arch/all-pc/boot/grub2-aros/grub-core/term/ieee1275/console.c

   1 /*  console.c -- Open Firmware console for GRUB.  */
   2 /*
   3  *  GRUB  --  GRand Unified Bootloader
   4  *  Copyright (C) 2003,2004,2005,2007,2008,2009  Free Software Foundation, Inc.
   5  *
   6  *  GRUB is free software: you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation, either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  GRUB is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <grub/term.h>
  21 #include <grub/types.h>
  22 #include <grub/misc.h>
  23 #include <grub/mm.h>
  24 #include <grub/time.h>
  25 #include <grub/terminfo.h>
  26 #include <grub/ieee1275/console.h>
  27 #include <grub/ieee1275/ieee1275.h>
  28
  29 static grub_ieee1275_ihandle_t stdout_ihandle;
  30 static grub_ieee1275_ihandle_t stdin_ihandle;
  31
  32 extern struct grub_terminfo_output_state grub_console_terminfo_output;
  33
  34 struct color
  35 {
  36   int red;
  37   int green;
  38   int blue;
  39 };
  40
  41 /* Use serial colors as they are default on most firmwares and some firmwares
  42    ignore set-color!. Additionally output may be redirected to serial.  */
  43 static struct color colors[] =
  44   {
  45     // {R, G, B}
  46     {0x00, 0x00, 0x00}, // 0 = black
  47     {0xA8, 0x00, 0x00}, // 1 = red
  48     {0x00, 0xA8, 0x00}, // 2 = green
  49     {0xFE, 0xFE, 0x54}, // 3 = yellow
  50     {0x00, 0x00, 0xA8}, // 4 = blue
  51     {0xA8, 0x00, 0xA8}, // 5 = magenta
  52     {0x00, 0xA8, 0xA8}, // 6 = cyan
  53     {0xFE, 0xFE, 0xFE}  // 7 = white
  54   };
  55
  56 static void
  57 put (struct grub_term_output *term __attribute__ ((unused)), const int c)
  58 {
  59   char chr = c;
  60
  61   grub_ieee1275_write (stdout_ihandle, &chr, 1, 0);
  62 }
  63
  64 static int
  65 readkey (struct grub_term_input *term __attribute__ ((unused)))
  66 {
  67   grub_uint8_t c;
  68   grub_ssize_t actual = 0;
  69
  70   grub_ieee1275_read (stdin_ihandle, &c, 1, &actual);
  71   if (actual > 0)
  72     return c;
  73   return -1;
  74 }
  75
  76 static void
  77 grub_console_dimensions (void)
  78 {
  79   grub_ieee1275_ihandle_t options;
  80   grub_ieee1275_phandle_t stdout_phandle;
  81   char val[1024];
  82
  83   /* Always assume 80x24 on serial since screen-#rows/screen-#columns is often
  84      garbage for such devices.  */
  85   if (! grub_ieee1275_instance_to_package (stdout_ihandle,
  86                                            &stdout_phandle)
  87       && ! grub_ieee1275_package_to_path (stdout_phandle,
  88                                           val, sizeof (val) - 1, 0))
  89     {
  90       grub_ieee1275_ihandle_t stdout_options;
  91       val[sizeof (val) - 1] = 0;
  92
  93       if (! grub_ieee1275_finddevice (val, &stdout_options)
  94           && ! grub_ieee1275_get_property (stdout_options, "device_type",
  95                                            val, sizeof (val) - 1, 0))
  96         {
  97           val[sizeof (val) - 1] = 0;
  98           if (grub_strcmp (val, "serial") == 0)
  99             {
 100               grub_console_terminfo_output.width = 80;
 101               grub_console_terminfo_output.height = 24;
 102               return;
 103             }
 104         }
 105     }
 106
 107   if (! grub_ieee1275_finddevice ("/options", &options)
 108       && options != (grub_ieee1275_ihandle_t) -1)
 109     {
 110       if (! grub_ieee1275_get_property (options, "screen-#columns",
 111                                         val, sizeof (val) - 1, 0))
 112         {
 113           val[sizeof (val) - 1] = 0;
 114           grub_console_terminfo_output.width
 115             = (grub_uint8_t) grub_strtoul (val, 0, 10);
 116         }
 117       if (! grub_ieee1275_get_property (options, "screen-#rows",
 118                                         val, sizeof (val) - 1, 0))
 119         {
 120           val[sizeof (val) - 1] = 0;
 121           grub_console_terminfo_output.height
 122             = (grub_uint8_t) grub_strtoul (val, 0, 10);
 123         }
 124     }
 125
 126   /* Use a small console by default.  */
 127   if (! grub_console_terminfo_output.width)
 128     grub_console_terminfo_output.width = 80;
 129   if (! grub_console_terminfo_output.height)
 130     grub_console_terminfo_output.height = 24;
 131 }
 132
 133 static void
 134 grub_console_setcursor (struct grub_term_output *term,
 135                           int on)
 136 {
 137   grub_terminfo_setcursor (term, on);
 138
 139   if (!grub_ieee1275_test_flag (GRUB_IEEE1275_FLAG_HAS_CURSORONOFF))
 140     return;
 141
 142   /* Understood by the Open Firmware flavour in OLPC.  */
 143   if (on)
 144     grub_ieee1275_interpret ("cursor-on", 0);
 145   else
 146     grub_ieee1275_interpret ("cursor-off", 0);
 147 }
 148
 149 static grub_err_t
 150 grub_console_init_input (struct grub_term_input *term)
 151 {
 152   grub_ssize_t actual;
 153
 154   if (grub_ieee1275_get_integer_property (grub_ieee1275_chosen, "stdin", &stdin_ihandle,
 155                                           sizeof stdin_ihandle, &actual)
 156       || actual != sizeof stdin_ihandle)
 157     return grub_error (GRUB_ERR_UNKNOWN_DEVICE, "cannot find stdin");
 158
 159   return grub_terminfo_input_init (term);
 160 }
 161
 162 static grub_err_t
 163 grub_console_init_output (struct grub_term_output *term)
 164 {
 165   grub_ssize_t actual;
 166
 167   /* The latest PowerMacs don't actually initialize the screen for us, so we
 168    * use this trick to re-open the output device (but we avoid doing this on
 169    * platforms where it's known to be broken). */
 170   if (! grub_ieee1275_test_flag (GRUB_IEEE1275_FLAG_BROKEN_OUTPUT))
 171     grub_ieee1275_interpret ("output-device output", 0);
 172
 173   if (grub_ieee1275_get_integer_property (grub_ieee1275_chosen, "stdout", &stdout_ihandle,
 174                                           sizeof stdout_ihandle, &actual)
 175       || actual != sizeof stdout_ihandle)
 176     return grub_error (GRUB_ERR_UNKNOWN_DEVICE, "cannot find stdout");
 177
 178   /* Initialize colors.  */
 179   if (! grub_ieee1275_test_flag (GRUB_IEEE1275_FLAG_CANNOT_SET_COLORS))
 180     {
 181       unsigned col;
 182       for (col = 0; col < ARRAY_SIZE (colors); col++)
 183         grub_ieee1275_set_color (stdout_ihandle, col, colors[col].red,
 184                                  colors[col].green, colors[col].blue);
 185
 186       /* Set the right fg and bg colors.  */
 187       grub_terminfo_setcolorstate (term, GRUB_TERM_COLOR_NORMAL);
 188     }
 189
 190   grub_console_dimensions ();
 191
 192   grub_terminfo_output_init (term);
 193
 194   return 0;
 195 }
 196
 197 \f
 198
 199 struct grub_terminfo_input_state grub_console_terminfo_input =
 200   {
 201     .readkey = readkey
 202   };
 203
 204 struct grub_terminfo_output_state grub_console_terminfo_output =
 205   {
 206     .put = put,
 207     .width = 80,
 208     .height = 24
 209   };
 210
 211 static struct grub_term_input grub_console_term_input =
 212   {
 213     .name = "console",
 214     .init = grub_console_init_input,
 215     .getkey = grub_terminfo_getkey,
 216     .data = &grub_console_terminfo_input
 217   };
 218
 219 static struct grub_term_output grub_console_term_output =
 220   {
 221     .name = "console",
 222     .init = grub_console_init_output,
 223     .putchar = grub_terminfo_putchar,
 224     .getxy = grub_terminfo_getxy,
 225     .getwh = grub_terminfo_getwh,
 226     .gotoxy = grub_terminfo_gotoxy,
 227     .cls = grub_terminfo_cls,
 228     .setcolorstate = grub_terminfo_setcolorstate,
 229     .setcursor = grub_console_setcursor,
 230     .flags = GRUB_TERM_CODE_TYPE_ASCII,
 231     .data = &grub_console_terminfo_output,
 232     .normal_color = GRUB_TERM_DEFAULT_NORMAL_COLOR,
 233     .highlight_color = GRUB_TERM_DEFAULT_HIGHLIGHT_COLOR,
 234   };
 235
 236 void
 237 grub_console_init_early (void)
 238 {
 239   grub_term_register_input ("console", &grub_console_term_input);
 240   grub_term_register_output ("console", &grub_console_term_output);
 241 }
 242
 243 void
 244 grub_console_init_lately (void)
 245 {
 246   const char *type;
 247
 248   if (grub_ieee1275_test_flag (GRUB_IEEE1275_FLAG_NO_ANSI))
 249     type = "dumb";
 250   else
 251     type = "ieee1275";
 252
 253   grub_terminfo_init ();
 254   grub_terminfo_output_register (&grub_console_term_output, type);
 255 }
 256
 257 void
 258 grub_console_fini (void)
 259 {
 260 }