arch/arm/plat-s3c/Kconfig

   1 # arch/arm/plat-s3c/Kconfig
   2 #
   3 # Copyright 2007 Simtec Electronics
   4 #
   5 # Licensed under GPLv2
   6
   7 config PLAT_S3C
   8         bool
   9         depends on ARCH_S3C2410
  10         default y if ARCH_S3C2410
  11         select NO_IOPORT
  12         help
  13           Base platform code for any Samsung S3C device
  14
  15 # low-level serial option nodes
  16
  17 config CPU_LLSERIAL_S3C2410_ONLY
  18         bool
  19         depends on ARCH_S3C2410
  20         default y if CPU_LLSERIAL_S3C2410 && !CPU_LLSERIAL_S3C2440
  21
  22 config CPU_LLSERIAL_S3C2440_ONLY
  23         bool
  24         depends on ARCH_S3C2410
  25         default y if CPU_LLSERIAL_S3C2440 && !CPU_LLSERIAL_S3C2410
  26
  27 config CPU_LLSERIAL_S3C2410
  28         bool
  29         depends on ARCH_S3C2410
  30         help
  31           Selected if there is an S3C2410 (or register compatible) serial
  32           low-level implementation needed
  33
  34 config CPU_LLSERIAL_S3C2440
  35         bool
  36         depends on ARCH_S3C2410
  37         help
  38           Selected if there is an S3C2440 (or register compatible) serial
  39           low-level implementation needed
  40
  41 # boot configurations
  42
  43 comment "Boot options"
  44
  45 config S3C_BOOT_WATCHDOG
  46         bool "S3C Initialisation watchdog"
  47         depends on PLAT_S3C && S3C2410_WATCHDOG
  48         help
  49           Say y to enable the watchdog during the kernel decompression
  50           stage. If the kernel fails to uncompress, then the watchdog
  51           will trigger a reset and the system should restart.
  52
  53 config S3C_BOOT_ERROR_RESET
  54         bool "S3C Reboot on decompression error"
  55         depends on PLAT_S3C
  56         help
  57           Say y here to use the watchdog to reset the system if the
  58           kernel decompressor detects an error during decompression.
  59
  60 comment "Power management"
  61
  62 config S3C2410_PM_DEBUG
  63         bool "S3C2410 PM Suspend debug"
  64         depends on PLAT_S3C && PM
  65         help
  66           Say Y here if you want verbose debugging from the PM Suspend and
  67           Resume code. See <file:Documentation/arm/Samsung-S3C24XX/Suspend.txt>
  68           for more information.
  69
  70 config S3C2410_PM_CHECK
  71         bool "S3C2410 PM Suspend Memory CRC"
  72         depends on PLAT_S3C && PM && CRC32
  73         help
  74           Enable the PM code's memory area checksum over sleep. This option
  75           will generate CRCs of all blocks of memory, and store them before
  76           going to sleep. The blocks are then checked on resume for any
  77           errors.
  78
  79           Note, this can take several seconds depending on memory size
  80           and CPU speed.
  81
  82           See <file:Documentation/arm/Samsung-S3C24XX/Suspend.txt>
  83
  84 config S3C2410_PM_CHECK_CHUNKSIZE
  85         int "S3C2410 PM Suspend CRC Chunksize (KiB)"
  86         depends on PLAT_S3C && PM && S3C2410_PM_CHECK
  87         default 64
  88         help
  89           Set the chunksize in Kilobytes of the CRC for checking memory
  90           corruption over suspend and resume. A smaller value will mean that
  91           the CRC data block will take more memory, but wil identify any
  92           faults with better precision.
  93
  94           See <file:Documentation/arm/Samsung-S3C24XX/Suspend.txt>
  95
  96 config S3C_LOWLEVEL_UART_PORT
  97         int "S3C UART to use for low-level messages"
  98         depends on PLAT_S3C
  99         default 0
 100         help
 101           Choice of which UART port to use for the low-level messages,
 102           such as the `Uncompressing...` at start time. The value of
 103           this configuration should be between zero and two. The port
 104           must have been initialised by the boot-loader before use.