diff options
Diffstat (limited to 'drivers/tty/Kconfig')
| -rw-r--r-- | drivers/tty/Kconfig | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig index b24aa010f68c..c01f45095877 100644 --- a/drivers/tty/Kconfig +++ b/drivers/tty/Kconfig @@ -419,4 +419,51 @@ config DA_CONSOLE help This enables a console on a Dash channel. +config MIPS_EJTAG_FDC_TTY + bool "MIPS EJTAG Fast Debug Channel TTY" + depends on MIPS_CDMM + help + This enables a TTY and console on the MIPS EJTAG Fast Debug Channels, + if they are present. This can be useful when working with an EJTAG + probe which supports it, to get console output and a login prompt via + EJTAG without needing to connect a serial cable. + + TTY devices are named e.g. ttyFDC3c2 (for FDC channel 2 of the FDC on + CPU3). + + The console can be enabled with console=fdc1 (for FDC channel 1 on all + CPUs). Do not use the console unless there is a debug probe attached + to drain the FDC TX FIFO. + + If unsure, say N. + +config MIPS_EJTAG_FDC_EARLYCON + bool "Early FDC console" + depends on MIPS_EJTAG_FDC_TTY + help + This registers a console on FDC channel 1 very early during boot (from + MIPS arch code). This is useful for bring-up and debugging early boot + issues. + + Do not enable unless there is a debug probe attached to drain the FDC + TX FIFO. + + If unsure, say N. + +config MIPS_EJTAG_FDC_KGDB + bool "Use KGDB over an FDC channel" + depends on MIPS_EJTAG_FDC_TTY && KGDB + default y + help + This enables the use of KGDB over an FDC channel, allowing KGDB to be + used remotely or when a serial port isn't available. + +config MIPS_EJTAG_FDC_KGDB_CHAN + int "KGDB FDC channel" + depends on MIPS_EJTAG_FDC_KGDB + range 2 15 + default 3 + help + FDC channel number to use for KGDB. + endif # TTY |