net: dwc_eth_qos: Remove obsolete imx8 includes
[J-u-boot.git] / drivers / serial / Kconfig
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1#
2# Serial device configuration
3#
4
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5menuconfig SERIAL
6 bool "Serial"
7 default y
8 help
9 Enable support for serial drivers. This allows use of a serial UART
10 for displaying messages while U-Boot is running. It also brings in
11 printf() and panic() functions. This should normally be enabled
12 unless there are space reasons not to. If you just need to disable
13 the console you can adjust the stdout environment variable or use
14 SILENT_CONSOLE.
15
16if SERIAL
0b11dbf7 17
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18config BAUDRATE
19 int "Default baudrate"
20 default 115200
21 help
22 Select a default baudrate, where "default" has a driver-specific
23 meaning of either setting the baudrate for the early debug UART
24 in the SPL stage (most drivers) or for choosing a default baudrate
25 in the absence of an environment setting (serial_mxc.c).
26
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27config OF_SERIAL_BAUD
28 bool "Fetch serial baudrate from device tree"
29 depends on DM_SERIAL && SPL_ENV_SUPPORT
30 select DEFAULT_ENV_IS_RW
31 help
32 Select this to enable fetching and setting of the baudrate
33 configured in the DT. Replace the default baudrate with the DT
34 baudrate and also set it to the environment.
35
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36config DEFAULT_ENV_IS_RW
37 bool "Make default environment as writable"
38 help
39 Select this to enable to make default environment writable. This
40 allows modifying the default environment.
41
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42config REQUIRE_SERIAL_CONSOLE
43 bool "Require a serial port for console"
44 # Running without a serial console is not supported by the
45 # non-dm serial code
46 depends on DM_SERIAL
47 default y
48 help
49 Require a serial port for the console, and panic if none is found
50 during serial port initialization (default y). Set this to n on
51 boards which have no debug serial port whatsoever.
52
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53config SPECIFY_CONSOLE_INDEX
54 bool "Specify the port number used for console"
55 default y if !DM_SERIAL || (SPL && !SPL_DM_SERIAL) || \
56 (TPL && !TPL_DM_SERIAL)
57 help
58 In various cases, we need to specify which of the UART devices that
59 a board or SoC has available are to be used for the console device
60 in U-Boot.
61
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62config SERIAL_PRESENT
63 bool "Provide a serial driver"
64 depends on DM_SERIAL
65 default y
66 help
67 In very space-constrained devices even the full UART driver is too
68 large. In this case the debug UART can still be used in some cases.
69 This option enables the full UART in U-Boot, so if is it disabled,
70 the full UART driver will be omitted, thus saving space.
71
72config SPL_SERIAL_PRESENT
73 bool "Provide a serial driver in SPL"
a074667d 74 depends on DM_SERIAL && SPL
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75 default y
76 help
77 In very space-constrained devices even the full UART driver is too
78 large. In this case the debug UART can still be used in some cases.
79 This option enables the full UART in SPL, so if is it disabled,
80 the full UART driver will be omitted, thus saving space.
81
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82config TPL_SERIAL_PRESENT
83 bool "Provide a serial driver in TPL"
a074667d 84 depends on DM_SERIAL && TPL
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85 default y
86 help
87 In very space-constrained devices even the full UART driver is too
88 large. In this case the debug UART can still be used in some cases.
89 This option enables the full UART in TPL, so if is it disabled,
90 the full UART driver will be omitted, thus saving space.
91
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92config VPL_SERIAL_PRESENT
93 bool "Provide a serial driver in VPL"
94 depends on DM_SERIAL && VPL
95 default y
96 help
97 In very space-constrained devices even the full UART driver is too
98 large. In this case the debug UART can still be used in some cases.
99 This option enables the full UART in TPL, so if is it disabled,
100 the full UART driver will be omitted, thus saving space.
101
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102config CONS_INDEX
103 int "UART used for console"
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104 depends on SPECIFY_CONSOLE_INDEX
105 range 0 6
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106 default 1
107 help
6f6b7cfa 108 Set this to match the UART number of the serial console.
7095f864 109
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110config DM_SERIAL
111 bool "Enable Driver Model for serial drivers"
112 depends on DM
327bb3bc 113 select SYS_MALLOC_F
da333ae7 114 help
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115 Enable driver model for serial. This replaces
116 drivers/serial/serial.c with the serial uclass, which
117 implements serial_putc() etc. The uclass interface is
118 defined in include/serial.h.
ff247b7a 119
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120config SERIAL_RX_BUFFER
121 bool "Enable RX buffer for serial input"
122 depends on DM_SERIAL
123 help
124 Enable RX buffer support for the serial driver. This enables
125 pasting longer strings, even when the RX FIFO of the UART is
126 not big enough (e.g. 16 bytes on the normal NS16550).
127
128config SERIAL_RX_BUFFER_SIZE
129 int "RX buffer size"
130 depends on SERIAL_RX_BUFFER
131 default 256
132 help
133 The size of the RX buffer (needs to be power of 2)
134
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135config SERIAL_PUTS
136 bool "Enable printing strings all at once"
137 depends on DM_SERIAL
138 help
139 Some serial drivers are much more efficient when printing multiple
140 characters at once rather than printing characters individually. This
141 can be because they can load a fifo, or because individual print
142 calls have a constant overhead. With this option set, the serial
143 subsystem will try to provide serial drivers with as many characters
144 at once as possible, instead of printing characters one by one. Most
145 serial drivers do not need this config to print efficiently. If
146 unsure, say N.
147
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148config SERIAL_SEARCH_ALL
149 bool "Search for serial devices after default one failed"
150 depends on DM_SERIAL
151 help
152 The serial subsystem only searches for a single serial device
153 that was instantiated, but does not check whether it was probed
154 correctly. With this option set, we make successful probing
155 mandatory and search for fallback serial devices if the default
156 device does not work.
157
158 If unsure, say N.
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159
160config SERIAL_PROBE_ALL
161 bool "Probe all available serial devices"
162 depends on DM_SERIAL
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163 help
164 The serial subsystem only probes for a single serial device,
165 but does not probe for other remaining serial devices.
166 With this option set, we make probing and searching for
167 all available devices optional.
168 Normally, U-Boot talks to one serial port at a time, but SBSA
169 compliant UART devices like PL011 require initialization
170 by firmware and to let the kernel use serial port for sending
171 and receiving the characters.
172
173 If unsure, say N.
ae5326a6 174
891f7ae6 175config SPL_DM_SERIAL
0424990c 176 bool "Enable Driver Model for serial drivers in SPL"
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177 depends on DM_SERIAL && SPL_DM
178 default y
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179 help
180 Enable driver model for serial in SPL. This replaces
181 drivers/serial/serial.c with the serial uclass, which
182 implements serial_putc() etc. The uclass interface is
183 defined in include/serial.h.
184
185config TPL_DM_SERIAL
0424990c 186 bool "Enable Driver Model for serial drivers in TPL"
6920f00c 187 depends on DM_SERIAL && TPL_DM
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188 default y if TPL && DM_SERIAL
189 help
190 Enable driver model for serial in TPL. This replaces
191 drivers/serial/serial.c with the serial uclass, which
192 implements serial_putc() etc. The uclass interface is
193 defined in include/serial.h.
194
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195config VPL_DM_SERIAL
196 bool "Enable Driver Model for serial drivers in VPL"
197 depends on DM_SERIAL
198 default y if VPL && DM_SERIAL
199 help
200 Enable driver model for serial in VPL. This replaces
201 drivers/serial/serial.c with the serial uclass, which
202 implements serial_putc() etc. The uclass interface is
203 defined in include/serial.h.
204
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205config DEBUG_UART
206 bool "Enable an early debug UART for debugging"
207 help
208 The debug UART is intended for use very early in U-Boot to debug
209 problems when an ICE or other debug mechanism is not available.
210
211 To use it you should:
212 - Make sure your UART supports this interface
213 - Enable CONFIG_DEBUG_UART
214 - Enable the CONFIG for your UART to tell it to provide this interface
215 (e.g. CONFIG_DEBUG_UART_NS16550)
216 - Define the required settings as needed (see below)
217 - Call debug_uart_init() before use
218 - Call debug_uart_putc() to output a character
219
220 Depending on your platform it may be possible to use this UART before
221 a stack is available.
222
223 If your UART does not support this interface you can probably add
224 support quite easily. Remember that you cannot use driver model and
225 it is preferred to use no stack.
226
227 You must not use this UART once driver model is working and the
228 serial drivers are up and running (done in serial_init()). Otherwise
229 the drivers may conflict and you will get strange output.
230
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231choice
232 prompt "Select which UART will provide the debug UART"
233 depends on DEBUG_UART
dfe08374 234 default DEBUG_SBI_CONSOLE if RISCV_SMODE
b1e361b6 235 default DEBUG_UART_NS16550
21d00436 236
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237config DEBUG_UART_ALTERA_JTAGUART
238 bool "Altera JTAG UART"
4cc24aea 239 depends on ALTERA_JTAG_UART
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240 help
241 Select this to enable a debug UART using the altera_jtag_uart driver.
242 You will need to provide parameters to make this work. The driver will
243 be available until the real driver model serial is running.
244
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245config DEBUG_UART_ALTERA_UART
246 bool "Altera UART"
4cc24aea 247 depends on ALTERA_UART
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248 help
249 Select this to enable a debug UART using the altera_uart driver.
250 You will need to provide parameters to make this work. The driver will
251 be available until the real driver model serial is running.
252
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253config DEBUG_UART_AR933X
254 bool "QCA/Atheros ar933x"
255 depends on AR933X_UART
256 help
257 Select this to enable a debug UART using the ar933x uart driver.
258 You will need to provide parameters to make this work. The
259 driver will be available until the real driver model serial is
260 running.
261
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262config DEBUG_ARC_SERIAL
263 bool "ARC UART"
264 depends on ARC_SERIAL
265 help
266 Select this to enable a debug UART using the ARC UART driver.
267 You will need to provide parameters to make this work. The
268 driver will be available until the real driver model serial is
269 running.
270
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271config DEBUG_UART_ATMEL
272 bool "Atmel USART"
4cc24aea 273 depends on ATMEL_USART
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274 help
275 Select this to enable a debug UART using the atmel usart driver. You
276 will need to provide parameters to make this work. The driver will
277 be available until the real driver-model serial is running.
278
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279config DEBUG_UART_BCM6345
280 bool "BCM6345 UART"
281 depends on BCM6345_SERIAL
282 help
283 Select this to enable a debug UART on BCM6345 SoCs. You
284 will need to provide parameters to make this work. The driver will
285 be available until the real driver model serial is running.
286
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287config DEBUG_UART_NS16550
288 bool "ns16550"
4cc24aea 289 depends on SYS_NS16550
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290 help
291 Select this to enable a debug UART using the ns16550 driver. You
292 will need to provide parameters to make this work. The driver will
293 be available until the real driver model serial is running.
294
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295config DEBUG_EFI_CONSOLE
296 bool "EFI"
297 depends on EFI_APP
298 help
299 Select this to enable a debug console which calls back to EFI to
300 output to the console. This can be useful for early debugging of
301 U-Boot when running on top of EFI (Extensive Firmware Interface).
302 This is a type of BIOS used by PCs.
303
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304config DEBUG_SBI_CONSOLE
305 bool "SBI"
dfe08374 306 depends on RISCV_SMODE
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307 help
308 Select this to enable a debug console which calls back to SBI to
309 output to the console. This can be useful for early debugging of
310 U-Boot when running on top of SBI (Supervisor Binary Interface).
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311 This implementation of the debug UART is not available while in
312 M-mode (e.g. during SPL).
41f7be73 313
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314config DEBUG_UART_S5P
315 bool "Samsung S5P"
d520e1fb 316 depends on ARCH_APPLE || ARCH_EXYNOS || ARCH_S5PC1XX
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317 help
318 Select this to enable a debug UART using the serial_s5p driver. You
319 will need to provide parameters to make this work. The driver will
320 be available until the real driver-model serial is running.
321
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322config DEBUG_UART_MSM
323 bool "Qualcomm QUP UART debug"
6b163a63 324 depends on ARCH_SNAPDRAGON || ARCH_IPQ40XX
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325 help
326 Select this to enable a debug UART using the serial_msm driver. You
327 will need to provide parameters to make this work. The driver will
328 be available until the real driver-model serial is running.
329
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330config DEBUG_UART_MSM_GENI
331 bool "Qualcomm snapdragon"
332 depends on ARCH_SNAPDRAGON
333 help
334 Select this to enable a debug UART using the serial_msm driver. You
335 will need to provide parameters to make this work. The driver will
336 be available until the real driver-model serial is running.
337
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338config DEBUG_UART_MESON
339 bool "Amlogic Meson"
340 depends on MESON_SERIAL
341 help
342 Select this to enable a debug UART using the serial_meson driver. You
343 will need to provide parameters to make this work. The driver will
344 be available until the real driver-model serial is running.
345
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346config DEBUG_UART_UARTLITE
347 bool "Xilinx Uartlite"
4cc24aea 348 depends on XILINX_UARTLITE
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349 help
350 Select this to enable a debug UART using the serial_uartlite driver.
351 You will need to provide parameters to make this work. The driver will
352 be available until the real driver-model serial is running.
353
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354config DEBUG_UART_ARM_DCC
355 bool "ARM DCC"
4cc24aea 356 depends on ARM_DCC
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357 help
358 Select this to enable a debug UART using the ARM JTAG DCC port.
359 The DCC port can be used for very early debugging and doesn't require
360 any additional setting like address/baudrate/clock. On systems without
361 any serial interface this is the easiest way how to get console.
362 Every ARM core has own DCC port which is the part of debug interface.
363 This port is available at least on ARMv6, ARMv7, ARMv8 and XScale
364 architectures.
365
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366config DEBUG_MVEBU_A3700_UART
367 bool "Marvell Armada 3700"
4cc24aea 368 depends on MVEBU_A3700_UART
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369 help
370 Select this to enable a debug UART using the serial_mvebu driver. You
371 will need to provide parameters to make this work. The driver will
372 be available until the real driver-model serial is running.
373
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374config DEBUG_UART_ZYNQ
375 bool "Xilinx Zynq"
4cc24aea 376 depends on ZYNQ_SERIAL
c54c0a4c 377 help
6bf87dac 378 Select this to enable a debug UART using the serial_zynq driver. You
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379 will need to provide parameters to make this work. The driver will
380 be available until the real driver-model serial is running.
381
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382config DEBUG_UART_APBUART
383 depends on LEON3
384 bool "Gaisler APBUART"
385 help
386 Select this to enable a debug UART using the serial_leon3 driver. You
387 will need to provide parameters to make this work. The driver will
388 be available until the real driver model serial is running.
389
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390config DEBUG_UART_PL010
391 bool "pl010"
bc08dc56 392 depends on PL01X_SERIAL
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393 help
394 Select this to enable a debug UART using the pl01x driver with the
395 PL010 UART type. You will need to provide parameters to make this
396 work. The driver will be available until the real driver model
397 serial is running.
398
399config DEBUG_UART_PL011
400 bool "pl011"
5e9d2833 401 depends on PL01X_SERIAL || PL011_SERIAL
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402 help
403 Select this to enable a debug UART using the pl01x driver with the
404 PL011 UART type. You will need to provide parameters to make this
405 work. The driver will be available until the real driver model
406 serial is running.
407
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408config DEBUG_UART_PIC32
409 bool "Microchip PIC32"
410 depends on PIC32_SERIAL
411 help
412 Select this to enable a debug UART using the serial_pic32 driver. You
413 will need to provide parameters to make this work. The driver will
414 be available until the real driver model serial is running.
415
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416config DEBUG_UART_MXC
417 bool "IMX Serial port"
418 depends on MXC_UART
419 help
420 Select this to enable a debug UART using the serial_mxc driver. You
421 will need to provide parameters to make this work. The driver will
422 be available until the real driver model serial is running.
423
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424config DEBUG_UART_SANDBOX
425 bool "sandbox"
426 depends on SANDBOX_SERIAL
427 help
428 Select this to enable the debug UART using the sandbox driver. This
429 provides basic serial output from the console without needing to
430 start up driver model. The driver will be available until the real
431 driver model serial is running.
432
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433config DEBUG_UART_SEMIHOSTING
434 bool "semihosting"
435 depends on SEMIHOSTING_SERIAL
436 help
437 Select this to enable the debug UART using the semihosting driver.
438 This provides basic serial output from the console without needing to
439 start up driver model. The driver will be available until the real
440 driver model serial is running.
441
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442config DEBUG_UART_SCIF
443 bool "Renesas SCIF UART"
f9aabd45 444 depends on SH || ARCH_RENESAS
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445 help
446 Select this to enable a debug UART using the serial_sh driver. You
447 will need to provide parameters to make this work. The driver will
448 be available until the real driver-model serial is running.
449
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450config DEBUG_UART_SIFIVE
451 bool "SiFive UART"
27b4a4ab 452 depends on SIFIVE_SERIAL
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453 help
454 Select this to enable a debug UART using the serial_sifive driver. You
455 will need to provide parameters to make this work. The driver will
456 be available until the real driver-model serial is running.
457
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458config DEBUG_UART_STM32
459 bool "STMicroelectronics STM32"
460 depends on STM32_SERIAL
461 help
462 Select this to enable a debug UART using the serial_stm32 driver
463 You will need to provide parameters to make this work.
464 The driver will be available until the real driver model
465 serial is running.
466
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467config DEBUG_UART_UNIPHIER
468 bool "UniPhier on-chip UART"
469 depends on ARCH_UNIPHIER
470 help
471 Select this to enable a debug UART using the UniPhier on-chip UART.
472 You will need to provide DEBUG_UART_BASE to make this work. The
473 driver will be available until the real driver-model serial is
474 running.
475
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476config DEBUG_UART_OMAP
477 bool "OMAP uart"
4cc24aea 478 depends on OMAP_SERIAL
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479 help
480 Select this to enable a debug UART using the omap ns16550 driver.
481 You will need to provide parameters to make this work. The driver
482 will be available until the real driver model serial is running.
483
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484config DEBUG_UART_MTK
485 bool "MediaTek High-speed UART"
486 depends on MTK_SERIAL
487 help
488 Select this to enable a debug UART using the MediaTek High-speed
489 UART driver.
490 You will need to provide parameters to make this work. The
491 driver will be available until the real driver model serial is
492 running.
493
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494config DEBUG_UART_MT7620
495 bool "UART driver for MediaTek MT7620 and earlier SoCs"
496 depends on MT7620_SERIAL
497 help
498 Select this to enable a debug UART using the UART driver for
499 MediaTek MT7620 and earlier SoCs.
500 You will need to provide parameters to make this work. The
501 driver will be available until the real driver model serial is
502 running.
503
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504config DEBUG_UART_XTENSA_SEMIHOSTING
505 bool "Xtensa semihosting"
506 depends on XTENSA_SEMIHOSTING_SERIAL
507 help
508 Select this to enable the debug UART using the Xtensa semihosting driver.
509 This provides basic serial output from the console without needing to
510 start up driver model. The driver will be available until the real
511 driver model serial is running.
512
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513endchoice
514
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515config DEBUG_UART_BASE
516 hex "Base address of UART"
467591b8 517 depends on DEBUG_UART
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518 default 0x0 if DEBUG_SBI_CONSOLE
519 default 0x0 if DEBUG_UART_SANDBOX
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520 default 0xff000000 if DEBUG_UART_ZYNQ && ARCH_ZYNQMP
521 default 0xe0000000 if DEBUG_UART_ZYNQ && ARCH_ZYNQ
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522 help
523 This is the base address of your UART for memory-mapped UARTs.
524
525 A default should be provided by your board, but if not you will need
526 to use the correct value here.
527
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528config SPL_DEBUG_UART_BASE
529 hex "Base address of UART for SPL"
530 depends on SPL && DEBUG_UART
531 default DEBUG_UART_BASE
532 help
533 This is the base address of your UART for memory-mapped UARTs for SPL.
534
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535config TPL_DEBUG_UART_BASE
536 hex "Base address of UART for TPL"
537 depends on TPL && DEBUG_UART
538 default DEBUG_UART_BASE
539 help
540 This is the base address of your UART for memory-mapped UARTs for TPL.
541
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542config VPL_DEBUG_UART_BASE
543 hex "Base address of UART for VPL"
544 depends on VPL && DEBUG_UART
545 default DEBUG_UART_BASE
546 help
547 This is the base address of your UART for memory-mapped UARTs for VPL.
548
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549config DEBUG_UART_CLOCK
550 int "UART input clock"
467591b8 551 depends on DEBUG_UART
41f7be73 552 default 0 if DEBUG_SBI_CONSOLE
ee441764 553 default 0 if DEBUG_UART_SANDBOX
4a8ad584 554 default 0 if DEBUG_MVEBU_A3700_UART
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555 default 100000000 if DEBUG_UART_ZYNQ && ARCH_ZYNQMP
556 default 50000000 if DEBUG_UART_ZYNQ && ARCH_ZYNQ
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557 help
558 The UART input clock determines the speed of the internal UART
559 circuitry. The baud rate is derived from this by dividing the input
560 clock down.
561
562 A default should be provided by your board, but if not you will need
563 to use the correct value here.
564
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565config DEBUG_UART_SHIFT
566 int "UART register shift"
467591b8 567 depends on DEBUG_UART
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568 default 0 if DEBUG_UART
569 help
570 Some UARTs (notably ns16550) support different register layouts
571 where the registers are spaced either as bytes, words or some other
572 value. Use this value to specify the shift to use, where 0=byte
573 registers, 2=32-bit word registers, etc.
574
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575config DEBUG_UART_BOARD_INIT
576 bool "Enable board-specific debug UART init"
577 depends on DEBUG_UART
578 help
579 Some boards need to set things up before the debug UART can be used.
580 On these boards a call to debug_uart_init() is insufficient. When
581 this option is enabled, the function board_debug_uart_init() will
582 be called when debug_uart_init() is called. You can put any code
583 here that is needed to set up the UART ready for use, such as set
584 pin multiplexing or enable clocks.
585
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586config DEBUG_UART_ANNOUNCE
587 bool "Show a message when the debug UART starts up"
588 depends on DEBUG_UART
589 help
590 Enable this option to show a message when the debug UART is ready
591 for use. You will see a message like "<debug_uart> " as soon as
592 U-Boot has the UART ready for use (i.e. your code calls
593 debug_uart_init()). This can be useful just as a check that
594 everything is working.
595
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596config DEBUG_UART_SKIP_INIT
597 bool "Skip UART initialization"
7828e3cf 598 depends on DEBUG_UART
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599 help
600 Select this if the UART you want to use for debug output is already
601 initialized by the time U-Boot starts its execution.
602
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603config DEBUG_UART_NS16550_CHECK_ENABLED
604 bool "Check if UART is enabled on output"
605 depends on DEBUG_UART
606 depends on DEBUG_UART_NS16550
607 help
608 Select this if puts()/putc() might be called before the debug UART
609 has been initialized. If this is disabled, putc() might sit in a
610 tight loop if it is called before debug_uart_init() has been called.
611
612 Note that this does not work for every ns16550-compatible UART and
613 so has to be enabled carefully or you might notice lost characters.
614
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615config ALTERA_JTAG_UART
616 bool "Altera JTAG UART support"
617 depends on DM_SERIAL
618 help
619 Select this to enable an JTAG UART for Altera devices.The JTAG UART
620 core implements a method to communicate serial character streams
621 between a host PC and a Qsys system on an Altera FPGA. Please find
622 details on the "Embedded Peripherals IP User Guide" of Altera.
623
624config ALTERA_JTAG_UART_BYPASS
625 bool "Bypass output when no connection"
626 depends on ALTERA_JTAG_UART
627 help
628 Bypass console output and keep going even if there is no JTAG
629 terminal connection with the host. The console output will resume
630 once the JTAG terminal is connected. Without the bypass, the console
631 output will wait forever until a JTAG terminal is connected. If you
632 not are sure, say Y.
633
da2f838d
TC
634config ALTERA_UART
635 bool "Altera UART support"
636 depends on DM_SERIAL
637 help
638 Select this to enable an UART for Altera devices. Please find
639 details on the "Embedded Peripherals IP User Guide" of Altera.
640
60b49761
WW
641config AR933X_UART
642 bool "QCA/Atheros ar933x UART support"
643 depends on DM_SERIAL && SOC_AR933X
644 help
645 Select this to enable UART support for QCA/Atheros ar933x
646 devices. This driver uses driver model and requires a device
647 tree binding to operate, please refer to the document at
648 doc/device-tree-bindings/serial/qca,ar9330-uart.txt.
649
d7ac185f
AB
650config ARC_SERIAL
651 bool "ARC UART support"
652 depends on DM_SERIAL
653 help
654 Select this to enable support for ARC UART now typically
655 only used in Synopsys DesignWare ARC simulators like nSIM.
656
c2a38411
TR
657config ARM_DCC
658 bool "ARM Debug Communication Channel (DCC) as UART support"
659 depends on ARM
660 help
661 Select this to enable using the ARM DCC as a form of UART.
662
6ec739aa
WY
663config ATMEL_USART
664 bool "Atmel USART support"
665 help
666 Select this to enable USART support for Atmel SoCs. It can be
667 configured in the device tree, and input clock frequency can
668 be got from the clk node.
669
e567dfb2
SR
670config SPL_UART_CLOCK
671 int "SPL fixed UART input clock"
672 depends on ATMEL_USART && SPL && !SPL_CLK
673 default 132096000 if ARCH_AT91
674 help
675 Provide a fixed clock value as input to the UART controller. This
676 might be needed on platforms which can't enable CONFIG_SPL_CLK
677 because of SPL image size restrictions.
678
fa487594
AG
679config BCM283X_MU_SERIAL
680 bool "Support for BCM283x Mini-UART"
681 depends on DM_SERIAL && ARCH_BCM283X
682 default y
683 help
684 Select this to enable Mini-UART support on BCM283X family of SoCs.
685
6001985f
AG
686config BCM283X_PL011_SERIAL
687 bool "Support for BCM283x PL011 UART"
688 depends on PL01X_SERIAL && ARCH_BCM283X
689 default y
690 help
691 Select this to enable an overriding PL011 driver for BCM283X SoCs
692 that supports automatic disable, so that it only gets used when
693 the UART is actually muxed.
694
30581040
ÁFR
695config BCM6345_SERIAL
696 bool "Support for BCM6345 UART"
e9e8d80d 697 depends on DM_SERIAL
30581040
ÁFR
698 help
699 Select this to enable UART on BCM6345 SoCs.
700
44482e8a
SG
701config COREBOOT_SERIAL
702 bool "Coreboot UART support"
703 depends on DM_SERIAL
704 default y if SYS_COREBOOT
705 select SYS_NS16550
706 help
707 Select this to enable a ns16550-style UART where the platform data
708 comes from the coreboot 'sysinfo' tables. This allows U-Boot to have
709 a serial console on any platform without needing to change the
710 device tree, etc.
711
b29dbf98
SG
712config COREBOOT_SERIAL_FROM_DBG2
713 bool "Obtain UART from ACPI tables"
714 depends on COREBOOT_SERIAL
b1350636 715 default y
b29dbf98
SG
716 help
717 Select this to try to find a DBG2 record in the ACPI tables, in the
718 event that coreboot does not provide information about the UART in the
719 normal sysinfo tables. This provides a useful fallback when serial
720 is not enabled in coreboot.
721
0de653d8
JL
722config CORTINA_UART
723 bool "Cortina UART support"
724 depends on DM_SERIAL
725 help
726 Select this to enable UART support for Cortina-Access UART devices
727 found on CAxxxx SoCs.
728
fac379e1
TT
729config FSL_LINFLEXUART
730 bool "Freescale Linflex UART support"
731 depends on DM_SERIAL
732 help
733 Select this to enable the Linflex serial module found on some
734 NXP SoCs like S32V234.
735
5ed07cf5
BM
736config FSL_LPUART
737 bool "Freescale LPUART support"
738 help
739 Select this to enable a Low Power UART for Freescale VF610 and
740 QorIQ Layerscape devices.
741
db48e525
TR
742config LPUART
743 bool "Use the LPUART as console"
744 depends on FSL_LPUART
745
6985d496
SR
746config MVEBU_A3700_UART
747 bool "UART support for Armada 3700"
6985d496
SR
748 help
749 Choose this option to add support for UART driver on the Marvell
750 Armada 3700 SoC. The base address is configured via DT.
751
461ea079
AD
752config MCFUART
753 bool "Freescale ColdFire UART support"
754 help
755 Choose this option to add support for UART driver on the ColdFire
756 SoC's family. The serial communication channel provides a full-duplex
757 asynchronous/synchronous receiver and transmitter deriving an
758 operating frequency from the internal bus clock or an external clock.
759
8829e662
JT
760config MXC_UART
761 bool "IMX serial port support"
8ba59608 762 depends on ARCH_MX31 || MX5 || MX6 || MX7 || IMX8M
8829e662
JT
763 help
764 If you have a machine based on a Motorola IMX CPU you
765 can enable its onboard serial port by enabling this option.
766
cac73f20
KSC
767config NULLDEV_SERIAL
768 bool "Null serial device"
769 help
770 Select this to enable null serial device support. A null serial
771 device merely acts as a placeholder for a serial device and does
772 nothing for all it's operation.
773
9e160ee8
PT
774config PIC32_SERIAL
775 bool "Support for Microchip PIC32 on-chip UART"
776 depends on DM_SERIAL && MACH_PIC32
777 default y
778 help
779 Support for the UART found on Microchip PIC32 SoC's.
780
9591b635
TR
781config SYS_NS16550_SERIAL
782 bool "NS16550 UART or compatible legacy driver"
783 depends on !DM_SERIAL
784 select SYS_NS16550
785
786config SPL_SYS_NS16550_SERIAL
787 bool "NS16550 UART or compatible legacy driver in SPL"
788 depends on SPL && !SPL_DM_SERIAL
789 default y if SYS_NS16550_SERIAL || ARCH_SUNXI || ARCH_OMAP2PLUS
790 select SYS_NS16550
791
9e39003e
TC
792config SYS_NS16550
793 bool "NS16550 UART or compatible"
794 help
795 Support NS16550 UART or compatible. This can be enabled in the
796 device tree with the correct input clock frequency. If the input
797 clock frequency is not defined in the device tree, the macro
91092132 798 CFG_SYS_NS16550_CLK defined in a legacy board header file will
9e39003e
TC
799 be used. It can be a constant or a function to get clock, eg,
800 get_serial_clock().
801
62cbde4c
SG
802config NS16550_DYNAMIC
803 bool "Allow NS16550 to be configured at runtime"
9591b635 804 depends on SYS_NS16550
62cbde4c
SG
805 default y if SYS_COREBOOT || SYS_SLIMBOOTLOADER
806 help
807 Enable this option to allow device-tree control of the driver.
808
809 Normally this driver is controlled by the following options:
810
62cbde4c
SG
811 It is not a good practice for a driver to be statically configured,
812 since it prevents the same driver being used for different types of
813 UARTs in a system. This option avoids this problem at the cost of a
814 slightly increased code size.
815
9591b635
TR
816config SYS_NS16550_MEM32
817 bool "If memory-mapped, 32bit access is needed for ns16550 register access"
818 depends on SYS_NS16550
819 help
820 If enabled, if memory-mapped, indicates that 32-bit access should be
821 used (instead of 8-bit) for register access.
822
823config SYS_NS16550_PORT_MAPPED
824 bool "Port I/O is used for ns16550 register access"
825 depends on SYS_NS16550
826 help
827 If enabled, port I/O is used for ns16550 register access. If not
828 enabled, then the UART is memory-mapped.
829
830config SYS_NS16550_REG_SIZE
831 int "ns16550 register width and endianness"
832 depends on SYS_NS16550_SERIAL || SPL_SYS_NS16550_SERIAL
833 range -4 4
834 default -4 if ARCH_OMAP2PLUS || ARCH_SUNXI
835 default 1
836 help
837 Indicates register width and also endianness. If positive, big-endian
838 access is used. If negative, little-endian is used.
839
840config SPL_NS16550_MIN_FUNCTIONS
841 bool "Only provide NS16550_init and NS16550_putc in SPL"
842 depends on SPL_SYS_NS16550_SERIAL && PPC
843 help
844 Enable this if you desire to only have use of the NS16550_init and
845 NS16550_putc functions for the serial driver located at
846 drivers/serial/ns16550.c. This option is useful for saving space for
847 already greatly restricted images, including but not limited to
848 NAND_SPL configurations.
849
c5f8dd48
AS
850config INTEL_MID_SERIAL
851 bool "Intel MID platform UART support"
852 depends on DM_SERIAL && OF_CONTROL
853 depends on INTEL_MID
854 select SYS_NS16550
855 help
856 Select this to enable a UART for Intel MID platforms.
857 This uses the ns16550 driver as a library.
858
d10fc50f
AG
859config PL011_SERIAL
860 bool "ARM PL011 driver"
861 depends on !DM_SERIAL
862 help
863 Select this to enable a UART for platforms using PL011.
864
cf2c7784
AG
865config PL01X_SERIAL
866 bool "ARM PL010 and PL011 driver"
867 depends on DM_SERIAL
868 help
869 Select this to enable a UART for platforms using PL010 or PL011.
870
2fc24d53
SG
871config ROCKCHIP_SERIAL
872 bool "Rockchip on-chip UART support"
9ee6c076 873 depends on DM_SERIAL
6dcaf2d2 874 select SYS_NS16550
2fc24d53
SG
875 help
876 Select this to enable a debug UART for Rockchip devices when using
9ee6c076 877 OF_PLATDATA (i.e. a compiled-in device tree replacemenmt).
2fc24d53
SG
878 This uses the ns16550 driver, converting the platdata from of-platdata
879 to the ns16550 format.
880
0d9ff95c
MK
881config S5P_SERIAL
882 bool "Support for Samsung S5P UART"
d520e1fb 883 depends on ARCH_APPLE || ARCH_EXYNOS || ARCH_S5PC1XX
0d9ff95c
MK
884 default y
885 help
886 Select this to enable Samsung S5P UART support.
887
5745de2c
SB
888config S5P4418_PL011_SERIAL
889 bool "Extended PL011 driver for S5P4418"
890 depends on DM_SERIAL && PL01X_SERIAL && ARCH_NEXELL
891 default y
892 help
893 Select this to enable support of the PL011 UARTs in the S5P4418 SOC.
894 With this driver the UART-clocks are set to the appropriate rate
895 (if not 'skip-init').
896
af282245
SG
897config SANDBOX_SERIAL
898 bool "Sandbox UART support"
2ea65f3e 899 depends on SANDBOX
efa51f2b 900 imply SERIAL_PUTS
af282245
SG
901 help
902 Select this to enable a seral UART for sandbox. This is required to
903 operate correctly, otherwise you will see no serial output from
904 sandbox. The emulated UART will display to the console and console
905 input will be fed into the UART. This allows you to interact with
906 U-Boot.
907
908 The operation of the console is controlled by the -t command-line
909 flag. In raw mode, U-Boot sees all characters from the terminal
910 before they are processed, including Ctrl-C. In cooked mode, Ctrl-C
911 is processed by the terminal, and terminates U-Boot. Valid options
912 are:
913
914 -t raw-with-sigs Raw mode, Ctrl-C will terminate U-Boot
915 -t raw Raw mode, Ctrl-C is processed by U-Boot
916 -t cooked Cooked mode, Ctrl-C terminates
917
03a38a39
MV
918config SCIF_CONSOLE
919 bool "Renesas SCIF UART support"
f9aabd45 920 depends on SH || ARCH_RENESAS
03a38a39
MV
921 help
922 Select this to enable Renesas SCIF UART. To operate serial ports
923 on systems with RCar or SH SoCs, say Y to this option. If unsure,
924 say N.
925
f9f3209a
TR
926choice
927 prompt "SCIF console port"
928 depends on SCIF_CONSOLE && (!DM_SERIAL || (SPL && !SPL_DM_SERIAL))
929
930config CONS_SCIF0
931 bool "SCIF0"
932
933config CONS_SCIF1
934 bool "SCIF1"
935
936config CONS_SCIF2
937 bool "SCIF2"
938
939config CONS_SCIF4
940 bool "SCIF4"
941
942config CONS_SCIFA0
943 bool "SCIFA0"
944
945endchoice
946
5d14c336
TR
947config SH_SCIF_CLK_FREQ
948 int "SCIF console clock frequency"
949 depends on SCIF_CONSOLE && (!DM_SERIAL || (SPL && !SPL_DM_SERIAL))
950 default 65000000
951
74d11d37
SA
952config SEMIHOSTING_SERIAL
953 bool "Semihosting UART support"
954 depends on SEMIHOSTING && !SERIAL_RX_BUFFER
955 help
956 Select this to enable a serial UART using semihosting. Special halt
957 instructions will be issued which an external debugger (such as a
958 JTAG emulator) may interpret. The debugger will display U-Boot's
959 console output on the host system.
960
961 Enable this option only if you are using a debugger which supports
962 semihosting. If you are not using a debugger, this driver will halt
963 the boot.
964
ff247b7a 965config UNIPHIER_SERIAL
b6ef3a3f 966 bool "Support for UniPhier on-chip UART"
2ea65f3e 967 depends on ARCH_UNIPHIER
85dc2fe1 968 default y
ff247b7a 969 help
b6ef3a3f
MY
970 If you have a UniPhier based board and want to use the on-chip
971 serial ports, say Y to this option. If unsure, say N.
dcfe4a54 972
54e24d33
MS
973config XILINX_UARTLITE
974 bool "Xilinx Uarlite support"
54fdef24 975 depends on DM_SERIAL
54e24d33
MS
976 help
977 If you have a Xilinx based board and want to use the uartlite
978 serial ports, say Y to this option. If unsure, say N.
979
bfcef28a
BG
980config MESON_SERIAL
981 bool "Support for Amlogic Meson UART"
982 depends on DM_SERIAL && ARCH_MESON
983 help
984 If you have an Amlogic Meson based board and want to use the on-chip
985 serial ports, say Y to this option. If unsure, say N.
986
142a20c3
MK
987config MSM_SERIAL
988 bool "Qualcomm on-chip UART"
989 depends on DM_SERIAL
990 help
991 Support Data Mover UART used on Qualcomm Snapdragon SoCs.
992 It should support all Qualcomm devices with UARTDM version 1.4,
993 for example APQ8016 and MSM8916.
994 Single baudrate is supported in current implementation (115200).
6985d496 995
324df15a
DS
996config MSM_GENI_SERIAL
997 bool "Qualcomm on-chip GENI UART"
998 help
999 Support UART based on Generic Interface (GENI) Serial Engine (SE),
1000 used on Qualcomm Snapdragon SoCs. Should support all qualcomm SOCs
1001 with Qualcomm Universal Peripheral (QUP) Wrapper cores,
1002 i.e. newer ones, starting from SDM845.
1003 Driver works in FIFO mode.
1004 Multiple baudrates supported.
1005
ff476897
MV
1006config MXS_AUART_SERIAL
1007 bool "MXS AUART"
1008 depends on DM_SERIAL
1009 help
1010 Support for Freescale i.MX23 / i.MX28 AUART or Application UART IP.
1011 This IP is present in the aforementioned SoCs, however this is not
1012 the IP used to drive the Debug UART port, for that see PL01X_SERIAL .
1013
f1054661
SR
1014config OCTEON_SERIAL_BOOTCMD
1015 bool "MIPS Octeon PCI remote bootcmd input"
1016 depends on ARCH_OCTEON
1017 depends on DM_SERIAL
1018 select SYS_IS_IN_ENV
1019 select CONSOLE_MUX
1020 help
1021 This driver supports remote input over the PCIe bus from a host
1022 to U-Boot for entering commands. It is utilized by the host
1023 commands 'oct-remote-load' and 'oct-remote-bootcmd'.
1024
4dead10d
SR
1025config OCTEON_SERIAL_PCIE_CONSOLE
1026 bool "MIPS Octeon PCIe remote console"
1027 depends on ARCH_OCTEON
1028 depends on (DM_SERIAL && DM_STDIO)
1029 select SYS_STDIO_DEREGISTER
1030 select SYS_CONSOLE_IS_IN_ENV
1031 select CONSOLE_MUX
1032 help
1033 This driver supports remote console over the PCIe bus when the
1034 Octeon is running in PCIe target mode. The host program
1035 'oct-remote-console' can be used to connect to this console.
1036 The console number will likely be 0 or 1.
1037
5d754197
LV
1038config OMAP_SERIAL
1039 bool "Support for OMAP specific UART"
1040 depends on DM_SERIAL
586bde93 1041 default y if (ARCH_OMAP2PLUS || ARCH_K3)
5d754197
LV
1042 select SYS_NS16550
1043 help
1044 If you have an TI based SoC and want to use the on-chip serial
1045 port, say Y to this option. If unsure say N.
1046
6f9347f3
MS
1047config OWL_SERIAL
1048 bool "Actions Semi OWL UART"
1049 depends on DM_SERIAL && ARCH_OWL
1050 help
1051 If you have a Actions Semi OWL based board and want to use the on-chip
1052 serial port, say Y to this option. If unsure, say N.
1053 Single baudrate is supported in current implementation (115200).
1054
d6ba787e
AP
1055config HTIF_CONSOLE
1056 bool "RISC-V HTIF console support"
1057 depends on DM_SERIAL && 64BIT
1058 help
1059 Select this to enable host transfer interface (HTIF) based serial
1060 console. The HTIF device is quite common in RISC-V emulators and
1061 RISC-V ISS so this driver allows using U-Boot on such platforms.
1062
e2842496
AP
1063config SIFIVE_SERIAL
1064 bool "SiFive UART support"
1065 depends on DM_SERIAL
1066 help
1067 This driver supports the SiFive UART. If unsure say N.
1068
214a17e6
PC
1069config STI_ASC_SERIAL
1070 bool "STMicroelectronics on-chip UART"
1071 depends on DM_SERIAL && ARCH_STI
1072 help
1073 Select this to enable Asynchronous Serial Controller available
1074 on STiH410 SoC. This is a basic implementation, it supports
1075 following baudrate 9600, 19200, 38400, 57600 and 115200.
1076
ae74de0d 1077config STM32_SERIAL
84e9dcc1 1078 bool "STMicroelectronics STM32 SoCs on-chip UART"
2514c2d0 1079 depends on DM_SERIAL && (STM32F4 || STM32F7 || STM32H7 || ARCH_STM32MP)
84e9dcc1 1080 help
2514c2d0
PD
1081 If you have a machine based on a STM32 F4, F7, H7 or MP1 SOC
1082 you can enable its onboard serial ports, say Y to this option.
776b2ddb 1083 If unsure, say N.
84e9dcc1 1084
809704eb
MS
1085config ZYNQ_SERIAL
1086 bool "Cadence (Xilinx Zynq) UART support"
54fdef24 1087 depends on DM_SERIAL
809704eb
MS
1088 help
1089 This driver supports the Cadence UART. It is found e.g. in Xilinx
1090 Zynq/ZynqMP.
1091
849b1160
RL
1092config MTK_SERIAL
1093 bool "MediaTek High-speed UART support"
1094 depends on DM_SERIAL
1095 help
1096 Select this to enable UART support for MediaTek High-speed UART
1097 devices. This driver uses driver model and requires a device
1098 tree binding to operate.
1099 The High-speed UART is compatible with the ns16550a UART and have
1100 its own high-speed registers.
1101
2161f1fc
WG
1102config MT7620_SERIAL
1103 bool "UART driver for MediaTek MT7620 and earlier SoCs"
1104 depends on DM_SERIAL
1105 help
1106 Select this to enable UART support for MediaTek MT7620 and earlier
1107 SoCs. This driver uses driver model and requires a device tree
1108 binding to operate.
1109 The UART driver for MediaTek MT7620 and earlier SoCs is *NOT*
1110 compatible with the ns16550a UART.
1111
dd7ff472
CL
1112config MPC8XX_CONS
1113 bool "Console driver for MPC8XX"
ee1e600c 1114 depends on MPC8xx
dd7ff472
CL
1115 default y
1116
6f6a0b74
JL
1117config NPCM_SERIAL
1118 bool "Nuvoton NPCM UART driver"
1119 depends on DM_SERIAL
1120 help
1121 Select this to enable UART support for Nuvoton BMCs
1122 (NPCM7xx and NPCM8xx).
1123 The driver enables the onboard serial port with 8-N-1
1124 configuration.
1125
384d5cfe
PF
1126config XEN_SERIAL
1127 bool "XEN serial support"
1128 depends on XEN
1129 help
1130 If built without DM support, then requires Xen
1131 to be built with CONFIG_VERBOSE_DEBUG.
1132
eb2daa0f
JY
1133config XTENSA_SEMIHOSTING_SERIAL
1134 bool "Xtensa Semihosting UART support"
1135 depends on DM_SERIAL
1136 depends on XTENSA_SEMIHOSTING
1137 imply SERIAL_PUTS
1138 help
1139 Select this to enable a serial UART using Xtensa semihosting.
1140
dd7ff472
CL
1141choice
1142 prompt "Console port"
1143 default 8xx_CONS_SMC1
1144 depends on MPC8XX_CONS
1145 help
1146 Depending on board, select one serial port
1147 (CONFIG_8xx_CONS_SMC1 or CONFIG_8xx_CONS_SMC2)
1148
1149config 8xx_CONS_SMC1
1150 bool "SMC1"
1151
1152config 8xx_CONS_SMC2
1153 bool "SMC2"
1154
1155endchoice
1156
1157config SYS_SMC_RXBUFLEN
1158 int "Console Rx buffer length"
1159 depends on MPC8XX_CONS
1160 default 1
1161 help
1162 With CONFIG_SYS_SMC_RXBUFLEN it is possible to define
1163 the maximum receive buffer length for the SMC.
1164 This option is actual only for 8xx possible.
1165 If using CONFIG_SYS_SMC_RXBUFLEN also CONFIG_SYS_MAXIDLE
1166 must be defined, to setup the maximum idle timeout for
1167 the SMC.
1168
1169config SYS_MAXIDLE
1170 int "maximum idle timeout"
1171 depends on MPC8XX_CONS
1172 default 0
1173
1174config SYS_BRGCLK_PRESCALE
1175 int "BRG Clock Prescale"
1176 depends on MPC8XX_CONS
1177 default 1
1178
1179config SYS_SDSR
1180 hex "SDSR Value"
1181 depends on MPC8XX_CONS
1182 default 0x83
1183
1184config SYS_SDMR
1185 hex "SDMR Value"
1186 depends on MPC8XX_CONS
a077ac13 1187 default 0x0
dd7ff472 1188
52510486 1189endif
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