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_IRQ_BUFFER 68 bool "Enable RX interrupt buffer for serial input" 69 depends on DM_SERIAL 70 default n 71 help 72 Enable RX interrupt buffer support for the serial driver. 73 This enables pasting longer strings, even when the RX FIFO 74 of the UART is not big enough (e.g. 16 bytes on the normal 75 NS16550). 76 77config SPL_DM_SERIAL 78 bool "Enable Driver Model for serial drivers in SPL" 79 depends on DM_SERIAL 80 default y if SPL && DM_SERIAL 81 help 82 Enable driver model for serial in SPL. This replaces 83 drivers/serial/serial.c with the serial uclass, which 84 implements serial_putc() etc. The uclass interface is 85 defined in include/serial.h. 86 87config TPL_DM_SERIAL 88 bool "Enable Driver Model for serial drivers in TPL" 89 depends on DM_SERIAL 90 default y if TPL && DM_SERIAL 91 help 92 Enable driver model for serial in TPL. This replaces 93 drivers/serial/serial.c with the serial uclass, which 94 implements serial_putc() etc. The uclass interface is 95 defined in include/serial.h. 96 97config DEBUG_UART 98 bool "Enable an early debug UART for debugging" 99 help 100 The debug UART is intended for use very early in U-Boot to debug 101 problems when an ICE or other debug mechanism is not available. 102 103 To use it you should: 104 - Make sure your UART supports this interface 105 - Enable CONFIG_DEBUG_UART 106 - Enable the CONFIG for your UART to tell it to provide this interface 107 (e.g. CONFIG_DEBUG_UART_NS16550) 108 - Define the required settings as needed (see below) 109 - Call debug_uart_init() before use 110 - Call debug_uart_putc() to output a character 111 112 Depending on your platform it may be possible to use this UART before 113 a stack is available. 114 115 If your UART does not support this interface you can probably add 116 support quite easily. Remember that you cannot use driver model and 117 it is preferred to use no stack. 118 119 You must not use this UART once driver model is working and the 120 serial drivers are up and running (done in serial_init()). Otherwise 121 the drivers may conflict and you will get strange output. 122 123choice 124 prompt "Select which UART will provide the debug UART" 125 depends on DEBUG_UART 126 default DEBUG_UART_NS16550 127 128config DEBUG_UART_ALTERA_JTAGUART 129 bool "Altera JTAG UART" 130 help 131 Select this to enable a debug UART using the altera_jtag_uart driver. 132 You will need to provide parameters to make this work. The driver will 133 be available until the real driver model serial is running. 134 135config DEBUG_UART_ALTERA_UART 136 bool "Altera UART" 137 help 138 Select this to enable a debug UART using the altera_uart driver. 139 You will need to provide parameters to make this work. The driver will 140 be available until the real driver model serial is running. 141 142config DEBUG_UART_AR933X 143 bool "QCA/Atheros ar933x" 144 depends on AR933X_UART 145 help 146 Select this to enable a debug UART using the ar933x uart driver. 147 You will need to provide parameters to make this work. The 148 driver will be available until the real driver model serial is 149 running. 150 151config DEBUG_UART_ATMEL 152 bool "Atmel USART" 153 help 154 Select this to enable a debug UART using the atmel usart driver. You 155 will need to provide parameters to make this work. The driver will 156 be available until the real driver-model serial is running. 157 158config DEBUG_UART_BCM6345 159 bool "BCM6345 UART" 160 depends on BCM6345_SERIAL 161 help 162 Select this to enable a debug UART on BCM6345 SoCs. You 163 will need to provide parameters to make this work. The driver will 164 be available until the real driver model serial is running. 165 166config DEBUG_UART_NS16550 167 bool "ns16550" 168 help 169 Select this to enable a debug UART using the ns16550 driver. You 170 will need to provide parameters to make this work. The driver will 171 be available until the real driver model serial is running. 172 173config DEBUG_EFI_CONSOLE 174 bool "EFI" 175 depends on EFI_APP 176 help 177 Select this to enable a debug console which calls back to EFI to 178 output to the console. This can be useful for early debugging of 179 U-Boot when running on top of EFI (Extensive Firmware Interface). 180 This is a type of BIOS used by PCs. 181 182config DEBUG_UART_S5P 183 bool "Samsung S5P" 184 help 185 Select this to enable a debug UART using the serial_s5p driver. You 186 will need to provide parameters to make this work. The driver will 187 be available until the real driver-model serial is running. 188 189config DEBUG_UART_MESON 190 bool "Amlogic Meson" 191 depends on MESON_SERIAL 192 help 193 Select this to enable a debug UART using the serial_meson driver. You 194 will need to provide parameters to make this work. The driver will 195 be available until the real driver-model serial is running. 196 197config DEBUG_UART_UARTLITE 198 bool "Xilinx Uartlite" 199 help 200 Select this to enable a debug UART using the serial_uartlite driver. 201 You will need to provide parameters to make this work. The driver will 202 be available until the real driver-model serial is running. 203 204config DEBUG_UART_ARM_DCC 205 bool "ARM DCC" 206 help 207 Select this to enable a debug UART using the ARM JTAG DCC port. 208 The DCC port can be used for very early debugging and doesn't require 209 any additional setting like address/baudrate/clock. On systems without 210 any serial interface this is the easiest way how to get console. 211 Every ARM core has own DCC port which is the part of debug interface. 212 This port is available at least on ARMv6, ARMv7, ARMv8 and XScale 213 architectures. 214 215config DEBUG_MVEBU_A3700_UART 216 bool "Marvell Armada 3700" 217 help 218 Select this to enable a debug UART using the serial_mvebu 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_UART_ZYNQ 223 bool "Xilinx Zynq" 224 help 225 Select this to enable a debug UART using the serial_zynq driver. You 226 will need to provide parameters to make this work. The driver will 227 be available until the real driver-model serial is running. 228 229config DEBUG_UART_APBUART 230 depends on LEON3 231 bool "Gaisler APBUART" 232 help 233 Select this to enable a debug UART using the serial_leon3 driver. You 234 will need to provide parameters to make this work. The driver will 235 be available until the real driver model serial is running. 236 237config DEBUG_UART_PL010 238 bool "pl010" 239 help 240 Select this to enable a debug UART using the pl01x driver with the 241 PL010 UART type. You will need to provide parameters to make this 242 work. The driver will be available until the real driver model 243 serial is running. 244 245config DEBUG_UART_PL011 246 bool "pl011" 247 help 248 Select this to enable a debug UART using the pl01x driver with the 249 PL011 UART type. You will need to provide parameters to make this 250 work. The driver will be available until the real driver model 251 serial is running. 252 253config DEBUG_UART_PIC32 254 bool "Microchip PIC32" 255 depends on PIC32_SERIAL 256 help 257 Select this to enable a debug UART using the serial_pic32 driver. You 258 will need to provide parameters to make this work. The driver will 259 be available until the real driver model serial is running. 260 261config DEBUG_UART_MXC 262 bool "IMX Serial port" 263 depends on MXC_UART 264 help 265 Select this to enable a debug UART using the serial_mxc driver. You 266 will need to provide parameters to make this work. The driver will 267 be available until the real driver model serial is running. 268 269config DEBUG_UART_UNIPHIER 270 bool "UniPhier on-chip UART" 271 depends on ARCH_UNIPHIER 272 help 273 Select this to enable a debug UART using the UniPhier on-chip UART. 274 You will need to provide DEBUG_UART_BASE to make this work. The 275 driver will be available until the real driver-model serial is 276 running. 277 278config DEBUG_UART_OMAP 279 bool "OMAP uart" 280 help 281 Select this to enable a debug UART using the omap ns16550 driver. 282 You will need to provide parameters to make this work. The driver 283 will be available until the real driver model serial is running. 284 285endchoice 286 287config DEBUG_UART_BASE 288 hex "Base address of UART" 289 depends on DEBUG_UART 290 help 291 This is the base address of your UART for memory-mapped UARTs. 292 293 A default should be provided by your board, but if not you will need 294 to use the correct value here. 295 296config DEBUG_UART_CLOCK 297 int "UART input clock" 298 depends on DEBUG_UART 299 help 300 The UART input clock determines the speed of the internal UART 301 circuitry. The baud rate is derived from this by dividing the input 302 clock down. 303 304 A default should be provided by your board, but if not you will need 305 to use the correct value here. 306 307config DEBUG_UART_SHIFT 308 int "UART register shift" 309 depends on DEBUG_UART 310 default 0 if DEBUG_UART 311 help 312 Some UARTs (notably ns16550) support different register layouts 313 where the registers are spaced either as bytes, words or some other 314 value. Use this value to specify the shift to use, where 0=byte 315 registers, 2=32-bit word registers, etc. 316 317config DEBUG_UART_BOARD_INIT 318 bool "Enable board-specific debug UART init" 319 depends on DEBUG_UART 320 help 321 Some boards need to set things up before the debug UART can be used. 322 On these boards a call to debug_uart_init() is insufficient. When 323 this option is enabled, the function board_debug_uart_init() will 324 be called when debug_uart_init() is called. You can put any code 325 here that is needed to set up the UART ready for use, such as set 326 pin multiplexing or enable clocks. 327 328config DEBUG_UART_ANNOUNCE 329 bool "Show a message when the debug UART starts up" 330 depends on DEBUG_UART 331 help 332 Enable this option to show a message when the debug UART is ready 333 for use. You will see a message like "<debug_uart> " as soon as 334 U-Boot has the UART ready for use (i.e. your code calls 335 debug_uart_init()). This can be useful just as a check that 336 everything is working. 337 338config DEBUG_UART_SKIP_INIT 339 bool "Skip UART initialization" 340 help 341 Select this if the UART you want to use for debug output is already 342 initialized by the time U-Boot starts its execution. 343 344config ALTERA_JTAG_UART 345 bool "Altera JTAG UART support" 346 depends on DM_SERIAL 347 help 348 Select this to enable an JTAG UART for Altera devices.The JTAG UART 349 core implements a method to communicate serial character streams 350 between a host PC and a Qsys system on an Altera FPGA. Please find 351 details on the "Embedded Peripherals IP User Guide" of Altera. 352 353config ALTERA_JTAG_UART_BYPASS 354 bool "Bypass output when no connection" 355 depends on ALTERA_JTAG_UART 356 help 357 Bypass console output and keep going even if there is no JTAG 358 terminal connection with the host. The console output will resume 359 once the JTAG terminal is connected. Without the bypass, the console 360 output will wait forever until a JTAG terminal is connected. If you 361 not are sure, say Y. 362 363config ALTERA_UART 364 bool "Altera UART support" 365 depends on DM_SERIAL 366 help 367 Select this to enable an UART for Altera devices. Please find 368 details on the "Embedded Peripherals IP User Guide" of Altera. 369 370config AR933X_UART 371 bool "QCA/Atheros ar933x UART support" 372 depends on DM_SERIAL && SOC_AR933X 373 help 374 Select this to enable UART support for QCA/Atheros ar933x 375 devices. This driver uses driver model and requires a device 376 tree binding to operate, please refer to the document at 377 doc/device-tree-bindings/serial/qca,ar9330-uart.txt. 378 379config ATMEL_USART 380 bool "Atmel USART support" 381 help 382 Select this to enable USART support for Atmel SoCs. It can be 383 configured in the device tree, and input clock frequency can 384 be got from the clk node. 385 386config BCM6345_SERIAL 387 bool "Support for BCM6345 UART" 388 depends on DM_SERIAL && ARCH_BMIPS 389 help 390 Select this to enable UART on BCM6345 SoCs. 391 392config FSL_LPUART 393 bool "Freescale LPUART support" 394 help 395 Select this to enable a Low Power UART for Freescale VF610 and 396 QorIQ Layerscape devices. 397 398config MVEBU_A3700_UART 399 bool "UART support for Armada 3700" 400 default n 401 help 402 Choose this option to add support for UART driver on the Marvell 403 Armada 3700 SoC. The base address is configured via DT. 404 405config MXC_UART 406 bool "IMX serial port support" 407 depends on MX5 || MX6 408 help 409 If you have a machine based on a Motorola IMX CPU you 410 can enable its onboard serial port by enabling this option. 411 412config PIC32_SERIAL 413 bool "Support for Microchip PIC32 on-chip UART" 414 depends on DM_SERIAL && MACH_PIC32 415 default y 416 help 417 Support for the UART found on Microchip PIC32 SoC's. 418 419config SYS_NS16550 420 bool "NS16550 UART or compatible" 421 help 422 Support NS16550 UART or compatible. This can be enabled in the 423 device tree with the correct input clock frequency. If the input 424 clock frequency is not defined in the device tree, the macro 425 CONFIG_SYS_NS16550_CLK defined in a legacy board header file will 426 be used. It can be a constant or a function to get clock, eg, 427 get_serial_clock(). 428 429config INTEL_MID_SERIAL 430 bool "Intel MID platform UART support" 431 depends on DM_SERIAL && OF_CONTROL 432 depends on INTEL_MID 433 select SYS_NS16550 434 help 435 Select this to enable a UART for Intel MID platforms. 436 This uses the ns16550 driver as a library. 437 438config ROCKCHIP_SERIAL 439 bool "Rockchip on-chip UART support" 440 depends on DM_SERIAL && SPL_OF_PLATDATA 441 help 442 Select this to enable a debug UART for Rockchip devices when using 443 CONFIG_SPL_OF_PLATDATA (i.e. a compiled-in device tree replacemenmt). 444 This uses the ns16550 driver, converting the platdata from of-platdata 445 to the ns16550 format. 446 447config SANDBOX_SERIAL 448 bool "Sandbox UART support" 449 depends on SANDBOX 450 help 451 Select this to enable a seral UART for sandbox. This is required to 452 operate correctly, otherwise you will see no serial output from 453 sandbox. The emulated UART will display to the console and console 454 input will be fed into the UART. This allows you to interact with 455 U-Boot. 456 457 The operation of the console is controlled by the -t command-line 458 flag. In raw mode, U-Boot sees all characters from the terminal 459 before they are processed, including Ctrl-C. In cooked mode, Ctrl-C 460 is processed by the terminal, and terminates U-Boot. Valid options 461 are: 462 463 -t raw-with-sigs Raw mode, Ctrl-C will terminate U-Boot 464 -t raw Raw mode, Ctrl-C is processed by U-Boot 465 -t cooked Cooked mode, Ctrl-C terminates 466 467config SCIF_CONSOLE 468 bool "Renesas SCIF UART support" 469 depends on SH || ARCH_RMOBILE 470 help 471 Select this to enable Renesas SCIF UART. To operate serial ports 472 on systems with RCar or SH SoCs, say Y to this option. If unsure, 473 say N. 474 475config UNIPHIER_SERIAL 476 bool "Support for UniPhier on-chip UART" 477 depends on ARCH_UNIPHIER 478 default y 479 help 480 If you have a UniPhier based board and want to use the on-chip 481 serial ports, say Y to this option. If unsure, say N. 482 483config XILINX_UARTLITE 484 bool "Xilinx Uarlite support" 485 depends on DM_SERIAL && (MICROBLAZE || ARCH_ZYNQ || ARCH_ZYNQMP || 4xx) 486 help 487 If you have a Xilinx based board and want to use the uartlite 488 serial ports, say Y to this option. If unsure, say N. 489 490config MESON_SERIAL 491 bool "Support for Amlogic Meson UART" 492 depends on DM_SERIAL && ARCH_MESON 493 help 494 If you have an Amlogic Meson based board and want to use the on-chip 495 serial ports, say Y to this option. If unsure, say N. 496 497config MSM_SERIAL 498 bool "Qualcomm on-chip UART" 499 depends on DM_SERIAL 500 help 501 Support Data Mover UART used on Qualcomm Snapdragon SoCs. 502 It should support all Qualcomm devices with UARTDM version 1.4, 503 for example APQ8016 and MSM8916. 504 Single baudrate is supported in current implementation (115200). 505 506config PXA_SERIAL 507 bool "PXA serial port support" 508 help 509 If you have a machine based on a Marvell XScale PXA2xx CPU you 510 can enable its onboard serial ports by enabling this option. 511 512config STI_ASC_SERIAL 513 bool "STMicroelectronics on-chip UART" 514 depends on DM_SERIAL && ARCH_STI 515 help 516 Select this to enable Asynchronous Serial Controller available 517 on STiH410 SoC. This is a basic implementation, it supports 518 following baudrate 9600, 19200, 38400, 57600 and 115200. 519 520config STM32X7_SERIAL 521 bool "STMicroelectronics STM32 SoCs on-chip UART" 522 depends on DM_SERIAL && STM32F7 523 help 524 If you have a machine based on a STM32 F7 you can enable its 525 onboard serial ports, say Y to this option. If unsure, say N. 526 527config MPC8XX_CONS 528 bool "Console driver for MPC8XX" 529 depends on 8xx 530 default y 531 532choice 533 prompt "Console port" 534 default 8xx_CONS_SMC1 535 depends on MPC8XX_CONS 536 help 537 Depending on board, select one serial port 538 (CONFIG_8xx_CONS_SMC1 or CONFIG_8xx_CONS_SMC2) 539 540config 8xx_CONS_SMC1 541 bool "SMC1" 542 543config 8xx_CONS_SMC2 544 bool "SMC2" 545 546endchoice 547 548config SYS_SMC_RXBUFLEN 549 int "Console Rx buffer length" 550 depends on MPC8XX_CONS 551 default 1 552 help 553 With CONFIG_SYS_SMC_RXBUFLEN it is possible to define 554 the maximum receive buffer length for the SMC. 555 This option is actual only for 8xx possible. 556 If using CONFIG_SYS_SMC_RXBUFLEN also CONFIG_SYS_MAXIDLE 557 must be defined, to setup the maximum idle timeout for 558 the SMC. 559 560config SYS_MAXIDLE 561 int "maximum idle timeout" 562 depends on MPC8XX_CONS 563 default 0 564 565config SYS_BRGCLK_PRESCALE 566 int "BRG Clock Prescale" 567 depends on MPC8XX_CONS 568 default 1 569 570config SYS_SDSR 571 hex "SDSR Value" 572 depends on MPC8XX_CONS 573 default 0x83 574 575config SYS_SDMR 576 hex "SDMR Value" 577 depends on MPC8XX_CONS 578 default 0 579 580endmenu 581