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Masahiro Yamada0b11dbf2015-07-26 02:46:26 +09001#
2# Serial device configuration
3#
4
5menu "Serial drivers"
6
Hans de Goede8c458582015-08-08 17:45:18 +02007config REQUIRE_SERIAL_CONSOLE
8 bool "Require a serial port for console"
9 # Running without a serial console is not supported by the
10 # non-dm serial code
11 depends on DM_SERIAL
12 default y
13 help
14 Require a serial port for the console, and panic if none is found
15 during serial port initialization (default y). Set this to n on
16 boards which have no debug serial port whatsoever.
17
Masahiro Yamadada333ae2014-10-23 22:26:09 +090018config DM_SERIAL
19 bool "Enable Driver Model for serial drivers"
20 depends on DM
21 help
Simon Glassf94a1be2015-02-05 21:41:35 -070022 Enable driver model for serial. This replaces
23 drivers/serial/serial.c with the serial uclass, which
24 implements serial_putc() etc. The uclass interface is
25 defined in include/serial.h.
Masahiro Yamadaff247b72014-10-23 22:26:11 +090026
Simon Glass2f964aa2015-01-26 18:27:07 -070027config DEBUG_UART
28 bool "Enable an early debug UART for debugging"
29 help
30 The debug UART is intended for use very early in U-Boot to debug
31 problems when an ICE or other debug mechanism is not available.
32
33 To use it you should:
34 - Make sure your UART supports this interface
35 - Enable CONFIG_DEBUG_UART
36 - Enable the CONFIG for your UART to tell it to provide this interface
37 (e.g. CONFIG_DEBUG_UART_NS16550)
38 - Define the required settings as needed (see below)
39 - Call debug_uart_init() before use
40 - Call debug_uart_putc() to output a character
41
42 Depending on your platform it may be possible to use this UART before
43 a stack is available.
44
45 If your UART does not support this interface you can probably add
46 support quite easily. Remember that you cannot use driver model and
47 it is preferred to use no stack.
48
49 You must not use this UART once driver model is working and the
50 serial drivers are up and running (done in serial_init()). Otherwise
51 the drivers may conflict and you will get strange output.
52
Simon Glass21d00432015-01-26 18:27:09 -070053choice
54 prompt "Select which UART will provide the debug UART"
55 depends on DEBUG_UART
Thomas Choub1e361b2015-11-19 21:48:03 +080056 default DEBUG_UART_NS16550
Simon Glass21d00432015-01-26 18:27:09 -070057
Thomas Chou220e8022015-10-23 07:36:37 +080058config DEBUG_UART_ALTERA_JTAGUART
59 bool "Altera JTAG UART"
60 help
61 Select this to enable a debug UART using the altera_jtag_uart driver.
62 You will need to provide parameters to make this work. The driver will
63 be available until the real driver model serial is running.
64
Thomas Chouda2f8382015-10-21 21:26:54 +080065config DEBUG_UART_ALTERA_UART
66 bool "Altera UART"
67 help
68 Select this to enable a debug UART using the altera_uart driver.
69 You will need to provide parameters to make this work. The driver will
70 be available until the real driver model serial is running.
71
Simon Glass21d00432015-01-26 18:27:09 -070072config DEBUG_UART_NS16550
73 bool "ns16550"
74 help
75 Select this to enable a debug UART using the ns16550 driver. You
76 will need to provide parameters to make this work. The driver will
77 be available until the real driver model serial is running.
78
Simon Glass275854b2015-08-04 12:33:40 -060079config DEBUG_EFI_CONSOLE
80 bool "EFI"
81 depends on EFI_APP
82 help
83 Select this to enable a debug console which calls back to EFI to
84 output to the console. This can be useful for early debugging of
85 U-Boot when running on top of EFI (Extensive Firmware Interface).
86 This is a type of BIOS used by PCs.
87
Simon Glassbf6e7022015-07-02 18:15:54 -060088config DEBUG_UART_S5P
89 bool "Samsung S5P"
90 help
91 Select this to enable a debug UART using the serial_s5p driver. You
92 will need to provide parameters to make this work. The driver will
93 be available until the real driver-model serial is running.
94
Simon Glassc54c0a42015-10-17 19:41:22 -060095config DEBUG_UART_ZYNQ
96 bool "Xilinx Zynq"
97 help
Michal Simek6bf87da2015-12-01 14:29:34 +010098 Select this to enable a debug UART using the serial_zynq driver. You
Simon Glassc54c0a42015-10-17 19:41:22 -060099 will need to provide parameters to make this work. The driver will
100 be available until the real driver-model serial is running.
101
Francois Retiefe43ce3f2015-10-29 12:55:34 +0200102config DEBUG_UART_APBUART
103 depends on LEON3
104 bool "Gaisler APBUART"
105 help
106 Select this to enable a debug UART using the serial_leon3 driver. You
107 will need to provide parameters to make this work. The driver will
108 be available until the real driver model serial is running.
109
Simon Glass21d00432015-01-26 18:27:09 -0700110endchoice
111
Simon Glass2f964aa2015-01-26 18:27:07 -0700112config DEBUG_UART_BASE
113 hex "Base address of UART"
114 depends on DEBUG_UART
115 help
116 This is the base address of your UART for memory-mapped UARTs.
117
118 A default should be provided by your board, but if not you will need
119 to use the correct value here.
120
121config DEBUG_UART_CLOCK
122 int "UART input clock"
123 depends on DEBUG_UART
124 help
125 The UART input clock determines the speed of the internal UART
126 circuitry. The baud rate is derived from this by dividing the input
127 clock down.
128
129 A default should be provided by your board, but if not you will need
130 to use the correct value here.
131
Simon Glassdd0b0122015-02-27 22:06:25 -0700132config DEBUG_UART_SHIFT
133 int "UART register shift"
134 depends on DEBUG_UART
135 default 0 if DEBUG_UART
136 help
137 Some UARTs (notably ns16550) support different register layouts
138 where the registers are spaced either as bytes, words or some other
139 value. Use this value to specify the shift to use, where 0=byte
140 registers, 2=32-bit word registers, etc.
141
Simon Glass0e977bc2015-10-18 19:51:24 -0600142config DEBUG_UART_BOARD_INIT
143 bool "Enable board-specific debug UART init"
144 depends on DEBUG_UART
145 help
146 Some boards need to set things up before the debug UART can be used.
147 On these boards a call to debug_uart_init() is insufficient. When
148 this option is enabled, the function board_debug_uart_init() will
149 be called when debug_uart_init() is called. You can put any code
150 here that is needed to set up the UART ready for use, such as set
151 pin multiplexing or enable clocks.
152
Simon Glassc7fefcb2015-10-18 19:51:25 -0600153config DEBUG_UART_ANNOUNCE
154 bool "Show a message when the debug UART starts up"
155 depends on DEBUG_UART
156 help
157 Enable this option to show a message when the debug UART is ready
158 for use. You will see a message like "<debug_uart> " as soon as
159 U-Boot has the UART ready for use (i.e. your code calls
160 debug_uart_init()). This can be useful just as a check that
161 everything is working.
162
Thomas Chou220e8022015-10-23 07:36:37 +0800163config ALTERA_JTAG_UART
164 bool "Altera JTAG UART support"
165 depends on DM_SERIAL
166 help
167 Select this to enable an JTAG UART for Altera devices.The JTAG UART
168 core implements a method to communicate serial character streams
169 between a host PC and a Qsys system on an Altera FPGA. Please find
170 details on the "Embedded Peripherals IP User Guide" of Altera.
171
172config ALTERA_JTAG_UART_BYPASS
173 bool "Bypass output when no connection"
174 depends on ALTERA_JTAG_UART
175 help
176 Bypass console output and keep going even if there is no JTAG
177 terminal connection with the host. The console output will resume
178 once the JTAG terminal is connected. Without the bypass, the console
179 output will wait forever until a JTAG terminal is connected. If you
180 not are sure, say Y.
181
Thomas Chouda2f8382015-10-21 21:26:54 +0800182config ALTERA_UART
183 bool "Altera UART support"
184 depends on DM_SERIAL
185 help
186 Select this to enable an UART for Altera devices. Please find
187 details on the "Embedded Peripherals IP User Guide" of Altera.
188
Thomas Chou9e390032015-11-19 21:48:14 +0800189config SYS_NS16550
190 bool "NS16550 UART or compatible"
191 help
192 Support NS16550 UART or compatible. This can be enabled in the
193 device tree with the correct input clock frequency. If the input
194 clock frequency is not defined in the device tree, the macro
195 CONFIG_SYS_NS16550_CLK defined in a legacy board header file will
196 be used. It can be a constant or a function to get clock, eg,
197 get_serial_clock().
198
Simon Glassaf282242015-03-06 13:19:03 -0700199config SANDBOX_SERIAL
200 bool "Sandbox UART support"
Masahiro Yamada2ea65f32015-08-28 20:14:21 +0900201 depends on SANDBOX
Simon Glassaf282242015-03-06 13:19:03 -0700202 help
203 Select this to enable a seral UART for sandbox. This is required to
204 operate correctly, otherwise you will see no serial output from
205 sandbox. The emulated UART will display to the console and console
206 input will be fed into the UART. This allows you to interact with
207 U-Boot.
208
209 The operation of the console is controlled by the -t command-line
210 flag. In raw mode, U-Boot sees all characters from the terminal
211 before they are processed, including Ctrl-C. In cooked mode, Ctrl-C
212 is processed by the terminal, and terminates U-Boot. Valid options
213 are:
214
215 -t raw-with-sigs Raw mode, Ctrl-C will terminate U-Boot
216 -t raw Raw mode, Ctrl-C is processed by U-Boot
217 -t cooked Cooked mode, Ctrl-C terminates
218
Masahiro Yamadaff247b72014-10-23 22:26:11 +0900219config UNIPHIER_SERIAL
Masahiro Yamadab6ef3a32015-05-29 17:30:01 +0900220 bool "Support for UniPhier on-chip UART"
Masahiro Yamada2ea65f32015-08-28 20:14:21 +0900221 depends on ARCH_UNIPHIER
Masahiro Yamadaff247b72014-10-23 22:26:11 +0900222 help
Masahiro Yamadab6ef3a32015-05-29 17:30:01 +0900223 If you have a UniPhier based board and want to use the on-chip
224 serial ports, say Y to this option. If unsure, say N.
Simon Glassdcfe4a52015-07-27 15:47:23 -0600225
Masahiro Yamada0b11dbf2015-07-26 02:46:26 +0900226endmenu