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 SERIAL_SEARCH_ALL 83 bool "Search for serial devices after default one failed" 84 depends on DM_SERIAL 85 help 86 The serial subsystem only searches for a single serial device 87 that was instantiated, but does not check whether it was probed 88 correctly. With this option set, we make successful probing 89 mandatory and search for fallback serial devices if the default 90 device does not work. 91 92 If unsure, say N. 93 94config SPL_DM_SERIAL 95 bool "Enable Driver Model for serial drivers in SPL" 96 depends on DM_SERIAL 97 default y if SPL && DM_SERIAL 98 help 99 Enable driver model for serial in SPL. This replaces 100 drivers/serial/serial.c with the serial uclass, which 101 implements serial_putc() etc. The uclass interface is 102 defined in include/serial.h. 103 104config TPL_DM_SERIAL 105 bool "Enable Driver Model for serial drivers in TPL" 106 depends on DM_SERIAL 107 default y if TPL && DM_SERIAL 108 help 109 Enable driver model for serial in TPL. This replaces 110 drivers/serial/serial.c with the serial uclass, which 111 implements serial_putc() etc. The uclass interface is 112 defined in include/serial.h. 113 114config DEBUG_UART 115 bool "Enable an early debug UART for debugging" 116 help 117 The debug UART is intended for use very early in U-Boot to debug 118 problems when an ICE or other debug mechanism is not available. 119 120 To use it you should: 121 - Make sure your UART supports this interface 122 - Enable CONFIG_DEBUG_UART 123 - Enable the CONFIG for your UART to tell it to provide this interface 124 (e.g. CONFIG_DEBUG_UART_NS16550) 125 - Define the required settings as needed (see below) 126 - Call debug_uart_init() before use 127 - Call debug_uart_putc() to output a character 128 129 Depending on your platform it may be possible to use this UART before 130 a stack is available. 131 132 If your UART does not support this interface you can probably add 133 support quite easily. Remember that you cannot use driver model and 134 it is preferred to use no stack. 135 136 You must not use this UART once driver model is working and the 137 serial drivers are up and running (done in serial_init()). Otherwise 138 the drivers may conflict and you will get strange output. 139 140choice 141 prompt "Select which UART will provide the debug UART" 142 depends on DEBUG_UART 143 default DEBUG_UART_NS16550 144 145config DEBUG_UART_ALTERA_JTAGUART 146 bool "Altera JTAG UART" 147 help 148 Select this to enable a debug UART using the altera_jtag_uart driver. 149 You will need to provide parameters to make this work. The driver will 150 be available until the real driver model serial is running. 151 152config DEBUG_UART_ALTERA_UART 153 bool "Altera UART" 154 help 155 Select this to enable a debug UART using the altera_uart driver. 156 You will need to provide parameters to make this work. The driver will 157 be available until the real driver model serial is running. 158 159config DEBUG_UART_AR933X 160 bool "QCA/Atheros ar933x" 161 depends on AR933X_UART 162 help 163 Select this to enable a debug UART using the ar933x uart driver. 164 You will need to provide parameters to make this work. The 165 driver will be available until the real driver model serial is 166 running. 167 168config DEBUG_UART_ATMEL 169 bool "Atmel USART" 170 help 171 Select this to enable a debug UART using the atmel usart driver. You 172 will need to provide parameters to make this work. The driver will 173 be available until the real driver-model serial is running. 174 175config DEBUG_UART_BCM6345 176 bool "BCM6345 UART" 177 depends on BCM6345_SERIAL 178 help 179 Select this to enable a debug UART on BCM6345 SoCs. You 180 will need to provide parameters to make this work. The driver will 181 be available until the real driver model serial is running. 182 183config DEBUG_UART_NS16550 184 bool "ns16550" 185 help 186 Select this to enable a debug UART using the ns16550 driver. You 187 will need to provide parameters to make this work. The driver will 188 be available until the real driver model serial is running. 189 190config DEBUG_EFI_CONSOLE 191 bool "EFI" 192 depends on EFI_APP 193 help 194 Select this to enable a debug console which calls back to EFI to 195 output to the console. This can be useful for early debugging of 196 U-Boot when running on top of EFI (Extensive Firmware Interface). 197 This is a type of BIOS used by PCs. 198 199config DEBUG_UART_S5P 200 bool "Samsung S5P" 201 help 202 Select this to enable a debug UART using the serial_s5p driver. You 203 will need to provide parameters to make this work. The driver will 204 be available until the real driver-model serial is running. 205 206config DEBUG_UART_MESON 207 bool "Amlogic Meson" 208 depends on MESON_SERIAL 209 help 210 Select this to enable a debug UART using the serial_meson driver. You 211 will need to provide parameters to make this work. The driver will 212 be available until the real driver-model serial is running. 213 214config DEBUG_UART_UARTLITE 215 bool "Xilinx Uartlite" 216 help 217 Select this to enable a debug UART using the serial_uartlite driver. 218 You will need to provide parameters to make this work. The driver will 219 be available until the real driver-model serial is running. 220 221config DEBUG_UART_ARM_DCC 222 bool "ARM DCC" 223 help 224 Select this to enable a debug UART using the ARM JTAG DCC port. 225 The DCC port can be used for very early debugging and doesn't require 226 any additional setting like address/baudrate/clock. On systems without 227 any serial interface this is the easiest way how to get console. 228 Every ARM core has own DCC port which is the part of debug interface. 229 This port is available at least on ARMv6, ARMv7, ARMv8 and XScale 230 architectures. 231 232config DEBUG_MVEBU_A3700_UART 233 bool "Marvell Armada 3700" 234 help 235 Select this to enable a debug UART using the serial_mvebu driver. You 236 will need to provide parameters to make this work. The driver will 237 be available until the real driver-model serial is running. 238 239config DEBUG_UART_ZYNQ 240 bool "Xilinx Zynq" 241 help 242 Select this to enable a debug UART using the serial_zynq driver. You 243 will need to provide parameters to make this work. The driver will 244 be available until the real driver-model serial is running. 245 246config DEBUG_UART_APBUART 247 depends on LEON3 248 bool "Gaisler APBUART" 249 help 250 Select this to enable a debug UART using the serial_leon3 driver. You 251 will need to provide parameters to make this work. The driver will 252 be available until the real driver model serial is running. 253 254config DEBUG_UART_PL010 255 bool "pl010" 256 help 257 Select this to enable a debug UART using the pl01x driver with the 258 PL010 UART type. You will need to provide parameters to make this 259 work. The driver will be available until the real driver model 260 serial is running. 261 262config DEBUG_UART_PL011 263 bool "pl011" 264 help 265 Select this to enable a debug UART using the pl01x driver with the 266 PL011 UART type. You will need to provide parameters to make this 267 work. The driver will be available until the real driver model 268 serial is running. 269 270config DEBUG_UART_PIC32 271 bool "Microchip PIC32" 272 depends on PIC32_SERIAL 273 help 274 Select this to enable a debug UART using the serial_pic32 driver. You 275 will need to provide parameters to make this work. The driver will 276 be available until the real driver model serial is running. 277 278config DEBUG_UART_MXC 279 bool "IMX Serial port" 280 depends on MXC_UART 281 help 282 Select this to enable a debug UART using the serial_mxc driver. You 283 will need to provide parameters to make this work. The driver will 284 be available until the real driver model serial is running. 285 286config DEBUG_UART_UNIPHIER 287 bool "UniPhier on-chip UART" 288 depends on ARCH_UNIPHIER 289 help 290 Select this to enable a debug UART using the UniPhier on-chip UART. 291 You will need to provide DEBUG_UART_BASE to make this work. The 292 driver will be available until the real driver-model serial is 293 running. 294 295config DEBUG_UART_OMAP 296 bool "OMAP uart" 297 help 298 Select this to enable a debug UART using the omap ns16550 driver. 299 You will need to provide parameters to make this work. The driver 300 will be available until the real driver model serial is running. 301 302endchoice 303 304config DEBUG_UART_BASE 305 hex "Base address of UART" 306 depends on DEBUG_UART 307 help 308 This is the base address of your UART for memory-mapped UARTs. 309 310 A default should be provided by your board, but if not you will need 311 to use the correct value here. 312 313config DEBUG_UART_CLOCK 314 int "UART input clock" 315 depends on DEBUG_UART 316 help 317 The UART input clock determines the speed of the internal UART 318 circuitry. The baud rate is derived from this by dividing the input 319 clock down. 320 321 A default should be provided by your board, but if not you will need 322 to use the correct value here. 323 324config DEBUG_UART_SHIFT 325 int "UART register shift" 326 depends on DEBUG_UART 327 default 0 if DEBUG_UART 328 help 329 Some UARTs (notably ns16550) support different register layouts 330 where the registers are spaced either as bytes, words or some other 331 value. Use this value to specify the shift to use, where 0=byte 332 registers, 2=32-bit word registers, etc. 333 334config DEBUG_UART_BOARD_INIT 335 bool "Enable board-specific debug UART init" 336 depends on DEBUG_UART 337 help 338 Some boards need to set things up before the debug UART can be used. 339 On these boards a call to debug_uart_init() is insufficient. When 340 this option is enabled, the function board_debug_uart_init() will 341 be called when debug_uart_init() is called. You can put any code 342 here that is needed to set up the UART ready for use, such as set 343 pin multiplexing or enable clocks. 344 345config DEBUG_UART_ANNOUNCE 346 bool "Show a message when the debug UART starts up" 347 depends on DEBUG_UART 348 help 349 Enable this option to show a message when the debug UART is ready 350 for use. You will see a message like "<debug_uart> " as soon as 351 U-Boot has the UART ready for use (i.e. your code calls 352 debug_uart_init()). This can be useful just as a check that 353 everything is working. 354 355config DEBUG_UART_SKIP_INIT 356 bool "Skip UART initialization" 357 help 358 Select this if the UART you want to use for debug output is already 359 initialized by the time U-Boot starts its execution. 360 361config ALTERA_JTAG_UART 362 bool "Altera JTAG UART support" 363 depends on DM_SERIAL 364 help 365 Select this to enable an JTAG UART for Altera devices.The JTAG UART 366 core implements a method to communicate serial character streams 367 between a host PC and a Qsys system on an Altera FPGA. Please find 368 details on the "Embedded Peripherals IP User Guide" of Altera. 369 370config ALTERA_JTAG_UART_BYPASS 371 bool "Bypass output when no connection" 372 depends on ALTERA_JTAG_UART 373 help 374 Bypass console output and keep going even if there is no JTAG 375 terminal connection with the host. The console output will resume 376 once the JTAG terminal is connected. Without the bypass, the console 377 output will wait forever until a JTAG terminal is connected. If you 378 not are sure, say Y. 379 380config ALTERA_UART 381 bool "Altera UART support" 382 depends on DM_SERIAL 383 help 384 Select this to enable an UART for Altera devices. Please find 385 details on the "Embedded Peripherals IP User Guide" of Altera. 386 387config AR933X_UART 388 bool "QCA/Atheros ar933x UART support" 389 depends on DM_SERIAL && SOC_AR933X 390 help 391 Select this to enable UART support for QCA/Atheros ar933x 392 devices. This driver uses driver model and requires a device 393 tree binding to operate, please refer to the document at 394 doc/device-tree-bindings/serial/qca,ar9330-uart.txt. 395 396config ATMEL_USART 397 bool "Atmel USART support" 398 help 399 Select this to enable USART support for Atmel SoCs. It can be 400 configured in the device tree, and input clock frequency can 401 be got from the clk node. 402 403config BCM283X_MU_SERIAL 404 bool "Support for BCM283x Mini-UART" 405 depends on DM_SERIAL && ARCH_BCM283X 406 default y 407 help 408 Select this to enable Mini-UART support on BCM283X family of SoCs. 409 410config BCM283X_PL011_SERIAL 411 bool "Support for BCM283x PL011 UART" 412 depends on PL01X_SERIAL && ARCH_BCM283X 413 default y 414 help 415 Select this to enable an overriding PL011 driver for BCM283X SoCs 416 that supports automatic disable, so that it only gets used when 417 the UART is actually muxed. 418 419config BCM6345_SERIAL 420 bool "Support for BCM6345 UART" 421 depends on DM_SERIAL && ARCH_BMIPS 422 help 423 Select this to enable UART on BCM6345 SoCs. 424 425config FSL_LPUART 426 bool "Freescale LPUART support" 427 help 428 Select this to enable a Low Power UART for Freescale VF610 and 429 QorIQ Layerscape devices. 430 431config MVEBU_A3700_UART 432 bool "UART support for Armada 3700" 433 default n 434 help 435 Choose this option to add support for UART driver on the Marvell 436 Armada 3700 SoC. The base address is configured via DT. 437 438config MXC_UART 439 bool "IMX serial port support" 440 depends on MX5 || MX6 441 help 442 If you have a machine based on a Motorola IMX CPU you 443 can enable its onboard serial port by enabling this option. 444 445config NULLDEV_SERIAL 446 bool "Null serial device" 447 help 448 Select this to enable null serial device support. A null serial 449 device merely acts as a placeholder for a serial device and does 450 nothing for all it's operation. 451 452config PIC32_SERIAL 453 bool "Support for Microchip PIC32 on-chip UART" 454 depends on DM_SERIAL && MACH_PIC32 455 default y 456 help 457 Support for the UART found on Microchip PIC32 SoC's. 458 459config SYS_NS16550 460 bool "NS16550 UART or compatible" 461 help 462 Support NS16550 UART or compatible. This can be enabled in the 463 device tree with the correct input clock frequency. If the input 464 clock frequency is not defined in the device tree, the macro 465 CONFIG_SYS_NS16550_CLK defined in a legacy board header file will 466 be used. It can be a constant or a function to get clock, eg, 467 get_serial_clock(). 468 469config INTEL_MID_SERIAL 470 bool "Intel MID platform UART support" 471 depends on DM_SERIAL && OF_CONTROL 472 depends on INTEL_MID 473 select SYS_NS16550 474 help 475 Select this to enable a UART for Intel MID platforms. 476 This uses the ns16550 driver as a library. 477 478config PL010_SERIAL 479 bool "ARM PL010 driver" 480 depends on !DM_SERIAL 481 help 482 Select this to enable a UART for platforms using PL010. 483 484config PL011_SERIAL 485 bool "ARM PL011 driver" 486 depends on !DM_SERIAL 487 help 488 Select this to enable a UART for platforms using PL011. 489 490config PL01X_SERIAL 491 bool "ARM PL010 and PL011 driver" 492 depends on DM_SERIAL 493 help 494 Select this to enable a UART for platforms using PL010 or PL011. 495 496config ROCKCHIP_SERIAL 497 bool "Rockchip on-chip UART support" 498 depends on DM_SERIAL && SPL_OF_PLATDATA 499 help 500 Select this to enable a debug UART for Rockchip devices when using 501 CONFIG_SPL_OF_PLATDATA (i.e. a compiled-in device tree replacemenmt). 502 This uses the ns16550 driver, converting the platdata from of-platdata 503 to the ns16550 format. 504 505config SANDBOX_SERIAL 506 bool "Sandbox UART support" 507 depends on SANDBOX 508 help 509 Select this to enable a seral UART for sandbox. This is required to 510 operate correctly, otherwise you will see no serial output from 511 sandbox. The emulated UART will display to the console and console 512 input will be fed into the UART. This allows you to interact with 513 U-Boot. 514 515 The operation of the console is controlled by the -t command-line 516 flag. In raw mode, U-Boot sees all characters from the terminal 517 before they are processed, including Ctrl-C. In cooked mode, Ctrl-C 518 is processed by the terminal, and terminates U-Boot. Valid options 519 are: 520 521 -t raw-with-sigs Raw mode, Ctrl-C will terminate U-Boot 522 -t raw Raw mode, Ctrl-C is processed by U-Boot 523 -t cooked Cooked mode, Ctrl-C terminates 524 525config SCIF_CONSOLE 526 bool "Renesas SCIF UART support" 527 depends on SH || ARCH_RMOBILE 528 help 529 Select this to enable Renesas SCIF UART. To operate serial ports 530 on systems with RCar or SH SoCs, say Y to this option. If unsure, 531 say N. 532 533config UNIPHIER_SERIAL 534 bool "Support for UniPhier on-chip UART" 535 depends on ARCH_UNIPHIER 536 default y 537 help 538 If you have a UniPhier based board and want to use the on-chip 539 serial ports, say Y to this option. If unsure, say N. 540 541config XILINX_UARTLITE 542 bool "Xilinx Uarlite support" 543 depends on DM_SERIAL && (MICROBLAZE || ARCH_ZYNQ || ARCH_ZYNQMP || 4xx) 544 help 545 If you have a Xilinx based board and want to use the uartlite 546 serial ports, say Y to this option. If unsure, say N. 547 548config MESON_SERIAL 549 bool "Support for Amlogic Meson UART" 550 depends on DM_SERIAL && ARCH_MESON 551 help 552 If you have an Amlogic Meson based board and want to use the on-chip 553 serial ports, say Y to this option. If unsure, say N. 554 555config MSM_SERIAL 556 bool "Qualcomm on-chip UART" 557 depends on DM_SERIAL 558 help 559 Support Data Mover UART used on Qualcomm Snapdragon SoCs. 560 It should support all Qualcomm devices with UARTDM version 1.4, 561 for example APQ8016 and MSM8916. 562 Single baudrate is supported in current implementation (115200). 563 564config PXA_SERIAL 565 bool "PXA serial port support" 566 help 567 If you have a machine based on a Marvell XScale PXA2xx CPU you 568 can enable its onboard serial ports by enabling this option. 569 570config STI_ASC_SERIAL 571 bool "STMicroelectronics on-chip UART" 572 depends on DM_SERIAL && ARCH_STI 573 help 574 Select this to enable Asynchronous Serial Controller available 575 on STiH410 SoC. This is a basic implementation, it supports 576 following baudrate 9600, 19200, 38400, 57600 and 115200. 577 578config STM32_SERIAL 579 bool "STMicroelectronics STM32 SoCs on-chip UART" 580 depends on DM_SERIAL && (STM32F4 || STM32F7 || STM32H7) 581 help 582 If you have a machine based on a STM32 F4, F7 or H7 SoC you can 583 enable its onboard serial ports, say Y to this option. 584 If unsure, say N. 585 586config ZYNQ_SERIAL 587 bool "Cadence (Xilinx Zynq) UART support" 588 depends on DM_SERIAL && (MICROBLAZE || ARCH_ZYNQ || ARCH_ZYNQMP) 589 help 590 This driver supports the Cadence UART. It is found e.g. in Xilinx 591 Zynq/ZynqMP. 592 593config MPC8XX_CONS 594 bool "Console driver for MPC8XX" 595 depends on 8xx 596 default y 597 598choice 599 prompt "Console port" 600 default 8xx_CONS_SMC1 601 depends on MPC8XX_CONS 602 help 603 Depending on board, select one serial port 604 (CONFIG_8xx_CONS_SMC1 or CONFIG_8xx_CONS_SMC2) 605 606config 8xx_CONS_SMC1 607 bool "SMC1" 608 609config 8xx_CONS_SMC2 610 bool "SMC2" 611 612endchoice 613 614config SYS_SMC_RXBUFLEN 615 int "Console Rx buffer length" 616 depends on MPC8XX_CONS 617 default 1 618 help 619 With CONFIG_SYS_SMC_RXBUFLEN it is possible to define 620 the maximum receive buffer length for the SMC. 621 This option is actual only for 8xx possible. 622 If using CONFIG_SYS_SMC_RXBUFLEN also CONFIG_SYS_MAXIDLE 623 must be defined, to setup the maximum idle timeout for 624 the SMC. 625 626config SYS_MAXIDLE 627 int "maximum idle timeout" 628 depends on MPC8XX_CONS 629 default 0 630 631config SYS_BRGCLK_PRESCALE 632 int "BRG Clock Prescale" 633 depends on MPC8XX_CONS 634 default 1 635 636config SYS_SDSR 637 hex "SDSR Value" 638 depends on MPC8XX_CONS 639 default 0x83 640 641config SYS_SDMR 642 hex "SDMR Value" 643 depends on MPC8XX_CONS 644 default 0 645 646endmenu 647