245 lines
6.6 KiB
C
245 lines
6.6 KiB
C
/* ofconsole.c -- Open Firmware console for GRUB. */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2003,2004,2005,2007,2008,2009 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/term.h>
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#include <grub/types.h>
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#include <grub/misc.h>
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#include <grub/mm.h>
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#include <grub/time.h>
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#include <grub/terminfo.h>
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#include <grub/ieee1275/console.h>
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#include <grub/ieee1275/ieee1275.h>
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static grub_ieee1275_ihandle_t stdout_ihandle;
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static grub_ieee1275_ihandle_t stdin_ihandle;
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static grub_uint8_t grub_ofconsole_width;
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static grub_uint8_t grub_ofconsole_height;
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struct color
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{
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int red;
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int green;
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int blue;
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};
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/* Use serial colors as they are default on most firmwares and some firmwares
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ignore set-color!. Additionally output may be redirected to serial. */
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static struct color colors[] =
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{
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// {R, G, B}
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{0x00, 0x00, 0x00}, // 0 = black
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{0xA8, 0x00, 0x00}, // 1 = red
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{0x00, 0xA8, 0x00}, // 2 = green
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{0xFE, 0xFE, 0x54}, // 3 = yellow
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{0x00, 0x00, 0xA8}, // 4 = blue
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{0xA8, 0x00, 0xA8}, // 5 = magenta
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{0x00, 0xA8, 0xA8}, // 6 = cyan
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{0xFE, 0xFE, 0xFE} // 7 = white
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};
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static void
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put (const int c)
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{
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char chr = c;
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grub_ieee1275_write (stdout_ihandle, &chr, 1, 0);
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}
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static int
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readkey (void)
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{
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grub_uint8_t c;
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grub_ssize_t actual = 0;
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grub_ieee1275_read (stdin_ihandle, &c, 1, &actual);
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if (actual > 0)
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return c;
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return -1;
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}
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static void
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grub_ofconsole_dimensions (void)
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{
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grub_ieee1275_ihandle_t options;
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grub_ssize_t lval;
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if (! grub_ieee1275_finddevice ("/options", &options)
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&& options != (grub_ieee1275_ihandle_t) -1)
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{
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if (! grub_ieee1275_get_property_length (options, "screen-#columns",
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&lval)
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&& lval >= 0 && lval < 1024)
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{
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char val[lval];
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if (! grub_ieee1275_get_property (options, "screen-#columns",
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val, lval, 0))
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grub_ofconsole_width = (grub_uint8_t) grub_strtoul (val, 0, 10);
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}
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if (! grub_ieee1275_get_property_length (options, "screen-#rows", &lval)
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&& lval >= 0 && lval < 1024)
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{
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char val[lval];
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if (! grub_ieee1275_get_property (options, "screen-#rows",
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val, lval, 0))
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grub_ofconsole_height = (grub_uint8_t) grub_strtoul (val, 0, 10);
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}
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}
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/* Use a small console by default. */
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if (! grub_ofconsole_width)
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grub_ofconsole_width = 80;
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if (! grub_ofconsole_height)
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grub_ofconsole_height = 24;
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}
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static grub_uint16_t
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grub_ofconsole_getwh (struct grub_term_output *term __attribute__ ((unused)))
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{
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return (grub_ofconsole_width << 8) | grub_ofconsole_height;
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}
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static void
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grub_ofconsole_setcursor (struct grub_term_output *term __attribute__ ((unused)),
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int on)
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{
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/* Understood by the Open Firmware flavour in OLPC. */
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if (on)
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grub_ieee1275_interpret ("cursor-on", 0);
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else
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grub_ieee1275_interpret ("cursor-off", 0);
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}
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static grub_err_t
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grub_ofconsole_init_input (struct grub_term_input *term)
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{
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grub_ssize_t actual;
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if (grub_ieee1275_get_integer_property (grub_ieee1275_chosen, "stdin", &stdin_ihandle,
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sizeof stdin_ihandle, &actual)
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|| actual != sizeof stdin_ihandle)
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return grub_error (GRUB_ERR_UNKNOWN_DEVICE, "cannot find stdin");
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return grub_terminfo_input_init (term);
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}
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static grub_err_t
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grub_ofconsole_init_output (struct grub_term_output *term)
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{
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grub_ssize_t actual;
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/* The latest PowerMacs don't actually initialize the screen for us, so we
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* use this trick to re-open the output device (but we avoid doing this on
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* platforms where it's known to be broken). */
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if (! grub_ieee1275_test_flag (GRUB_IEEE1275_FLAG_BROKEN_OUTPUT))
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grub_ieee1275_interpret ("output-device output", 0);
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if (grub_ieee1275_get_integer_property (grub_ieee1275_chosen, "stdout", &stdout_ihandle,
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sizeof stdout_ihandle, &actual)
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|| actual != sizeof stdout_ihandle)
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return grub_error (GRUB_ERR_UNKNOWN_DEVICE, "cannot find stdout");
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/* Initialize colors. */
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if (! grub_ieee1275_test_flag (GRUB_IEEE1275_FLAG_CANNOT_SET_COLORS))
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{
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unsigned col;
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for (col = 0; col < ARRAY_SIZE (colors); col++)
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grub_ieee1275_set_color (stdout_ihandle, col, colors[col].red,
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colors[col].green, colors[col].blue);
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/* Set the right fg and bg colors. */
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grub_terminfo_setcolorstate (term, GRUB_TERM_COLOR_NORMAL);
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}
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grub_ofconsole_dimensions ();
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return 0;
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}
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struct grub_terminfo_input_state grub_ofconsole_terminfo_input =
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{
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.readkey = readkey
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};
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struct grub_terminfo_output_state grub_ofconsole_terminfo_output =
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{
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.put = put
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};
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static struct grub_term_input grub_ofconsole_term_input =
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{
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.name = "ofconsole",
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.init = grub_ofconsole_init_input,
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.getkey = grub_terminfo_getkey,
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.data = &grub_ofconsole_terminfo_input
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};
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static struct grub_term_output grub_ofconsole_term_output =
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{
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.name = "ofconsole",
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.init = grub_ofconsole_init_output,
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.putchar = grub_terminfo_putchar,
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.getxy = grub_terminfo_getxy,
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.getwh = grub_ofconsole_getwh,
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.gotoxy = grub_terminfo_gotoxy,
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.cls = grub_terminfo_cls,
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.setcolorstate = grub_terminfo_setcolorstate,
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.setcursor = grub_ofconsole_setcursor,
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.flags = GRUB_TERM_CODE_TYPE_ASCII,
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.data = &grub_ofconsole_terminfo_output,
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.normal_color = GRUB_TERM_DEFAULT_NORMAL_COLOR,
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.highlight_color = GRUB_TERM_DEFAULT_HIGHLIGHT_COLOR,
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};
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void grub_terminfo_fini (void);
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void grub_terminfo_init (void);
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void
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grub_console_init_early (void)
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{
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grub_term_register_input ("ofconsole", &grub_ofconsole_term_input);
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grub_term_register_output ("ofconsole", &grub_ofconsole_term_output);
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}
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void
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grub_console_init_lately (void)
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{
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const char *type;
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if (grub_ieee1275_test_flag (GRUB_IEEE1275_FLAG_NO_ANSI))
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type = "dumb";
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else
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type = "ieee1275";
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grub_terminfo_init ();
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grub_terminfo_output_register (&grub_ofconsole_term_output, type);
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}
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void
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grub_console_fini (void)
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{
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grub_term_unregister_input (&grub_ofconsole_term_input);
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grub_term_unregister_output (&grub_ofconsole_term_output);
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grub_terminfo_output_unregister (&grub_ofconsole_term_output);
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grub_terminfo_fini ();
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}
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