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 SPL_DM_SERIAL 68 bool "Enable Driver Model for serial drivers in SPL" 69 depends on DM_SERIAL 70 default y if SPL && DM_SERIAL 71 help 72 Enable driver model for serial in SPL. This replaces 73 drivers/serial/serial.c with the serial uclass, which 74 implements serial_putc() etc. The uclass interface is 75 defined in include/serial.h. 76 77config TPL_DM_SERIAL 78 bool "Enable Driver Model for serial drivers in TPL" 79 depends on DM_SERIAL 80 default y if TPL && DM_SERIAL 81 help 82 Enable driver model for serial in TPL. 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 DEBUG_UART 88 bool "Enable an early debug UART for debugging" 89 help 90 The debug UART is intended for use very early in U-Boot to debug 91 problems when an ICE or other debug mechanism is not available. 92 93 To use it you should: 94 - Make sure your UART supports this interface 95 - Enable CONFIG_DEBUG_UART 96 - Enable the CONFIG for your UART to tell it to provide this interface 97 (e.g. CONFIG_DEBUG_UART_NS16550) 98 - Define the required settings as needed (see below) 99 - Call debug_uart_init() before use 100 - Call debug_uart_putc() to output a character 101 102 Depending on your platform it may be possible to use this UART before 103 a stack is available. 104 105 If your UART does not support this interface you can probably add 106 support quite easily. Remember that you cannot use driver model and 107 it is preferred to use no stack. 108 109 You must not use this UART once driver model is working and the 110 serial drivers are up and running (done in serial_init()). Otherwise 111 the drivers may conflict and you will get strange output. 112 113choice 114 prompt "Select which UART will provide the debug UART" 115 depends on DEBUG_UART 116 default DEBUG_UART_NS16550 117 118config DEBUG_UART_ALTERA_JTAGUART 119 bool "Altera JTAG UART" 120 help 121 Select this to enable a debug UART using the altera_jtag_uart driver. 122 You will need to provide parameters to make this work. The driver will 123 be available until the real driver model serial is running. 124 125config DEBUG_UART_ALTERA_UART 126 bool "Altera UART" 127 help 128 Select this to enable a debug UART using the altera_uart driver. 129 You will need to provide parameters to make this work. The driver will 130 be available until the real driver model serial is running. 131 132config DEBUG_UART_AR933X 133 bool "QCA/Atheros ar933x" 134 depends on AR933X_UART 135 help 136 Select this to enable a debug UART using the ar933x uart driver. 137 You will need to provide parameters to make this work. The 138 driver will be available until the real driver model serial is 139 running. 140 141config DEBUG_UART_ATMEL 142 bool "Atmel USART" 143 help 144 Select this to enable a debug UART using the atmel usart driver. You 145 will need to provide parameters to make this work. The driver will 146 be available until the real driver-model serial is running. 147 148config DEBUG_UART_BCM6345 149 bool "BCM6345 UART" 150 depends on BCM6345_SERIAL 151 help 152 Select this to enable a debug UART on BCM6345 SoCs. You 153 will need to provide parameters to make this work. The driver will 154 be available until the real driver model serial is running. 155 156config DEBUG_UART_NS16550 157 bool "ns16550" 158 help 159 Select this to enable a debug UART using the ns16550 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_EFI_CONSOLE 164 bool "EFI" 165 depends on EFI_APP 166 help 167 Select this to enable a debug console which calls back to EFI to 168 output to the console. This can be useful for early debugging of 169 U-Boot when running on top of EFI (Extensive Firmware Interface). 170 This is a type of BIOS used by PCs. 171 172config DEBUG_UART_S5P 173 bool "Samsung S5P" 174 help 175 Select this to enable a debug UART using the serial_s5p driver. You 176 will need to provide parameters to make this work. The driver will 177 be available until the real driver-model serial is running. 178 179config DEBUG_UART_MESON 180 bool "Amlogic Meson" 181 depends on MESON_SERIAL 182 help 183 Select this to enable a debug UART using the serial_meson driver. You 184 will need to provide parameters to make this work. The driver will 185 be available until the real driver-model serial is running. 186 187config DEBUG_UART_UARTLITE 188 bool "Xilinx Uartlite" 189 help 190 Select this to enable a debug UART using the serial_uartlite 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_ARM_DCC 195 bool "ARM DCC" 196 help 197 Select this to enable a debug UART using the ARM JTAG DCC port. 198 The DCC port can be used for very early debugging and doesn't require 199 any additional setting like address/baudrate/clock. On systems without 200 any serial interface this is the easiest way how to get console. 201 Every ARM core has own DCC port which is the part of debug interface. 202 This port is available at least on ARMv6, ARMv7, ARMv8 and XScale 203 architectures. 204 205config DEBUG_MVEBU_A3700_UART 206 bool "Marvell Armada 3700" 207 help 208 Select this to enable a debug UART using the serial_mvebu driver. You 209 will need to provide parameters to make this work. The driver will 210 be available until the real driver-model serial is running. 211 212config DEBUG_UART_ZYNQ 213 bool "Xilinx Zynq" 214 help 215 Select this to enable a debug UART using the serial_zynq driver. You 216 will need to provide parameters to make this work. The driver will 217 be available until the real driver-model serial is running. 218 219config DEBUG_UART_APBUART 220 depends on LEON3 221 bool "Gaisler APBUART" 222 help 223 Select this to enable a debug UART using the serial_leon3 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_PL010 228 bool "pl010" 229 help 230 Select this to enable a debug UART using the pl01x driver with the 231 PL010 UART type. You will need to provide parameters to make this 232 work. The driver will be available until the real driver model 233 serial is running. 234 235config DEBUG_UART_PL011 236 bool "pl011" 237 help 238 Select this to enable a debug UART using the pl01x driver with the 239 PL011 UART type. You will need to provide parameters to make this 240 work. The driver will be available until the real driver model 241 serial is running. 242 243config DEBUG_UART_PIC32 244 bool "Microchip PIC32" 245 depends on PIC32_SERIAL 246 help 247 Select this to enable a debug UART using the serial_pic32 driver. You 248 will need to provide parameters to make this work. The driver will 249 be available until the real driver model serial is running. 250 251config DEBUG_UART_UNIPHIER 252 bool "UniPhier on-chip UART" 253 depends on ARCH_UNIPHIER 254 help 255 Select this to enable a debug UART using the UniPhier on-chip UART. 256 You will need to provide DEBUG_UART_BASE to make this work. The 257 driver will be available until the real driver-model serial is 258 running. 259 260config DEBUG_UART_OMAP 261 bool "OMAP uart" 262 help 263 Select this to enable a debug UART using the omap ns16550 driver. 264 You will need to provide parameters to make this work. The driver 265 will be available until the real driver model serial is running. 266 267endchoice 268 269config DEBUG_UART_BASE 270 hex "Base address of UART" 271 depends on DEBUG_UART 272 help 273 This is the base address of your UART for memory-mapped UARTs. 274 275 A default should be provided by your board, but if not you will need 276 to use the correct value here. 277 278config DEBUG_UART_CLOCK 279 int "UART input clock" 280 depends on DEBUG_UART 281 help 282 The UART input clock determines the speed of the internal UART 283 circuitry. The baud rate is derived from this by dividing the input 284 clock down. 285 286 A default should be provided by your board, but if not you will need 287 to use the correct value here. 288 289config DEBUG_UART_SHIFT 290 int "UART register shift" 291 depends on DEBUG_UART 292 default 0 if DEBUG_UART 293 help 294 Some UARTs (notably ns16550) support different register layouts 295 where the registers are spaced either as bytes, words or some other 296 value. Use this value to specify the shift to use, where 0=byte 297 registers, 2=32-bit word registers, etc. 298 299config DEBUG_UART_BOARD_INIT 300 bool "Enable board-specific debug UART init" 301 depends on DEBUG_UART 302 help 303 Some boards need to set things up before the debug UART can be used. 304 On these boards a call to debug_uart_init() is insufficient. When 305 this option is enabled, the function board_debug_uart_init() will 306 be called when debug_uart_init() is called. You can put any code 307 here that is needed to set up the UART ready for use, such as set 308 pin multiplexing or enable clocks. 309 310config DEBUG_UART_ANNOUNCE 311 bool "Show a message when the debug UART starts up" 312 depends on DEBUG_UART 313 help 314 Enable this option to show a message when the debug UART is ready 315 for use. You will see a message like "<debug_uart> " as soon as 316 U-Boot has the UART ready for use (i.e. your code calls 317 debug_uart_init()). This can be useful just as a check that 318 everything is working. 319 320config DEBUG_UART_SKIP_INIT 321 bool "Skip UART initialization" 322 help 323 Select this if the UART you want to use for debug output is already 324 initialized by the time U-Boot starts its execution. 325 326config ALTERA_JTAG_UART 327 bool "Altera JTAG UART support" 328 depends on DM_SERIAL 329 help 330 Select this to enable an JTAG UART for Altera devices.The JTAG UART 331 core implements a method to communicate serial character streams 332 between a host PC and a Qsys system on an Altera FPGA. Please find 333 details on the "Embedded Peripherals IP User Guide" of Altera. 334 335config ALTERA_JTAG_UART_BYPASS 336 bool "Bypass output when no connection" 337 depends on ALTERA_JTAG_UART 338 help 339 Bypass console output and keep going even if there is no JTAG 340 terminal connection with the host. The console output will resume 341 once the JTAG terminal is connected. Without the bypass, the console 342 output will wait forever until a JTAG terminal is connected. If you 343 not are sure, say Y. 344 345config ALTERA_UART 346 bool "Altera UART support" 347 depends on DM_SERIAL 348 help 349 Select this to enable an UART for Altera devices. Please find 350 details on the "Embedded Peripherals IP User Guide" of Altera. 351 352config AR933X_UART 353 bool "QCA/Atheros ar933x UART support" 354 depends on DM_SERIAL && SOC_AR933X 355 help 356 Select this to enable UART support for QCA/Atheros ar933x 357 devices. This driver uses driver model and requires a device 358 tree binding to operate, please refer to the document at 359 doc/device-tree-bindings/serial/qca,ar9330-uart.txt. 360 361config ATMEL_USART 362 bool "Atmel USART support" 363 help 364 Select this to enable USART support for Atmel SoCs. It can be 365 configured in the device tree, and input clock frequency can 366 be got from the clk node. 367 368config BCM6345_SERIAL 369 bool "Support for BCM6345 UART" 370 depends on DM_SERIAL && ARCH_BMIPS 371 help 372 Select this to enable UART on BCM6345 SoCs. 373 374config FSL_LPUART 375 bool "Freescale LPUART support" 376 help 377 Select this to enable a Low Power UART for Freescale VF610 and 378 QorIQ Layerscape devices. 379 380config MVEBU_A3700_UART 381 bool "UART support for Armada 3700" 382 default n 383 help 384 Choose this option to add support for UART driver on the Marvell 385 Armada 3700 SoC. The base address is configured via DT. 386 387config MXC_UART 388 bool "IMX serial port support" 389 depends on MX5 || MX6 390 help 391 If you have a machine based on a Motorola IMX CPU you 392 can enable its onboard serial port by enabling this option. 393 394config PIC32_SERIAL 395 bool "Support for Microchip PIC32 on-chip UART" 396 depends on DM_SERIAL && MACH_PIC32 397 default y 398 help 399 Support for the UART found on Microchip PIC32 SoC's. 400 401config SYS_NS16550 402 bool "NS16550 UART or compatible" 403 help 404 Support NS16550 UART or compatible. This can be enabled in the 405 device tree with the correct input clock frequency. If the input 406 clock frequency is not defined in the device tree, the macro 407 CONFIG_SYS_NS16550_CLK defined in a legacy board header file will 408 be used. It can be a constant or a function to get clock, eg, 409 get_serial_clock(). 410 411config INTEL_MID_SERIAL 412 bool "Intel MID platform UART support" 413 depends on DM_SERIAL && OF_CONTROL 414 depends on INTEL_MID 415 select SYS_NS16550 416 help 417 Select this to enable a UART for Intel MID platforms. 418 This uses the ns16550 driver as a library. 419 420config ROCKCHIP_SERIAL 421 bool "Rockchip on-chip UART support" 422 depends on DM_SERIAL && SPL_OF_PLATDATA 423 help 424 Select this to enable a debug UART for Rockchip devices when using 425 CONFIG_SPL_OF_PLATDATA (i.e. a compiled-in device tree replacemenmt). 426 This uses the ns16550 driver, converting the platdata from of-platdata 427 to the ns16550 format. 428 429config SANDBOX_SERIAL 430 bool "Sandbox UART support" 431 depends on SANDBOX 432 help 433 Select this to enable a seral UART for sandbox. This is required to 434 operate correctly, otherwise you will see no serial output from 435 sandbox. The emulated UART will display to the console and console 436 input will be fed into the UART. This allows you to interact with 437 U-Boot. 438 439 The operation of the console is controlled by the -t command-line 440 flag. In raw mode, U-Boot sees all characters from the terminal 441 before they are processed, including Ctrl-C. In cooked mode, Ctrl-C 442 is processed by the terminal, and terminates U-Boot. Valid options 443 are: 444 445 -t raw-with-sigs Raw mode, Ctrl-C will terminate U-Boot 446 -t raw Raw mode, Ctrl-C is processed by U-Boot 447 -t cooked Cooked mode, Ctrl-C terminates 448 449config UNIPHIER_SERIAL 450 bool "Support for UniPhier on-chip UART" 451 depends on ARCH_UNIPHIER 452 default y 453 help 454 If you have a UniPhier based board and want to use the on-chip 455 serial ports, say Y to this option. If unsure, say N. 456 457config XILINX_UARTLITE 458 bool "Xilinx Uarlite support" 459 depends on DM_SERIAL && (MICROBLAZE || ARCH_ZYNQ || ARCH_ZYNQMP || 4xx) 460 help 461 If you have a Xilinx based board and want to use the uartlite 462 serial ports, say Y to this option. If unsure, say N. 463 464config MESON_SERIAL 465 bool "Support for Amlogic Meson UART" 466 depends on DM_SERIAL && ARCH_MESON 467 help 468 If you have an Amlogic Meson based board and want to use the on-chip 469 serial ports, say Y to this option. If unsure, say N. 470 471config MSM_SERIAL 472 bool "Qualcomm on-chip UART" 473 depends on DM_SERIAL 474 help 475 Support Data Mover UART used on Qualcomm Snapdragon SoCs. 476 It should support all Qualcomm devices with UARTDM version 1.4, 477 for example APQ8016 and MSM8916. 478 Single baudrate is supported in current implementation (115200). 479 480config PXA_SERIAL 481 bool "PXA serial port support" 482 help 483 If you have a machine based on a Marvell XScale PXA2xx CPU you 484 can enable its onboard serial ports by enabling this option. 485 486config STI_ASC_SERIAL 487 bool "STMicroelectronics on-chip UART" 488 depends on DM_SERIAL && ARCH_STI 489 help 490 Select this to enable Asynchronous Serial Controller available 491 on STiH410 SoC. This is a basic implementation, it supports 492 following baudrate 9600, 19200, 38400, 57600 and 115200. 493 494config MPC8XX_CONS 495 bool "Console driver for MPC8XX" 496 depends on 8xx 497 default y 498 499choice 500 prompt "Console port" 501 default 8xx_CONS_SMC1 502 depends on MPC8XX_CONS 503 help 504 Depending on board, select one serial port 505 (CONFIG_8xx_CONS_SMC1 or CONFIG_8xx_CONS_SMC2) 506 507config 8xx_CONS_SMC1 508 bool "SMC1" 509 510config 8xx_CONS_SMC2 511 bool "SMC2" 512 513endchoice 514 515config SYS_SMC_RXBUFLEN 516 int "Console Rx buffer length" 517 depends on MPC8XX_CONS 518 default 1 519 help 520 With CONFIG_SYS_SMC_RXBUFLEN it is possible to define 521 the maximum receive buffer length for the SMC. 522 This option is actual only for 8xx possible. 523 If using CONFIG_SYS_SMC_RXBUFLEN also CONFIG_SYS_MAXIDLE 524 must be defined, to setup the maximum idle timeout for 525 the SMC. 526 527config SYS_MAXIDLE 528 int "maximum idle timeout" 529 depends on MPC8XX_CONS 530 default 0 531 532config SYS_BRGCLK_PRESCALE 533 int "BRG Clock Prescale" 534 depends on MPC8XX_CONS 535 default 1 536 537config SYS_SDSR 538 hex "SDSR Value" 539 depends on MPC8XX_CONS 540 default 0x83 541 542config SYS_SDMR 543 hex "SDMR Value" 544 depends on MPC8XX_CONS 545 default 0 546 547endmenu 548