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 SPECIFY_CONSOLE_INDEX 28 bool "Specify the port number used for console" 29 default y if !DM_SERIAL || (SPL && !SPL_DM_SERIAL) || \ 30 (TPL && !TPL_DM_SERIAL) 31 help 32 In various cases, we need to specify which of the UART devices that 33 a board or SoC has available are to be used for the console device 34 in U-Boot. 35 36config SERIAL_PRESENT 37 bool "Provide a serial driver" 38 depends on DM_SERIAL 39 default y 40 help 41 In very space-constrained devices even the full UART driver is too 42 large. In this case the debug UART can still be used in some cases. 43 This option enables the full UART in U-Boot, so if is it disabled, 44 the full UART driver will be omitted, thus saving space. 45 46config SPL_SERIAL_PRESENT 47 bool "Provide a serial driver in SPL" 48 depends on DM_SERIAL 49 default y 50 help 51 In very space-constrained devices even the full UART driver is too 52 large. In this case the debug UART can still be used in some cases. 53 This option enables the full UART in SPL, so if is it disabled, 54 the full UART driver will be omitted, thus saving space. 55 56# Logic to allow us to use the imply keyword to set what the default port 57# should be. The default is otherwise 1. 58config CONS_INDEX_0 59 bool 60 61config CONS_INDEX_2 62 bool 63 64config CONS_INDEX_3 65 bool 66 67config CONS_INDEX_4 68 bool 69 70config CONS_INDEX_5 71 bool 72 73config CONS_INDEX_6 74 bool 75 76config CONS_INDEX 77 int "UART used for console" 78 depends on SPECIFY_CONSOLE_INDEX 79 range 0 6 80 default 0 if CONS_INDEX_0 81 default 2 if CONS_INDEX_2 82 default 3 if CONS_INDEX_3 83 default 4 if CONS_INDEX_4 84 default 5 if CONS_INDEX_5 85 default 6 if CONS_INDEX_6 86 default 1 87 help 88 Set this to match the UART number of the serial console. 89 90config DM_SERIAL 91 bool "Enable Driver Model for serial drivers" 92 depends on DM 93 help 94 Enable driver model for serial. This replaces 95 drivers/serial/serial.c with the serial uclass, which 96 implements serial_putc() etc. The uclass interface is 97 defined in include/serial.h. 98 99config SERIAL_RX_BUFFER 100 bool "Enable RX buffer for serial input" 101 depends on DM_SERIAL 102 help 103 Enable RX buffer support for the serial driver. This enables 104 pasting longer strings, even when the RX FIFO of the UART is 105 not big enough (e.g. 16 bytes on the normal NS16550). 106 107config SERIAL_RX_BUFFER_SIZE 108 int "RX buffer size" 109 depends on SERIAL_RX_BUFFER 110 default 256 111 help 112 The size of the RX buffer (needs to be power of 2) 113 114config SERIAL_SEARCH_ALL 115 bool "Search for serial devices after default one failed" 116 depends on DM_SERIAL 117 help 118 The serial subsystem only searches for a single serial device 119 that was instantiated, but does not check whether it was probed 120 correctly. With this option set, we make successful probing 121 mandatory and search for fallback serial devices if the default 122 device does not work. 123 124 If unsure, say N. 125 126config SPL_DM_SERIAL 127 bool "Enable Driver Model for serial drivers in SPL" 128 depends on DM_SERIAL && SPL_DM 129 default y 130 help 131 Enable driver model for serial in SPL. This replaces 132 drivers/serial/serial.c with the serial uclass, which 133 implements serial_putc() etc. The uclass interface is 134 defined in include/serial.h. 135 136config TPL_DM_SERIAL 137 bool "Enable Driver Model for serial drivers in TPL" 138 depends on DM_SERIAL 139 default y if TPL && DM_SERIAL 140 help 141 Enable driver model for serial in TPL. This replaces 142 drivers/serial/serial.c with the serial uclass, which 143 implements serial_putc() etc. The uclass interface is 144 defined in include/serial.h. 145 146config DEBUG_UART 147 bool "Enable an early debug UART for debugging" 148 help 149 The debug UART is intended for use very early in U-Boot to debug 150 problems when an ICE or other debug mechanism is not available. 151 152 To use it you should: 153 - Make sure your UART supports this interface 154 - Enable CONFIG_DEBUG_UART 155 - Enable the CONFIG for your UART to tell it to provide this interface 156 (e.g. CONFIG_DEBUG_UART_NS16550) 157 - Define the required settings as needed (see below) 158 - Call debug_uart_init() before use 159 - Call debug_uart_putc() to output a character 160 161 Depending on your platform it may be possible to use this UART before 162 a stack is available. 163 164 If your UART does not support this interface you can probably add 165 support quite easily. Remember that you cannot use driver model and 166 it is preferred to use no stack. 167 168 You must not use this UART once driver model is working and the 169 serial drivers are up and running (done in serial_init()). Otherwise 170 the drivers may conflict and you will get strange output. 171 172choice 173 prompt "Select which UART will provide the debug UART" 174 depends on DEBUG_UART 175 default DEBUG_UART_NS16550 176 177config DEBUG_UART_ALTERA_JTAGUART 178 bool "Altera JTAG UART" 179 help 180 Select this to enable a debug UART using the altera_jtag_uart driver. 181 You will need to provide parameters to make this work. The driver will 182 be available until the real driver model serial is running. 183 184config DEBUG_UART_ALTERA_UART 185 bool "Altera UART" 186 help 187 Select this to enable a debug UART using the altera_uart driver. 188 You will need to provide parameters to make this work. The driver will 189 be available until the real driver model serial is running. 190 191config DEBUG_UART_AR933X 192 bool "QCA/Atheros ar933x" 193 depends on AR933X_UART 194 help 195 Select this to enable a debug UART using the ar933x uart driver. 196 You will need to provide parameters to make this work. The 197 driver will be available until the real driver model serial is 198 running. 199 200config DEBUG_UART_ATMEL 201 bool "Atmel USART" 202 help 203 Select this to enable a debug UART using the atmel usart driver. You 204 will need to provide parameters to make this work. The driver will 205 be available until the real driver-model serial is running. 206 207config DEBUG_UART_BCM6345 208 bool "BCM6345 UART" 209 depends on BCM6345_SERIAL 210 help 211 Select this to enable a debug UART on BCM6345 SoCs. You 212 will need to provide parameters to make this work. The driver will 213 be available until the real driver model serial is running. 214 215config DEBUG_UART_NS16550 216 bool "ns16550" 217 help 218 Select this to enable a debug UART using the ns16550 driver. You 219 will need to provide parameters to make this work. The driver will 220 be available until the real driver model serial is running. 221 222config DEBUG_EFI_CONSOLE 223 bool "EFI" 224 depends on EFI_APP 225 help 226 Select this to enable a debug console which calls back to EFI to 227 output to the console. This can be useful for early debugging of 228 U-Boot when running on top of EFI (Extensive Firmware Interface). 229 This is a type of BIOS used by PCs. 230 231config DEBUG_UART_S5P 232 bool "Samsung S5P" 233 help 234 Select this to enable a debug UART using the serial_s5p driver. You 235 will need to provide parameters to make this work. The driver will 236 be available until the real driver-model serial is running. 237 238config DEBUG_UART_MESON 239 bool "Amlogic Meson" 240 depends on MESON_SERIAL 241 help 242 Select this to enable a debug UART using the serial_meson 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_UARTLITE 247 bool "Xilinx Uartlite" 248 help 249 Select this to enable a debug UART using the serial_uartlite driver. 250 You will need to provide parameters to make this work. The driver will 251 be available until the real driver-model serial is running. 252 253config DEBUG_UART_ARM_DCC 254 bool "ARM DCC" 255 help 256 Select this to enable a debug UART using the ARM JTAG DCC port. 257 The DCC port can be used for very early debugging and doesn't require 258 any additional setting like address/baudrate/clock. On systems without 259 any serial interface this is the easiest way how to get console. 260 Every ARM core has own DCC port which is the part of debug interface. 261 This port is available at least on ARMv6, ARMv7, ARMv8 and XScale 262 architectures. 263 264config DEBUG_MVEBU_A3700_UART 265 bool "Marvell Armada 3700" 266 help 267 Select this to enable a debug UART using the serial_mvebu driver. You 268 will need to provide parameters to make this work. The driver will 269 be available until the real driver-model serial is running. 270 271config DEBUG_UART_ZYNQ 272 bool "Xilinx Zynq" 273 help 274 Select this to enable a debug UART using the serial_zynq 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_APBUART 279 depends on LEON3 280 bool "Gaisler APBUART" 281 help 282 Select this to enable a debug UART using the serial_leon3 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_PL010 287 bool "pl010" 288 help 289 Select this to enable a debug UART using the pl01x driver with the 290 PL010 UART type. You will need to provide parameters to make this 291 work. The driver will be available until the real driver model 292 serial is running. 293 294config DEBUG_UART_PL011 295 bool "pl011" 296 help 297 Select this to enable a debug UART using the pl01x driver with the 298 PL011 UART type. You will need to provide parameters to make this 299 work. The driver will be available until the real driver model 300 serial is running. 301 302config DEBUG_UART_PIC32 303 bool "Microchip PIC32" 304 depends on PIC32_SERIAL 305 help 306 Select this to enable a debug UART using the serial_pic32 driver. You 307 will need to provide parameters to make this work. The driver will 308 be available until the real driver model serial is running. 309 310config DEBUG_UART_MXC 311 bool "IMX Serial port" 312 depends on MXC_UART 313 help 314 Select this to enable a debug UART using the serial_mxc driver. You 315 will need to provide parameters to make this work. The driver will 316 be available until the real driver model serial is running. 317 318config DEBUG_UART_UNIPHIER 319 bool "UniPhier on-chip UART" 320 depends on ARCH_UNIPHIER 321 help 322 Select this to enable a debug UART using the UniPhier on-chip UART. 323 You will need to provide DEBUG_UART_BASE to make this work. The 324 driver will be available until the real driver-model serial is 325 running. 326 327config DEBUG_UART_OMAP 328 bool "OMAP uart" 329 help 330 Select this to enable a debug UART using the omap ns16550 driver. 331 You will need to provide parameters to make this work. The driver 332 will be available until the real driver model serial is running. 333 334endchoice 335 336config DEBUG_UART_BASE 337 hex "Base address of UART" 338 depends on DEBUG_UART 339 help 340 This is the base address of your UART for memory-mapped UARTs. 341 342 A default should be provided by your board, but if not you will need 343 to use the correct value here. 344 345config DEBUG_UART_CLOCK 346 int "UART input clock" 347 depends on DEBUG_UART 348 help 349 The UART input clock determines the speed of the internal UART 350 circuitry. The baud rate is derived from this by dividing the input 351 clock down. 352 353 A default should be provided by your board, but if not you will need 354 to use the correct value here. 355 356config DEBUG_UART_SHIFT 357 int "UART register shift" 358 depends on DEBUG_UART 359 default 0 if DEBUG_UART 360 help 361 Some UARTs (notably ns16550) support different register layouts 362 where the registers are spaced either as bytes, words or some other 363 value. Use this value to specify the shift to use, where 0=byte 364 registers, 2=32-bit word registers, etc. 365 366config DEBUG_UART_BOARD_INIT 367 bool "Enable board-specific debug UART init" 368 depends on DEBUG_UART 369 help 370 Some boards need to set things up before the debug UART can be used. 371 On these boards a call to debug_uart_init() is insufficient. When 372 this option is enabled, the function board_debug_uart_init() will 373 be called when debug_uart_init() is called. You can put any code 374 here that is needed to set up the UART ready for use, such as set 375 pin multiplexing or enable clocks. 376 377config DEBUG_UART_ANNOUNCE 378 bool "Show a message when the debug UART starts up" 379 depends on DEBUG_UART 380 help 381 Enable this option to show a message when the debug UART is ready 382 for use. You will see a message like "<debug_uart> " as soon as 383 U-Boot has the UART ready for use (i.e. your code calls 384 debug_uart_init()). This can be useful just as a check that 385 everything is working. 386 387config DEBUG_UART_SKIP_INIT 388 bool "Skip UART initialization" 389 help 390 Select this if the UART you want to use for debug output is already 391 initialized by the time U-Boot starts its execution. 392 393config ALTERA_JTAG_UART 394 bool "Altera JTAG UART support" 395 depends on DM_SERIAL 396 help 397 Select this to enable an JTAG UART for Altera devices.The JTAG UART 398 core implements a method to communicate serial character streams 399 between a host PC and a Qsys system on an Altera FPGA. Please find 400 details on the "Embedded Peripherals IP User Guide" of Altera. 401 402config ALTERA_JTAG_UART_BYPASS 403 bool "Bypass output when no connection" 404 depends on ALTERA_JTAG_UART 405 help 406 Bypass console output and keep going even if there is no JTAG 407 terminal connection with the host. The console output will resume 408 once the JTAG terminal is connected. Without the bypass, the console 409 output will wait forever until a JTAG terminal is connected. If you 410 not are sure, say Y. 411 412config ALTERA_UART 413 bool "Altera UART support" 414 depends on DM_SERIAL 415 help 416 Select this to enable an UART for Altera devices. Please find 417 details on the "Embedded Peripherals IP User Guide" of Altera. 418 419config AR933X_UART 420 bool "QCA/Atheros ar933x UART support" 421 depends on DM_SERIAL && SOC_AR933X 422 help 423 Select this to enable UART support for QCA/Atheros ar933x 424 devices. This driver uses driver model and requires a device 425 tree binding to operate, please refer to the document at 426 doc/device-tree-bindings/serial/qca,ar9330-uart.txt. 427 428config ATMEL_USART 429 bool "Atmel USART support" 430 help 431 Select this to enable USART support for Atmel SoCs. It can be 432 configured in the device tree, and input clock frequency can 433 be got from the clk node. 434 435config BCM283X_MU_SERIAL 436 bool "Support for BCM283x Mini-UART" 437 depends on DM_SERIAL && ARCH_BCM283X 438 default y 439 help 440 Select this to enable Mini-UART support on BCM283X family of SoCs. 441 442config BCM283X_PL011_SERIAL 443 bool "Support for BCM283x PL011 UART" 444 depends on PL01X_SERIAL && ARCH_BCM283X 445 default y 446 help 447 Select this to enable an overriding PL011 driver for BCM283X SoCs 448 that supports automatic disable, so that it only gets used when 449 the UART is actually muxed. 450 451config BCM6345_SERIAL 452 bool "Support for BCM6345 UART" 453 depends on DM_SERIAL && ARCH_BMIPS 454 help 455 Select this to enable UART on BCM6345 SoCs. 456 457config FSL_LPUART 458 bool "Freescale LPUART support" 459 help 460 Select this to enable a Low Power UART for Freescale VF610 and 461 QorIQ Layerscape devices. 462 463config MVEBU_A3700_UART 464 bool "UART support for Armada 3700" 465 default n 466 help 467 Choose this option to add support for UART driver on the Marvell 468 Armada 3700 SoC. The base address is configured via DT. 469 470config MXC_UART 471 bool "IMX serial port support" 472 depends on MX5 || MX6 473 help 474 If you have a machine based on a Motorola IMX CPU you 475 can enable its onboard serial port by enabling this option. 476 477config NULLDEV_SERIAL 478 bool "Null serial device" 479 help 480 Select this to enable null serial device support. A null serial 481 device merely acts as a placeholder for a serial device and does 482 nothing for all it's operation. 483 484config PIC32_SERIAL 485 bool "Support for Microchip PIC32 on-chip UART" 486 depends on DM_SERIAL && MACH_PIC32 487 default y 488 help 489 Support for the UART found on Microchip PIC32 SoC's. 490 491config SYS_NS16550 492 bool "NS16550 UART or compatible" 493 help 494 Support NS16550 UART or compatible. This can be enabled in the 495 device tree with the correct input clock frequency. If the input 496 clock frequency is not defined in the device tree, the macro 497 CONFIG_SYS_NS16550_CLK defined in a legacy board header file will 498 be used. It can be a constant or a function to get clock, eg, 499 get_serial_clock(). 500 501config INTEL_MID_SERIAL 502 bool "Intel MID platform UART support" 503 depends on DM_SERIAL && OF_CONTROL 504 depends on INTEL_MID 505 select SYS_NS16550 506 help 507 Select this to enable a UART for Intel MID platforms. 508 This uses the ns16550 driver as a library. 509 510config PL010_SERIAL 511 bool "ARM PL010 driver" 512 depends on !DM_SERIAL 513 help 514 Select this to enable a UART for platforms using PL010. 515 516config PL011_SERIAL 517 bool "ARM PL011 driver" 518 depends on !DM_SERIAL 519 help 520 Select this to enable a UART for platforms using PL011. 521 522config PL01X_SERIAL 523 bool "ARM PL010 and PL011 driver" 524 depends on DM_SERIAL 525 help 526 Select this to enable a UART for platforms using PL010 or PL011. 527 528config ROCKCHIP_SERIAL 529 bool "Rockchip on-chip UART support" 530 depends on DM_SERIAL && SPL_OF_PLATDATA 531 help 532 Select this to enable a debug UART for Rockchip devices when using 533 CONFIG_SPL_OF_PLATDATA (i.e. a compiled-in device tree replacemenmt). 534 This uses the ns16550 driver, converting the platdata from of-platdata 535 to the ns16550 format. 536 537config SANDBOX_SERIAL 538 bool "Sandbox UART support" 539 depends on SANDBOX 540 help 541 Select this to enable a seral UART for sandbox. This is required to 542 operate correctly, otherwise you will see no serial output from 543 sandbox. The emulated UART will display to the console and console 544 input will be fed into the UART. This allows you to interact with 545 U-Boot. 546 547 The operation of the console is controlled by the -t command-line 548 flag. In raw mode, U-Boot sees all characters from the terminal 549 before they are processed, including Ctrl-C. In cooked mode, Ctrl-C 550 is processed by the terminal, and terminates U-Boot. Valid options 551 are: 552 553 -t raw-with-sigs Raw mode, Ctrl-C will terminate U-Boot 554 -t raw Raw mode, Ctrl-C is processed by U-Boot 555 -t cooked Cooked mode, Ctrl-C terminates 556 557config SCIF_CONSOLE 558 bool "Renesas SCIF UART support" 559 depends on SH || ARCH_RMOBILE 560 help 561 Select this to enable Renesas SCIF UART. To operate serial ports 562 on systems with RCar or SH SoCs, say Y to this option. If unsure, 563 say N. 564 565config UNIPHIER_SERIAL 566 bool "Support for UniPhier on-chip UART" 567 depends on ARCH_UNIPHIER 568 default y 569 help 570 If you have a UniPhier based board and want to use the on-chip 571 serial ports, say Y to this option. If unsure, say N. 572 573config XILINX_UARTLITE 574 bool "Xilinx Uarlite support" 575 depends on DM_SERIAL && (MICROBLAZE || ARCH_ZYNQ || ARCH_ZYNQMP || 4xx) 576 help 577 If you have a Xilinx based board and want to use the uartlite 578 serial ports, say Y to this option. If unsure, say N. 579 580config MESON_SERIAL 581 bool "Support for Amlogic Meson UART" 582 depends on DM_SERIAL && ARCH_MESON 583 help 584 If you have an Amlogic Meson based board and want to use the on-chip 585 serial ports, say Y to this option. If unsure, say N. 586 587config MSM_SERIAL 588 bool "Qualcomm on-chip UART" 589 depends on DM_SERIAL 590 help 591 Support Data Mover UART used on Qualcomm Snapdragon SoCs. 592 It should support all Qualcomm devices with UARTDM version 1.4, 593 for example APQ8016 and MSM8916. 594 Single baudrate is supported in current implementation (115200). 595 596config PXA_SERIAL 597 bool "PXA serial port support" 598 help 599 If you have a machine based on a Marvell XScale PXA2xx CPU you 600 can enable its onboard serial ports by enabling this option. 601 602config STI_ASC_SERIAL 603 bool "STMicroelectronics on-chip UART" 604 depends on DM_SERIAL && ARCH_STI 605 help 606 Select this to enable Asynchronous Serial Controller available 607 on STiH410 SoC. This is a basic implementation, it supports 608 following baudrate 9600, 19200, 38400, 57600 and 115200. 609 610config STM32_SERIAL 611 bool "STMicroelectronics STM32 SoCs on-chip UART" 612 depends on DM_SERIAL && (STM32F4 || STM32F7 || STM32H7 || ARCH_STM32MP) 613 help 614 If you have a machine based on a STM32 F4, F7, H7 or MP1 SOC 615 you can enable its onboard serial ports, say Y to this option. 616 If unsure, say N. 617 618config ZYNQ_SERIAL 619 bool "Cadence (Xilinx Zynq) UART support" 620 depends on DM_SERIAL && (MICROBLAZE || ARCH_ZYNQ || ARCH_ZYNQMP) 621 help 622 This driver supports the Cadence UART. It is found e.g. in Xilinx 623 Zynq/ZynqMP. 624 625config MPC8XX_CONS 626 bool "Console driver for MPC8XX" 627 depends on 8xx 628 default y 629 630choice 631 prompt "Console port" 632 default 8xx_CONS_SMC1 633 depends on MPC8XX_CONS 634 help 635 Depending on board, select one serial port 636 (CONFIG_8xx_CONS_SMC1 or CONFIG_8xx_CONS_SMC2) 637 638config 8xx_CONS_SMC1 639 bool "SMC1" 640 641config 8xx_CONS_SMC2 642 bool "SMC2" 643 644endchoice 645 646config SYS_SMC_RXBUFLEN 647 int "Console Rx buffer length" 648 depends on MPC8XX_CONS 649 default 1 650 help 651 With CONFIG_SYS_SMC_RXBUFLEN it is possible to define 652 the maximum receive buffer length for the SMC. 653 This option is actual only for 8xx possible. 654 If using CONFIG_SYS_SMC_RXBUFLEN also CONFIG_SYS_MAXIDLE 655 must be defined, to setup the maximum idle timeout for 656 the SMC. 657 658config SYS_MAXIDLE 659 int "maximum idle timeout" 660 depends on MPC8XX_CONS 661 default 0 662 663config SYS_BRGCLK_PRESCALE 664 int "BRG Clock Prescale" 665 depends on MPC8XX_CONS 666 default 1 667 668config SYS_SDSR 669 hex "SDSR Value" 670 depends on MPC8XX_CONS 671 default 0x83 672 673config SYS_SDMR 674 hex "SDMR Value" 675 depends on MPC8XX_CONS 676 default 0 677 678endmenu 679