2
* GRUB -- GRand Unified Bootloader
3
* Copyright (C) 2000,2001,2002,2003,2004,2005,2007,2008,2009,2010 Free Software Foundation, Inc.
5
* GRUB is free software: you can redistribute it and/or modify
6
* it under the terms of the GNU General Public License as published by
7
* the Free Software Foundation, either version 3 of the License, or
8
* (at your option) any later version.
10
* GRUB is distributed in the hope that it will be useful,
11
* but WITHOUT ANY WARRANTY; without even the implied warranty of
12
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13
* GNU General Public License for more details.
15
* You should have received a copy of the GNU General Public License
16
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
19
#include <grub/serial.h>
20
#include <grub/term.h>
21
#include <grub/types.h>
23
#include <grub/misc.h>
24
#include <grub/terminfo.h>
25
#include <grub/cpu/io.h>
26
#include <grub/extcmd.h>
27
#include <grub/i18n.h>
28
#include <grub/list.h>
30
#define FOR_SERIAL_PORTS(var) FOR_LIST_ELEMENTS((var), (grub_serial_ports))
32
/* Argument options. */
33
static const struct grub_arg_option options[] =
35
{"unit", 'u', 0, N_("Set the serial unit."), 0, ARG_TYPE_INT},
36
{"port", 'p', 0, N_("Set the serial port address."), 0, ARG_TYPE_STRING},
37
{"speed", 's', 0, N_("Set the serial port speed."), 0, ARG_TYPE_INT},
38
{"word", 'w', 0, N_("Set the serial port word length."), 0, ARG_TYPE_INT},
39
{"parity", 'r', 0, N_("Set the serial port parity."), 0, ARG_TYPE_STRING},
40
{"stop", 't', 0, N_("Set the serial port stop bits."), 0, ARG_TYPE_INT},
44
struct grub_serial_port *grub_serial_ports;
46
struct grub_serial_output_state
48
struct grub_terminfo_output_state tinfo;
49
struct grub_serial_port *port;
52
struct grub_serial_input_state
54
struct grub_terminfo_input_state tinfo;
55
struct grub_serial_port *port;
59
serial_put (grub_term_output_t term, const int c)
61
struct grub_serial_output_state *data = term->data;
62
data->port->driver->put (data->port, c);
66
serial_fetch (grub_term_input_t term)
68
struct grub_serial_input_state *data = term->data;
69
return data->port->driver->fetch (data->port);
72
const struct grub_serial_input_state grub_serial_terminfo_input_template =
76
.readkey = serial_fetch
80
const struct grub_serial_output_state grub_serial_terminfo_output_template =
90
struct grub_serial_input_state grub_serial_terminfo_input;
92
struct grub_serial_output_state grub_serial_terminfo_output;
96
static struct grub_term_input grub_serial_term_input =
99
.init = grub_terminfo_input_init,
100
.getkey = grub_terminfo_getkey,
101
.data = &grub_serial_terminfo_input
104
static struct grub_term_output grub_serial_term_output =
107
.putchar = grub_terminfo_putchar,
108
.getwh = grub_terminfo_getwh,
109
.getxy = grub_terminfo_getxy,
110
.gotoxy = grub_terminfo_gotoxy,
111
.cls = grub_terminfo_cls,
112
.setcolorstate = grub_terminfo_setcolorstate,
113
.setcursor = grub_terminfo_setcursor,
114
.flags = GRUB_TERM_CODE_TYPE_ASCII,
115
.data = &grub_serial_terminfo_output,
116
.normal_color = GRUB_TERM_DEFAULT_NORMAL_COLOR,
117
.highlight_color = GRUB_TERM_DEFAULT_HIGHLIGHT_COLOR,
122
static struct grub_serial_port *
123
grub_serial_find (char *name)
125
struct grub_serial_port *port;
127
FOR_SERIAL_PORTS (port)
128
if (grub_strcmp (port->name, name) == 0)
131
#ifndef GRUB_MACHINE_EMU
132
if (!port && grub_memcmp (name, "port", sizeof ("port") - 1) == 0
133
&& grub_isdigit (name [sizeof ("port") - 1]))
135
name = grub_serial_ns8250_add_port (grub_strtoul (&name[sizeof ("port") - 1],
140
FOR_SERIAL_PORTS (port)
141
if (grub_strcmp (port->name, name) == 0)
150
grub_cmd_serial (grub_extcmd_context_t ctxt, int argc, char **args)
152
struct grub_arg_list *state = ctxt->state;
155
struct grub_serial_port *port;
156
struct grub_serial_config config;
161
grub_snprintf (pname, sizeof (pname), "com%ld",
162
grub_strtoul (state[0].arg, 0, 0));
168
grub_snprintf (pname, sizeof (pname), "port%lx",
169
grub_strtoul (state[1].arg, 0, 0));
179
port = grub_serial_find (name);
181
return grub_error (GRUB_ERR_BAD_ARGUMENT, "unknown serial port");
183
config = port->config;
186
config.speed = grub_strtoul (state[2].arg, 0, 0);
189
config.word_len = grub_strtoul (state[3].arg, 0, 0);
193
if (! grub_strcmp (state[4].arg, "no"))
194
config.parity = GRUB_SERIAL_PARITY_NONE;
195
else if (! grub_strcmp (state[4].arg, "odd"))
196
config.parity = GRUB_SERIAL_PARITY_ODD;
197
else if (! grub_strcmp (state[4].arg, "even"))
198
config.parity = GRUB_SERIAL_PARITY_EVEN;
200
return grub_error (GRUB_ERR_BAD_ARGUMENT, "bad parity");
205
if (! grub_strcmp (state[5].arg, "1"))
206
config.stop_bits = GRUB_SERIAL_STOP_BITS_1;
207
else if (! grub_strcmp (state[5].arg, "2"))
208
config.stop_bits = GRUB_SERIAL_STOP_BITS_2;
210
return grub_error (GRUB_ERR_BAD_ARGUMENT, "bad number of stop bits");
213
/* Initialize with new settings. */
214
err = port->driver->configure (port, &config);
217
#ifndef GRUB_MACHINE_EMU
218
/* Compatibility kludge. */
219
if (port->driver == &grub_ns8250_driver)
223
grub_terminfo_output_register (&grub_serial_term_output, "vt100");
225
grub_term_register_input ("serial", &grub_serial_term_input);
226
grub_term_register_output ("serial", &grub_serial_term_output);
228
grub_serial_terminfo_output.port = port;
229
grub_serial_terminfo_input.port = port;
233
return GRUB_ERR_NONE;
237
grub_serial_register (struct grub_serial_port *port)
239
struct grub_term_input *in;
240
struct grub_term_output *out;
241
struct grub_serial_input_state *indata;
242
struct grub_serial_output_state *outdata;
244
in = grub_malloc (sizeof (*in));
248
indata = grub_malloc (sizeof (*indata));
255
grub_memcpy (in, &grub_serial_term_input, sizeof (*in));
257
in->name = grub_xasprintf ("serial_%s", port->name);
258
grub_memcpy (indata, &grub_serial_terminfo_input, sizeof (*indata));
267
out = grub_malloc (sizeof (*out));
272
grub_free ((char *) in->name);
276
outdata = grub_malloc (sizeof (*outdata));
281
grub_free ((char *) in->name);
286
grub_memcpy (out, &grub_serial_term_output, sizeof (*out));
288
out->name = in->name;
289
grub_memcpy (outdata, &grub_serial_terminfo_output, sizeof (*outdata));
291
grub_list_push (GRUB_AS_LIST_P (&grub_serial_ports), GRUB_AS_LIST (port));
292
((struct grub_serial_input_state *) in->data)->port = port;
293
((struct grub_serial_output_state *) out->data)->port = port;
295
port->term_out = out;
296
grub_terminfo_output_register (out, "vt100");
297
#ifdef GRUB_MACHINE_MIPS_YEELOONG
298
if (grub_strcmp (port->name, "com0") == 0)
300
grub_term_register_input_active ("serial_*", in);
301
grub_term_register_output_active ("serial_*", out);
306
grub_term_register_input ("serial_*", in);
307
grub_term_register_output ("serial_*", out);
310
return GRUB_ERR_NONE;
314
grub_serial_unregister (struct grub_serial_port *port)
316
if (port->driver->fini)
317
port->driver->fini (port);
320
grub_term_unregister_input (port->term_in);
322
grub_term_unregister_output (port->term_out);
324
grub_list_remove (GRUB_AS_LIST_P (&grub_serial_ports), GRUB_AS_LIST (port));
328
grub_serial_unregister_driver (struct grub_serial_driver *driver)
330
struct grub_serial_port *port, *next;
331
for (port = grub_serial_ports; port; port = next)
334
if (port->driver == driver)
335
grub_serial_unregister (port);
339
static grub_extcmd_t cmd;
341
GRUB_MOD_INIT(serial)
343
cmd = grub_register_extcmd ("serial", grub_cmd_serial, 0,
345
N_("Configure serial port."), options);
346
grub_memcpy (&grub_serial_terminfo_output,
347
&grub_serial_terminfo_output_template,
348
sizeof (grub_serial_terminfo_output));
350
grub_memcpy (&grub_serial_terminfo_input,
351
&grub_serial_terminfo_input_template,
352
sizeof (grub_serial_terminfo_input));
354
#ifndef GRUB_MACHINE_EMU
359
GRUB_MOD_FINI(serial)
361
while (grub_serial_ports)
362
grub_serial_unregister (grub_serial_ports);
365
grub_term_unregister_input (&grub_serial_term_input);
366
grub_term_unregister_output (&grub_serial_term_output);
368
grub_unregister_extcmd (cmd);