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 56config TPL_SERIAL_PRESENT 57 bool "Provide a serial driver in TPL" 58 depends on DM_SERIAL 59 default y 60 help 61 In very space-constrained devices even the full UART driver is too 62 large. In this case the debug UART can still be used in some cases. 63 This option enables the full UART in TPL, so if is it disabled, 64 the full UART driver will be omitted, thus saving space. 65 66# Logic to allow us to use the imply keyword to set what the default port 67# should be. The default is otherwise 1. 68config CONS_INDEX_0 69 bool 70 71config CONS_INDEX_2 72 bool 73 74config CONS_INDEX_3 75 bool 76 77config CONS_INDEX_4 78 bool 79 80config CONS_INDEX_5 81 bool 82 83config CONS_INDEX_6 84 bool 85 86config CONS_INDEX 87 int "UART used for console" 88 depends on SPECIFY_CONSOLE_INDEX 89 range 0 6 90 default 0 if CONS_INDEX_0 91 default 2 if CONS_INDEX_2 92 default 3 if CONS_INDEX_3 93 default 4 if CONS_INDEX_4 94 default 5 if CONS_INDEX_5 95 default 6 if CONS_INDEX_6 96 default 1 97 help 98 Set this to match the UART number of the serial console. 99 100config DM_SERIAL 101 bool "Enable Driver Model for serial drivers" 102 depends on DM 103 help 104 Enable driver model for serial. This replaces 105 drivers/serial/serial.c with the serial uclass, which 106 implements serial_putc() etc. The uclass interface is 107 defined in include/serial.h. 108 109config SERIAL_RX_BUFFER 110 bool "Enable RX buffer for serial input" 111 depends on DM_SERIAL 112 help 113 Enable RX buffer support for the serial driver. This enables 114 pasting longer strings, even when the RX FIFO of the UART is 115 not big enough (e.g. 16 bytes on the normal NS16550). 116 117config SERIAL_RX_BUFFER_SIZE 118 int "RX buffer size" 119 depends on SERIAL_RX_BUFFER 120 default 256 121 help 122 The size of the RX buffer (needs to be power of 2) 123 124config SERIAL_SEARCH_ALL 125 bool "Search for serial devices after default one failed" 126 depends on DM_SERIAL 127 help 128 The serial subsystem only searches for a single serial device 129 that was instantiated, but does not check whether it was probed 130 correctly. With this option set, we make successful probing 131 mandatory and search for fallback serial devices if the default 132 device does not work. 133 134 If unsure, say N. 135 136config SPL_DM_SERIAL 137 bool "Enable Driver Model for serial drivers in SPL" 138 depends on DM_SERIAL && SPL_DM 139 default y 140 help 141 Enable driver model for serial in SPL. 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 TPL_DM_SERIAL 147 bool "Enable Driver Model for serial drivers in TPL" 148 depends on DM_SERIAL 149 default y if TPL && DM_SERIAL 150 help 151 Enable driver model for serial in TPL. This replaces 152 drivers/serial/serial.c with the serial uclass, which 153 implements serial_putc() etc. The uclass interface is 154 defined in include/serial.h. 155 156config DEBUG_UART 157 bool "Enable an early debug UART for debugging" 158 help 159 The debug UART is intended for use very early in U-Boot to debug 160 problems when an ICE or other debug mechanism is not available. 161 162 To use it you should: 163 - Make sure your UART supports this interface 164 - Enable CONFIG_DEBUG_UART 165 - Enable the CONFIG for your UART to tell it to provide this interface 166 (e.g. CONFIG_DEBUG_UART_NS16550) 167 - Define the required settings as needed (see below) 168 - Call debug_uart_init() before use 169 - Call debug_uart_putc() to output a character 170 171 Depending on your platform it may be possible to use this UART before 172 a stack is available. 173 174 If your UART does not support this interface you can probably add 175 support quite easily. Remember that you cannot use driver model and 176 it is preferred to use no stack. 177 178 You must not use this UART once driver model is working and the 179 serial drivers are up and running (done in serial_init()). Otherwise 180 the drivers may conflict and you will get strange output. 181 182choice 183 prompt "Select which UART will provide the debug UART" 184 depends on DEBUG_UART 185 default DEBUG_UART_NS16550 186 187config DEBUG_UART_ALTERA_JTAGUART 188 bool "Altera JTAG UART" 189 help 190 Select this to enable a debug UART using the altera_jtag_uart 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 194config DEBUG_UART_ALTERA_UART 195 bool "Altera UART" 196 help 197 Select this to enable a debug UART using the altera_uart driver. 198 You will need to provide parameters to make this work. The driver will 199 be available until the real driver model serial is running. 200 201config DEBUG_UART_AR933X 202 bool "QCA/Atheros ar933x" 203 depends on AR933X_UART 204 help 205 Select this to enable a debug UART using the ar933x uart driver. 206 You will need to provide parameters to make this work. The 207 driver will be available until the real driver model serial is 208 running. 209 210config DEBUG_ARC_SERIAL 211 bool "ARC UART" 212 depends on ARC_SERIAL 213 help 214 Select this to enable a debug UART using the ARC UART driver. 215 You will need to provide parameters to make this work. The 216 driver will be available until the real driver model serial is 217 running. 218 219config DEBUG_UART_ATMEL 220 bool "Atmel USART" 221 help 222 Select this to enable a debug UART using the atmel usart driver. You 223 will need to provide parameters to make this work. The driver will 224 be available until the real driver-model serial is running. 225 226config DEBUG_UART_BCM6345 227 bool "BCM6345 UART" 228 depends on BCM6345_SERIAL 229 help 230 Select this to enable a debug UART on BCM6345 SoCs. 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_NS16550 235 bool "ns16550" 236 help 237 Select this to enable a debug UART using the ns16550 driver. You 238 will need to provide parameters to make this work. The driver will 239 be available until the real driver model serial is running. 240 241config DEBUG_EFI_CONSOLE 242 bool "EFI" 243 depends on EFI_APP 244 help 245 Select this to enable a debug console which calls back to EFI to 246 output to the console. This can be useful for early debugging of 247 U-Boot when running on top of EFI (Extensive Firmware Interface). 248 This is a type of BIOS used by PCs. 249 250config DEBUG_UART_S5P 251 bool "Samsung S5P" 252 help 253 Select this to enable a debug UART using the serial_s5p driver. You 254 will need to provide parameters to make this work. The driver will 255 be available until the real driver-model serial is running. 256 257config DEBUG_UART_MESON 258 bool "Amlogic Meson" 259 depends on MESON_SERIAL 260 help 261 Select this to enable a debug UART using the serial_meson driver. You 262 will need to provide parameters to make this work. The driver will 263 be available until the real driver-model serial is running. 264 265config DEBUG_UART_UARTLITE 266 bool "Xilinx Uartlite" 267 help 268 Select this to enable a debug UART using the serial_uartlite driver. 269 You will need to provide parameters to make this work. The driver will 270 be available until the real driver-model serial is running. 271 272config DEBUG_UART_ARM_DCC 273 bool "ARM DCC" 274 help 275 Select this to enable a debug UART using the ARM JTAG DCC port. 276 The DCC port can be used for very early debugging and doesn't require 277 any additional setting like address/baudrate/clock. On systems without 278 any serial interface this is the easiest way how to get console. 279 Every ARM core has own DCC port which is the part of debug interface. 280 This port is available at least on ARMv6, ARMv7, ARMv8 and XScale 281 architectures. 282 283config DEBUG_MVEBU_A3700_UART 284 bool "Marvell Armada 3700" 285 help 286 Select this to enable a debug UART using the serial_mvebu driver. You 287 will need to provide parameters to make this work. The driver will 288 be available until the real driver-model serial is running. 289 290config DEBUG_UART_ZYNQ 291 bool "Xilinx Zynq" 292 help 293 Select this to enable a debug UART using the serial_zynq driver. You 294 will need to provide parameters to make this work. The driver will 295 be available until the real driver-model serial is running. 296 297config DEBUG_UART_APBUART 298 depends on LEON3 299 bool "Gaisler APBUART" 300 help 301 Select this to enable a debug UART using the serial_leon3 driver. You 302 will need to provide parameters to make this work. The driver will 303 be available until the real driver model serial is running. 304 305config DEBUG_UART_PL010 306 bool "pl010" 307 help 308 Select this to enable a debug UART using the pl01x driver with the 309 PL010 UART type. You will need to provide parameters to make this 310 work. The driver will be available until the real driver model 311 serial is running. 312 313config DEBUG_UART_PL011 314 bool "pl011" 315 help 316 Select this to enable a debug UART using the pl01x driver with the 317 PL011 UART type. You will need to provide parameters to make this 318 work. The driver will be available until the real driver model 319 serial is running. 320 321config DEBUG_UART_PIC32 322 bool "Microchip PIC32" 323 depends on PIC32_SERIAL 324 help 325 Select this to enable a debug UART using the serial_pic32 driver. You 326 will need to provide parameters to make this work. The driver will 327 be available until the real driver model serial is running. 328 329config DEBUG_UART_MXC 330 bool "IMX Serial port" 331 depends on MXC_UART 332 help 333 Select this to enable a debug UART using the serial_mxc driver. You 334 will need to provide parameters to make this work. The driver will 335 be available until the real driver model serial is running. 336 337config DEBUG_UART_SANDBOX 338 bool "sandbox" 339 depends on SANDBOX_SERIAL 340 help 341 Select this to enable the debug UART using the sandbox driver. This 342 provides basic serial output from the console without needing to 343 start up driver model. The driver will be available until the real 344 driver model serial is running. 345 346config DEBUG_UART_STM32 347 bool "STMicroelectronics STM32" 348 depends on STM32_SERIAL 349 help 350 Select this to enable a debug UART using the serial_stm32 driver 351 You will need to provide parameters to make this work. 352 The driver will be available until the real driver model 353 serial is running. 354 355config DEBUG_UART_UNIPHIER 356 bool "UniPhier on-chip UART" 357 depends on ARCH_UNIPHIER 358 help 359 Select this to enable a debug UART using the UniPhier on-chip UART. 360 You will need to provide DEBUG_UART_BASE to make this work. The 361 driver will be available until the real driver-model serial is 362 running. 363 364config DEBUG_UART_OMAP 365 bool "OMAP uart" 366 help 367 Select this to enable a debug UART using the omap ns16550 driver. 368 You will need to provide parameters to make this work. The driver 369 will be available until the real driver model serial is running. 370 371config DEBUG_UART_MTK 372 bool "MediaTek High-speed UART" 373 depends on MTK_SERIAL 374 help 375 Select this to enable a debug UART using the MediaTek High-speed 376 UART driver. 377 You will need to provide parameters to make this work. The 378 driver will be available until the real driver model serial is 379 running. 380 381endchoice 382 383config DEBUG_UART_BASE 384 hex "Base address of UART" 385 depends on DEBUG_UART 386 default 0 if DEBUG_UART_SANDBOX 387 help 388 This is the base address of your UART for memory-mapped UARTs. 389 390 A default should be provided by your board, but if not you will need 391 to use the correct value here. 392 393config DEBUG_UART_CLOCK 394 int "UART input clock" 395 depends on DEBUG_UART 396 default 0 if DEBUG_UART_SANDBOX 397 help 398 The UART input clock determines the speed of the internal UART 399 circuitry. The baud rate is derived from this by dividing the input 400 clock down. 401 402 A default should be provided by your board, but if not you will need 403 to use the correct value here. 404 405config DEBUG_UART_SHIFT 406 int "UART register shift" 407 depends on DEBUG_UART 408 default 0 if DEBUG_UART 409 help 410 Some UARTs (notably ns16550) support different register layouts 411 where the registers are spaced either as bytes, words or some other 412 value. Use this value to specify the shift to use, where 0=byte 413 registers, 2=32-bit word registers, etc. 414 415config DEBUG_UART_BOARD_INIT 416 bool "Enable board-specific debug UART init" 417 depends on DEBUG_UART 418 help 419 Some boards need to set things up before the debug UART can be used. 420 On these boards a call to debug_uart_init() is insufficient. When 421 this option is enabled, the function board_debug_uart_init() will 422 be called when debug_uart_init() is called. You can put any code 423 here that is needed to set up the UART ready for use, such as set 424 pin multiplexing or enable clocks. 425 426config DEBUG_UART_ANNOUNCE 427 bool "Show a message when the debug UART starts up" 428 depends on DEBUG_UART 429 help 430 Enable this option to show a message when the debug UART is ready 431 for use. You will see a message like "<debug_uart> " as soon as 432 U-Boot has the UART ready for use (i.e. your code calls 433 debug_uart_init()). This can be useful just as a check that 434 everything is working. 435 436config DEBUG_UART_SKIP_INIT 437 bool "Skip UART initialization" 438 help 439 Select this if the UART you want to use for debug output is already 440 initialized by the time U-Boot starts its execution. 441 442config ALTERA_JTAG_UART 443 bool "Altera JTAG UART support" 444 depends on DM_SERIAL 445 help 446 Select this to enable an JTAG UART for Altera devices.The JTAG UART 447 core implements a method to communicate serial character streams 448 between a host PC and a Qsys system on an Altera FPGA. Please find 449 details on the "Embedded Peripherals IP User Guide" of Altera. 450 451config ALTERA_JTAG_UART_BYPASS 452 bool "Bypass output when no connection" 453 depends on ALTERA_JTAG_UART 454 help 455 Bypass console output and keep going even if there is no JTAG 456 terminal connection with the host. The console output will resume 457 once the JTAG terminal is connected. Without the bypass, the console 458 output will wait forever until a JTAG terminal is connected. If you 459 not are sure, say Y. 460 461config ALTERA_UART 462 bool "Altera UART support" 463 depends on DM_SERIAL 464 help 465 Select this to enable an UART for Altera devices. Please find 466 details on the "Embedded Peripherals IP User Guide" of Altera. 467 468config AR933X_UART 469 bool "QCA/Atheros ar933x UART support" 470 depends on DM_SERIAL && SOC_AR933X 471 help 472 Select this to enable UART support for QCA/Atheros ar933x 473 devices. This driver uses driver model and requires a device 474 tree binding to operate, please refer to the document at 475 doc/device-tree-bindings/serial/qca,ar9330-uart.txt. 476 477config ARC_SERIAL 478 bool "ARC UART support" 479 depends on DM_SERIAL 480 help 481 Select this to enable support for ARC UART now typically 482 only used in Synopsys DesignWare ARC simulators like nSIM. 483 484config ATMEL_USART 485 bool "Atmel USART support" 486 help 487 Select this to enable USART support for Atmel SoCs. It can be 488 configured in the device tree, and input clock frequency can 489 be got from the clk node. 490 491config BCM283X_MU_SERIAL 492 bool "Support for BCM283x Mini-UART" 493 depends on DM_SERIAL && ARCH_BCM283X 494 default y 495 help 496 Select this to enable Mini-UART support on BCM283X family of SoCs. 497 498config BCM283X_PL011_SERIAL 499 bool "Support for BCM283x PL011 UART" 500 depends on PL01X_SERIAL && ARCH_BCM283X 501 default y 502 help 503 Select this to enable an overriding PL011 driver for BCM283X SoCs 504 that supports automatic disable, so that it only gets used when 505 the UART is actually muxed. 506 507config BCM6345_SERIAL 508 bool "Support for BCM6345 UART" 509 depends on DM_SERIAL 510 help 511 Select this to enable UART on BCM6345 SoCs. 512 513config FSL_LINFLEXUART 514 bool "Freescale Linflex UART support" 515 depends on DM_SERIAL 516 help 517 Select this to enable the Linflex serial module found on some 518 NXP SoCs like S32V234. 519 520config FSL_LPUART 521 bool "Freescale LPUART support" 522 help 523 Select this to enable a Low Power UART for Freescale VF610 and 524 QorIQ Layerscape devices. 525 526config MVEBU_A3700_UART 527 bool "UART support for Armada 3700" 528 default n 529 help 530 Choose this option to add support for UART driver on the Marvell 531 Armada 3700 SoC. The base address is configured via DT. 532 533config MXC_UART 534 bool "IMX serial port support" 535 depends on MX5 || MX6 536 help 537 If you have a machine based on a Motorola IMX CPU you 538 can enable its onboard serial port by enabling this option. 539 540config NULLDEV_SERIAL 541 bool "Null serial device" 542 help 543 Select this to enable null serial device support. A null serial 544 device merely acts as a placeholder for a serial device and does 545 nothing for all it's operation. 546 547config PIC32_SERIAL 548 bool "Support for Microchip PIC32 on-chip UART" 549 depends on DM_SERIAL && MACH_PIC32 550 default y 551 help 552 Support for the UART found on Microchip PIC32 SoC's. 553 554config SYS_NS16550 555 bool "NS16550 UART or compatible" 556 help 557 Support NS16550 UART or compatible. This can be enabled in the 558 device tree with the correct input clock frequency. If the input 559 clock frequency is not defined in the device tree, the macro 560 CONFIG_SYS_NS16550_CLK defined in a legacy board header file will 561 be used. It can be a constant or a function to get clock, eg, 562 get_serial_clock(). 563 564config INTEL_MID_SERIAL 565 bool "Intel MID platform UART support" 566 depends on DM_SERIAL && OF_CONTROL 567 depends on INTEL_MID 568 select SYS_NS16550 569 help 570 Select this to enable a UART for Intel MID platforms. 571 This uses the ns16550 driver as a library. 572 573config PL010_SERIAL 574 bool "ARM PL010 driver" 575 depends on !DM_SERIAL 576 help 577 Select this to enable a UART for platforms using PL010. 578 579config PL011_SERIAL 580 bool "ARM PL011 driver" 581 depends on !DM_SERIAL 582 help 583 Select this to enable a UART for platforms using PL011. 584 585config PL01X_SERIAL 586 bool "ARM PL010 and PL011 driver" 587 depends on DM_SERIAL 588 help 589 Select this to enable a UART for platforms using PL010 or PL011. 590 591config ROCKCHIP_SERIAL 592 bool "Rockchip on-chip UART support" 593 depends on DM_SERIAL && SPL_OF_PLATDATA 594 help 595 Select this to enable a debug UART for Rockchip devices when using 596 CONFIG_SPL_OF_PLATDATA (i.e. a compiled-in device tree replacemenmt). 597 This uses the ns16550 driver, converting the platdata from of-platdata 598 to the ns16550 format. 599 600config SANDBOX_SERIAL 601 bool "Sandbox UART support" 602 depends on SANDBOX 603 help 604 Select this to enable a seral UART for sandbox. This is required to 605 operate correctly, otherwise you will see no serial output from 606 sandbox. The emulated UART will display to the console and console 607 input will be fed into the UART. This allows you to interact with 608 U-Boot. 609 610 The operation of the console is controlled by the -t command-line 611 flag. In raw mode, U-Boot sees all characters from the terminal 612 before they are processed, including Ctrl-C. In cooked mode, Ctrl-C 613 is processed by the terminal, and terminates U-Boot. Valid options 614 are: 615 616 -t raw-with-sigs Raw mode, Ctrl-C will terminate U-Boot 617 -t raw Raw mode, Ctrl-C is processed by U-Boot 618 -t cooked Cooked mode, Ctrl-C terminates 619 620config SCIF_CONSOLE 621 bool "Renesas SCIF UART support" 622 depends on SH || ARCH_RMOBILE 623 help 624 Select this to enable Renesas SCIF UART. To operate serial ports 625 on systems with RCar or SH SoCs, say Y to this option. If unsure, 626 say N. 627 628config UNIPHIER_SERIAL 629 bool "Support for UniPhier on-chip UART" 630 depends on ARCH_UNIPHIER 631 default y 632 help 633 If you have a UniPhier based board and want to use the on-chip 634 serial ports, say Y to this option. If unsure, say N. 635 636config XILINX_UARTLITE 637 bool "Xilinx Uarlite support" 638 depends on DM_SERIAL && (MICROBLAZE || ARCH_ZYNQ || ARCH_ZYNQMP || 4xx) 639 help 640 If you have a Xilinx based board and want to use the uartlite 641 serial ports, say Y to this option. If unsure, say N. 642 643config MESON_SERIAL 644 bool "Support for Amlogic Meson UART" 645 depends on DM_SERIAL && ARCH_MESON 646 help 647 If you have an Amlogic Meson based board and want to use the on-chip 648 serial ports, say Y to this option. If unsure, say N. 649 650config MSM_SERIAL 651 bool "Qualcomm on-chip UART" 652 depends on DM_SERIAL 653 help 654 Support Data Mover UART used on Qualcomm Snapdragon SoCs. 655 It should support all Qualcomm devices with UARTDM version 1.4, 656 for example APQ8016 and MSM8916. 657 Single baudrate is supported in current implementation (115200). 658 659config OMAP_SERIAL 660 bool "Support for OMAP specific UART" 661 depends on DM_SERIAL 662 default y if (ARCH_OMAP2PLUS || ARCH_K3) 663 select SYS_NS16550 664 help 665 If you have an TI based SoC and want to use the on-chip serial 666 port, say Y to this option. If unsure say N. 667 668config OWL_SERIAL 669 bool "Actions Semi OWL UART" 670 depends on DM_SERIAL && ARCH_OWL 671 help 672 If you have a Actions Semi OWL based board and want to use the on-chip 673 serial port, say Y to this option. If unsure, say N. 674 Single baudrate is supported in current implementation (115200). 675 676config PXA_SERIAL 677 bool "PXA serial port support" 678 help 679 If you have a machine based on a Marvell XScale PXA2xx CPU you 680 can enable its onboard serial ports by enabling this option. 681 682config STI_ASC_SERIAL 683 bool "STMicroelectronics on-chip UART" 684 depends on DM_SERIAL && ARCH_STI 685 help 686 Select this to enable Asynchronous Serial Controller available 687 on STiH410 SoC. This is a basic implementation, it supports 688 following baudrate 9600, 19200, 38400, 57600 and 115200. 689 690config STM32_SERIAL 691 bool "STMicroelectronics STM32 SoCs on-chip UART" 692 depends on DM_SERIAL && (STM32F4 || STM32F7 || STM32H7 || ARCH_STM32MP) 693 help 694 If you have a machine based on a STM32 F4, F7, H7 or MP1 SOC 695 you can enable its onboard serial ports, say Y to this option. 696 If unsure, say N. 697 698config ZYNQ_SERIAL 699 bool "Cadence (Xilinx Zynq) UART support" 700 depends on DM_SERIAL && (MICROBLAZE || ARCH_ZYNQ || ARCH_ZYNQMP || ARCH_ZYNQMP_R5) 701 help 702 This driver supports the Cadence UART. It is found e.g. in Xilinx 703 Zynq/ZynqMP. 704 705config MTK_SERIAL 706 bool "MediaTek High-speed UART support" 707 depends on DM_SERIAL 708 help 709 Select this to enable UART support for MediaTek High-speed UART 710 devices. This driver uses driver model and requires a device 711 tree binding to operate. 712 The High-speed UART is compatible with the ns16550a UART and have 713 its own high-speed registers. 714 715config MPC8XX_CONS 716 bool "Console driver for MPC8XX" 717 depends on MPC8xx 718 default y 719 720choice 721 prompt "Console port" 722 default 8xx_CONS_SMC1 723 depends on MPC8XX_CONS 724 help 725 Depending on board, select one serial port 726 (CONFIG_8xx_CONS_SMC1 or CONFIG_8xx_CONS_SMC2) 727 728config 8xx_CONS_SMC1 729 bool "SMC1" 730 731config 8xx_CONS_SMC2 732 bool "SMC2" 733 734endchoice 735 736config SYS_SMC_RXBUFLEN 737 int "Console Rx buffer length" 738 depends on MPC8XX_CONS 739 default 1 740 help 741 With CONFIG_SYS_SMC_RXBUFLEN it is possible to define 742 the maximum receive buffer length for the SMC. 743 This option is actual only for 8xx possible. 744 If using CONFIG_SYS_SMC_RXBUFLEN also CONFIG_SYS_MAXIDLE 745 must be defined, to setup the maximum idle timeout for 746 the SMC. 747 748config SYS_MAXIDLE 749 int "maximum idle timeout" 750 depends on MPC8XX_CONS 751 default 0 752 753config SYS_BRGCLK_PRESCALE 754 int "BRG Clock Prescale" 755 depends on MPC8XX_CONS 756 default 1 757 758config SYS_SDSR 759 hex "SDSR Value" 760 depends on MPC8XX_CONS 761 default 0x83 762 763config SYS_SDMR 764 hex "SDMR Value" 765 depends on MPC8XX_CONS 766 default 0 767 768endmenu 769