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 BCM283X_MU_SERIAL 392 bool "Support for BCM283x Mini-UART" 393 depends on DM_SERIAL && ARCH_BCM283X 394 default y 395 help 396 Select this to enable Mini-UART support on BCM283X family of SoCs. 397 398config BCM283X_PL011_SERIAL 399 bool "Support for BCM283x PL011 UART" 400 depends on PL01X_SERIAL && ARCH_BCM283X 401 default y 402 help 403 Select this to enable an overriding PL011 driver for BCM283X SoCs 404 that supports automatic disable, so that it only gets used when 405 the UART is actually muxed. 406 407config BCM6345_SERIAL 408 bool "Support for BCM6345 UART" 409 depends on DM_SERIAL && ARCH_BMIPS 410 help 411 Select this to enable UART on BCM6345 SoCs. 412 413config FSL_LPUART 414 bool "Freescale LPUART support" 415 help 416 Select this to enable a Low Power UART for Freescale VF610 and 417 QorIQ Layerscape devices. 418 419config MVEBU_A3700_UART 420 bool "UART support for Armada 3700" 421 default n 422 help 423 Choose this option to add support for UART driver on the Marvell 424 Armada 3700 SoC. The base address is configured via DT. 425 426config MXC_UART 427 bool "IMX serial port support" 428 depends on MX5 || MX6 429 help 430 If you have a machine based on a Motorola IMX CPU you 431 can enable its onboard serial port by enabling this option. 432 433config NULLDEV_SERIAL 434 bool "Null serial device" 435 help 436 Select this to enable null serial device support. A null serial 437 device merely acts as a placeholder for a serial device and does 438 nothing for all it's operation. 439 440config PIC32_SERIAL 441 bool "Support for Microchip PIC32 on-chip UART" 442 depends on DM_SERIAL && MACH_PIC32 443 default y 444 help 445 Support for the UART found on Microchip PIC32 SoC's. 446 447config SYS_NS16550 448 bool "NS16550 UART or compatible" 449 help 450 Support NS16550 UART or compatible. This can be enabled in the 451 device tree with the correct input clock frequency. If the input 452 clock frequency is not defined in the device tree, the macro 453 CONFIG_SYS_NS16550_CLK defined in a legacy board header file will 454 be used. It can be a constant or a function to get clock, eg, 455 get_serial_clock(). 456 457config INTEL_MID_SERIAL 458 bool "Intel MID platform UART support" 459 depends on DM_SERIAL && OF_CONTROL 460 depends on INTEL_MID 461 select SYS_NS16550 462 help 463 Select this to enable a UART for Intel MID platforms. 464 This uses the ns16550 driver as a library. 465 466config PL010_SERIAL 467 bool "ARM PL010 driver" 468 depends on !DM_SERIAL 469 help 470 Select this to enable a UART for platforms using PL010. 471 472config PL011_SERIAL 473 bool "ARM PL011 driver" 474 depends on !DM_SERIAL 475 help 476 Select this to enable a UART for platforms using PL011. 477 478config PL01X_SERIAL 479 bool "ARM PL010 and PL011 driver" 480 depends on DM_SERIAL 481 help 482 Select this to enable a UART for platforms using PL010 or PL011. 483 484config ROCKCHIP_SERIAL 485 bool "Rockchip on-chip UART support" 486 depends on DM_SERIAL && SPL_OF_PLATDATA 487 help 488 Select this to enable a debug UART for Rockchip devices when using 489 CONFIG_SPL_OF_PLATDATA (i.e. a compiled-in device tree replacemenmt). 490 This uses the ns16550 driver, converting the platdata from of-platdata 491 to the ns16550 format. 492 493config SANDBOX_SERIAL 494 bool "Sandbox UART support" 495 depends on SANDBOX 496 help 497 Select this to enable a seral UART for sandbox. This is required to 498 operate correctly, otherwise you will see no serial output from 499 sandbox. The emulated UART will display to the console and console 500 input will be fed into the UART. This allows you to interact with 501 U-Boot. 502 503 The operation of the console is controlled by the -t command-line 504 flag. In raw mode, U-Boot sees all characters from the terminal 505 before they are processed, including Ctrl-C. In cooked mode, Ctrl-C 506 is processed by the terminal, and terminates U-Boot. Valid options 507 are: 508 509 -t raw-with-sigs Raw mode, Ctrl-C will terminate U-Boot 510 -t raw Raw mode, Ctrl-C is processed by U-Boot 511 -t cooked Cooked mode, Ctrl-C terminates 512 513config SCIF_CONSOLE 514 bool "Renesas SCIF UART support" 515 depends on SH || ARCH_RMOBILE 516 help 517 Select this to enable Renesas SCIF UART. To operate serial ports 518 on systems with RCar or SH SoCs, say Y to this option. If unsure, 519 say N. 520 521config UNIPHIER_SERIAL 522 bool "Support for UniPhier on-chip UART" 523 depends on ARCH_UNIPHIER 524 default y 525 help 526 If you have a UniPhier based board and want to use the on-chip 527 serial ports, say Y to this option. If unsure, say N. 528 529config XILINX_UARTLITE 530 bool "Xilinx Uarlite support" 531 depends on DM_SERIAL && (MICROBLAZE || ARCH_ZYNQ || ARCH_ZYNQMP || 4xx) 532 help 533 If you have a Xilinx based board and want to use the uartlite 534 serial ports, say Y to this option. If unsure, say N. 535 536config MESON_SERIAL 537 bool "Support for Amlogic Meson UART" 538 depends on DM_SERIAL && ARCH_MESON 539 help 540 If you have an Amlogic Meson based board and want to use the on-chip 541 serial ports, say Y to this option. If unsure, say N. 542 543config MSM_SERIAL 544 bool "Qualcomm on-chip UART" 545 depends on DM_SERIAL 546 help 547 Support Data Mover UART used on Qualcomm Snapdragon SoCs. 548 It should support all Qualcomm devices with UARTDM version 1.4, 549 for example APQ8016 and MSM8916. 550 Single baudrate is supported in current implementation (115200). 551 552config PXA_SERIAL 553 bool "PXA serial port support" 554 help 555 If you have a machine based on a Marvell XScale PXA2xx CPU you 556 can enable its onboard serial ports by enabling this option. 557 558config STI_ASC_SERIAL 559 bool "STMicroelectronics on-chip UART" 560 depends on DM_SERIAL && ARCH_STI 561 help 562 Select this to enable Asynchronous Serial Controller available 563 on STiH410 SoC. This is a basic implementation, it supports 564 following baudrate 9600, 19200, 38400, 57600 and 115200. 565 566config STM32_SERIAL 567 bool "STMicroelectronics STM32 SoCs on-chip UART" 568 depends on DM_SERIAL && (STM32F4 || STM32F7 || STM32H7) 569 help 570 If you have a machine based on a STM32 F4, F7 or H7 SoC you can 571 enable its onboard serial ports, say Y to this option. 572 If unsure, say N. 573 574config ZYNQ_SERIAL 575 bool "Cadence (Xilinx Zynq) UART support" 576 depends on DM_SERIAL && (MICROBLAZE || ARCH_ZYNQ || ARCH_ZYNQMP) 577 help 578 This driver supports the Cadence UART. It is found e.g. in Xilinx 579 Zynq/ZynqMP. 580 581config MPC8XX_CONS 582 bool "Console driver for MPC8XX" 583 depends on 8xx 584 default y 585 586choice 587 prompt "Console port" 588 default 8xx_CONS_SMC1 589 depends on MPC8XX_CONS 590 help 591 Depending on board, select one serial port 592 (CONFIG_8xx_CONS_SMC1 or CONFIG_8xx_CONS_SMC2) 593 594config 8xx_CONS_SMC1 595 bool "SMC1" 596 597config 8xx_CONS_SMC2 598 bool "SMC2" 599 600endchoice 601 602config SYS_SMC_RXBUFLEN 603 int "Console Rx buffer length" 604 depends on MPC8XX_CONS 605 default 1 606 help 607 With CONFIG_SYS_SMC_RXBUFLEN it is possible to define 608 the maximum receive buffer length for the SMC. 609 This option is actual only for 8xx possible. 610 If using CONFIG_SYS_SMC_RXBUFLEN also CONFIG_SYS_MAXIDLE 611 must be defined, to setup the maximum idle timeout for 612 the SMC. 613 614config SYS_MAXIDLE 615 int "maximum idle timeout" 616 depends on MPC8XX_CONS 617 default 0 618 619config SYS_BRGCLK_PRESCALE 620 int "BRG Clock Prescale" 621 depends on MPC8XX_CONS 622 default 1 623 624config SYS_SDSR 625 hex "SDSR Value" 626 depends on MPC8XX_CONS 627 default 0x83 628 629config SYS_SDMR 630 hex "SDMR Value" 631 depends on MPC8XX_CONS 632 default 0 633 634endmenu 635