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Linux/arch/arm/Kconfig-nommu

  1 #
  2 # Kconfig for uClinux(non-paged MM) depend configurations
  3 # Hyok S. Choi <hyok.choi@samsung.com>
  4 # 
  5 
  6 config SET_MEM_PARAM
  7         bool "Set flash/sdram size and base addr"
  8         help
  9          Say Y to manually set the base addresses and sizes.
 10          otherwise, the default values are assigned.
 11 
 12 config DRAM_BASE
 13         hex '(S)DRAM Base Address' if SET_MEM_PARAM
 14         default 0x00800000
 15 
 16 config DRAM_SIZE
 17         hex '(S)DRAM SIZE' if SET_MEM_PARAM
 18         default 0x00800000
 19 
 20 config FLASH_MEM_BASE
 21         hex 'FLASH Base Address' if SET_MEM_PARAM
 22         default 0x00400000
 23 
 24 config FLASH_SIZE
 25         hex 'FLASH Size' if SET_MEM_PARAM
 26         default 0x00400000
 27 
 28 config PROCESSOR_ID
 29         hex 'Hard wire the processor ID'
 30         default 0x00007700
 31         depends on !(CPU_CP15 || CPU_V7M)
 32         help
 33           If processor has no CP15 register, this processor ID is
 34           used instead of the auto-probing which utilizes the register.
 35 
 36 config REMAP_VECTORS_TO_RAM
 37         bool 'Install vectors to the beginning of RAM' if DRAM_BASE
 38         depends on DRAM_BASE
 39         help
 40           The kernel needs to change the hardware exception vectors.
 41           In nommu mode, the hardware exception vectors are normally
 42           placed at address 0x00000000. However, this region may be
 43           occupied by read-only memory depending on H/W design.
 44 
 45           If the region contains read-write memory, say 'n' here.
 46 
 47           If your CPU provides a remap facility which allows the exception
 48           vectors to be mapped to writable memory, say 'n' here.
 49 
 50           Otherwise, say 'y' here.  In this case, the kernel will require
 51           external support to redirect the hardware exception vectors to
 52           the writable versions located at DRAM_BASE.
 53 
 54 config ARM_MPU
 55        bool 'Use the ARM v7 PMSA Compliant MPU'
 56        depends on CPU_V7
 57        default y
 58        help
 59          Some ARM systems without an MMU have instead a Memory Protection
 60          Unit (MPU) that defines the type and permissions for regions of
 61          memory.
 62 
 63          If your CPU has an MPU then you should choose 'y' here unless you
 64          know that you do not want to use the MPU.

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