iPXE
bios_console.c
Go to the documentation of this file.
1 /*
2  * Copyright (C) 2006 Michael Brown <mbrown@fensystems.co.uk>.
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License as
6  * published by the Free Software Foundation; either version 2 of the
7  * License, or any later version.
8  *
9  * This program is distributed in the hope that it will be useful, but
10  * WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
17  * 02110-1301, USA.
18  *
19  * You can also choose to distribute this program under the terms of
20  * the Unmodified Binary Distribution Licence (as given in the file
21  * COPYING.UBDL), provided that you have satisfied its requirements.
22  */
23 
24 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
25 
26 #include <assert.h>
27 #include <realmode.h>
28 #include <bios.h>
29 #include <biosint.h>
30 #include <ipxe/console.h>
31 #include <ipxe/ansiesc.h>
32 #include <ipxe/keys.h>
33 #include <ipxe/keymap.h>
34 #include <ipxe/init.h>
35 #include <config/console.h>
36 
37 #define ATTR_BOLD 0x08
38 
39 #define ATTR_FCOL_MASK 0x07
40 #define ATTR_FCOL_BLACK 0x00
41 #define ATTR_FCOL_BLUE 0x01
42 #define ATTR_FCOL_GREEN 0x02
43 #define ATTR_FCOL_CYAN 0x03
44 #define ATTR_FCOL_RED 0x04
45 #define ATTR_FCOL_MAGENTA 0x05
46 #define ATTR_FCOL_YELLOW 0x06
47 #define ATTR_FCOL_WHITE 0x07
48 
49 #define ATTR_BLINK 0x80
50 
51 #define ATTR_BCOL_MASK 0x70
52 #define ATTR_BCOL_BLACK 0x00
53 #define ATTR_BCOL_BLUE 0x10
54 #define ATTR_BCOL_GREEN 0x20
55 #define ATTR_BCOL_CYAN 0x30
56 #define ATTR_BCOL_RED 0x40
57 #define ATTR_BCOL_MAGENTA 0x50
58 #define ATTR_BCOL_YELLOW 0x60
59 #define ATTR_BCOL_WHITE 0x70
60 
61 #define ATTR_DEFAULT ATTR_FCOL_WHITE
62 
63 /* Set default console usage if applicable */
64 #if ! ( defined ( CONSOLE_PCBIOS ) && CONSOLE_EXPLICIT ( CONSOLE_PCBIOS ) )
65 #undef CONSOLE_PCBIOS
66 #define CONSOLE_PCBIOS ( CONSOLE_USAGE_ALL & ~CONSOLE_USAGE_LOG )
67 #endif
68 
69 /** Current character attribute */
70 static unsigned int bios_attr = ATTR_DEFAULT;
71 
72 /** Keypress injection lock */
74 #define bios_inject_lock __use_text16 ( bios_inject_lock )
75 
76 /** Vector for chaining to other INT 16 handlers */
77 static struct segoff __text16 ( int16_vector );
78 #define int16_vector __use_text16 ( int16_vector )
79 
80 /** Assembly wrapper */
81 extern void int16_wrapper ( void );
82 
83 /**
84  * Handle ANSI CUP (cursor position)
85  *
86  * @v ctx ANSI escape sequence context
87  * @v count Parameter count
88  * @v params[0] Row (1 is top)
89  * @v params[1] Column (1 is left)
90  */
92  unsigned int count __unused, int params[] ) {
93  int cx = ( params[1] - 1 );
94  int cy = ( params[0] - 1 );
95 
96  if ( cx < 0 )
97  cx = 0;
98  if ( cy < 0 )
99  cy = 0;
100 
101  __asm__ __volatile__ ( REAL_CODE ( "int $0x10\n\t" )
102  : : "a" ( 0x0200 ), "b" ( 1 ),
103  "d" ( ( cy << 8 ) | cx ) );
104 }
105 
106 /**
107  * Handle ANSI ED (erase in page)
108  *
109  * @v ctx ANSI escape sequence context
110  * @v count Parameter count
111  * @v params[0] Region to erase
112  */
114  unsigned int count __unused,
115  int params[] __unused ) {
116  /* We assume that we always clear the whole screen */
117  assert ( params[0] == ANSIESC_ED_ALL );
118 
119  __asm__ __volatile__ ( REAL_CODE ( "int $0x10\n\t" )
120  : : "a" ( 0x0600 ), "b" ( bios_attr << 8 ),
121  "c" ( 0 ),
122  "d" ( ( ( console_height - 1 ) << 8 ) |
123  ( console_width - 1 ) ) );
124 }
125 
126 /**
127  * Handle ANSI SGR (set graphics rendition)
128  *
129  * @v ctx ANSI escape sequence context
130  * @v count Parameter count
131  * @v params List of graphic rendition aspects
132  */
134  unsigned int count, int params[] ) {
135  static const uint8_t bios_attr_fcols[10] = {
139  ATTR_FCOL_WHITE, ATTR_FCOL_WHITE /* defaults */
140  };
141  static const uint8_t bios_attr_bcols[10] = {
145  ATTR_BCOL_BLACK, ATTR_BCOL_BLACK /* defaults */
146  };
147  unsigned int i;
148  int aspect;
149 
150  for ( i = 0 ; i < count ; i++ ) {
151  aspect = params[i];
152  if ( aspect == 0 ) {
154  } else if ( aspect == 1 ) {
155  bios_attr |= ATTR_BOLD;
156  } else if ( aspect == 5 ) {
158  } else if ( aspect == 22 ) {
159  bios_attr &= ~ATTR_BOLD;
160  } else if ( aspect == 25 ) {
161  bios_attr &= ~ATTR_BLINK;
162  } else if ( ( aspect >= 30 ) && ( aspect <= 39 ) ) {
164  bios_attr |= bios_attr_fcols[ aspect - 30 ];
165  } else if ( ( aspect >= 40 ) && ( aspect <= 49 ) ) {
167  bios_attr |= bios_attr_bcols[ aspect - 40 ];
168  }
169  }
170 }
171 
172 /**
173  * Handle ANSI DECTCEM set (show cursor)
174  *
175  * @v ctx ANSI escape sequence context
176  * @v count Parameter count
177  * @v params List of graphic rendition aspects
178  */
180  unsigned int count __unused,
181  int params[] __unused ) {
182  uint8_t height;
183 
184  /* Get character height */
185  get_real ( height, BDA_SEG, BDA_CHAR_HEIGHT );
186 
187  __asm__ __volatile__ ( REAL_CODE ( "int $0x10\n\t" )
188  : : "a" ( 0x0100 ),
189  "c" ( ( ( height - 2 ) << 8 ) |
190  ( height - 1 ) ) );
191 }
192 
193 /**
194  * Handle ANSI DECTCEM reset (hide cursor)
195  *
196  * @v ctx ANSI escape sequence context
197  * @v count Parameter count
198  * @v params List of graphic rendition aspects
199  */
201  unsigned int count __unused,
202  int params[] __unused ) {
203 
204  __asm__ __volatile__ ( REAL_CODE ( "int $0x10\n\t" )
205  : : "a" ( 0x0100 ), "c" ( 0x2000 ) );
206 }
207 
208 /** BIOS console ANSI escape sequence handlers */
215  { 0, NULL }
216 };
217 
218 /** BIOS console ANSI escape sequence context */
221 };
222 
223 /**
224  * Print a character to BIOS console
225  *
226  * @v character Character to be printed
227  */
228 static void bios_putchar ( int character ) {
229  int discard_a, discard_b, discard_c;
230 
231  /* Intercept ANSI escape sequences */
232  character = ansiesc_process ( &bios_ansiesc_ctx, character );
233  if ( character < 0 )
234  return;
235 
236  /* Print character with attribute */
237  __asm__ __volatile__ ( REAL_CODE ( "pushl %%ebp\n\t" /* gcc bug */
238  /* Skip non-printable characters */
239  "cmpb $0x20, %%al\n\t"
240  "jb 1f\n\t"
241  /* Read attribute */
242  "movb %%al, %%cl\n\t"
243  "movb $0x08, %%ah\n\t"
244  "int $0x10\n\t"
245  "xchgb %%al, %%cl\n\t"
246  /* Skip if attribute matches */
247  "cmpb %%ah, %%bl\n\t"
248  "je 1f\n\t"
249  /* Set attribute */
250  "movw $0x0001, %%cx\n\t"
251  "movb $0x09, %%ah\n\t"
252  "int $0x10\n\t"
253  "\n1:\n\t"
254  /* Print character */
255  "xorw %%bx, %%bx\n\t"
256  "movb $0x0e, %%ah\n\t"
257  "int $0x10\n\t"
258  "popl %%ebp\n\t" /* gcc bug */ )
259  : "=a" ( discard_a ), "=b" ( discard_b ),
260  "=c" ( discard_c )
261  : "a" ( character ), "b" ( bios_attr ) );
262 }
263 
264 /**
265  * Pointer to current ANSI output sequence
266  *
267  * While we are in the middle of returning an ANSI sequence for a
268  * special key, this will point to the next character to return. When
269  * not in the middle of such a sequence, this will point to a NUL
270  * (note: not "will be NULL").
271  */
272 static const char *bios_ansi_input = "";
273 
274 /** A BIOS key */
275 struct bios_key {
276  /** Scancode */
278  /** Key code */
280 } __attribute__ (( packed ));
281 
282 /** Mapping from BIOS scan codes to iPXE key codes */
283 static const struct bios_key bios_keys[] = {
284  { 0x53, KEY_DC },
285  { 0x48, KEY_UP },
286  { 0x50, KEY_DOWN },
287  { 0x4b, KEY_LEFT },
288  { 0x4d, KEY_RIGHT },
289  { 0x47, KEY_HOME },
290  { 0x4f, KEY_END },
291  { 0x49, KEY_PPAGE },
292  { 0x51, KEY_NPAGE },
293  { 0x3f, KEY_F5 },
294  { 0x40, KEY_F6 },
295  { 0x41, KEY_F7 },
296  { 0x42, KEY_F8 },
297  { 0x43, KEY_F9 },
298  { 0x44, KEY_F10 },
299  { 0x85, KEY_F11 },
300  { 0x86, KEY_F12 },
301 };
302 
303 /**
304  * Get ANSI escape sequence corresponding to BIOS scancode
305  *
306  * @v scancode BIOS scancode
307  * @ret ansi_seq ANSI escape sequence, if any, otherwise NULL
308  */
309 static const char * bios_ansi_seq ( unsigned int scancode ) {
310  static char buf[ 5 /* "[" + two digits + terminator + NUL */ ];
311  unsigned int key;
312  unsigned int terminator;
313  unsigned int n;
314  unsigned int i;
315  char *tmp = buf;
316 
317  /* Construct ANSI escape sequence for scancode, if known */
318  for ( i = 0 ; i < ( sizeof ( bios_keys ) /
319  sizeof ( bios_keys[0] ) ) ; i++ ) {
320 
321  /* Look for matching scancode */
322  if ( bios_keys[i].scancode != scancode )
323  continue;
324 
325  /* Construct escape sequence */
326  key = bios_keys[i].key;
327  n = KEY_ANSI_N ( key );
329  *(tmp++) = '[';
330  if ( n )
331  tmp += sprintf ( tmp, "%d", n );
332  *(tmp++) = terminator;
333  *(tmp++) = '\0';
334  assert ( tmp <= &buf[ sizeof ( buf ) ] );
335  return buf;
336  }
337 
338  DBG ( "Unrecognised BIOS scancode %02x\n", scancode );
339  return NULL;
340 }
341 
342 /**
343  * Map a key
344  *
345  * @v character Character read from console
346  * @ret character Mapped character
347  */
348 static int bios_keymap ( unsigned int character ) {
349  struct key_mapping *mapping;
350 
351  for_each_table_entry ( mapping, KEYMAP ) {
352  if ( mapping->from == character )
353  return mapping->to;
354  }
355  return character;
356 }
357 
358 /**
359  * Get character from BIOS console
360  *
361  * @ret character Character read from console
362  */
363 static int bios_getchar ( void ) {
364  uint16_t keypress;
365  unsigned int character;
366  const char *ansi_seq;
367 
368  /* If we are mid-sequence, pass out the next byte */
369  if ( ( character = *bios_ansi_input ) ) {
370  bios_ansi_input++;
371  return character;
372  }
373 
374  /* Do nothing if injection is in progress */
375  if ( bios_inject_lock )
376  return 0;
377 
378  /* Read character from real BIOS console */
380  __asm__ __volatile__ ( REAL_CODE ( "sti\n\t"
381  "int $0x16\n\t"
382  "cli\n\t" )
383  : "=a" ( keypress )
384  : "a" ( 0x1000 ), "m" ( bios_inject_lock ) );
386  character = ( keypress & 0xff );
387 
388  /* If it's a normal character, just map and return it */
389  if ( character && ( character < 0x80 ) )
390  return bios_keymap ( character );
391 
392  /* Otherwise, check for a special key that we know about */
393  if ( ( ansi_seq = bios_ansi_seq ( keypress >> 8 ) ) ) {
394  /* Start of escape sequence: return ESC (0x1b) */
395  bios_ansi_input = ansi_seq;
396  return 0x1b;
397  }
398 
399  return 0;
400 }
401 
402 /**
403  * Check for character ready to read from BIOS console
404  *
405  * @ret True Character available to read
406  * @ret False No character available to read
407  */
408 static int bios_iskey ( void ) {
409  unsigned int discard_a;
410  unsigned int flags;
411 
412  /* If we are mid-sequence, we are always ready */
413  if ( *bios_ansi_input )
414  return 1;
415 
416  /* Do nothing if injection is in progress */
417  if ( bios_inject_lock )
418  return 0;
419 
420  /* Otherwise check the real BIOS console */
422  __asm__ __volatile__ ( REAL_CODE ( "sti\n\t"
423  "int $0x16\n\t"
424  "pushfw\n\t"
425  "popw %w0\n\t"
426  "cli\n\t" )
427  : "=R" ( flags ), "=a" ( discard_a )
428  : "a" ( 0x1100 ), "m" ( bios_inject_lock ) );
430  return ( ! ( flags & ZF ) );
431 }
432 
433 /** BIOS console */
436  .getchar = bios_getchar,
437  .iskey = bios_iskey,
438  .usage = CONSOLE_PCBIOS,
439 };
440 
441 /**
442  * Inject keypresses
443  *
444  * @v ix86 Registers as passed to INT 16
445  */
446 static __asmcall void bios_inject ( struct i386_all_regs *ix86 ) {
447  unsigned int discard_a;
448  unsigned int scancode;
449  unsigned int i;
450  uint16_t keypress;
451  int key;
452 
453  /* If this is a blocking call, then loop until the
454  * non-blocking variant of the call indicates that a keypress
455  * is available. Do this without acquiring the injection
456  * lock, so that injection may take place.
457  */
458  if ( ( ix86->regs.ah & ~0x10 ) == 0x00 ) {
459  __asm__ __volatile__ ( REAL_CODE ( "sti\n\t"
460  "\n1:\n\t"
461  "pushw %%ax\n\t"
462  "int $0x16\n\t"
463  "popw %%ax\n\t"
464  "jc 2f\n\t"
465  "jz 1b\n\t"
466  "\n2:\n\t"
467  "cli\n\t" )
468  : "=a" ( discard_a )
469  : "a" ( ix86->regs.eax | 0x0100 ),
470  "m" ( bios_inject_lock ) );
471  }
472 
473  /* Acquire injection lock */
475 
476  /* Check for keypresses */
477  if ( iskey() ) {
478 
479  /* Get key */
480  key = getkey ( 0 );
481 
482  /* Reverse internal CR->LF mapping */
483  if ( key == '\n' )
484  key = '\r';
485 
486  /* Convert to keypress */
487  keypress = ( ( key << 8 ) | key );
488 
489  /* Handle special keys */
490  if ( key >= KEY_MIN ) {
491  for ( i = 0 ; i < ( sizeof ( bios_keys ) /
492  sizeof ( bios_keys[0] ) ) ; i++ ) {
493  if ( bios_keys[i].key == key ) {
494  scancode = bios_keys[i].scancode;
495  keypress = ( scancode << 8 );
496  break;
497  }
498  }
499  }
500 
501  /* Inject keypress */
502  DBGC ( &bios_console, "BIOS injecting keypress %04x\n",
503  keypress );
504  __asm__ __volatile__ ( REAL_CODE ( "int $0x16\n\t" )
505  : "=a" ( discard_a )
506  : "a" ( 0x0500 ), "c" ( keypress ),
507  "m" ( bios_inject_lock ) );
508  }
509 
510  /* Release injection lock */
512 }
513 
514 /**
515  * Start up keypress injection
516  *
517  */
518 static void bios_inject_startup ( void ) {
519 
520  /* Assembly wrapper to call bios_inject() */
522  TEXT16_CODE ( "\nint16_wrapper:\n\t"
523  "pushfw\n\t"
524  "cmpb $0, %%cs:bios_inject_lock\n\t"
525  "jnz 1f\n\t"
527  "\n1:\n\t"
528  "popfw\n\t"
529  "ljmp *%%cs:int16_vector\n\t" ) : );
530 
531  /* Hook INT 16 */
533  &int16_vector );
534 }
535 
536 /**
537  * Shut down keypress injection
538  *
539  * @v booting System is shutting down for OS boot
540  */
541 static void bios_inject_shutdown ( int booting __unused ) {
542 
543  /* Unhook INT 16 */
545  &int16_vector );
546 }
547 
548 /** Keypress injection startup function */
549 struct startup_fn bios_inject_startup_fn __startup_fn ( STARTUP_NORMAL ) = {
550  .name = "bios_inject",
551  .startup = bios_inject_startup,
552  .shutdown = bios_inject_shutdown,
553 };
#define KEYMAP
Keyboard mapping table.
Definition: keymap.h:25
int getkey(unsigned long timeout)
Get single keypress.
Definition: getkey.c:71
struct startup_fn bios_inject_startup_fn __startup_fn(STARTUP_NORMAL)
Keypress injection startup function.
#define __attribute__(x)
Definition: compiler.h:10
#define STARTUP_NORMAL
Normal startup.
Definition: init.h:63
unsigned short uint16_t
Definition: stdint.h:11
A handler for an escape sequence.
Definition: ansiesc.h:34
Keyboard mappings.
#define ATTR_FCOL_BLACK
Definition: bios_console.c:40
FILE_LICENCE(GPL2_OR_LATER_OR_UBDL)
#define ATTR_FCOL_RED
Definition: bios_console.c:44
#define KEY_F6
F6.
Definition: keys.h:76
struct ansiesc_handler * handlers
Array of handlers.
Definition: ansiesc.h:79
unsigned int console_height
Console height.
Definition: console.c:17
struct console_driver bios_console __console_driver
BIOS console.
Definition: bios_console.c:434
#define KEY_F11
F11.
Definition: keys.h:81
#define VIRT_CALL(function)
Call C function from real-mode code.
Definition: librm.h:78
static void bios_handle_ed(struct ansiesc_context *ctx __unused, unsigned int count __unused, int params[] __unused)
Handle ANSI ED (erase in page)
Definition: bios_console.c:113
#define ATTR_BCOL_MASK
Definition: bios_console.c:51
#define CONSOLE_PCBIOS
Definition: bios_console.c:66
uint8_t from
Character read from keyboard.
Definition: keymap.h:19
#define KEY_F12
F12.
Definition: keys.h:82
static const char * bios_ansi_input
Pointer to current ANSI output sequence.
Definition: bios_console.c:272
A BIOS key.
Definition: bios_console.c:275
static void bios_inject_shutdown(int booting __unused)
Shut down keypress injection.
Definition: bios_console.c:541
#define sprintf(buf, fmt,...)
Write a formatted string to a buffer.
Definition: stdio.h:36
#define KEY_F8
F8 (for PXE)
Definition: keys.h:78
#define ATTR_BOLD
Definition: bios_console.c:37
#define get_real
Definition: libkir.h:151
uint8_t scancode
Scancode.
Definition: bios_console.c:277
#define DBGC(...)
Definition: compiler.h:505
static const char * bios_ansi_seq(unsigned int scancode)
Get ANSI escape sequence corresponding to BIOS scancode.
Definition: bios_console.c:309
#define ATTR_BCOL_YELLOW
Definition: bios_console.c:58
#define ATTR_BCOL_WHITE
Definition: bios_console.c:59
#define ZF
Definition: registers.h:184
ANSI escape sequence context.
Definition: ansiesc.h:73
#define KEY_NPAGE
Page down.
Definition: keys.h:74
#define KEY_ANSI_TERMINATOR(key)
Definition: keys.h:62
struct golan_eq_context ctx
Definition: CIB_PRM.h:28
#define ATTR_BCOL_GREEN
Definition: bios_console.c:54
uint32_t eax
Definition: registers.h:109
static void bios_inject_startup(void)
Start up keypress injection.
Definition: bios_console.c:518
unsigned long intptr_t
Definition: stdint.h:21
A full register dump.
Definition: registers.h:174
#define KEY_HOME
Home.
Definition: keys.h:70
static unsigned int bios_attr
Current character attribute.
Definition: bios_console.c:70
const char * name
Definition: init.h:42
#define KEY_F9
F9.
Definition: keys.h:79
#define ATTR_FCOL_GREEN
Definition: bios_console.c:42
uint16_t cx
Definition: registers.h:51
void hook_bios_interrupt(unsigned int interrupt, unsigned int handler, struct segoff *chain_vector)
Hook INT vector.
Definition: biosint.c:24
#define ANSIESC_ED
Erase in page.
Definition: ansiesc.h:106
static int bios_keymap(unsigned int character)
Map a key.
Definition: bios_console.c:348
int ansiesc_process(struct ansiesc_context *ctx, int c)
Process character that may be part of ANSI escape sequence.
Definition: ansiesc.c:74
#define KEY_DOWN
Down arrow.
Definition: keys.h:66
#define ANSIESC_ED_ALL
Erase whole page.
Definition: ansiesc.h:115
A startup/shutdown function.
Definition: init.h:41
int unhook_bios_interrupt(unsigned int interrupt, unsigned int handler, struct segoff *chain_vector)
Unhook INT vector.
Definition: biosint.c:69
#define ATTR_BLINK
Definition: bios_console.c:49
A keyboard mapping.
Definition: keymap.h:17
#define KEY_MIN
Definition: keys.h:64
#define KEY_UP
Up arrow.
Definition: keys.h:65
#define ANSIESC_CUP
Cursor position.
Definition: ansiesc.h:103
#define __asmcall
Declare a function with standard calling conventions.
Definition: compiler.h:12
#define ATTR_BCOL_BLACK
Definition: bios_console.c:52
void(* putchar)(int character)
Write a character to the console.
Definition: console.h:68
Assertions.
assert((readw(&hdr->flags) &(GTF_reading|GTF_writing))==0)
struct i386_regs regs
Definition: registers.h:176
#define BDA_CHAR_HEIGHT
Definition: bios.h:15
ANSI escape sequences.
static int bios_getchar(void)
Get character from BIOS console.
Definition: bios_console.c:363
#define ANSIESC_SGR
Select graphic rendition.
Definition: ansiesc.h:118
struct console_driver bios_console
Definition: vesafb.c:45
#define ATTR_DEFAULT
Definition: bios_console.c:61
#define ATTR_BCOL_MAGENTA
Definition: bios_console.c:57
User interaction.
#define ATTR_FCOL_MASK
Definition: bios_console.c:39
uint16_t key
Key code.
Definition: bios_console.c:279
uint8_t to
Character to be used instead.
Definition: keymap.h:21
static struct ansiesc_context bios_ansiesc_ctx
BIOS console ANSI escape sequence context.
Definition: bios_console.c:219
#define KEY_PPAGE
Page up.
Definition: keys.h:73
static __asmcall void bios_inject(struct i386_all_regs *ix86)
Inject keypresses.
Definition: bios_console.c:446
uint8_t ah
Definition: registers.h:106
static void bios_handle_dectcem_set(struct ansiesc_context *ctx __unused, unsigned int count __unused, int params[] __unused)
Handle ANSI DECTCEM set (show cursor)
Definition: bios_console.c:179
#define ATTR_BCOL_CYAN
Definition: bios_console.c:55
uint8_t * tmp
Definition: entropy.h:156
#define for_each_table_entry(pointer, table)
Iterate through all entries within a linker table.
Definition: tables.h:358
#define KEY_END
End.
Definition: keys.h:69
static void bios_putchar(int character)
Print a character to BIOS console.
Definition: bios_console.c:228
unsigned char uint8_t
Definition: stdint.h:10
#define ATTR_FCOL_BLUE
Definition: bios_console.c:41
#define ATTR_BCOL_BLUE
Definition: bios_console.c:53
static void bios_handle_dectcem_reset(struct ansiesc_context *ctx __unused, unsigned int count __unused, int params[] __unused)
Handle ANSI DECTCEM reset (hide cursor)
Definition: bios_console.c:200
#define bios_inject_lock
Definition: bios_console.c:74
#define BDA_SEG
Definition: bios.h:6
#define ATTR_FCOL_MAGENTA
Definition: bios_console.c:45
Console configuration.
__asm__ __volatile__("\n1:\n\t" "movb -1(%2,%1), %%al\n\t" "stosb\n\t" "loop 1b\n\t" "xorl %%eax, %%eax\n\t" "mov %3, %1\n\t" "rep stosb\n\t" :"=&D"(discard_D), "=&c"(discard_c) :"r"(data), "g"(pad_len), "0"(value0), "1"(len) :"eax")
#define ANSIESC_DECTCEM_RESET
Hide cursor.
Definition: ansiesc.h:131
#define KEY_DC
Delete.
Definition: keys.h:72
#define __unused
Declare a variable or data structure as unused.
Definition: compiler.h:573
#define KEY_ANSI_N(key)
Definition: keys.h:61
#define ANSIESC_DECTCEM_SET
Show cursor.
Definition: ansiesc.h:128
#define KEY_F10
F10.
Definition: keys.h:80
__asm__(".section \".rodata\", \"a\", " PROGBITS "\n\t" "\nprivate_key_data:\n\t" ".size private_key_data, ( . - private_key_data )\n\t" ".equ private_key_len, ( . - private_key_data )\n\t" ".previous\n\t")
static struct ansiesc_handler bios_ansiesc_handlers[]
BIOS console ANSI escape sequence handlers.
Definition: bios_console.c:209
static void bios_handle_sgr(struct ansiesc_context *ctx __unused, unsigned int count, int params[])
Handle ANSI SGR (set graphics rendition)
Definition: bios_console.c:133
static int bios_iskey(void)
Check for character ready to read from BIOS console.
Definition: bios_console.c:408
#define ATTR_FCOL_YELLOW
Definition: bios_console.c:46
Key definitions.
uint16_t count
Number of entries.
Definition: ena.h:22
#define KEY_RIGHT
Right arrow.
Definition: keys.h:67
#define ATTR_BCOL_RED
Definition: bios_console.c:56
void int16_wrapper(void)
Assembly wrapper.
#define KEY_F7
F7.
Definition: keys.h:77
long discard_c
Definition: bigint.h:30
unsigned int n
Definition: entropy.h:159
A console driver.
Definition: console.h:55
#define int16_vector
Definition: bios_console.c:78
#define DBG(...)
Print a debugging message.
Definition: compiler.h:498
#define ATTR_FCOL_WHITE
Definition: bios_console.c:47
struct eth_slow_terminator_tlv terminator
Terminator.
Definition: eth_slow.h:20
static uint8_t __text16(bios_inject_lock)
Keypress injection lock.
static void bios_handle_cup(struct ansiesc_context *ctx __unused, unsigned int count __unused, int params[])
Handle ANSI CUP (cursor position)
Definition: bios_console.c:91
#define REAL_CODE(asm_code_str)
Definition: libkir.h:226
#define NULL
NULL pointer (VOID *)
Definition: Base.h:362
#define ATTR_FCOL_CYAN
Definition: bios_console.c:43
int iskey(void)
Check for available input on any console.
Definition: console.c:127
#define KEY_LEFT
Left arrow.
Definition: keys.h:68
#define TEXT16_CODE(asm_code_str)
Definition: libkir.h:217
union @375 key
Sense key.
Definition: scsi.h:18
unsigned int console_width
Console width.
Definition: console.c:14
#define KEY_F5
F5.
Definition: keys.h:75
static const struct bios_key bios_keys[]
Mapping from BIOS scan codes to iPXE key codes.
Definition: bios_console.c:283
uint8_t flags
Flags.
Definition: ena.h:18