X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=drivers%2Fserial%2FKconfig;h=1fc287ee98ec83c4e8c952d65e40578faa0619b0;hb=a4bb9b3636fe6dfd1cadaf34c42f4fb3b1ebe46c;hp=a0b6e02b5462e5fc515a28d7f40b04a46c22018d;hpb=5aa7bece1045c28806ce919099616ebe8fa63325;p=u-boot diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig index a0b6e02b54..1fc287ee98 100644 --- a/drivers/serial/Kconfig +++ b/drivers/serial/Kconfig @@ -1,12 +1,226 @@ +# +# 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 help - If you want to use driver model for serial drivers, say Y. - To use legacy serial drivers, say N. + 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_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_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. + +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 " " 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 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 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 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 - Support for the on-chip UARTs on the Panasonic UniPhier platform. + 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. + +endmenu