forked from Minki/linux
199862892e
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
1216 lines
28 KiB
Plaintext
1216 lines
28 KiB
Plaintext
#
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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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select ARCH_WANT_OPTIONAL_GPIOLIB
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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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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 BF512
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bool "BF512"
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help
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BF512 Processor Support.
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config BF514
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bool "BF514"
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help
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BF514 Processor Support.
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config BF516
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bool "BF516"
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help
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BF516 Processor Support.
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config BF518
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bool "BF518"
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help
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BF518 Processor Support.
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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 BF538
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bool "BF538"
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help
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BF538 Processor Support.
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config BF539
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bool "BF539"
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help
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BF539 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 BF542M
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bool "BF542m"
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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 BF544M
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bool "BF544m"
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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 BF547M
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bool "BF547m"
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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 BF548M
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bool "BF548m"
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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 BF549M
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bool "BF549m"
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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 SMP
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depends on BF561
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bool "Symmetric multi-processing support"
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---help---
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This enables support for systems with more than one CPU,
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like the dual core BF561. If you have a system with only one
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CPU, say N. If you have a system with more than one CPU, say Y.
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If you don't know what to do here, say N.
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config NR_CPUS
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int
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depends on SMP
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default 2 if BF561
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config IRQ_PER_CPU
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bool
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depends on SMP
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default y
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config TICK_SOURCE_SYSTMR0
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bool
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select BFIN_GPTIMERS
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depends on SMP
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default y
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config BF_REV_MIN
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int
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default 0 if (BF51x || BF52x || (BF54x && !BF54xM))
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default 2 if (BF537 || BF536 || BF534)
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default 3 if (BF561 || BF533 || BF532 || BF531 || BF54xM)
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default 4 if (BF538 || BF539)
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config BF_REV_MAX
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int
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default 2 if (BF51x || BF52x || (BF54x && !BF54xM))
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default 3 if (BF537 || BF536 || BF534 || BF54xM)
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default 5 if (BF561 || BF538 || BF539)
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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 (BF51x || BF52x || (BF54x && !BF54xM))
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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 || BF54xM || BF561)
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config BF_REV_0_0
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bool "0.0"
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depends on (BF51x || BF52x || (BF54x && !BF54xM))
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config BF_REV_0_1
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bool "0.1"
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depends on (BF52x || (BF54x && !BF54xM))
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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 && !BF54xM))
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config BF_REV_0_3
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bool "0.3"
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depends on (BF54xM || 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 || BF538 || BF539)
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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 || BF538 || BF539)
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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 BF51x
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bool
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depends on (BF512 || BF514 || BF516 || BF518)
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default y
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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 BF54xM
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bool
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depends on (BF542M || BF544M || BF547M || BF548M || BF549M)
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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 || BF54xM)
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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 || BFIN538_EZKIT)
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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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config MEM_MT48LC32M8A2_75
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bool
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depends on (BFIN518F_EZBRD)
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default y
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source "arch/blackfin/mach-bf518/Kconfig"
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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-bf538/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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depends on ROMKERNEL
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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 || BFIN538_EZKIT || BFIN518F-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 || BFIN538_EZKIT)
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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 || BFIN518F_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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choice
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prompt "DDR/SDRAM Timing"
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depends on BFIN_KERNEL_CLOCK
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default BFIN_KERNEL_CLOCK_MEMINIT_CALC
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help
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This option allows you to specify Blackfin SDRAM/DDR Timing parameters
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The calculated SDRAM timing parameters may not be 100%
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accurate - This option is therefore marked experimental.
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config BFIN_KERNEL_CLOCK_MEMINIT_CALC
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bool "Calculate Timings (EXPERIMENTAL)"
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depends on EXPERIMENTAL
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config BFIN_KERNEL_CLOCK_MEMINIT_SPEC
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bool "Provide accurate Timings based on target SCLK"
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help
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Please consult the Blackfin Hardware Reference Manuals as well
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as the memory device datasheet.
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http://docs.blackfin.uclinux.org/doku.php?id=bfin:sdram
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endchoice
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menu "Memory Init Control"
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depends on BFIN_KERNEL_CLOCK_MEMINIT_SPEC
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config MEM_DDRCTL0
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depends on BF54x
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hex "DDRCTL0"
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default 0x0
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config MEM_DDRCTL1
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depends on BF54x
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hex "DDRCTL1"
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default 0x0
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config MEM_DDRCTL2
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depends on BF54x
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hex "DDRCTL2"
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default 0x0
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config MEM_EBIU_DDRQUE
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depends on BF54x
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hex "DDRQUE"
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default 0x0
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config MEM_SDRRC
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depends on !BF54x
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hex "SDRRC"
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default 0x0
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config MEM_SDGCTL
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depends on !BF54x
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hex "SDGCTL"
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default 0x0
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endmenu
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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 400000000 if BF512
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default 400000000 if BF514
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default 400000000 if BF516
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default 400000000 if BF518
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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
|
|
int
|
|
default 133333333
|
|
|
|
config MIN_SCLK_HZ
|
|
int
|
|
default 27000000
|
|
|
|
comment "Kernel Timer/Scheduler"
|
|
|
|
source kernel/Kconfig.hz
|
|
|
|
config GENERIC_TIME
|
|
bool "Generic time"
|
|
depends on !SMP
|
|
default y
|
|
|
|
config GENERIC_CLOCKEVENTS
|
|
bool "Generic clock events"
|
|
depends on GENERIC_TIME
|
|
default y
|
|
|
|
config CYCLES_CLOCKSOURCE
|
|
bool "Use 'CYCLES' as a clocksource (EXPERIMENTAL)"
|
|
depends on EXPERIMENTAL
|
|
depends on GENERIC_CLOCKEVENTS
|
|
depends on !BFIN_SCRATCH_REG_CYCLES
|
|
default n
|
|
help
|
|
If you say Y here, you will enable support for using the 'cycles'
|
|
registers as a clock source. Doing so means you will be unable to
|
|
safely write to the 'cycles' register during runtime. You will
|
|
still be able to read it (such as for performance monitoring), but
|
|
writing the registers will most likely crash the kernel.
|
|
|
|
source kernel/time/Kconfig
|
|
|
|
comment "Misc"
|
|
|
|
choice
|
|
prompt "Blackfin Exception Scratch Register"
|
|
default BFIN_SCRATCH_REG_RETN
|
|
help
|
|
Select the resource to reserve for the Exception handler:
|
|
- RETN: Non-Maskable Interrupt (NMI)
|
|
- RETE: Exception Return (JTAG/ICE)
|
|
- CYCLES: Performance counter
|
|
|
|
If you are unsure, please select "RETN".
|
|
|
|
config BFIN_SCRATCH_REG_RETN
|
|
bool "RETN"
|
|
help
|
|
Use the RETN register in the Blackfin exception handler
|
|
as a stack scratch register. This means you cannot
|
|
safely use NMI on the Blackfin while running Linux, but
|
|
you can debug the system with a JTAG ICE and use the
|
|
CYCLES performance registers.
|
|
|
|
If you are unsure, please select "RETN".
|
|
|
|
config BFIN_SCRATCH_REG_RETE
|
|
bool "RETE"
|
|
help
|
|
Use the RETE register in the Blackfin exception handler
|
|
as a stack scratch register. This means you cannot
|
|
safely use a JTAG ICE while debugging a Blackfin board,
|
|
but you can safely use the CYCLES performance registers
|
|
and the NMI.
|
|
|
|
If you are unsure, please select "RETN".
|
|
|
|
config BFIN_SCRATCH_REG_CYCLES
|
|
bool "CYCLES"
|
|
help
|
|
Use the CYCLES register in the Blackfin exception handler
|
|
as a stack scratch register. This means you cannot
|
|
safely use the CYCLES performance registers on a Blackfin
|
|
board at anytime, but you can debug the system with a JTAG
|
|
ICE and use the NMI.
|
|
|
|
If you are unsure, please select "RETN".
|
|
|
|
endchoice
|
|
|
|
endmenu
|
|
|
|
|
|
menu "Blackfin Kernel Optimizations"
|
|
depends on !SMP
|
|
|
|
comment "Memory Optimizations"
|
|
|
|
config I_ENTRY_L1
|
|
bool "Locate interrupt entry code in L1 Memory"
|
|
default y
|
|
help
|
|
If enabled, interrupt entry code (STORE/RESTORE CONTEXT) is linked
|
|
into L1 instruction memory. (less latency)
|
|
|
|
config EXCPT_IRQ_SYSC_L1
|
|
bool "Locate entire ASM lowlevel exception / interrupt - Syscall and CPLB handler code in L1 Memory"
|
|
default y
|
|
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.
|
|
|
|
config EXCEPTION_L1_SCRATCH
|
|
bool "Locate exception stack in L1 Scratch Memory"
|
|
default n
|
|
depends on !APP_STACK_L1 && !SYSCALL_TAB_L1
|
|
help
|
|
Whenever an exception occurs, use the L1 Scratch memory for
|
|
stack storage. You cannot place the stacks of FLAT binaries
|
|
in L1 when using this option.
|
|
|
|
If you don't use L1 Scratch, then you should say Y here.
|
|
|
|
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.
|
|
|
|
choice
|
|
prompt "Uncached DMA region"
|
|
default DMA_UNCACHED_1M
|
|
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 if !SMP
|
|
default BFIN_WT if SMP
|
|
config BFIN_WB
|
|
bool "Write back"
|
|
depends on !SMP
|
|
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 && !SMP))
|
|
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"
|
|
depends on PM && !BF54x
|
|
|
|
config PM_WAKEUP_GPIO_NUMBER
|
|
int "GPIO number"
|
|
range 0 47
|
|
depends on PM_WAKEUP_BY_GPIO
|
|
default 2
|
|
|
|
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 && (BF51x || BF52x || BF534 || BF536 || BF537)
|
|
default n
|
|
help
|
|
Enable PHY and PH6 GP Wake-Up (Voltage Regulator Power-Up)
|
|
|
|
config PM_BFIN_WAKE_GP
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bool "Allow Wake-Up from GPIOs"
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depends on PM && BF54x
|
|
default n
|
|
help
|
|
Enable General-Purpose Wake-Up (Voltage Regulator Power-Up)
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|
(all processors, except ADSP-BF549). This option sets
|
|
the general-purpose wake-up enable (GPWE) control bit to enable
|
|
wake-up upon detection of an active low signal on the /GPW (PH7) pin.
|
|
On ADSP-BF549 this option enables the the same functionality on the
|
|
/MRXON pin also PH7.
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|
|
|
endmenu
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|
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menu "CPU Frequency scaling"
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|
|
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source "drivers/cpufreq/Kconfig"
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|
|
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config BFIN_CPU_FREQ
|
|
bool
|
|
depends on CPU_FREQ
|
|
select CPU_FREQ_TABLE
|
|
default y
|
|
|
|
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.
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|
|
|
endmenu
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|
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source "net/Kconfig"
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|
|
|
source "drivers/Kconfig"
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|
|
|
source "fs/Kconfig"
|
|
|
|
source "arch/blackfin/Kconfig.debug"
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|
|
|
source "security/Kconfig"
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|
|
|
source "crypto/Kconfig"
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|
|
|
source "lib/Kconfig"
|