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