diff options
Diffstat (limited to 'grub-core/term/ieee1275/ofconsole.c')
| -rw-r--r-- | grub-core/term/ieee1275/ofconsole.c | 249 |
1 files changed, 249 insertions, 0 deletions
diff --git a/grub-core/term/ieee1275/ofconsole.c b/grub-core/term/ieee1275/ofconsole.c new file mode 100644 index 0000000..ab74f21 --- /dev/null +++ b/grub-core/term/ieee1275/ofconsole.c @@ -0,0 +1,249 @@ +/* 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 <http://www.gnu.org/licenses/>. + */ + +#include <grub/term.h> +#include <grub/types.h> +#include <grub/misc.h> +#include <grub/mm.h> +#include <grub/time.h> +#include <grub/terminfo.h> +#include <grub/ieee1275/console.h> +#include <grub/ieee1275/ieee1275.h> + +static grub_ieee1275_ihandle_t stdout_ihandle; +static grub_ieee1275_ihandle_t stdin_ihandle; + +extern struct grub_terminfo_output_state grub_ofconsole_terminfo_output; + +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 (struct grub_term_output *term __attribute__ ((unused)), const int c) +{ + char chr = c; + + grub_ieee1275_write (stdout_ihandle, &chr, 1, 0); +} + +static int +readkey (struct grub_term_input *term __attribute__ ((unused))) +{ + 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_terminfo_output.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_terminfo_output.height + = (grub_uint8_t) grub_strtoul (val, 0, 10); + } + } + + /* Use a small console by default. */ + if (! grub_ofconsole_terminfo_output.width) + grub_ofconsole_terminfo_output.width = 80; + if (! grub_ofconsole_terminfo_output.height) + grub_ofconsole_terminfo_output.height = 24; +} + +static void +grub_ofconsole_setcursor (struct grub_term_output *term, + int on) +{ + grub_terminfo_setcursor (term, on); + + if (!grub_ieee1275_test_flag (GRUB_IEEE1275_FLAG_HAS_CURSORONOFF)) + return; + + /* 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 (); + + grub_terminfo_output_init (term); + + return 0; +} + + + +struct grub_terminfo_input_state grub_ofconsole_terminfo_input = + { + .readkey = readkey + }; + +struct grub_terminfo_output_state grub_ofconsole_terminfo_output = + { + .put = put, + .width = 80, + .height = 24 + }; + +static struct grub_term_input grub_ofconsole_term_input = + { + .name = "ofconsole", + .init = grub_ofconsole_init_input, + .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_terminfo_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 (); +} |