X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=drivers%2Fserial%2FKconfig;h=ddb725d326bc276a6b73c8e192b739120beabef0;hb=13a3972585af60ec367d209cedbd3601e0c77467;hp=c94353ba6acf44ac0f1c5360f11a8da86ce7f649;hpb=f94a1bed07e2af1c46ddcf2046cddd979ebfd994;p=oweals%2Fu-boot.git diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig index c94353ba6a..ddb725d326 100644 --- a/drivers/serial/Kconfig +++ b/drivers/serial/Kconfig @@ -1,3 +1,20 @@ +# +# 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 DM_SERIAL bool "Enable Driver Model for serial drivers" depends on DM @@ -7,8 +24,135 @@ config DM_SERIAL 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 + +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. + +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 ROCKCHIP_SERIAL + bool "Rockchip on-chip UART support" + depends on ARCH_ROCKCHIP && DM_SERIAL + help + Select this to enable a debug UART for Rockchip devices. This uses + the ns16550 driver. You will need to #define CONFIG_SYS_NS16550 in + your board config header. The clock input is automatically set to + use the oscillator (24MHz). + +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 "UniPhier on-chip UART support" - depends on ARCH_UNIPHIER && DM_SERIAL + bool "Support for UniPhier on-chip UART" + depends on ARCH_UNIPHIER + 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 X86_SERIAL + bool "Support for 16550 serial port on x86 machines" + depends on X86 + default y help - Support for the on-chip UARTs on the Panasonic UniPhier platform. + Most x86 machines have a ns16550 UART or compatible. This can be + enabled in the device tree with the correct input clock frequency + provided (default 1843200). Enable this to obtain serial console + output. + +endmenu