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    • Masahiro Yamada's avatar
      51b17d49
      arm: debug: add Kconfig entries for lowlevel debug · 51b17d49
      Masahiro Yamada authored
      
      We have not had a good method to debug the early boot stage such as
      lowlevel_init function.  I guess developers generally use dedicated
      debuggers for that, but it is difficult in some cases.
      (For example, my debugger cannot connect to the ARM processor when
      it is in the secure state.  It sometimes happens when I need to
      debug the early boot stage on ARM SoCs with secure extension.)
      
      The low level debug feature in Linux would be also helpful for U-boot
      when we are stucking in nasty problems where the console is not
      available yet.
      
      You have to enable CONFIG_DEBUG_LL to use this feature.
      For now, only 8250-compatible UART devices are supported.
      You can add a header file under arch/arm/include/debug/ directory
      to support your UART device if necessary.
      
      Signed-off-by: default avatarMasahiro Yamada <yamada.m@jp.panasonic.com>
      51b17d49
      History
      arm: debug: add Kconfig entries for lowlevel debug
      Masahiro Yamada authored
      
      We have not had a good method to debug the early boot stage such as
      lowlevel_init function.  I guess developers generally use dedicated
      debuggers for that, but it is difficult in some cases.
      (For example, my debugger cannot connect to the ARM processor when
      it is in the secure state.  It sometimes happens when I need to
      debug the early boot stage on ARM SoCs with secure extension.)
      
      The low level debug feature in Linux would be also helpful for U-boot
      when we are stucking in nasty problems where the console is not
      available yet.
      
      You have to enable CONFIG_DEBUG_LL to use this feature.
      For now, only 8250-compatible UART devices are supported.
      You can add a header file under arch/arm/include/debug/ directory
      to support your UART device if necessary.
      
      Signed-off-by: default avatarMasahiro Yamada <yamada.m@jp.panasonic.com>
    misc NaN GiB