| /linux-6.12.1/Documentation/admin-guide/ |
| D | serial-console.rst | 3 Linux Serial Console
6 To use a serial port as console you need to compile the support into your
10 …ices --> Serial drivers --> 8250/16550 and compatible serial support --> Console on 8250/16550 and…
14 It is possible to specify multiple devices for console output. You can
16 use for console output.
20 console=device,options
22 device: tty0 for the foreground virtual console
23 ttyX for any other virtual console
35 You can specify multiple console= options on the kernel command line.
39 the last device will be used when you open ``/dev/console``.
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| D | braille-console.rst | 1 Linux Braille Console
6 console (see :ref:`Documentation/admin-guide/serial-console.rst <serial_console>`), and
8 (in :menuselection:`Device Drivers --> Accessibility support --> Console on braille device`).
10 Then you need to specify a ``console=brl``, option on the kernel command line, the
13 console=brl,serial_options...
16 :ref:`Documentation/admin-guide/serial-console.rst <serial_console>`.
18 …o for instance you can use ``console=brl,ttyS0`` if the braille device is connected to the first s…
21 By default, the braille device will just show the last kernel message (console
31 For simplicity, only one braille console can be enabled, other uses of
32 ``console=brl,...`` will be discarded. Also note that it does not interfere with
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| /linux-6.12.1/drivers/tty/serial/ |
| D | Kconfig | 14 the console before standard serial driver is probed. The console is
33 bool "Support for console on AMBA serial port"
38 console (the system console is the device which receives all kernel
41 Even if you say Y here, the currently visible framebuffer console
42 (/dev/tty0) will still be used as the system console by default, but
44 "console=ttyAM0". (Try "man bootparam" or see the documentation of
60 bool "Support for console on AMBA serial port"
66 console (the system console is the device which receives all kernel
69 Even if you say Y here, the currently visible framebuffer console
70 (/dev/tty0) will still be used as the system console by default, but
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| D | tegra-tcu.c | 6 #include <linux/console.h>
25 struct console console; member
148 static void tegra_tcu_console_write(struct console *cons, const char *s, in tegra_tcu_console_write()
151 struct tegra_tcu *tcu = container_of(cons, struct tegra_tcu, console); in tegra_tcu_console_write()
156 static int tegra_tcu_console_setup(struct console *cons, char *options) in tegra_tcu_console_setup()
200 /* setup the console */ in tegra_tcu_probe()
201 strcpy(tcu->console.name, "ttyTCU"); in tegra_tcu_probe()
202 tcu->console.device = uart_console_device; in tegra_tcu_probe()
203 tcu->console.flags = CON_PRINTBUFFER | CON_ANYTIME; in tegra_tcu_probe()
204 tcu->console.index = -1; in tegra_tcu_probe()
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| /linux-6.12.1/include/linux/ |
| D | console.h | 2 * linux/include/linux/console.h
42 * @owner: the module to get references of when this console is used
43 * @con_startup: set up the console and return its name (like VGA, EGA, ...)
44 * @con_init: initialize the console on @vc. @init is true for the very first
46 * @con_deinit: deinitialize the console from @vc.
54 * Invoked by csi_M and printing to the console.
55 * @con_switch: notifier about the console switch; it is supposed to return
57 * @con_blank: blank/unblank the console. The target mode is passed in @blank.
60 * @con_font_set: set console @vc font to @font with height @vpitch. @flags can
66 * @con_resize: resize the @vc console to @width x @height. @from_user is true
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| D | vt_kern.h | 6 * this really is an extension of the vc_cons structure in console.c, but
24 /* console.c */
26 int vc_allocate(unsigned int console);
27 int vc_cons_allocated(unsigned int console);
30 struct vc_data *vc_deallocate(unsigned int console);
157 int vt_do_kdskbmode(unsigned int console, unsigned int arg);
158 int vt_do_kdskbmeta(unsigned int console, unsigned int arg);
162 unsigned int console);
164 int vt_do_kdskled(unsigned int console, int cmd, unsigned long arg, int perm);
165 int vt_do_kdgkbmode(unsigned int console);
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| /linux-6.12.1/drivers/tty/hvc/ |
| D | Kconfig | 6 Generic "hypervisor virtual console" infrastructure for various
8 It will automatically be selected if one of the back-end console drivers
15 bool "pSeries Hypervisor Virtual Console support"
21 console. This driver allows each pSeries partition to have a console
29 bool "OPAL Console support"
35 PowerNV machines running under OPAL need that driver to get a console
38 bool "IBM RTAS Console support"
42 IBM Console device driver which makes use of RTAS
45 bool "z/VM IUCV Hypervisor console support (VM only)"
51 This driver provides a Hypervisor console (HVC) back-end to access
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| /linux-6.12.1/Documentation/fb/ |
| D | fbcon.rst | 2 The Framebuffer Console
5 The framebuffer console (fbcon), as its name implies, is a text
6 console running on top of the framebuffer device. It has the functionality of
7 any standard text console driver, such as the VGA console, with the added
10 In the x86 architecture, the framebuffer console is optional, and
14 What are the features of fbcon? The framebuffer console supports
22 The framebuffer console can be enabled by using your favorite kernel
24 Console display driver support->Framebuffer Console Support.
43 framebuffer console. Depending on the driver, you may get a blanked or
46 will still get a VGA console.
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| /linux-6.12.1/kernel/printk/ |
| D | nbcon.c | 7 #include <linux/console.h>
25 * Printk console printing implementation for consoles which does not depend
28 * The state of the console is maintained in the "nbcon_state" atomic
31 * The console is locked when:
34 * console. Only higher priority contexts are allowed to take over the
35 * lock. A value of 0 (NBCON_PRIO_NONE) means the console is not locked.
37 * - The 'cpu' field denotes on which CPU the console is locked. It is used
49 * - The 'unsafe' field allows to take over the console in a safe way in the
51 * shared resources or when the console device is manipulated. It can be
52 * cleared, for example, after emitting one character when the console
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| D | internal.h | 5 #include <linux/console.h>
26 * true, all printing via console lock occurs within a dedicated
99 u64 nbcon_seq_read(struct console *con);
100 void nbcon_seq_force(struct console *con, u64 seq);
101 bool nbcon_alloc(struct console *con);
102 void nbcon_free(struct console *con);
105 bool nbcon_legacy_emit_next_record(struct console *con, bool *handover,
107 bool nbcon_kthread_create(struct console *con);
108 void nbcon_kthread_stop(struct console *con);
112 * Check if the given console is currently capable and allowed to print
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| D | printk.c | 10 * to the console. Added hook for sending the console messages
11 * elsewhere, in preparation for a serial line console (someday).
26 #include <linux/console.h>
75 EXPORT_TRACEPOINT_SYMBOL_GPL(console);
85 * console_mutex protects console_list updates and console->flags updates.
87 * accessible via the console list.
92 * console_sem protects updates to console->seq
93 * and also provides serialization for console printing.
242 * console_list_lock - Lock the console list
244 * For console list or console->flags updates
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| D | braille.h | 14 * Setup console according to braille options.
24 _braille_register_console(struct console *console, struct console_cmdline *c);
27 _braille_unregister_console(struct console *console);
43 _braille_register_console(struct console *console, struct console_cmdline *c) in _braille_register_console() argument
49 _braille_unregister_console(struct console *console) in _braille_unregister_console() argument
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| D | braille.c | 5 #include <linux/console.h>
38 _braille_register_console(struct console *console, struct console_cmdline *c) in _braille_register_console() argument
43 console->flags |= CON_BRL; in _braille_register_console()
44 rtn = braille_register_console(console, c->index, c->options, in _braille_register_console()
52 _braille_unregister_console(struct console *console) in _braille_unregister_console() argument
54 if (console->flags & CON_BRL) in _braille_unregister_console()
55 return braille_unregister_console(console); in _braille_unregister_console()
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| /linux-6.12.1/drivers/net/ethernet/cavium/liquidio/ |
| D | octeon_console.c | 101 /* Structure that defines a single console.
104 * The actual usable size of each console is console_buf_size -1;
422 struct octeon_console *console; in octeon_console_handle_result() local
424 console = &oct->console[console_num]; in octeon_console_handle_result()
426 console->waiting = 0; in octeon_console_handle_result()
432 struct octeon_console *console, in output_console_line() argument
449 * having been read from the console). in output_console_line()
453 if (console->leftover[0] && in output_console_line()
454 (line != console->leftover)) { in output_console_line()
455 if (console->print) in output_console_line()
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| /linux-6.12.1/drivers/video/console/ |
| D | Kconfig | 6 menu "Console display driver support"
9 bool "VGA text console" if EXPERT || !X86
22 <ftp://ibiblio.org/pub/Linux/utils/console/>.
28 tristate "MDA text console (dual-headed)"
42 tristate "SGI Newport Console support"
46 Say Y here if you want the console on the Newport aka XL graphics
54 int "Initial number of console screen columns"
64 int "Initial number of console screen rows"
75 bool "Framebuffer Console support"
82 Low-level framebuffer-based console driver.
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| /linux-6.12.1/Documentation/driver-api/ |
| D | console.rst | 4 Console Drivers
7 The Linux kernel has 2 general types of console drivers. The first type is
15 any time with each driver sharing the console with other drivers including
16 the system driver. However, modular drivers cannot take over the console
19 of driver occupying the consoles.) They can only take over the console that is
21 released by the console, the system driver will take over.
25 do_take_over_console() - load and bind driver to console layer
35 examined. This shows the console backends currently registered by the
89 Support for binding and unbinding console drivers
94 console to KD_GRAPHICS is X.
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| /linux-6.12.1/drivers/tty/ |
| D | Kconfig | 47 bool "Enable character translations in console" if EXPERT
53 bool "Support for console on virtual terminal" if EXPERT
57 The system console is the device which receives all kernel messages
60 a physical terminal) can be used as system console. This is the most
63 you should say Y to "Console on serial port", below).
66 terminal (/dev/tty0) will be used as system console. You can change
67 that with a kernel command line option such as "console=tty3" which
68 would use the third virtual terminal as system console. (Try "man
79 bool "Support for binding and unbinding console drivers"
83 terminal through console drivers. On these systems, at least one
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| /linux-6.12.1/lib/fonts/ |
| D | Kconfig | 16 your frame buffer console usually use.
30 provided by the text console 80x50 (and higher) modes).
43 provided by the VGA text console 80x25 mode.
48 bool "Mac console 6x11 font (not supported by all drivers)" if FONTS
52 Small console font with Macintosh-style high-half glyphs. Some Mac
56 bool "console 7x14 font (not supported by all drivers)" if FONTS
59 Console font with characters just a bit smaller than the default.
64 bool "Pearl (old m68k) console 8x8 font" if FONTS
68 Small console font with PC-style control-character and high-half
72 bool "Acorn console 8x8 font" if FONTS
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| /linux-6.12.1/drivers/hwtracing/stm/ |
| D | console.c | 3 * Simple kernel console driver for STM devices
6 * STM console will send kernel messages over STM devices to a trace host.
11 #include <linux/console.h>
20 struct console console; member
23 .name = "console",
32 stm_console_write(struct console *con, const char *buf, unsigned len) in stm_console_write()
34 struct stm_console *sc = container_of(con, struct stm_console, console); in stm_console_write()
43 strcpy(sc->console.name, "stm_console"); in stm_console_link()
44 sc->console.write = stm_console_write; in stm_console_link()
45 sc->console.flags = CON_ENABLED | CON_PRINTBUFFER; in stm_console_link()
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| /linux-6.12.1/arch/powerpc/ |
| D | Kconfig.debug | 52 warnings can be printed to the console when instructions are
160 bool "Support for early boot text console (BootX or OpenFirmware only)"
179 prompt "Early debugging console"
182 Use the selected console for early debugging. Careful, if you
194 bool "LPAR HV Console"
198 console on vterm 0.
201 bool "LPAR HVSI Console"
205 console on a specified vterm.
220 bool "RTAS Console"
224 Select this to enable early debugging via the RTAS console.
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| /linux-6.12.1/arch/um/drivers/ |
| D | stderr_console.c | 4 #include <linux/console.h>
9 /* trivial console driver -- simply dump everything to stderr */
13 * boot process it becomes the default console.
19 static void stderr_console_write(struct console *console, const char *string, in stderr_console_write() argument
25 static struct console stderr_console = {
48 /* The previous behavior of not unregistering led to /dev/console being
51 * console to become the default console, and /dev/console can then be
54 * normal console is good enough to show you all available output.
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| D | stdio_console.c | 12 #include <linux/console.h>
32 printk(KERN_INFO "Virtual console %d assigned device '%s'\n", dev, in stdio_announce()
39 .xterm_title = "Virtual Console #%d",
50 .name = "UML console",
56 .read_irq_name = "console",
57 .write_irq_name = "console-write",
112 static void uml_console_write(struct console *console, const char *string, in uml_console_write() argument
115 struct line *line = &vts[console->index]; in uml_console_write()
123 static struct tty_driver *uml_console_device(struct console *c, int *index) in uml_console_device()
129 static int uml_console_setup(struct console *co, char *options) in uml_console_setup()
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| /linux-6.12.1/Documentation/driver-api/tty/ |
| D | console.rst | 4 Console title
9 Struct Console
12 .. kernel-doc:: include/linux/console.h
13 :identifiers: console cons_flags
18 .. kernel-doc:: include/linux/console.h
24 .. kernel-doc:: include/linux/console.h
27 Console functions
30 .. kernel-doc:: include/linux/console.h
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| /linux-6.12.1/drivers/usb/serial/ |
| D | console.c | 3 * USB Serial Console driver
17 #include <linux/console.h>
29 static struct console usbcons;
33 * USB Serial console driver
36 * and implements a phony serial console in the same way that
43 * console speeds based on the command line arguments.
55 static int usb_console_setup(struct console *co, char *options) in usb_console_setup()
109 * no need to check the index here: if the index is wrong, console in usb_console_setup()
158 dev_err(&port->dev, "could not open USB console port\n"); in usb_console_setup()
177 /* The console is special in terms of closing the device so in usb_console_setup()
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| /linux-6.12.1/arch/m68k/ |
| D | Kconfig.devices | 45 tristate "NatFeat console driver"
48 Say Y to include support for the ARAnyM NatFeat console driver
49 which allows the console output to be redirected to the stderr
122 bool "Support for serial port console"
126 system console (the system console is the device which receives all
131 Even if you say Y here, the currently visible virtual console
132 (/dev/tty0) will still be used as the system console by default, but
134 "console=ttyS1". (Try "man bootparam" or see the documentation of
138 If you don't have a graphical console and you say Y here, the
140 system console.
|