|
|
hex "Bank 3"
|
|
default 0x99B3
|
|
endmenu
|
|
|
|
config EBIU_MBSCTLVAL
|
|
hex "EBIU Bank Select Control Register"
|
|
depends on BF54x
|
|
default 0
|
|
|
|
config EBIU_MODEVAL
|
|
hex "Flash Memory Mode Control Register"
|
|
depends on BF54x
|
|
default 1
|
|
|
|
config EBIU_FCTLVAL
|
|
hex "Flash Memory Bank Control Register"
|
|
depends on BF54x
|
|
default 6
|
|
endmenu
|
|
|
|
#############################################################################
|
|
menu "Bus options (PCI, PCMCIA, EISA, MCA, ISA)"
|
|
|
|
config PCI
|
|
bool "PCI support"
|
|
depends on BROKEN
|
|
help
|
|
Support for PCI bus.
|
|
|
|
source "drivers/pci/Kconfig"
|
|
|
|
config HOTPLUG
|
|
bool "Support for hot-pluggable device"
|
|
help
|
|
Say Y here if you want to plug devices into your computer while
|
|
the system is running, and be able to use them quickly. In many
|
|
cases, the devices can likewise be unplugged at any time too.
|
|
|
|
One well known example of this is PCMCIA- or PC-cards, credit-card
|
|
size devices such as network cards, modems or hard drives which are
|
|
plugged into slots found on all modern laptop computers. Another
|
|
example, used on modern desktops as well as laptops, is USB.
|
|
|
|
Enable HOTPLUG and build a modular kernel. Get agent software
|
|
(from <http://linux-hotplug.sourceforge.net/>) and install it.
|
|
Then your kernel will automatically call out to a user mode "policy
|
|
agent" (/sbin/hotplug) to load modules and set up software needed
|
|
to use devices as you hotplug them.
|
|
|
|
source "drivers/pcmcia/Kconfig"
|
|
|
|
source "drivers/pci/hotplug/Kconfig"
|
|
|
|
endmenu
|
|
|
|
menu "Executable file formats"
|
|
|
|
source "fs/Kconfig.binfmt"
|
|
|
|
endmenu
|
|
|
|
menu "Power management options"
|
|
source "kernel/power/Kconfig"
|
|
|
|
config ARCH_SUSPEND_POSSIBLE
|
|
def_bool y
|
|
depends on !SMP
|
|
|
|
choice
|
|
prompt "Standby Power Saving Mode"
|
|
depends on PM
|
|
default PM_BFIN_SLEEP_DEEPER
|
|
config PM_BFIN_SLEEP_DEEPER
|
|
bool "Sleep Deeper"
|
|
help
|
|
Sleep "Deeper" Mode (High Power Savings) - This mode reduces dynamic
|
|
power dissipation by disabling the clock to the processor core (CCLK).
|
|
Furthermore, Standby sets the internal power supply voltage (VDDINT)
|
|
to 0.85 V to provide the greatest power savings, while preserving the
|
|
processor state.
|
|
The PLL and system clock (SCLK) continue to operate at a very low
|
|
frequency of about 3.3 MHz. To preserve data integrity in the SDRAM,
|
|
the SDRAM is put into Self Refresh Mode. Typically an external event
|
|
such as GPIO interrupt or RTC activity wakes up the processor.
|
|
Various Peripherals such as UART, SPORT, PPI may not function as
|
|
normal during Sleep Deeper, due to the reduced SCLK frequency.
|
|
When in the sleep mode, system DMA access to L1 memory is not supported.
|
|
|
|
If unsure, select "Sleep Deeper".
|
|
|
|
config PM_BFIN_SLEEP
|
|
bool "Sleep"
|
|
help
|
|
Sleep Mode (High Power Savings) - The sleep mode reduces power
|
|
dissipation by disabling the clock to the processor core (CCLK).
|
|
The PLL and system clock (SCLK), however, continue to operate in
|
|
this mode. Typically an external event or RTC activity will wake
|
|
up the processor. When in the sleep mode, system DMA access to L1
|
|
memory is not supported.
|
|
|
|
If unsure, select "Sleep Deeper".
|
|
endchoice
|
|
|
|
config PM_WAKEUP_BY_GPIO
|
|
bool "Allow Wakeup from Standby by GPIO"
|
|
|
|
config PM_WAKEUP_GPIO_NUMBER
|
|
int "GPIO number"
|
|
range 0 47
|
|
depends on PM_WAKEUP_BY_GPIO
|
|
default 2 if BFIN537_STAMP
|
|
|
|
choice
|
|
prompt "GPIO Polarity"
|
|
depends on PM_WAKEUP_BY_GPIO
|
|
default PM_WAKEUP_GPIO_POLAR_H
|
|
config PM_WAKEUP_GPIO_POLAR_H
|
|
bool "Active High"
|
|
config PM_WAKEUP_GPIO_POLAR_L
|
|
bool "Active Low"
|
|
config PM_WAKEUP_GPIO_POLAR_EDGE_F
|
|
bool "Falling EDGE"
|
|
config PM_WAKEUP_GPIO_POLAR_EDGE_R
|
|
bool "Rising EDGE"
|
|
config PM_WAKEUP_GPIO_POLAR_EDGE_B
|
|
bool "Both EDGE"
|
|
endchoice
|
|
|
|
comment "Possible Suspend Mem / Hibernate Wake-Up Sources"
|
|
depends on PM
|
|
|
|
config PM_BFIN_WAKE_PH6
|
|
bool "Allow Wake-Up from on-chip PHY or PH6 GP"
|
|
depends on PM && (BF52x || BF534 || BF536 || BF537)
|
|
default n
|
|
help
|
|
Enable PHY and PH6 GP Wake-Up (Voltage Regulator Power-Up)
|
|
|
|
config PM_BFIN_WAKE_GP
|
|
bool "Allow Wake-Up from GPIOs"
|
|
depends on PM && BF54x
|
|
default n
|
|
help
|
|
Enable General-Purpose Wake-Up (Voltage Regulator Power-Up)
|
|
endmenu
|
|
|
|
menu "CPU Frequency scaling"
|
|
|
|
source "drivers/cpufreq/Kconfig"
|
|
|
|
config CPU_VOLTAGE
|
|
bool "CPU Voltage scaling"
|
|
depends on EXPERIMENTAL
|
|
depends on CPU_FREQ
|
|
default n
|
|
help
|
|
Say Y here if you want CPU voltage scaling according to the CPU frequency.
|
|
This option violates the PLL BYPASS recommendation in the Blackfin Processor
|
|
manuals. There is a theoretical risk that during VDDINT transitions
|
|
the PLL may unlock.
|
|
|
|
endmenu
|
|
|
|
source "net/Kconfig"
|
|
|
|
source "drivers/Kconfig"
|
|
|
|
source "fs/Kconfig"
|
|
|
|
source "arch/blackfin/Kconfig.debug"
|
|
|
|
source "security/Kconfig"
|
|
|
|
source "crypto/Kconfig"
|
|
|
|
source "lib/Kconfig"
|