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How to configure the Linux kernel/arch/arm/mach-lh7a40x

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Howto configure the Linux kernel / arch / arm / mach-lh7a40x


ARCH_LH7A40X

LH7A40X ImplementationsEdit

  • Option: MACH_KEV7A400
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) KEV7A400
    • select ARCH_LH7A400
      Say Y here if you are using the Sharp KEV7A400 development board. This hardware is discontinued, so I'd be very surprised if you wanted this option.


  • Option: MACH_LPD7A400
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) LPD7A400 Card Engine
    • select ARCH_LH7A400
select IDE_POLL
    • Say Y here if you are using Logic Product Development's LPD7A400 CardEngine. For the time being, the LPD7A400 and LPD7A404 options are mutually exclusive.


  • Option: MACH_LPD7A404
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) LPD7A404 Card Engine
    • select ARCH_LH7A404
select IDE_POLL
    • Say Y here if you are using Logic Product Development's LPD7A404 CardEngine. For the time being, the LPD7A400 and LPD7A404 options are mutually exclusive.


  • Option: ARCH_LH7A400
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)


  • Option: ARCH_LH7A404
    • Kernel Versions: 2.6.15.6 ...
    • (on/off)


  • Option: LH7A40X_CONTIGMEM
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Disable NUMA Support
    • depends on ARCH_LH7A40X
      Say Y here if your bootloader sets the SROMLL bit(s) in the SDRAM controller, organizing memory as a contiguous array. This option will disable CONFIG_DISCONTIGMEM and force the kernel to manage all memory in one node.
      Setting this option incorrectly may prevent the kernel from booting. It is OK to leave it N.
      For more information, consult <file:Documentation/arm/Sharp-LH/SDRAM>.


  • Option: LH7A40X_ONE_BANK_PER_NODE
    • Kernel Versions: 2.6.15.6 ...
    • (on/off) Optimize NUMA Node Tables for Size
    • depends on ARCH_LH7A40X && !LH7A40X_CONTIGMEM
      Say Y here to produce compact memory node tables. By default pairs of adjacent physical RAM banks are managed together in a single node, incurring some wasted overhead in the node tables, however also maintaining compatibility with systems where physical memory is truly contiguous.
      Setting this option incorrectly may prevent the kernel from booting. It is OK to leave it N.
      For more information, consult <file:Documentation/arm/Sharp-LH/SDRAM>.




Linux Kernel Configuration

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