serial: mxc: Add debug uart support
[people/ms/u-boot.git] / drivers / serial / Kconfig
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1#
2# Serial device configuration
3#
4
5menu "Serial drivers"
6
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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
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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
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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
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47config CONS_INDEX
48 int "UART used for console"
49 depends on ARCH_SUNXI
50 default 2 if MACH_SUN5I
e8f86a02 51 default 5 if MACH_SUN8I_A23 || MACH_SUN8I_A33
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52 default 1
53 help
54 Configures the console index.
e8f86a02 55 For Allwinner SoC., default values are 2 for SUN5I and 5 for A23/A33.
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56 Otherwise, the index equals 1.
57
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58config DM_SERIAL
59 bool "Enable Driver Model for serial drivers"
60 depends on DM
61 help
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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.
ff247b7a 66
891f7ae6 67config SPL_DM_SERIAL
0424990c 68 bool "Enable Driver Model for serial drivers in SPL"
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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
0424990c 78 bool "Enable Driver Model for serial drivers in TPL"
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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
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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
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113choice
114 prompt "Select which UART will provide the debug UART"
115 depends on DEBUG_UART
b1e361b6 116 default DEBUG_UART_NS16550
21d00436 117
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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212config DEBUG_UART_ZYNQ
213 bool "Xilinx Zynq"
214 help
6bf87dac 215 Select this to enable a debug UART using the serial_zynq driver. You
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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
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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
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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
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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
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251config DEBUG_UART_MXC
252 bool "IMX Serial port"
253 depends on MXC_UART
254 help
255 Select this to enable a debug UART using the serial_mxc driver. You
256 will need to provide parameters to make this work. The driver will
257 be available until the real driver model serial is running.
258
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259config DEBUG_UART_UNIPHIER
260 bool "UniPhier on-chip UART"
261 depends on ARCH_UNIPHIER
262 help
263 Select this to enable a debug UART using the UniPhier on-chip UART.
264 You will need to provide DEBUG_UART_BASE to make this work. The
265 driver will be available until the real driver-model serial is
266 running.
267
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268config DEBUG_UART_OMAP
269 bool "OMAP uart"
270 help
271 Select this to enable a debug UART using the omap ns16550 driver.
272 You will need to provide parameters to make this work. The driver
273 will be available until the real driver model serial is running.
274
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275endchoice
276
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277config DEBUG_UART_BASE
278 hex "Base address of UART"
279 depends on DEBUG_UART
280 help
281 This is the base address of your UART for memory-mapped UARTs.
282
283 A default should be provided by your board, but if not you will need
284 to use the correct value here.
285
286config DEBUG_UART_CLOCK
287 int "UART input clock"
288 depends on DEBUG_UART
289 help
290 The UART input clock determines the speed of the internal UART
291 circuitry. The baud rate is derived from this by dividing the input
292 clock down.
293
294 A default should be provided by your board, but if not you will need
295 to use the correct value here.
296
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297config DEBUG_UART_SHIFT
298 int "UART register shift"
299 depends on DEBUG_UART
300 default 0 if DEBUG_UART
301 help
302 Some UARTs (notably ns16550) support different register layouts
303 where the registers are spaced either as bytes, words or some other
304 value. Use this value to specify the shift to use, where 0=byte
305 registers, 2=32-bit word registers, etc.
306
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307config DEBUG_UART_BOARD_INIT
308 bool "Enable board-specific debug UART init"
309 depends on DEBUG_UART
310 help
311 Some boards need to set things up before the debug UART can be used.
312 On these boards a call to debug_uart_init() is insufficient. When
313 this option is enabled, the function board_debug_uart_init() will
314 be called when debug_uart_init() is called. You can put any code
315 here that is needed to set up the UART ready for use, such as set
316 pin multiplexing or enable clocks.
317
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318config DEBUG_UART_ANNOUNCE
319 bool "Show a message when the debug UART starts up"
320 depends on DEBUG_UART
321 help
322 Enable this option to show a message when the debug UART is ready
323 for use. You will see a message like "<debug_uart> " as soon as
324 U-Boot has the UART ready for use (i.e. your code calls
325 debug_uart_init()). This can be useful just as a check that
326 everything is working.
327
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328config DEBUG_UART_SKIP_INIT
329 bool "Skip UART initialization"
330 help
331 Select this if the UART you want to use for debug output is already
332 initialized by the time U-Boot starts its execution.
333
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334config ALTERA_JTAG_UART
335 bool "Altera JTAG UART support"
336 depends on DM_SERIAL
337 help
338 Select this to enable an JTAG UART for Altera devices.The JTAG UART
339 core implements a method to communicate serial character streams
340 between a host PC and a Qsys system on an Altera FPGA. Please find
341 details on the "Embedded Peripherals IP User Guide" of Altera.
342
343config ALTERA_JTAG_UART_BYPASS
344 bool "Bypass output when no connection"
345 depends on ALTERA_JTAG_UART
346 help
347 Bypass console output and keep going even if there is no JTAG
348 terminal connection with the host. The console output will resume
349 once the JTAG terminal is connected. Without the bypass, the console
350 output will wait forever until a JTAG terminal is connected. If you
351 not are sure, say Y.
352
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353config ALTERA_UART
354 bool "Altera UART support"
355 depends on DM_SERIAL
356 help
357 Select this to enable an UART for Altera devices. Please find
358 details on the "Embedded Peripherals IP User Guide" of Altera.
359
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360config AR933X_UART
361 bool "QCA/Atheros ar933x UART support"
362 depends on DM_SERIAL && SOC_AR933X
363 help
364 Select this to enable UART support for QCA/Atheros ar933x
365 devices. This driver uses driver model and requires a device
366 tree binding to operate, please refer to the document at
367 doc/device-tree-bindings/serial/qca,ar9330-uart.txt.
368
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369config ATMEL_USART
370 bool "Atmel USART support"
371 help
372 Select this to enable USART support for Atmel SoCs. It can be
373 configured in the device tree, and input clock frequency can
374 be got from the clk node.
375
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376config BCM6345_SERIAL
377 bool "Support for BCM6345 UART"
378 depends on DM_SERIAL && ARCH_BMIPS
379 help
380 Select this to enable UART on BCM6345 SoCs.
381
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382config FSL_LPUART
383 bool "Freescale LPUART support"
384 help
385 Select this to enable a Low Power UART for Freescale VF610 and
386 QorIQ Layerscape devices.
387
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388config MVEBU_A3700_UART
389 bool "UART support for Armada 3700"
390 default n
391 help
392 Choose this option to add support for UART driver on the Marvell
393 Armada 3700 SoC. The base address is configured via DT.
394
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395config MXC_UART
396 bool "IMX serial port support"
98d62e61 397 depends on MX5 || MX6
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398 help
399 If you have a machine based on a Motorola IMX CPU you
400 can enable its onboard serial port by enabling this option.
401
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402config PIC32_SERIAL
403 bool "Support for Microchip PIC32 on-chip UART"
404 depends on DM_SERIAL && MACH_PIC32
405 default y
406 help
407 Support for the UART found on Microchip PIC32 SoC's.
408
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409config SYS_NS16550
410 bool "NS16550 UART or compatible"
411 help
412 Support NS16550 UART or compatible. This can be enabled in the
413 device tree with the correct input clock frequency. If the input
414 clock frequency is not defined in the device tree, the macro
415 CONFIG_SYS_NS16550_CLK defined in a legacy board header file will
416 be used. It can be a constant or a function to get clock, eg,
417 get_serial_clock().
418
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419config INTEL_MID_SERIAL
420 bool "Intel MID platform UART support"
421 depends on DM_SERIAL && OF_CONTROL
422 depends on INTEL_MID
423 select SYS_NS16550
424 help
425 Select this to enable a UART for Intel MID platforms.
426 This uses the ns16550 driver as a library.
427
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428config ROCKCHIP_SERIAL
429 bool "Rockchip on-chip UART support"
430 depends on DM_SERIAL && SPL_OF_PLATDATA
431 help
432 Select this to enable a debug UART for Rockchip devices when using
7f73ca48 433 CONFIG_SPL_OF_PLATDATA (i.e. a compiled-in device tree replacemenmt).
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434 This uses the ns16550 driver, converting the platdata from of-platdata
435 to the ns16550 format.
436
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437config SANDBOX_SERIAL
438 bool "Sandbox UART support"
2ea65f3e 439 depends on SANDBOX
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440 help
441 Select this to enable a seral UART for sandbox. This is required to
442 operate correctly, otherwise you will see no serial output from
443 sandbox. The emulated UART will display to the console and console
444 input will be fed into the UART. This allows you to interact with
445 U-Boot.
446
447 The operation of the console is controlled by the -t command-line
448 flag. In raw mode, U-Boot sees all characters from the terminal
449 before they are processed, including Ctrl-C. In cooked mode, Ctrl-C
450 is processed by the terminal, and terminates U-Boot. Valid options
451 are:
452
453 -t raw-with-sigs Raw mode, Ctrl-C will terminate U-Boot
454 -t raw Raw mode, Ctrl-C is processed by U-Boot
455 -t cooked Cooked mode, Ctrl-C terminates
456
ff247b7a 457config UNIPHIER_SERIAL
b6ef3a3f 458 bool "Support for UniPhier on-chip UART"
2ea65f3e 459 depends on ARCH_UNIPHIER
85dc2fe1 460 default y
ff247b7a 461 help
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462 If you have a UniPhier based board and want to use the on-chip
463 serial ports, say Y to this option. If unsure, say N.
dcfe4a54 464
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465config XILINX_UARTLITE
466 bool "Xilinx Uarlite support"
80cce262 467 depends on DM_SERIAL && (MICROBLAZE || ARCH_ZYNQ || ARCH_ZYNQMP || 4xx)
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468 help
469 If you have a Xilinx based board and want to use the uartlite
470 serial ports, say Y to this option. If unsure, say N.
471
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472config MESON_SERIAL
473 bool "Support for Amlogic Meson UART"
474 depends on DM_SERIAL && ARCH_MESON
475 help
476 If you have an Amlogic Meson based board and want to use the on-chip
477 serial ports, say Y to this option. If unsure, say N.
478
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479config MSM_SERIAL
480 bool "Qualcomm on-chip UART"
481 depends on DM_SERIAL
482 help
483 Support Data Mover UART used on Qualcomm Snapdragon SoCs.
484 It should support all Qualcomm devices with UARTDM version 1.4,
485 for example APQ8016 and MSM8916.
486 Single baudrate is supported in current implementation (115200).
6985d496 487
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488config PXA_SERIAL
489 bool "PXA serial port support"
490 help
491 If you have a machine based on a Marvell XScale PXA2xx CPU you
492 can enable its onboard serial ports by enabling this option.
493
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494config STI_ASC_SERIAL
495 bool "STMicroelectronics on-chip UART"
496 depends on DM_SERIAL && ARCH_STI
497 help
498 Select this to enable Asynchronous Serial Controller available
499 on STiH410 SoC. This is a basic implementation, it supports
500 following baudrate 9600, 19200, 38400, 57600 and 115200.
501
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502config MPC8XX_CONS
503 bool "Console driver for MPC8XX"
504 depends on 8xx
505 default y
506
507choice
508 prompt "Console port"
509 default 8xx_CONS_SMC1
510 depends on MPC8XX_CONS
511 help
512 Depending on board, select one serial port
513 (CONFIG_8xx_CONS_SMC1 or CONFIG_8xx_CONS_SMC2)
514
515config 8xx_CONS_SMC1
516 bool "SMC1"
517
518config 8xx_CONS_SMC2
519 bool "SMC2"
520
521endchoice
522
523config SYS_SMC_RXBUFLEN
524 int "Console Rx buffer length"
525 depends on MPC8XX_CONS
526 default 1
527 help
528 With CONFIG_SYS_SMC_RXBUFLEN it is possible to define
529 the maximum receive buffer length for the SMC.
530 This option is actual only for 8xx possible.
531 If using CONFIG_SYS_SMC_RXBUFLEN also CONFIG_SYS_MAXIDLE
532 must be defined, to setup the maximum idle timeout for
533 the SMC.
534
535config SYS_MAXIDLE
536 int "maximum idle timeout"
537 depends on MPC8XX_CONS
538 default 0
539
540config SYS_BRGCLK_PRESCALE
541 int "BRG Clock Prescale"
542 depends on MPC8XX_CONS
543 default 1
544
545config SYS_SDSR
546 hex "SDSR Value"
547 depends on MPC8XX_CONS
548 default 0x83
549
550config SYS_SDMR
551 hex "SDMR Value"
552 depends on MPC8XX_CONS
553 default 0
554
0b11dbf7 555endmenu