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215c8bed12
Add support for early debug printf, before the availability of driver model and device tree support. Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com> Signed-off-by: Patrice Chotard <patrice.chotard@st.com> Reviewed-by: Simon Glass <sjg@chromium.org>
711 lines
22 KiB
Plaintext
711 lines
22 KiB
Plaintext
#
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# Serial device configuration
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#
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menu "Serial drivers"
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config BAUDRATE
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int "Default baudrate"
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default 115200
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help
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Select a default baudrate, where "default" has a driver-specific
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meaning of either setting the baudrate for the early debug UART
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in the SPL stage (most drivers) or for choosing a default baudrate
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in the absence of an environment setting (serial_mxc.c).
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config REQUIRE_SERIAL_CONSOLE
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bool "Require a serial port for console"
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# Running without a serial console is not supported by the
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# non-dm serial code
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depends on DM_SERIAL
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default y
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help
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Require a serial port for the console, and panic if none is found
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during serial port initialization (default y). Set this to n on
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boards which have no debug serial port whatsoever.
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config SPECIFY_CONSOLE_INDEX
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bool "Specify the port number used for console"
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default y if !DM_SERIAL || (SPL && !SPL_DM_SERIAL) || \
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(TPL && !TPL_DM_SERIAL)
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help
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In various cases, we need to specify which of the UART devices that
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a board or SoC has available are to be used for the console device
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in U-Boot.
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config SERIAL_PRESENT
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bool "Provide a serial driver"
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depends on DM_SERIAL
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default y
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help
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In very space-constrained devices even the full UART driver is too
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large. In this case the debug UART can still be used in some cases.
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This option enables the full UART in U-Boot, so if is it disabled,
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the full UART driver will be omitted, thus saving space.
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config SPL_SERIAL_PRESENT
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bool "Provide a serial driver in SPL"
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depends on DM_SERIAL
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default y
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help
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In very space-constrained devices even the full UART driver is too
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large. In this case the debug UART can still be used in some cases.
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This option enables the full UART in SPL, so if is it disabled,
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the full UART driver will be omitted, thus saving space.
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# Logic to allow us to use the imply keyword to set what the default port
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# should be. The default is otherwise 1.
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config CONS_INDEX_0
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bool
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config CONS_INDEX_2
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bool
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config CONS_INDEX_3
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bool
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config CONS_INDEX_4
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bool
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config CONS_INDEX_5
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bool
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config CONS_INDEX_6
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bool
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config CONS_INDEX
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int "UART used for console"
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depends on SPECIFY_CONSOLE_INDEX
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range 0 6
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default 0 if CONS_INDEX_0
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default 2 if CONS_INDEX_2
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default 3 if CONS_INDEX_3
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default 4 if CONS_INDEX_4
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default 5 if CONS_INDEX_5
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default 6 if CONS_INDEX_6
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default 1
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help
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Set this to match the UART number of the serial console.
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config DM_SERIAL
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bool "Enable Driver Model for serial drivers"
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depends on DM
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help
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Enable driver model for serial. This replaces
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drivers/serial/serial.c with the serial uclass, which
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implements serial_putc() etc. The uclass interface is
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defined in include/serial.h.
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config SERIAL_RX_BUFFER
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bool "Enable RX buffer for serial input"
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depends on DM_SERIAL
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help
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Enable RX buffer support for the serial driver. This enables
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pasting longer strings, even when the RX FIFO of the UART is
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not big enough (e.g. 16 bytes on the normal NS16550).
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config SERIAL_RX_BUFFER_SIZE
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int "RX buffer size"
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depends on SERIAL_RX_BUFFER
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default 256
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help
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The size of the RX buffer (needs to be power of 2)
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config SERIAL_SEARCH_ALL
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bool "Search for serial devices after default one failed"
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depends on DM_SERIAL
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help
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The serial subsystem only searches for a single serial device
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that was instantiated, but does not check whether it was probed
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correctly. With this option set, we make successful probing
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mandatory and search for fallback serial devices if the default
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device does not work.
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If unsure, say N.
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config SPL_DM_SERIAL
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bool "Enable Driver Model for serial drivers in SPL"
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depends on DM_SERIAL && SPL_DM
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default y
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help
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Enable driver model for serial in SPL. This replaces
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drivers/serial/serial.c with the serial uclass, which
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implements serial_putc() etc. The uclass interface is
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defined in include/serial.h.
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config TPL_DM_SERIAL
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bool "Enable Driver Model for serial drivers in TPL"
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depends on DM_SERIAL
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default y if TPL && DM_SERIAL
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help
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Enable driver model for serial in TPL. This replaces
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drivers/serial/serial.c with the serial uclass, which
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implements serial_putc() etc. The uclass interface is
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defined in include/serial.h.
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config DEBUG_UART
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bool "Enable an early debug UART for debugging"
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help
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The debug UART is intended for use very early in U-Boot to debug
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problems when an ICE or other debug mechanism is not available.
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To use it you should:
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- Make sure your UART supports this interface
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- Enable CONFIG_DEBUG_UART
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- Enable the CONFIG for your UART to tell it to provide this interface
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(e.g. CONFIG_DEBUG_UART_NS16550)
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- Define the required settings as needed (see below)
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- Call debug_uart_init() before use
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- Call debug_uart_putc() to output a character
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Depending on your platform it may be possible to use this UART before
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a stack is available.
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If your UART does not support this interface you can probably add
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support quite easily. Remember that you cannot use driver model and
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it is preferred to use no stack.
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You must not use this UART once driver model is working and the
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serial drivers are up and running (done in serial_init()). Otherwise
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the drivers may conflict and you will get strange output.
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choice
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prompt "Select which UART will provide the debug UART"
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depends on DEBUG_UART
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default DEBUG_UART_NS16550
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config DEBUG_UART_ALTERA_JTAGUART
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bool "Altera JTAG UART"
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help
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Select this to enable a debug UART using the altera_jtag_uart driver.
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You will need to provide parameters to make this work. The driver will
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be available until the real driver model serial is running.
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config DEBUG_UART_ALTERA_UART
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bool "Altera UART"
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help
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Select this to enable a debug UART using the altera_uart driver.
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You will need to provide parameters to make this work. The driver will
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be available until the real driver model serial is running.
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config DEBUG_UART_AR933X
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bool "QCA/Atheros ar933x"
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depends on AR933X_UART
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help
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Select this to enable a debug UART using the ar933x uart driver.
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You will need to provide parameters to make this work. The
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driver will be available until the real driver model serial is
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running.
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config DEBUG_ARC_SERIAL
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bool "ARC UART"
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depends on ARC_SERIAL
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help
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Select this to enable a debug UART using the ARC UART driver.
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You will need to provide parameters to make this work. The
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driver will be available until the real driver model serial is
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running.
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config DEBUG_UART_ATMEL
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bool "Atmel USART"
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help
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Select this to enable a debug UART using the atmel usart driver. You
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will need to provide parameters to make this work. The driver will
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be available until the real driver-model serial is running.
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config DEBUG_UART_BCM6345
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bool "BCM6345 UART"
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depends on BCM6345_SERIAL
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help
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Select this to enable a debug UART on BCM6345 SoCs. You
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will need to provide parameters to make this work. The driver will
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be available until the real driver model serial is running.
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config DEBUG_UART_NS16550
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bool "ns16550"
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help
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Select this to enable a debug UART using the ns16550 driver. You
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will need to provide parameters to make this work. The driver will
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be available until the real driver model serial is running.
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config DEBUG_EFI_CONSOLE
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bool "EFI"
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depends on EFI_APP
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help
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Select this to enable a debug console which calls back to EFI to
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output to the console. This can be useful for early debugging of
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U-Boot when running on top of EFI (Extensive Firmware Interface).
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This is a type of BIOS used by PCs.
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config DEBUG_UART_S5P
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bool "Samsung S5P"
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help
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Select this to enable a debug UART using the serial_s5p driver. You
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will need to provide parameters to make this work. The driver will
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be available until the real driver-model serial is running.
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config DEBUG_UART_MESON
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bool "Amlogic Meson"
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depends on MESON_SERIAL
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help
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Select this to enable a debug UART using the serial_meson driver. You
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will need to provide parameters to make this work. The driver will
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be available until the real driver-model serial is running.
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config DEBUG_UART_UARTLITE
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bool "Xilinx Uartlite"
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help
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Select this to enable a debug UART using the serial_uartlite driver.
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You will need to provide parameters to make this work. The driver will
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be available until the real driver-model serial is running.
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config DEBUG_UART_ARM_DCC
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bool "ARM DCC"
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help
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Select this to enable a debug UART using the ARM JTAG DCC port.
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The DCC port can be used for very early debugging and doesn't require
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any additional setting like address/baudrate/clock. On systems without
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any serial interface this is the easiest way how to get console.
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Every ARM core has own DCC port which is the part of debug interface.
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This port is available at least on ARMv6, ARMv7, ARMv8 and XScale
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architectures.
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config DEBUG_MVEBU_A3700_UART
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bool "Marvell Armada 3700"
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help
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Select this to enable a debug UART using the serial_mvebu driver. You
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will need to provide parameters to make this work. The driver will
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be available until the real driver-model serial is running.
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config DEBUG_UART_ZYNQ
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bool "Xilinx Zynq"
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help
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Select this to enable a debug UART using the serial_zynq driver. You
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will need to provide parameters to make this work. The driver will
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be available until the real driver-model serial is running.
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config DEBUG_UART_APBUART
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depends on LEON3
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bool "Gaisler APBUART"
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help
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Select this to enable a debug UART using the serial_leon3 driver. You
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will need to provide parameters to make this work. The driver will
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be available until the real driver model serial is running.
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config DEBUG_UART_PL010
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bool "pl010"
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help
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Select this to enable a debug UART using the pl01x driver with the
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PL010 UART type. You will need to provide parameters to make this
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work. The driver will be available until the real driver model
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serial is running.
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config DEBUG_UART_PL011
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bool "pl011"
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help
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Select this to enable a debug UART using the pl01x driver with the
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PL011 UART type. You will need to provide parameters to make this
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work. The driver will be available until the real driver model
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serial is running.
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config DEBUG_UART_PIC32
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bool "Microchip PIC32"
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depends on PIC32_SERIAL
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help
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Select this to enable a debug UART using the serial_pic32 driver. You
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will need to provide parameters to make this work. The driver will
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be available until the real driver model serial is running.
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config DEBUG_UART_MXC
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bool "IMX Serial port"
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depends on MXC_UART
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help
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Select this to enable a debug UART using the serial_mxc driver. You
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will need to provide parameters to make this work. The driver will
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be available until the real driver model serial is running.
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config DEBUG_UART_STM32
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bool "STMicroelectronics STM32"
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depends on STM32_SERIAL
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help
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Select this to enable a debug UART using the serial_stm32 driver
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You will need to provide parameters to make this work.
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The driver will be available until the real driver model
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serial is running.
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config DEBUG_UART_UNIPHIER
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bool "UniPhier on-chip UART"
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depends on ARCH_UNIPHIER
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help
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Select this to enable a debug UART using the UniPhier on-chip UART.
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You will need to provide DEBUG_UART_BASE to make this work. The
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driver will be available until the real driver-model serial is
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running.
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config DEBUG_UART_OMAP
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bool "OMAP uart"
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help
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Select this to enable a debug UART using the omap ns16550 driver.
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You will need to provide parameters to make this work. The driver
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will be available until the real driver model serial is running.
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endchoice
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config DEBUG_UART_BASE
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hex "Base address of UART"
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depends on DEBUG_UART
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help
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This is the base address of your UART for memory-mapped UARTs.
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A default should be provided by your board, but if not you will need
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to use the correct value here.
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config DEBUG_UART_CLOCK
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int "UART input clock"
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depends on DEBUG_UART
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help
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The UART input clock determines the speed of the internal UART
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circuitry. The baud rate is derived from this by dividing the input
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clock down.
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A default should be provided by your board, but if not you will need
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to use the correct value here.
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config DEBUG_UART_SHIFT
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int "UART register shift"
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depends on DEBUG_UART
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default 0 if DEBUG_UART
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help
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Some UARTs (notably ns16550) support different register layouts
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where the registers are spaced either as bytes, words or some other
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value. Use this value to specify the shift to use, where 0=byte
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registers, 2=32-bit word registers, etc.
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config DEBUG_UART_BOARD_INIT
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bool "Enable board-specific debug UART init"
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depends on DEBUG_UART
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help
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Some boards need to set things up before the debug UART can be used.
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On these boards a call to debug_uart_init() is insufficient. When
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this option is enabled, the function board_debug_uart_init() will
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be called when debug_uart_init() is called. You can put any code
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here that is needed to set up the UART ready for use, such as set
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pin multiplexing or enable clocks.
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config DEBUG_UART_ANNOUNCE
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bool "Show a message when the debug UART starts up"
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depends on DEBUG_UART
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help
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Enable this option to show a message when the debug UART is ready
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for use. You will see a message like "<debug_uart> " as soon as
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U-Boot has the UART ready for use (i.e. your code calls
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debug_uart_init()). This can be useful just as a check that
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everything is working.
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config DEBUG_UART_SKIP_INIT
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bool "Skip UART initialization"
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help
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Select this if the UART you want to use for debug output is already
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initialized by the time U-Boot starts its execution.
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config ALTERA_JTAG_UART
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bool "Altera JTAG UART support"
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depends on DM_SERIAL
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help
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Select this to enable an JTAG UART for Altera devices.The JTAG UART
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core implements a method to communicate serial character streams
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between a host PC and a Qsys system on an Altera FPGA. Please find
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details on the "Embedded Peripherals IP User Guide" of Altera.
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config ALTERA_JTAG_UART_BYPASS
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bool "Bypass output when no connection"
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depends on ALTERA_JTAG_UART
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help
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Bypass console output and keep going even if there is no JTAG
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terminal connection with the host. The console output will resume
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once the JTAG terminal is connected. Without the bypass, the console
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output will wait forever until a JTAG terminal is connected. If you
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not are sure, say Y.
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config ALTERA_UART
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bool "Altera UART support"
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depends on DM_SERIAL
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help
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Select this to enable an UART for Altera devices. Please find
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details on the "Embedded Peripherals IP User Guide" of Altera.
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config AR933X_UART
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bool "QCA/Atheros ar933x UART support"
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depends on DM_SERIAL && SOC_AR933X
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help
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Select this to enable UART support for QCA/Atheros ar933x
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devices. This driver uses driver model and requires a device
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tree binding to operate, please refer to the document at
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doc/device-tree-bindings/serial/qca,ar9330-uart.txt.
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config ARC_SERIAL
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bool "ARC UART support"
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depends on DM_SERIAL
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help
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Select this to enable support for ARC UART now typically
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only used in Synopsys DesignWare ARC simulators like nSIM.
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config ATMEL_USART
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bool "Atmel USART support"
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help
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Select this to enable USART support for Atmel SoCs. It can be
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configured in the device tree, and input clock frequency can
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be got from the clk node.
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config BCM283X_MU_SERIAL
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bool "Support for BCM283x Mini-UART"
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depends on DM_SERIAL && ARCH_BCM283X
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default y
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help
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Select this to enable Mini-UART support on BCM283X family of SoCs.
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config BCM283X_PL011_SERIAL
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bool "Support for BCM283x PL011 UART"
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depends on PL01X_SERIAL && ARCH_BCM283X
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default y
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help
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Select this to enable an overriding PL011 driver for BCM283X SoCs
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that supports automatic disable, so that it only gets used when
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the UART is actually muxed.
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config BCM6345_SERIAL
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bool "Support for BCM6345 UART"
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depends on DM_SERIAL && ARCH_BMIPS
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help
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Select this to enable UART on BCM6345 SoCs.
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config FSL_LINFLEXUART
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bool "Freescale Linflex UART support"
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depends on DM_SERIAL
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help
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Select this to enable the Linflex serial module found on some
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NXP SoCs like S32V234.
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config FSL_LPUART
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bool "Freescale LPUART support"
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help
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Select this to enable a Low Power UART for Freescale VF610 and
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QorIQ Layerscape devices.
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config MVEBU_A3700_UART
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bool "UART support for Armada 3700"
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default n
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help
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Choose this option to add support for UART driver on the Marvell
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Armada 3700 SoC. The base address is configured via DT.
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config MXC_UART
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bool "IMX serial port support"
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depends on MX5 || MX6
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help
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If you have a machine based on a Motorola IMX CPU you
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can enable its onboard serial port by enabling this option.
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config NULLDEV_SERIAL
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bool "Null serial device"
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help
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Select this to enable null serial device support. A null serial
|
|
device merely acts as a placeholder for a serial device and does
|
|
nothing for all it's operation.
|
|
|
|
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 INTEL_MID_SERIAL
|
|
bool "Intel MID platform UART support"
|
|
depends on DM_SERIAL && OF_CONTROL
|
|
depends on INTEL_MID
|
|
select SYS_NS16550
|
|
help
|
|
Select this to enable a UART for Intel MID platforms.
|
|
This uses the ns16550 driver as a library.
|
|
|
|
config PL010_SERIAL
|
|
bool "ARM PL010 driver"
|
|
depends on !DM_SERIAL
|
|
help
|
|
Select this to enable a UART for platforms using PL010.
|
|
|
|
config PL011_SERIAL
|
|
bool "ARM PL011 driver"
|
|
depends on !DM_SERIAL
|
|
help
|
|
Select this to enable a UART for platforms using PL011.
|
|
|
|
config PL01X_SERIAL
|
|
bool "ARM PL010 and PL011 driver"
|
|
depends on DM_SERIAL
|
|
help
|
|
Select this to enable a UART for platforms using PL010 or PL011.
|
|
|
|
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_SPL_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 SCIF_CONSOLE
|
|
bool "Renesas SCIF UART support"
|
|
depends on SH || ARCH_RMOBILE
|
|
help
|
|
Select this to enable Renesas SCIF UART. To operate serial ports
|
|
on systems with RCar or SH SoCs, say Y to this option. If unsure,
|
|
say N.
|
|
|
|
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).
|
|
|
|
config PXA_SERIAL
|
|
bool "PXA serial port support"
|
|
help
|
|
If you have a machine based on a Marvell XScale PXA2xx CPU you
|
|
can enable its onboard serial ports by enabling this option.
|
|
|
|
config STI_ASC_SERIAL
|
|
bool "STMicroelectronics on-chip UART"
|
|
depends on DM_SERIAL && ARCH_STI
|
|
help
|
|
Select this to enable Asynchronous Serial Controller available
|
|
on STiH410 SoC. This is a basic implementation, it supports
|
|
following baudrate 9600, 19200, 38400, 57600 and 115200.
|
|
|
|
config STM32_SERIAL
|
|
bool "STMicroelectronics STM32 SoCs on-chip UART"
|
|
depends on DM_SERIAL && (STM32F4 || STM32F7 || STM32H7 || ARCH_STM32MP)
|
|
help
|
|
If you have a machine based on a STM32 F4, F7, H7 or MP1 SOC
|
|
you can enable its onboard serial ports, say Y to this option.
|
|
If unsure, say N.
|
|
|
|
config ZYNQ_SERIAL
|
|
bool "Cadence (Xilinx Zynq) UART support"
|
|
depends on DM_SERIAL && (MICROBLAZE || ARCH_ZYNQ || ARCH_ZYNQMP || ARCH_ZYNQMP_R5)
|
|
help
|
|
This driver supports the Cadence UART. It is found e.g. in Xilinx
|
|
Zynq/ZynqMP.
|
|
|
|
config MPC8XX_CONS
|
|
bool "Console driver for MPC8XX"
|
|
depends on MPC8xx
|
|
default y
|
|
|
|
choice
|
|
prompt "Console port"
|
|
default 8xx_CONS_SMC1
|
|
depends on MPC8XX_CONS
|
|
help
|
|
Depending on board, select one serial port
|
|
(CONFIG_8xx_CONS_SMC1 or CONFIG_8xx_CONS_SMC2)
|
|
|
|
config 8xx_CONS_SMC1
|
|
bool "SMC1"
|
|
|
|
config 8xx_CONS_SMC2
|
|
bool "SMC2"
|
|
|
|
endchoice
|
|
|
|
config SYS_SMC_RXBUFLEN
|
|
int "Console Rx buffer length"
|
|
depends on MPC8XX_CONS
|
|
default 1
|
|
help
|
|
With CONFIG_SYS_SMC_RXBUFLEN it is possible to define
|
|
the maximum receive buffer length for the SMC.
|
|
This option is actual only for 8xx possible.
|
|
If using CONFIG_SYS_SMC_RXBUFLEN also CONFIG_SYS_MAXIDLE
|
|
must be defined, to setup the maximum idle timeout for
|
|
the SMC.
|
|
|
|
config SYS_MAXIDLE
|
|
int "maximum idle timeout"
|
|
depends on MPC8XX_CONS
|
|
default 0
|
|
|
|
config SYS_BRGCLK_PRESCALE
|
|
int "BRG Clock Prescale"
|
|
depends on MPC8XX_CONS
|
|
default 1
|
|
|
|
config SYS_SDSR
|
|
hex "SDSR Value"
|
|
depends on MPC8XX_CONS
|
|
default 0x83
|
|
|
|
config SYS_SDMR
|
|
hex "SDMR Value"
|
|
depends on MPC8XX_CONS
|
|
default 0
|
|
|
|
endmenu
|