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

   1 /*  ofconsole.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_ofconsole_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_ofconsole_dimensions (void)
  78 {
  79   grub_ieee1275_ihandle_t options;
  80   grub_ssize_t lval;
  81
  82   if (! grub_ieee1275_finddevice ("/options", &options)
  83       && options != (grub_ieee1275_ihandle_t) -1)
  84     {
  85       if (! grub_ieee1275_get_property_length (options, "screen-#columns",
  86                                                &lval)
  87           && lval >= 0 && lval < 1024)
  88         {
  89           char val[lval];
  90
  91           if (! grub_ieee1275_get_property (options, "screen-#columns",
  92                                             val, lval, 0))
  93             grub_ofconsole_terminfo_output.width
  94               = (grub_uint8_t) grub_strtoul (val, 0, 10);
  95         }
  96       if (! grub_ieee1275_get_property_length (options, "screen-#rows", &lval)
  97           && lval >= 0 && lval < 1024)
  98         {
  99           char val[lval];
 100           if (! grub_ieee1275_get_property (options, "screen-#rows",
 101                                             val, lval, 0))
 102             grub_ofconsole_terminfo_output.height
 103               = (grub_uint8_t) grub_strtoul (val, 0, 10);
 104         }
 105     }
 106
 107   /* Use a small console by default.  */
 108   if (! grub_ofconsole_terminfo_output.width)
 109     grub_ofconsole_terminfo_output.width = 80;
 110   if (! grub_ofconsole_terminfo_output.height)
 111     grub_ofconsole_terminfo_output.height = 24;
 112 }
 113
 114 static void
 115 grub_ofconsole_setcursor (struct grub_term_output *term,
 116                           int on)
 117 {
 118   grub_terminfo_setcursor (term, on);
 119
 120   if (!grub_ieee1275_test_flag (GRUB_IEEE1275_FLAG_HAS_CURSORONOFF))
 121     return;
 122
 123   /* Understood by the Open Firmware flavour in OLPC.  */
 124   if (on)
 125     grub_ieee1275_interpret ("cursor-on", 0);
 126   else
 127     grub_ieee1275_interpret ("cursor-off", 0);
 128 }
 129
 130 static grub_err_t
 131 grub_ofconsole_init_input (struct grub_term_input *term)
 132 {
 133   grub_ssize_t actual;
 134
 135   if (grub_ieee1275_get_integer_property (grub_ieee1275_chosen, "stdin", &stdin_ihandle,
 136                                           sizeof stdin_ihandle, &actual)
 137       || actual != sizeof stdin_ihandle)
 138     return grub_error (GRUB_ERR_UNKNOWN_DEVICE, "cannot find stdin");
 139
 140   return grub_terminfo_input_init (term);
 141 }
 142
 143 static grub_err_t
 144 grub_ofconsole_init_output (struct grub_term_output *term)
 145 {
 146   grub_ssize_t actual;
 147
 148   /* The latest PowerMacs don't actually initialize the screen for us, so we
 149    * use this trick to re-open the output device (but we avoid doing this on
 150    * platforms where it's known to be broken). */
 151   if (! grub_ieee1275_test_flag (GRUB_IEEE1275_FLAG_BROKEN_OUTPUT))
 152     grub_ieee1275_interpret ("output-device output", 0);
 153
 154   if (grub_ieee1275_get_integer_property (grub_ieee1275_chosen, "stdout", &stdout_ihandle,
 155                                           sizeof stdout_ihandle, &actual)
 156       || actual != sizeof stdout_ihandle)
 157     return grub_error (GRUB_ERR_UNKNOWN_DEVICE, "cannot find stdout");
 158
 159   /* Initialize colors.  */
 160   if (! grub_ieee1275_test_flag (GRUB_IEEE1275_FLAG_CANNOT_SET_COLORS))
 161     {
 162       unsigned col;
 163       for (col = 0; col < ARRAY_SIZE (colors); col++)
 164         grub_ieee1275_set_color (stdout_ihandle, col, colors[col].red,
 165                                  colors[col].green, colors[col].blue);
 166
 167       /* Set the right fg and bg colors.  */
 168       grub_terminfo_setcolorstate (term, GRUB_TERM_COLOR_NORMAL);
 169     }
 170
 171   grub_ofconsole_dimensions ();
 172
 173   grub_terminfo_output_init (term);
 174
 175   return 0;
 176 }
 177
 178 \f
 179
 180 struct grub_terminfo_input_state grub_ofconsole_terminfo_input =
 181   {
 182     .readkey = readkey
 183   };
 184
 185 struct grub_terminfo_output_state grub_ofconsole_terminfo_output =
 186   {
 187     .put = put,
 188     .width = 80,
 189     .height = 24
 190   };
 191
 192 static struct grub_term_input grub_ofconsole_term_input =
 193   {
 194     .name = "ofconsole",
 195     .init = grub_ofconsole_init_input,
 196     .getkey = grub_terminfo_getkey,
 197     .data = &grub_ofconsole_terminfo_input
 198   };
 199
 200 static struct grub_term_output grub_ofconsole_term_output =
 201   {
 202     .name = "ofconsole",
 203     .init = grub_ofconsole_init_output,
 204     .putchar = grub_terminfo_putchar,
 205     .getxy = grub_terminfo_getxy,
 206     .getwh = grub_terminfo_getwh,
 207     .gotoxy = grub_terminfo_gotoxy,
 208     .cls = grub_terminfo_cls,
 209     .setcolorstate = grub_terminfo_setcolorstate,
 210     .setcursor = grub_ofconsole_setcursor,
 211     .flags = GRUB_TERM_CODE_TYPE_ASCII,
 212     .data = &grub_ofconsole_terminfo_output,
 213     .normal_color = GRUB_TERM_DEFAULT_NORMAL_COLOR,
 214     .highlight_color = GRUB_TERM_DEFAULT_HIGHLIGHT_COLOR,
 215   };
 216
 217 void grub_terminfo_fini (void);
 218 void grub_terminfo_init (void);
 219
 220 void
 221 grub_console_init_early (void)
 222 {
 223   grub_term_register_input ("ofconsole", &grub_ofconsole_term_input);
 224   grub_term_register_output ("ofconsole", &grub_ofconsole_term_output);
 225 }
 226
 227 void
 228 grub_console_init_lately (void)
 229 {
 230   const char *type;
 231
 232   if (grub_ieee1275_test_flag (GRUB_IEEE1275_FLAG_NO_ANSI))
 233     type = "dumb";
 234   else
 235     type = "ieee1275";
 236
 237   grub_terminfo_init ();
 238   grub_terminfo_output_register (&grub_ofconsole_term_output, type);
 239 }
 240
 241 void
 242 grub_console_fini (void)
 243 {
 244   grub_term_unregister_input (&grub_ofconsole_term_input);
 245   grub_term_unregister_output (&grub_ofconsole_term_output);
 246   grub_terminfo_output_unregister (&grub_ofconsole_term_output);
 247
 248   grub_terminfo_fini ();
 249 }