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2a1e4266e8
This introduces a generic driver set for console messages routed over inter-processor interrupt (IPI) channels. These drivers bind to a low-level IPI driver instance for the actual transport of messages. ipi_console_sender installs printk and/or stdout hooks to forward messages over IPI. There is currently no buffering on the sending side. ipi_console_receiver installs an IPI callback which stashes incoming characters into a ring buffer, which is monitored by a nanokernel fiber. The fiber buffers the characters on a per-line basis and sends them to either printk or stdout. Multiple instances of this driver may be created in case you need to receive console data from multiple CPUs. Change-Id: Icebc110794fbe040f975101cd2ae6e78fb38645a Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
116 lines
3.4 KiB
Plaintext
116 lines
3.4 KiB
Plaintext
# Kconfig - console driver configuration options
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#
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# Copyright (c) 2014-2015 Wind River Systems, Inc.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# 1) Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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#
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# 2) Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# 3) Neither the name of Wind River Systems nor the names of its contributors
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# may be used to endorse or promote products derived from this software without
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# specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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menuconfig CONSOLE
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bool
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prompt "Console drivers"
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if CONSOLE
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config CONSOLE_HAS_DRIVER
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bool
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default n
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help
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This is an option to be enabled by console drivers to signal
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that some kind of console exists.
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config CONSOLE_HANDLER
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bool
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prompt "Enable console input handler"
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select UART_INTERRUPT_DRIVEN
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default n
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help
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This option enables console input handler allowing to write simple
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interaction between serial console and the OS.
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config UART_CONSOLE
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bool
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prompt "Use UART for console"
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default n
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depends on SERIAL && SERIAL_HAS_DRIVER
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select CONSOLE_HAS_DRIVER
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help
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Enable this option to use one UART for console. Make sure
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CONFIG_UART_CONSOLE_INDEX is also set correctly.
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config UART_CONSOLE_INDEX
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int "UART Console Index"
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default 0
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depends on UART_CONSOLE
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help
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This option specifies index for the console uart port.
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config UART_CONSOLE_BAUDRATE
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int "UART Console Baud Rate"
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default 115200
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depends on UART_CONSOLE
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help
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This specifies the baud rate for the UART console.
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Default is 115200, which should be usable for most RS232
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and USB adapters.
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config RAM_CONSOLE
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bool
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prompt "Use RAM console"
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select CONSOLE_HAS_DRIVER
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default n
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help
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Emit console messages to a RAM buffer "ram_console" which can
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be examined at runtime with a debugger. Useful in board bring-up
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if there aren't any working serial drivers.
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config RAM_CONSOLE_BUFFER_SIZE
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int "Ram Console buffer size"
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default 1024
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depends on RAM_CONSOLE
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help
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Size of the RAM console buffer. Messages will wrap around if the
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length is exceeded.
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config IPI_CONSOLE_SENDER
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bool
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prompt "Inter-processor Interrupt console sender"
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default n
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help
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Enable the sending side of IPI console
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config IPI_CONSOLE_RECEIVER
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bool
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prompt "Inter-processor interrupt console receiver"
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select RING_BUFFER
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default n
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help
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Enable the receiving side of IPI console
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endif
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