mirror of https://gitee.com/openkylin/linux.git
102 lines
2.9 KiB
Plaintext
102 lines
2.9 KiB
Plaintext
if CPU_CAVIUM_OCTEON
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config CAVIUM_CN63XXP1
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bool "Enable CN63XXP1 errata worarounds"
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default "n"
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help
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The CN63XXP1 chip requires build time workarounds to
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function reliably, select this option to enable them. These
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workarounds will cause a slight decrease in performance on
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non-CN63XXP1 hardware, so it is recommended to select "n"
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unless it is known the workarounds are needed.
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config CAVIUM_OCTEON_2ND_KERNEL
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bool "Build the kernel to be used as a 2nd kernel on the same chip"
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default "n"
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help
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This option configures this kernel to be linked at a different
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address and use the 2nd uart for output. This allows a kernel built
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with this option to be run at the same time as one built without this
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option.
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config CAVIUM_OCTEON_HW_FIX_UNALIGNED
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bool "Enable hardware fixups of unaligned loads and stores"
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default "y"
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help
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Configure the Octeon hardware to automatically fix unaligned loads
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and stores. Normally unaligned accesses are fixed using a kernel
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exception handler. This option enables the hardware automatic fixups,
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which requires only an extra 3 cycles. Disable this option if you
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are running code that relies on address exceptions on unaligned
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accesses.
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config CAVIUM_OCTEON_CVMSEG_SIZE
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int "Number of L1 cache lines reserved for CVMSEG memory"
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range 0 54
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default 1
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help
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CVMSEG LM is a segment that accesses portions of the dcache as a
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local memory; the larger CVMSEG is, the smaller the cache is.
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This selects the size of CVMSEG LM, which is in cache blocks. The
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legally range is from zero to 54 cache blocks (i.e. CVMSEG LM is
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between zero and 6192 bytes).
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config CAVIUM_OCTEON_LOCK_L2
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bool "Lock often used kernel code in the L2"
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default "y"
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help
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Enable locking parts of the kernel into the L2 cache.
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config CAVIUM_OCTEON_LOCK_L2_TLB
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bool "Lock the TLB handler in L2"
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depends on CAVIUM_OCTEON_LOCK_L2
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default "y"
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help
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Lock the low level TLB fast path into L2.
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config CAVIUM_OCTEON_LOCK_L2_EXCEPTION
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bool "Lock the exception handler in L2"
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depends on CAVIUM_OCTEON_LOCK_L2
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default "y"
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help
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Lock the low level exception handler into L2.
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config CAVIUM_OCTEON_LOCK_L2_LOW_LEVEL_INTERRUPT
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bool "Lock the interrupt handler in L2"
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depends on CAVIUM_OCTEON_LOCK_L2
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default "y"
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help
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Lock the low level interrupt handler into L2.
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config CAVIUM_OCTEON_LOCK_L2_INTERRUPT
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bool "Lock the 2nd level interrupt handler in L2"
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depends on CAVIUM_OCTEON_LOCK_L2
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default "y"
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help
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Lock the 2nd level interrupt handler in L2.
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config CAVIUM_OCTEON_LOCK_L2_MEMCPY
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bool "Lock memcpy() in L2"
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depends on CAVIUM_OCTEON_LOCK_L2
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default "y"
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help
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Lock the kernel's implementation of memcpy() into L2.
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config ARCH_SPARSEMEM_ENABLE
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def_bool y
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select SPARSEMEM_STATIC
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config IOMMU_HELPER
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bool
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config NEED_SG_DMA_LENGTH
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bool
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config SWIOTLB
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def_bool y
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select IOMMU_HELPER
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select NEED_SG_DMA_LENGTH
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endif # CPU_CAVIUM_OCTEON
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