#
# Serial device configuration
#

menu "Serial drivers"

config REQUIRE_SERIAL_CONSOLE
        bool "Require a serial port for console"
        # Running without a serial console is not supported by the
        # non-dm serial code
        depends on DM_SERIAL
        default y
        help
          Require a serial port for the console, and panic if none is found
          during serial port initialization (default y). Set this to n on
          boards which have no debug serial port whatsoever.

config SERIAL_PRESENT
        bool "Provide a serial driver"
        depends on DM_SERIAL
        default y
        help
          In very space-constrained devices even the full UART driver is too
          large. In this case the debug UART can still be used in some cases.
          This option enables the full UART in U-Boot, so if is it disabled,
          the full UART driver will be omitted, thus saving space.

config SPL_SERIAL_PRESENT
        bool "Provide a serial driver in SPL"
        depends on DM_SERIAL
        default y
        help
          In very space-constrained devices even the full UART driver is too
          large. In this case the debug UART can still be used in some cases.
          This option enables the full UART in SPL, so if is it disabled,
          the full UART driver will be omitted, thus saving space.

config DM_SERIAL
        bool "Enable Driver Model for serial drivers"
        depends on DM
        help
          Enable driver model for serial. This replaces
          drivers/serial/serial.c with the serial uclass, which
          implements serial_putc() etc. The uclass interface is
          defined in include/serial.h.

config DEBUG_UART
        bool "Enable an early debug UART for debugging"
        help
          The debug UART is intended for use very early in U-Boot to debug
          problems when an ICE or other debug mechanism is not available.

          To use it you should:
          - Make sure your UART supports this interface
          - Enable CONFIG_DEBUG_UART
          - Enable the CONFIG for your UART to tell it to provide this interface
                (e.g. CONFIG_DEBUG_UART_NS16550)
          - Define the required settings as needed (see below)
          - Call debug_uart_init() before use
          - Call debug_uart_putc() to output a character

          Depending on your platform it may be possible to use this UART before
          a stack is available.

          If your UART does not support this interface you can probably add
          support quite easily. Remember that you cannot use driver model and
          it is preferred to use no stack.

          You must not use this UART once driver model is working and the
          serial drivers are up and running (done in serial_init()). Otherwise
          the drivers may conflict and you will get strange output.

choice
        prompt "Select which UART will provide the debug UART"
        depends on DEBUG_UART
        default DEBUG_UART_NS16550

config DEBUG_UART_ALTERA_JTAGUART
        bool "Altera JTAG UART"
        help
          Select this to enable a debug UART using the altera_jtag_uart driver.
          You will need to provide parameters to make this work. The driver will
          be available until the real driver model serial is running.

config DEBUG_UART_ALTERA_UART
        bool "Altera UART"
        help
          Select this to enable a debug UART using the altera_uart driver.
          You will need to provide parameters to make this work. The driver will
          be available until the real driver model serial is running.

config DEBUG_UART_AR933X
        bool "QCA/Atheros ar933x"
        depends on AR933X_UART
        help
          Select this to enable a debug UART using the ar933x uart driver.
          You will need to provide parameters to make this work. The
          driver will be available until the real driver model serial is
          running.

config DEBUG_UART_ATMEL
        bool "Atmel USART"
        help
          Select this to enable a debug UART using the atmel usart driver. You
          will need to provide parameters to make this work. The driver will
          be available until the real driver-model serial is running.

config DEBUG_UART_NS16550
        bool "ns16550"
        help
          Select this to enable a debug UART using the ns16550 driver. You
          will need to provide parameters to make this work. The driver will
          be available until the real driver model serial is running.

config DEBUG_EFI_CONSOLE
        bool "EFI"
        depends on EFI_APP
        help
          Select this to enable a debug console which calls back to EFI to
          output to the console. This can be useful for early debugging of
          U-Boot when running on top of EFI (Extensive Firmware Interface).
          This is a type of BIOS used by PCs.

config DEBUG_UART_S5P
        bool "Samsung S5P"
        help
          Select this to enable a debug UART using the serial_s5p driver. You
          will need to provide parameters to make this work. The driver will
          be available until the real driver-model serial is running.

config DEBUG_UART_MESON
        bool "Amlogic Meson"
        depends on MESON_SERIAL
        help
          Select this to enable a debug UART using the serial_meson driver. You
          will need to provide parameters to make this work. The driver will
          be available until the real driver-model serial is running.

config DEBUG_UART_UARTLITE
        bool "Xilinx Uartlite"
        help
          Select this to enable a debug UART using the serial_uartlite driver.
          You will need to provide parameters to make this work. The driver will
          be available until the real driver-model serial is running.

config DEBUG_UART_ARM_DCC
        bool "ARM DCC"
        help
          Select this to enable a debug UART using the ARM JTAG DCC port.
          The DCC port can be used for very early debugging and doesn't require
          any additional setting like address/baudrate/clock. On systems without
          any serial interface this is the easiest way how to get console.
          Every ARM core has own DCC port which is the part of debug interface.
          This port is available at least on ARMv6, ARMv7, ARMv8 and XScale
          architectures.

config DEBUG_MVEBU_A3700_UART
        bool "Marvell Armada 3700"
        help
          Select this to enable a debug UART using the serial_mvebu driver. You
          will need to provide parameters to make this work. The driver will
          be available until the real driver-model serial is running.

config DEBUG_UART_ZYNQ
        bool "Xilinx Zynq"
        help
          Select this to enable a debug UART using the serial_zynq driver. You
          will need to provide parameters to make this work. The driver will
          be available until the real driver-model serial is running.

config DEBUG_UART_APBUART
        depends on LEON3
        bool "Gaisler APBUART"
        help
          Select this to enable a debug UART using the serial_leon3 driver. You
          will need to provide parameters to make this work. The driver will
          be available until the real driver model serial is running.

config DEBUG_UART_PL010
        bool "pl010"
        help
          Select this to enable a debug UART using the pl01x driver with the
          PL010 UART type. You will need to provide parameters to make this
          work. The driver will be available until the real driver model
          serial is running.

config DEBUG_UART_PL011
        bool "pl011"
        help
          Select this to enable a debug UART using the pl01x driver with the
          PL011 UART type. You will need to provide parameters to make this
          work. The driver will be available until the real driver model
          serial is running.

config DEBUG_UART_PIC32
        bool "Microchip PIC32"
        depends on PIC32_SERIAL
        help
          Select this to enable a debug UART using the serial_pic32 driver. You
          will need to provide parameters to make this work. The driver will
          be available until the real driver model serial is running.

config DEBUG_UART_UNIPHIER
        bool "UniPhier on-chip UART"
        depends on ARCH_UNIPHIER
        help
          Select this to enable a debug UART using the UniPhier on-chip UART.
          You will need to provide DEBUG_UART_BASE to make this work.  The
          driver will be available until the real driver-model serial is
          running.

endchoice

config DEBUG_UART_BASE
        hex "Base address of UART"
        depends on DEBUG_UART
        help
          This is the base address of your UART for memory-mapped UARTs.

          A default should be provided by your board, but if not you will need
          to use the correct value here.

config DEBUG_UART_CLOCK
        int "UART input clock"
        depends on DEBUG_UART
        help
          The UART input clock determines the speed of the internal UART
          circuitry. The baud rate is derived from this by dividing the input
          clock down.

          A default should be provided by your board, but if not you will need
          to use the correct value here.

config DEBUG_UART_SHIFT
        int "UART register shift"
        depends on DEBUG_UART
        default 0 if DEBUG_UART
        help
          Some UARTs (notably ns16550) support different register layouts
          where the registers are spaced either as bytes, words or some other
          value. Use this value to specify the shift to use, where 0=byte
          registers, 2=32-bit word registers, etc.

config DEBUG_UART_BOARD_INIT
        bool "Enable board-specific debug UART init"
        depends on DEBUG_UART
        help
          Some boards need to set things up before the debug UART can be used.
          On these boards a call to debug_uart_init() is insufficient. When
          this option is enabled, the function board_debug_uart_init() will
          be called when debug_uart_init() is called. You can put any code
          here that is needed to set up the UART ready for use, such as set
          pin multiplexing or enable clocks.

config DEBUG_UART_ANNOUNCE
        bool "Show a message when the debug UART starts up"
        depends on DEBUG_UART
        help
          Enable this option to show a message when the debug UART is ready
          for use. You will see a message like "<debug_uart> " as soon as
          U-Boot has the UART ready for use (i.e. your code calls
          debug_uart_init()). This can be useful just as a check that
          everything is working.

config DEBUG_UART_SKIP_INIT
        bool "Skip UART initialization"
        help
          Select this if the UART you want to use for debug output is already
          initialized by the time U-Boot starts its execution.

config ALTERA_JTAG_UART
        bool "Altera JTAG UART support"
        depends on DM_SERIAL
        help
          Select this to enable an JTAG UART for Altera devices.The JTAG UART
          core implements a method to communicate serial character streams
          between a host PC and a Qsys system on an Altera FPGA. Please find
          details on the "Embedded Peripherals IP User Guide" of Altera.

config ALTERA_JTAG_UART_BYPASS
        bool "Bypass output when no connection"
        depends on ALTERA_JTAG_UART
        help
          Bypass console output and keep going even if there is no JTAG
          terminal connection with the host. The console output will resume
          once the JTAG terminal is connected. Without the bypass, the console
          output will wait forever until a JTAG terminal is connected. If you
          not are sure, say Y.

config ALTERA_UART
        bool "Altera UART support"
        depends on DM_SERIAL
        help
          Select this to enable an UART for Altera devices. Please find
          details on the "Embedded Peripherals IP User Guide" of Altera.

config AR933X_UART
        bool "QCA/Atheros ar933x UART support"
        depends on DM_SERIAL && SOC_AR933X
        help
          Select this to enable UART support for QCA/Atheros ar933x
          devices. This driver uses driver model and requires a device
          tree binding to operate, please refer to the document at
          doc/device-tree-bindings/serial/qca,ar9330-uart.txt.

config ATMEL_USART
        bool "Atmel USART support"
        help
          Select this to enable USART support for Atmel SoCs. It can be
          configured in the device tree, and input clock frequency can
          be got from the clk node.

config FSL_LPUART
        bool "Freescale LPUART support"
        help
          Select this to enable a Low Power UART for Freescale VF610 and
          QorIQ Layerscape devices.

config MVEBU_A3700_UART
        bool "UART support for Armada 3700"
        default n
        help
          Choose this option to add support for UART driver on the Marvell
          Armada 3700 SoC. The base address is configured via DT.

config MXC_UART
        bool "IMX serial port support"
        depends on MX6
        help
          If you have a machine based on a Motorola IMX CPU you
          can enable its onboard serial port by enabling this option.

config PIC32_SERIAL
        bool "Support for Microchip PIC32 on-chip UART"
        depends on DM_SERIAL && MACH_PIC32
        default y
        help
          Support for the UART found on Microchip PIC32 SoC's.

config SYS_NS16550
        bool "NS16550 UART or compatible"
        help
          Support NS16550 UART or compatible. This can be enabled in the
          device tree with the correct input clock frequency. If the input
          clock frequency is not defined in the device tree, the macro
          CONFIG_SYS_NS16550_CLK defined in a legacy board header file will
          be used. It can be a constant or a function to get clock, eg,
          get_serial_clock().

config ROCKCHIP_SERIAL
        bool "Rockchip on-chip UART support"
        depends on DM_SERIAL && SPL_OF_PLATDATA
        help
          Select this to enable a debug UART for Rockchip devices when using
          CONFIG_OF_PLATDATA (i.e. a compiled-in device tree replacemenmt).
          This uses the ns16550 driver, converting the platdata from of-platdata
          to the ns16550 format.

config SANDBOX_SERIAL
        bool "Sandbox UART support"
        depends on SANDBOX
        help
          Select this to enable a seral UART for sandbox. This is required to
          operate correctly, otherwise you will see no serial output from
          sandbox. The emulated UART will display to the console and console
          input will be fed into the UART. This allows you to interact with
          U-Boot.

          The operation of the console is controlled by the -t command-line
          flag. In raw mode, U-Boot sees all characters from the terminal
          before they are processed, including Ctrl-C. In cooked mode, Ctrl-C
          is processed by the terminal, and terminates U-Boot. Valid options
          are:

             -t raw-with-sigs   Raw mode, Ctrl-C will terminate U-Boot
             -t raw             Raw mode, Ctrl-C is processed by U-Boot
             -t cooked          Cooked mode, Ctrl-C terminates

config UNIPHIER_SERIAL
        bool "Support for UniPhier on-chip UART"
        depends on ARCH_UNIPHIER
        default y
        help
          If you have a UniPhier based board and want to use the on-chip
          serial ports, say Y to this option. If unsure, say N.

config XILINX_UARTLITE
        bool "Xilinx Uarlite support"
        depends on DM_SERIAL && (MICROBLAZE || ARCH_ZYNQ || ARCH_ZYNQMP || 4xx)
        help
          If you have a Xilinx based board and want to use the uartlite
          serial ports, say Y to this option. If unsure, say N.

config MESON_SERIAL
        bool "Support for Amlogic Meson UART"
        depends on DM_SERIAL && ARCH_MESON
        help
          If you have an Amlogic Meson based board and want to use the on-chip
          serial ports, say Y to this option. If unsure, say N.

config MSM_SERIAL
        bool "Qualcomm on-chip UART"
        depends on DM_SERIAL
        help
          Support Data Mover UART used on Qualcomm Snapdragon SoCs.
          It should support all Qualcomm devices with UARTDM version 1.4,
          for example APQ8016 and MSM8916.
          Single baudrate is supported in current implementation (115200).

endmenu