drivers/serial/Kconfig

   1 #
   2 # Serial device configuration
   3 #
   4
   5 menu "Serial drivers"
   6
   7 config BAUDRATE
   8         int "Default baudrate"
   9         default 115200
  10         help
  11           Select a default baudrate, where "default" has a driver-specific
  12           meaning of either setting the baudrate for the early debug UART
  13           in the SPL stage (most drivers) or for choosing a default baudrate
  14           in the absence of an environment setting (serial_mxc.c).
  15
  16 config REQUIRE_SERIAL_CONSOLE
  17         bool "Require a serial port for console"
  18         # Running without a serial console is not supported by the
  19         # non-dm serial code
  20         depends on DM_SERIAL
  21         default y
  22         help
  23           Require a serial port for the console, and panic if none is found
  24           during serial port initialization (default y). Set this to n on
  25           boards which have no debug serial port whatsoever.
  26
  27 config SERIAL_PRESENT
  28         bool "Provide a serial driver"
  29         depends on DM_SERIAL
  30         default y
  31         help
  32           In very space-constrained devices even the full UART driver is too
  33           large. In this case the debug UART can still be used in some cases.
  34           This option enables the full UART in U-Boot, so if is it disabled,
  35           the full UART driver will be omitted, thus saving space.
  36
  37 config SPL_SERIAL_PRESENT
  38         bool "Provide a serial driver in SPL"
  39         depends on DM_SERIAL
  40         default y
  41         help
  42           In very space-constrained devices even the full UART driver is too
  43           large. In this case the debug UART can still be used in some cases.
  44           This option enables the full UART in SPL, so if is it disabled,
  45           the full UART driver will be omitted, thus saving space.
  46
  47 config CONS_INDEX
  48         int "UART used for console"
  49         depends on ARCH_SUNXI
  50         default 2 if MACH_SUN5I
  51         default 5 if MACH_SUN8I_A23 || MACH_SUN8I_A33
  52         default 1
  53         help
  54           Configures the console index.
  55           For Allwinner SoC., default values are 2 for SUN5I and 5 for A23/A33.
  56           Otherwise, the index equals 1.
  57
  58 config DM_SERIAL
  59         bool "Enable Driver Model for serial drivers"
  60         depends on DM
  61         help
  62           Enable driver model for serial. This replaces
  63           drivers/serial/serial.c with the serial uclass, which
  64           implements serial_putc() etc. The uclass interface is
  65           defined in include/serial.h.
  66
  67 config SPL_DM_SERIAL
  68         bool "Enable Driver Model for serial drivers in SPL"
  69         depends on DM_SERIAL
  70         default y if SPL && DM_SERIAL
  71         help
  72           Enable driver model for serial in SPL. This replaces
  73           drivers/serial/serial.c with the serial uclass, which
  74           implements serial_putc() etc. The uclass interface is
  75           defined in include/serial.h.
  76
  77 config TPL_DM_SERIAL
  78         bool "Enable Driver Model for serial drivers in TPL"
  79         depends on DM_SERIAL
  80         default y if TPL && DM_SERIAL
  81         help
  82           Enable driver model for serial in TPL. This replaces
  83           drivers/serial/serial.c with the serial uclass, which
  84           implements serial_putc() etc. The uclass interface is
  85           defined in include/serial.h.
  86
  87 config DEBUG_UART
  88         bool "Enable an early debug UART for debugging"
  89         help
  90           The debug UART is intended for use very early in U-Boot to debug
  91           problems when an ICE or other debug mechanism is not available.
  92
  93           To use it you should:
  94           - Make sure your UART supports this interface
  95           - Enable CONFIG_DEBUG_UART
  96           - Enable the CONFIG for your UART to tell it to provide this interface
  97                 (e.g. CONFIG_DEBUG_UART_NS16550)
  98           - Define the required settings as needed (see below)
  99           - Call debug_uart_init() before use
 100           - Call debug_uart_putc() to output a character
 101
 102           Depending on your platform it may be possible to use this UART before
 103           a stack is available.
 104
 105           If your UART does not support this interface you can probably add
 106           support quite easily. Remember that you cannot use driver model and
 107           it is preferred to use no stack.
 108
 109           You must not use this UART once driver model is working and the
 110           serial drivers are up and running (done in serial_init()). Otherwise
 111           the drivers may conflict and you will get strange output.
 112
 113 choice
 114         prompt "Select which UART will provide the debug UART"
 115         depends on DEBUG_UART
 116         default DEBUG_UART_NS16550
 117
 118 config DEBUG_UART_ALTERA_JTAGUART
 119         bool "Altera JTAG UART"
 120         help
 121           Select this to enable a debug UART using the altera_jtag_uart driver.
 122           You will need to provide parameters to make this work. The driver will
 123           be available until the real driver model serial is running.
 124
 125 config DEBUG_UART_ALTERA_UART
 126         bool "Altera UART"
 127         help
 128           Select this to enable a debug UART using the altera_uart driver.
 129           You will need to provide parameters to make this work. The driver will
 130           be available until the real driver model serial is running.
 131
 132 config DEBUG_UART_AR933X
 133         bool "QCA/Atheros ar933x"
 134         depends on AR933X_UART
 135         help
 136           Select this to enable a debug UART using the ar933x uart driver.
 137           You will need to provide parameters to make this work. The
 138           driver will be available until the real driver model serial is
 139           running.
 140
 141 config DEBUG_UART_ATMEL
 142         bool "Atmel USART"
 143         help
 144           Select this to enable a debug UART using the atmel usart driver. You
 145           will need to provide parameters to make this work. The driver will
 146           be available until the real driver-model serial is running.
 147
 148 config DEBUG_UART_BCM6345
 149         bool "BCM6345 UART"
 150         depends on BCM6345_SERIAL
 151         help
 152           Select this to enable a debug UART on BCM6345 SoCs. You
 153           will need to provide parameters to make this work. The driver will
 154           be available until the real driver model serial is running.
 155
 156 config DEBUG_UART_NS16550
 157         bool "ns16550"
 158         help
 159           Select this to enable a debug UART using the ns16550 driver. You
 160           will need to provide parameters to make this work. The driver will
 161           be available until the real driver model serial is running.
 162
 163 config DEBUG_EFI_CONSOLE
 164         bool "EFI"
 165         depends on EFI_APP
 166         help
 167           Select this to enable a debug console which calls back to EFI to
 168           output to the console. This can be useful for early debugging of
 169           U-Boot when running on top of EFI (Extensive Firmware Interface).
 170           This is a type of BIOS used by PCs.
 171
 172 config DEBUG_UART_S5P
 173         bool "Samsung S5P"
 174         help
 175           Select this to enable a debug UART using the serial_s5p driver. You
 176           will need to provide parameters to make this work. The driver will
 177           be available until the real driver-model serial is running.
 178
 179 config DEBUG_UART_MESON
 180         bool "Amlogic Meson"
 181         depends on MESON_SERIAL
 182         help
 183           Select this to enable a debug UART using the serial_meson driver. You
 184           will need to provide parameters to make this work. The driver will
 185           be available until the real driver-model serial is running.
 186
 187 config DEBUG_UART_UARTLITE
 188         bool "Xilinx Uartlite"
 189         help
 190           Select this to enable a debug UART using the serial_uartlite driver.
 191           You will need to provide parameters to make this work. The driver will
 192           be available until the real driver-model serial is running.
 193
 194 config DEBUG_UART_ARM_DCC
 195         bool "ARM DCC"
 196         help
 197           Select this to enable a debug UART using the ARM JTAG DCC port.
 198           The DCC port can be used for very early debugging and doesn't require
 199           any additional setting like address/baudrate/clock. On systems without
 200           any serial interface this is the easiest way how to get console.
 201           Every ARM core has own DCC port which is the part of debug interface.
 202           This port is available at least on ARMv6, ARMv7, ARMv8 and XScale
 203           architectures.
 204
 205 config DEBUG_MVEBU_A3700_UART
 206         bool "Marvell Armada 3700"
 207         help
 208           Select this to enable a debug UART using the serial_mvebu driver. You
 209           will need to provide parameters to make this work. The driver will
 210           be available until the real driver-model serial is running.
 211
 212 config DEBUG_UART_ZYNQ
 213         bool "Xilinx Zynq"
 214         help
 215           Select this to enable a debug UART using the serial_zynq driver. You
 216           will need to provide parameters to make this work. The driver will
 217           be available until the real driver-model serial is running.
 218
 219 config DEBUG_UART_APBUART
 220         depends on LEON3
 221         bool "Gaisler APBUART"
 222         help
 223           Select this to enable a debug UART using the serial_leon3 driver. You
 224           will need to provide parameters to make this work. The driver will
 225           be available until the real driver model serial is running.
 226
 227 config DEBUG_UART_PL010
 228         bool "pl010"
 229         help
 230           Select this to enable a debug UART using the pl01x driver with the
 231           PL010 UART type. You will need to provide parameters to make this
 232           work. The driver will be available until the real driver model
 233           serial is running.
 234
 235 config DEBUG_UART_PL011
 236         bool "pl011"
 237         help
 238           Select this to enable a debug UART using the pl01x driver with the
 239           PL011 UART type. You will need to provide parameters to make this
 240           work. The driver will be available until the real driver model
 241           serial is running.
 242
 243 config DEBUG_UART_PIC32
 244         bool "Microchip PIC32"
 245         depends on PIC32_SERIAL
 246         help
 247           Select this to enable a debug UART using the serial_pic32 driver. You
 248           will need to provide parameters to make this work. The driver will
 249           be available until the real driver model serial is running.
 250
 251 config DEBUG_UART_UNIPHIER
 252         bool "UniPhier on-chip UART"
 253         depends on ARCH_UNIPHIER
 254         help
 255           Select this to enable a debug UART using the UniPhier on-chip UART.
 256           You will need to provide DEBUG_UART_BASE to make this work.  The
 257           driver will be available until the real driver-model serial is
 258           running.
 259
 260 config DEBUG_UART_OMAP
 261         bool "OMAP uart"
 262         help
 263           Select this to enable a debug UART using the omap ns16550 driver.
 264           You will need to provide parameters to make this work. The driver
 265           will be available until the real driver model serial is running.
 266
 267 endchoice
 268
 269 config DEBUG_UART_BASE
 270         hex "Base address of UART"
 271         depends on DEBUG_UART
 272         help
 273           This is the base address of your UART for memory-mapped UARTs.
 274
 275           A default should be provided by your board, but if not you will need
 276           to use the correct value here.
 277
 278 config DEBUG_UART_CLOCK
 279         int "UART input clock"
 280         depends on DEBUG_UART
 281         help
 282           The UART input clock determines the speed of the internal UART
 283           circuitry. The baud rate is derived from this by dividing the input
 284           clock down.
 285
 286           A default should be provided by your board, but if not you will need
 287           to use the correct value here.
 288
 289 config DEBUG_UART_SHIFT
 290         int "UART register shift"
 291         depends on DEBUG_UART
 292         default 0 if DEBUG_UART
 293         help
 294           Some UARTs (notably ns16550) support different register layouts
 295           where the registers are spaced either as bytes, words or some other
 296           value. Use this value to specify the shift to use, where 0=byte
 297           registers, 2=32-bit word registers, etc.
 298
 299 config DEBUG_UART_BOARD_INIT
 300         bool "Enable board-specific debug UART init"
 301         depends on DEBUG_UART
 302         help
 303           Some boards need to set things up before the debug UART can be used.
 304           On these boards a call to debug_uart_init() is insufficient. When
 305           this option is enabled, the function board_debug_uart_init() will
 306           be called when debug_uart_init() is called. You can put any code
 307           here that is needed to set up the UART ready for use, such as set
 308           pin multiplexing or enable clocks.
 309
 310 config DEBUG_UART_ANNOUNCE
 311         bool "Show a message when the debug UART starts up"
 312         depends on DEBUG_UART
 313         help
 314           Enable this option to show a message when the debug UART is ready
 315           for use. You will see a message like "<debug_uart> " as soon as
 316           U-Boot has the UART ready for use (i.e. your code calls
 317           debug_uart_init()). This can be useful just as a check that
 318           everything is working.
 319
 320 config DEBUG_UART_SKIP_INIT
 321         bool "Skip UART initialization"
 322         help
 323           Select this if the UART you want to use for debug output is already
 324           initialized by the time U-Boot starts its execution.
 325
 326 config ALTERA_JTAG_UART
 327         bool "Altera JTAG UART support"
 328         depends on DM_SERIAL
 329         help
 330           Select this to enable an JTAG UART for Altera devices.The JTAG UART
 331           core implements a method to communicate serial character streams
 332           between a host PC and a Qsys system on an Altera FPGA. Please find
 333           details on the "Embedded Peripherals IP User Guide" of Altera.
 334
 335 config ALTERA_JTAG_UART_BYPASS
 336         bool "Bypass output when no connection"
 337         depends on ALTERA_JTAG_UART
 338         help
 339           Bypass console output and keep going even if there is no JTAG
 340           terminal connection with the host. The console output will resume
 341           once the JTAG terminal is connected. Without the bypass, the console
 342           output will wait forever until a JTAG terminal is connected. If you
 343           not are sure, say Y.
 344
 345 config ALTERA_UART
 346         bool "Altera UART support"
 347         depends on DM_SERIAL
 348         help
 349           Select this to enable an UART for Altera devices. Please find
 350           details on the "Embedded Peripherals IP User Guide" of Altera.
 351
 352 config AR933X_UART
 353         bool "QCA/Atheros ar933x UART support"
 354         depends on DM_SERIAL && SOC_AR933X
 355         help
 356           Select this to enable UART support for QCA/Atheros ar933x
 357           devices. This driver uses driver model and requires a device
 358           tree binding to operate, please refer to the document at
 359           doc/device-tree-bindings/serial/qca,ar9330-uart.txt.
 360
 361 config ATMEL_USART
 362         bool "Atmel USART support"
 363         help
 364           Select this to enable USART support for Atmel SoCs. It can be
 365           configured in the device tree, and input clock frequency can
 366           be got from the clk node.
 367
 368 config BCM6345_SERIAL
 369         bool "Support for BCM6345 UART"
 370         depends on DM_SERIAL && ARCH_BMIPS
 371         help
 372           Select this to enable UART on BCM6345 SoCs.
 373
 374 config FSL_LPUART
 375         bool "Freescale LPUART support"
 376         help
 377           Select this to enable a Low Power UART for Freescale VF610 and
 378           QorIQ Layerscape devices.
 379
 380 config MVEBU_A3700_UART
 381         bool "UART support for Armada 3700"
 382         default n
 383         help
 384           Choose this option to add support for UART driver on the Marvell
 385           Armada 3700 SoC. The base address is configured via DT.
 386
 387 config MXC_UART
 388         bool "IMX serial port support"
 389         depends on MX5 || MX6
 390         help
 391           If you have a machine based on a Motorola IMX CPU you
 392           can enable its onboard serial port by enabling this option.
 393
 394 config PIC32_SERIAL
 395         bool "Support for Microchip PIC32 on-chip UART"
 396         depends on DM_SERIAL && MACH_PIC32
 397         default y
 398         help
 399           Support for the UART found on Microchip PIC32 SoC's.
 400
 401 config SYS_NS16550
 402         bool "NS16550 UART or compatible"
 403         help
 404           Support NS16550 UART or compatible. This can be enabled in the
 405           device tree with the correct input clock frequency. If the input
 406           clock frequency is not defined in the device tree, the macro
 407           CONFIG_SYS_NS16550_CLK defined in a legacy board header file will
 408           be used. It can be a constant or a function to get clock, eg,
 409           get_serial_clock().
 410
 411 config INTEL_MID_SERIAL
 412         bool "Intel MID platform UART support"
 413         depends on DM_SERIAL && OF_CONTROL
 414         depends on INTEL_MID
 415         select SYS_NS16550
 416         help
 417           Select this to enable a UART for Intel MID platforms.
 418           This uses the ns16550 driver as a library.
 419
 420 config ROCKCHIP_SERIAL
 421         bool "Rockchip on-chip UART support"
 422         depends on DM_SERIAL && SPL_OF_PLATDATA
 423         help
 424           Select this to enable a debug UART for Rockchip devices when using
 425           CONFIG_SPL_OF_PLATDATA (i.e. a compiled-in device tree replacemenmt).
 426           This uses the ns16550 driver, converting the platdata from of-platdata
 427           to the ns16550 format.
 428
 429 config SANDBOX_SERIAL
 430         bool "Sandbox UART support"
 431         depends on SANDBOX
 432         help
 433           Select this to enable a seral UART for sandbox. This is required to
 434           operate correctly, otherwise you will see no serial output from
 435           sandbox. The emulated UART will display to the console and console
 436           input will be fed into the UART. This allows you to interact with
 437           U-Boot.
 438
 439           The operation of the console is controlled by the -t command-line
 440           flag. In raw mode, U-Boot sees all characters from the terminal
 441           before they are processed, including Ctrl-C. In cooked mode, Ctrl-C
 442           is processed by the terminal, and terminates U-Boot. Valid options
 443           are:
 444
 445              -t raw-with-sigs   Raw mode, Ctrl-C will terminate U-Boot
 446              -t raw             Raw mode, Ctrl-C is processed by U-Boot
 447              -t cooked          Cooked mode, Ctrl-C terminates
 448
 449 config UNIPHIER_SERIAL
 450         bool "Support for UniPhier on-chip UART"
 451         depends on ARCH_UNIPHIER
 452         default y
 453         help
 454           If you have a UniPhier based board and want to use the on-chip
 455           serial ports, say Y to this option. If unsure, say N.
 456
 457 config XILINX_UARTLITE
 458         bool "Xilinx Uarlite support"
 459         depends on DM_SERIAL && (MICROBLAZE || ARCH_ZYNQ || ARCH_ZYNQMP || 4xx)
 460         help
 461           If you have a Xilinx based board and want to use the uartlite
 462           serial ports, say Y to this option. If unsure, say N.
 463
 464 config MESON_SERIAL
 465         bool "Support for Amlogic Meson UART"
 466         depends on DM_SERIAL && ARCH_MESON
 467         help
 468           If you have an Amlogic Meson based board and want to use the on-chip
 469           serial ports, say Y to this option. If unsure, say N.
 470
 471 config MSM_SERIAL
 472         bool "Qualcomm on-chip UART"
 473         depends on DM_SERIAL
 474         help
 475           Support Data Mover UART used on Qualcomm Snapdragon SoCs.
 476           It should support all Qualcomm devices with UARTDM version 1.4,
 477           for example APQ8016 and MSM8916.
 478           Single baudrate is supported in current implementation (115200).
 479
 480 config PXA_SERIAL
 481         bool "PXA serial port support"
 482         help
 483           If you have a machine based on a Marvell XScale PXA2xx CPU you
 484           can enable its onboard serial ports by enabling this option.
 485
 486 config STI_ASC_SERIAL
 487         bool "STMicroelectronics on-chip UART"
 488         depends on DM_SERIAL && ARCH_STI
 489         help
 490           Select this to enable Asynchronous Serial Controller available
 491           on STiH410 SoC. This is a basic implementation,  it supports
 492           following baudrate 9600, 19200, 38400, 57600 and 115200.
 493
 494 config MPC8XX_CONS
 495         bool "Console driver for MPC8XX"
 496         depends on 8xx
 497         default y
 498
 499 choice
 500         prompt "Console port"
 501         default 8xx_CONS_SMC1
 502         depends on MPC8XX_CONS
 503         help
 504           Depending on board, select one serial port
 505           (CONFIG_8xx_CONS_SMC1 or CONFIG_8xx_CONS_SMC2)
 506
 507 config 8xx_CONS_SMC1
 508         bool "SMC1"
 509
 510 config 8xx_CONS_SMC2
 511         bool "SMC2"
 512
 513 endchoice
 514
 515 config SYS_SMC_RXBUFLEN
 516         int "Console Rx buffer length"
 517         depends on MPC8XX_CONS
 518         default 1
 519         help
 520           With CONFIG_SYS_SMC_RXBUFLEN it is possible to define
 521           the maximum receive buffer length for the SMC.
 522           This option is actual only for 8xx possible.
 523           If using CONFIG_SYS_SMC_RXBUFLEN also CONFIG_SYS_MAXIDLE
 524           must be defined, to setup the maximum idle timeout for
 525           the SMC.
 526
 527 config SYS_MAXIDLE
 528         int "maximum idle timeout"
 529         depends on MPC8XX_CONS
 530         default 0
 531
 532 config SYS_BRGCLK_PRESCALE
 533         int "BRG Clock Prescale"
 534         depends on MPC8XX_CONS
 535         default 1
 536
 537 config SYS_SDSR
 538         hex "SDSR Value"
 539         depends on MPC8XX_CONS
 540         default 0x83
 541
 542 config SYS_SDMR
 543         hex "SDMR Value"
 544         depends on MPC8XX_CONS
 545         default 0
 546
 547 endmenu