1# 2# Serial device configuration 3# 4 5menu "Serial drivers" 6 7config 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 16config 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 27config 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 37config 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 47config 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 58config 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 67config SERIAL_RX_BUFFER 68 bool "Enable RX buffer for serial input" 69 depends on DM_SERIAL 70 help 71 Enable RX buffer support for the serial driver. This enables 72 pasting longer strings, even when the RX FIFO of the UART is 73 not big enough (e.g. 16 bytes on the normal NS16550). 74 75config SERIAL_RX_BUFFER_SIZE 76 int "RX buffer size" 77 depends on SERIAL_RX_BUFFER 78 default 256 79 help 80 The size of the RX buffer (needs to be power of 2) 81 82config SPL_DM_SERIAL 83 bool "Enable Driver Model for serial drivers in SPL" 84 depends on DM_SERIAL 85 default y if SPL && DM_SERIAL 86 help 87 Enable driver model for serial in SPL. This replaces 88 drivers/serial/serial.c with the serial uclass, which 89 implements serial_putc() etc. The uclass interface is 90 defined in include/serial.h. 91 92config TPL_DM_SERIAL 93 bool "Enable Driver Model for serial drivers in TPL" 94 depends on DM_SERIAL 95 default y if TPL && DM_SERIAL 96 help 97 Enable driver model for serial in TPL. This replaces 98 drivers/serial/serial.c with the serial uclass, which 99 implements serial_putc() etc. The uclass interface is 100 defined in include/serial.h. 101 102config DEBUG_UART 103 bool "Enable an early debug UART for debugging" 104 help 105 The debug UART is intended for use very early in U-Boot to debug 106 problems when an ICE or other debug mechanism is not available. 107 108 To use it you should: 109 - Make sure your UART supports this interface 110 - Enable CONFIG_DEBUG_UART 111 - Enable the CONFIG for your UART to tell it to provide this interface 112 (e.g. CONFIG_DEBUG_UART_NS16550) 113 - Define the required settings as needed (see below) 114 - Call debug_uart_init() before use 115 - Call debug_uart_putc() to output a character 116 117 Depending on your platform it may be possible to use this UART before 118 a stack is available. 119 120 If your UART does not support this interface you can probably add 121 support quite easily. Remember that you cannot use driver model and 122 it is preferred to use no stack. 123 124 You must not use this UART once driver model is working and the 125 serial drivers are up and running (done in serial_init()). Otherwise 126 the drivers may conflict and you will get strange output. 127 128choice 129 prompt "Select which UART will provide the debug UART" 130 depends on DEBUG_UART 131 default DEBUG_UART_NS16550 132 133config DEBUG_UART_ALTERA_JTAGUART 134 bool "Altera JTAG UART" 135 help 136 Select this to enable a debug UART using the altera_jtag_uart driver. 137 You will need to provide parameters to make this work. The driver will 138 be available until the real driver model serial is running. 139 140config DEBUG_UART_ALTERA_UART 141 bool "Altera UART" 142 help 143 Select this to enable a debug UART using the altera_uart driver. 144 You will need to provide parameters to make this work. The driver will 145 be available until the real driver model serial is running. 146 147config DEBUG_UART_AR933X 148 bool "QCA/Atheros ar933x" 149 depends on AR933X_UART 150 help 151 Select this to enable a debug UART using the ar933x uart driver. 152 You will need to provide parameters to make this work. The 153 driver will be available until the real driver model serial is 154 running. 155 156config DEBUG_UART_ATMEL 157 bool "Atmel USART" 158 help 159 Select this to enable a debug UART using the atmel usart 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 163config DEBUG_UART_BCM6345 164 bool "BCM6345 UART" 165 depends on BCM6345_SERIAL 166 help 167 Select this to enable a debug UART on BCM6345 SoCs. You 168 will need to provide parameters to make this work. The driver will 169 be available until the real driver model serial is running. 170 171config DEBUG_UART_NS16550 172 bool "ns16550" 173 help 174 Select this to enable a debug UART using the ns16550 driver. You 175 will need to provide parameters to make this work. The driver will 176 be available until the real driver model serial is running. 177 178config DEBUG_EFI_CONSOLE 179 bool "EFI" 180 depends on EFI_APP 181 help 182 Select this to enable a debug console which calls back to EFI to 183 output to the console. This can be useful for early debugging of 184 U-Boot when running on top of EFI (Extensive Firmware Interface). 185 This is a type of BIOS used by PCs. 186 187config DEBUG_UART_S5P 188 bool "Samsung S5P" 189 help 190 Select this to enable a debug UART using the serial_s5p driver. You 191 will need to provide parameters to make this work. The driver will 192 be available until the real driver-model serial is running. 193 194config DEBUG_UART_MESON 195 bool "Amlogic Meson" 196 depends on MESON_SERIAL 197 help 198 Select this to enable a debug UART using the serial_meson driver. You 199 will need to provide parameters to make this work. The driver will 200 be available until the real driver-model serial is running. 201 202config DEBUG_UART_UARTLITE 203 bool "Xilinx Uartlite" 204 help 205 Select this to enable a debug UART using the serial_uartlite driver. 206 You will need to provide parameters to make this work. The driver will 207 be available until the real driver-model serial is running. 208 209config DEBUG_UART_ARM_DCC 210 bool "ARM DCC" 211 help 212 Select this to enable a debug UART using the ARM JTAG DCC port. 213 The DCC port can be used for very early debugging and doesn't require 214 any additional setting like address/baudrate/clock. On systems without 215 any serial interface this is the easiest way how to get console. 216 Every ARM core has own DCC port which is the part of debug interface. 217 This port is available at least on ARMv6, ARMv7, ARMv8 and XScale 218 architectures. 219 220config DEBUG_MVEBU_A3700_UART 221 bool "Marvell Armada 3700" 222 help 223 Select this to enable a debug UART using the serial_mvebu 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 227config DEBUG_UART_ZYNQ 228 bool "Xilinx Zynq" 229 help 230 Select this to enable a debug UART using the serial_zynq driver. You 231 will need to provide parameters to make this work. The driver will 232 be available until the real driver-model serial is running. 233 234config DEBUG_UART_APBUART 235 depends on LEON3 236 bool "Gaisler APBUART" 237 help 238 Select this to enable a debug UART using the serial_leon3 driver. You 239 will need to provide parameters to make this work. The driver will 240 be available until the real driver model serial is running. 241 242config DEBUG_UART_PL010 243 bool "pl010" 244 help 245 Select this to enable a debug UART using the pl01x driver with the 246 PL010 UART type. You will need to provide parameters to make this 247 work. The driver will be available until the real driver model 248 serial is running. 249 250config DEBUG_UART_PL011 251 bool "pl011" 252 help 253 Select this to enable a debug UART using the pl01x driver with the 254 PL011 UART type. You will need to provide parameters to make this 255 work. The driver will be available until the real driver model 256 serial is running. 257 258config DEBUG_UART_PIC32 259 bool "Microchip PIC32" 260 depends on PIC32_SERIAL 261 help 262 Select this to enable a debug UART using the serial_pic32 driver. You 263 will need to provide parameters to make this work. The driver will 264 be available until the real driver model serial is running. 265 266config DEBUG_UART_MXC 267 bool "IMX Serial port" 268 depends on MXC_UART 269 help 270 Select this to enable a debug UART using the serial_mxc driver. You 271 will need to provide parameters to make this work. The driver will 272 be available until the real driver model serial is running. 273 274config DEBUG_UART_UNIPHIER 275 bool "UniPhier on-chip UART" 276 depends on ARCH_UNIPHIER 277 help 278 Select this to enable a debug UART using the UniPhier on-chip UART. 279 You will need to provide DEBUG_UART_BASE to make this work. The 280 driver will be available until the real driver-model serial is 281 running. 282 283config DEBUG_UART_OMAP 284 bool "OMAP uart" 285 help 286 Select this to enable a debug UART using the omap ns16550 driver. 287 You will need to provide parameters to make this work. The driver 288 will be available until the real driver model serial is running. 289 290endchoice 291 292config DEBUG_UART_BASE 293 hex "Base address of UART" 294 depends on DEBUG_UART 295 help 296 This is the base address of your UART for memory-mapped UARTs. 297 298 A default should be provided by your board, but if not you will need 299 to use the correct value here. 300 301config DEBUG_UART_CLOCK 302 int "UART input clock" 303 depends on DEBUG_UART 304 help 305 The UART input clock determines the speed of the internal UART 306 circuitry. The baud rate is derived from this by dividing the input 307 clock down. 308 309 A default should be provided by your board, but if not you will need 310 to use the correct value here. 311 312config DEBUG_UART_SHIFT 313 int "UART register shift" 314 depends on DEBUG_UART 315 default 0 if DEBUG_UART 316 help 317 Some UARTs (notably ns16550) support different register layouts 318 where the registers are spaced either as bytes, words or some other 319 value. Use this value to specify the shift to use, where 0=byte 320 registers, 2=32-bit word registers, etc. 321 322config DEBUG_UART_BOARD_INIT 323 bool "Enable board-specific debug UART init" 324 depends on DEBUG_UART 325 help 326 Some boards need to set things up before the debug UART can be used. 327 On these boards a call to debug_uart_init() is insufficient. When 328 this option is enabled, the function board_debug_uart_init() will 329 be called when debug_uart_init() is called. You can put any code 330 here that is needed to set up the UART ready for use, such as set 331 pin multiplexing or enable clocks. 332 333config DEBUG_UART_ANNOUNCE 334 bool "Show a message when the debug UART starts up" 335 depends on DEBUG_UART 336 help 337 Enable this option to show a message when the debug UART is ready 338 for use. You will see a message like "<debug_uart> " as soon as 339 U-Boot has the UART ready for use (i.e. your code calls 340 debug_uart_init()). This can be useful just as a check that 341 everything is working. 342 343config DEBUG_UART_SKIP_INIT 344 bool "Skip UART initialization" 345 help 346 Select this if the UART you want to use for debug output is already 347 initialized by the time U-Boot starts its execution. 348 349config ALTERA_JTAG_UART 350 bool "Altera JTAG UART support" 351 depends on DM_SERIAL 352 help 353 Select this to enable an JTAG UART for Altera devices.The JTAG UART 354 core implements a method to communicate serial character streams 355 between a host PC and a Qsys system on an Altera FPGA. Please find 356 details on the "Embedded Peripherals IP User Guide" of Altera. 357 358config ALTERA_JTAG_UART_BYPASS 359 bool "Bypass output when no connection" 360 depends on ALTERA_JTAG_UART 361 help 362 Bypass console output and keep going even if there is no JTAG 363 terminal connection with the host. The console output will resume 364 once the JTAG terminal is connected. Without the bypass, the console 365 output will wait forever until a JTAG terminal is connected. If you 366 not are sure, say Y. 367 368config ALTERA_UART 369 bool "Altera UART support" 370 depends on DM_SERIAL 371 help 372 Select this to enable an UART for Altera devices. Please find 373 details on the "Embedded Peripherals IP User Guide" of Altera. 374 375config AR933X_UART 376 bool "QCA/Atheros ar933x UART support" 377 depends on DM_SERIAL && SOC_AR933X 378 help 379 Select this to enable UART support for QCA/Atheros ar933x 380 devices. This driver uses driver model and requires a device 381 tree binding to operate, please refer to the document at 382 doc/device-tree-bindings/serial/qca,ar9330-uart.txt. 383 384config ATMEL_USART 385 bool "Atmel USART support" 386 help 387 Select this to enable USART support for Atmel SoCs. It can be 388 configured in the device tree, and input clock frequency can 389 be got from the clk node. 390 391config BCM6345_SERIAL 392 bool "Support for BCM6345 UART" 393 depends on DM_SERIAL && ARCH_BMIPS 394 help 395 Select this to enable UART on BCM6345 SoCs. 396 397config FSL_LPUART 398 bool "Freescale LPUART support" 399 help 400 Select this to enable a Low Power UART for Freescale VF610 and 401 QorIQ Layerscape devices. 402 403config MVEBU_A3700_UART 404 bool "UART support for Armada 3700" 405 default n 406 help 407 Choose this option to add support for UART driver on the Marvell 408 Armada 3700 SoC. The base address is configured via DT. 409 410config MXC_UART 411 bool "IMX serial port support" 412 depends on MX5 || MX6 413 help 414 If you have a machine based on a Motorola IMX CPU you 415 can enable its onboard serial port by enabling this option. 416 417config NULLDEV_SERIAL 418 bool "Null serial device" 419 help 420 Select this to enable null serial device support. A null serial 421 device merely acts as a placeholder for a serial device and does 422 nothing for all it's operation. 423 424config PIC32_SERIAL 425 bool "Support for Microchip PIC32 on-chip UART" 426 depends on DM_SERIAL && MACH_PIC32 427 default y 428 help 429 Support for the UART found on Microchip PIC32 SoC's. 430 431config SYS_NS16550 432 bool "NS16550 UART or compatible" 433 help 434 Support NS16550 UART or compatible. This can be enabled in the 435 device tree with the correct input clock frequency. If the input 436 clock frequency is not defined in the device tree, the macro 437 CONFIG_SYS_NS16550_CLK defined in a legacy board header file will 438 be used. It can be a constant or a function to get clock, eg, 439 get_serial_clock(). 440 441config INTEL_MID_SERIAL 442 bool "Intel MID platform UART support" 443 depends on DM_SERIAL && OF_CONTROL 444 depends on INTEL_MID 445 select SYS_NS16550 446 help 447 Select this to enable a UART for Intel MID platforms. 448 This uses the ns16550 driver as a library. 449 450config ROCKCHIP_SERIAL 451 bool "Rockchip on-chip UART support" 452 depends on DM_SERIAL && SPL_OF_PLATDATA 453 help 454 Select this to enable a debug UART for Rockchip devices when using 455 CONFIG_SPL_OF_PLATDATA (i.e. a compiled-in device tree replacemenmt). 456 This uses the ns16550 driver, converting the platdata from of-platdata 457 to the ns16550 format. 458 459config SANDBOX_SERIAL 460 bool "Sandbox UART support" 461 depends on SANDBOX 462 help 463 Select this to enable a seral UART for sandbox. This is required to 464 operate correctly, otherwise you will see no serial output from 465 sandbox. The emulated UART will display to the console and console 466 input will be fed into the UART. This allows you to interact with 467 U-Boot. 468 469 The operation of the console is controlled by the -t command-line 470 flag. In raw mode, U-Boot sees all characters from the terminal 471 before they are processed, including Ctrl-C. In cooked mode, Ctrl-C 472 is processed by the terminal, and terminates U-Boot. Valid options 473 are: 474 475 -t raw-with-sigs Raw mode, Ctrl-C will terminate U-Boot 476 -t raw Raw mode, Ctrl-C is processed by U-Boot 477 -t cooked Cooked mode, Ctrl-C terminates 478 479config SCIF_CONSOLE 480 bool "Renesas SCIF UART support" 481 depends on SH || ARCH_RMOBILE 482 help 483 Select this to enable Renesas SCIF UART. To operate serial ports 484 on systems with RCar or SH SoCs, say Y to this option. If unsure, 485 say N. 486 487config UNIPHIER_SERIAL 488 bool "Support for UniPhier on-chip UART" 489 depends on ARCH_UNIPHIER 490 default y 491 help 492 If you have a UniPhier based board and want to use the on-chip 493 serial ports, say Y to this option. If unsure, say N. 494 495config XILINX_UARTLITE 496 bool "Xilinx Uarlite support" 497 depends on DM_SERIAL && (MICROBLAZE || ARCH_ZYNQ || ARCH_ZYNQMP || 4xx) 498 help 499 If you have a Xilinx based board and want to use the uartlite 500 serial ports, say Y to this option. If unsure, say N. 501 502config MESON_SERIAL 503 bool "Support for Amlogic Meson UART" 504 depends on DM_SERIAL && ARCH_MESON 505 help 506 If you have an Amlogic Meson based board and want to use the on-chip 507 serial ports, say Y to this option. If unsure, say N. 508 509config MSM_SERIAL 510 bool "Qualcomm on-chip UART" 511 depends on DM_SERIAL 512 help 513 Support Data Mover UART used on Qualcomm Snapdragon SoCs. 514 It should support all Qualcomm devices with UARTDM version 1.4, 515 for example APQ8016 and MSM8916. 516 Single baudrate is supported in current implementation (115200). 517 518config PXA_SERIAL 519 bool "PXA serial port support" 520 help 521 If you have a machine based on a Marvell XScale PXA2xx CPU you 522 can enable its onboard serial ports by enabling this option. 523 524config STI_ASC_SERIAL 525 bool "STMicroelectronics on-chip UART" 526 depends on DM_SERIAL && ARCH_STI 527 help 528 Select this to enable Asynchronous Serial Controller available 529 on STiH410 SoC. This is a basic implementation, it supports 530 following baudrate 9600, 19200, 38400, 57600 and 115200. 531 532config STM32X7_SERIAL 533 bool "STMicroelectronics STM32 SoCs on-chip UART" 534 depends on DM_SERIAL && (STM32F4 || STM32F7 || STM32H7) 535 help 536 If you have a machine based on a STM32 F4, F7 or H7 SoC you can 537 enable its onboard serial ports, say Y to this option. 538 If unsure, say N. 539 540config MPC8XX_CONS 541 bool "Console driver for MPC8XX" 542 depends on 8xx 543 default y 544 545choice 546 prompt "Console port" 547 default 8xx_CONS_SMC1 548 depends on MPC8XX_CONS 549 help 550 Depending on board, select one serial port 551 (CONFIG_8xx_CONS_SMC1 or CONFIG_8xx_CONS_SMC2) 552 553config 8xx_CONS_SMC1 554 bool "SMC1" 555 556config 8xx_CONS_SMC2 557 bool "SMC2" 558 559endchoice 560 561config SYS_SMC_RXBUFLEN 562 int "Console Rx buffer length" 563 depends on MPC8XX_CONS 564 default 1 565 help 566 With CONFIG_SYS_SMC_RXBUFLEN it is possible to define 567 the maximum receive buffer length for the SMC. 568 This option is actual only for 8xx possible. 569 If using CONFIG_SYS_SMC_RXBUFLEN also CONFIG_SYS_MAXIDLE 570 must be defined, to setup the maximum idle timeout for 571 the SMC. 572 573config SYS_MAXIDLE 574 int "maximum idle timeout" 575 depends on MPC8XX_CONS 576 default 0 577 578config SYS_BRGCLK_PRESCALE 579 int "BRG Clock Prescale" 580 depends on MPC8XX_CONS 581 default 1 582 583config SYS_SDSR 584 hex "SDSR Value" 585 depends on MPC8XX_CONS 586 default 0x83 587 588config SYS_SDMR 589 hex "SDMR Value" 590 depends on MPC8XX_CONS 591 default 0 592 593endmenu 594