diff options
Diffstat (limited to 'grub-core/commands/videoinfo.c')
| -rw-r--r-- | grub-core/commands/videoinfo.c | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/grub-core/commands/videoinfo.c b/grub-core/commands/videoinfo.c new file mode 100644 index 0000000..3e0c1a1 --- /dev/null +++ b/grub-core/commands/videoinfo.c @@ -0,0 +1,186 @@ +/* videoinfo.c - command to list video modes. */ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2005,2007,2008,2009,2010 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/video.h> +#include <grub/dl.h> +#include <grub/env.h> +#include <grub/misc.h> +#include <grub/mm.h> +#include <grub/command.h> +#include <grub/i18n.h> + +GRUB_MOD_LICENSE ("GPLv3+"); + +static unsigned height, width, depth; + +static int +hook (const struct grub_video_mode_info *info) +{ + if (height && width && (info->width != width || info->height != height)) + return 0; + + if (depth && info->bpp != depth) + return 0; + + if (info->mode_number == GRUB_VIDEO_MODE_NUMBER_INVALID) + grub_printf (" "); + else + grub_printf (" 0x%03x ", info->mode_number); + grub_printf ("%4d x %4d x %2d ", info->width, info->height, info->bpp); + + if (info->mode_type & GRUB_VIDEO_MODE_TYPE_PURE_TEXT) + grub_printf ("Text-only "); + /* Show mask and position details for direct color modes. */ + if (info->mode_type & GRUB_VIDEO_MODE_TYPE_RGB) + grub_printf ("Direct, mask: %d/%d/%d/%d pos: %d/%d/%d/%d", + info->red_mask_size, + info->green_mask_size, + info->blue_mask_size, + info->reserved_mask_size, + info->red_field_pos, + info->green_field_pos, + info->blue_field_pos, + info->reserved_field_pos); + if (info->mode_type & GRUB_VIDEO_MODE_TYPE_INDEX_COLOR) + grub_printf ("Packed "); + if (info->mode_type & GRUB_VIDEO_MODE_TYPE_YUV) + grub_printf ("YUV "); + if (info->mode_type & GRUB_VIDEO_MODE_TYPE_PLANAR) + grub_printf ("Planar "); + if (info->mode_type & GRUB_VIDEO_MODE_TYPE_HERCULES) + grub_printf ("Hercules "); + if (info->mode_type & GRUB_VIDEO_MODE_TYPE_CGA) + grub_printf ("CGA "); + if (info->mode_type & GRUB_VIDEO_MODE_TYPE_NONCHAIN4) + grub_printf ("Non-chain 4 "); + if (info->mode_type & GRUB_VIDEO_MODE_TYPE_1BIT_BITMAP) + grub_printf ("Monochrome "); + if (info->mode_type & GRUB_VIDEO_MODE_TYPE_UNKNOWN) + grub_printf ("Unknown "); + + grub_printf ("\n"); + + return 0; +} + +static grub_err_t +grub_cmd_videoinfo (grub_command_t cmd __attribute__ ((unused)), + int argc, char **args) +{ + grub_video_adapter_t adapter; + grub_video_driver_id_t id; + + height = width = depth = 0; + if (argc) + { + char *ptr; + ptr = args[0]; + width = grub_strtoul (ptr, &ptr, 0); + if (grub_errno) + return grub_errno; + if (*ptr != 'x') + return grub_error (GRUB_ERR_BAD_ARGUMENT, "invalid mode specification"); + ptr++; + height = grub_strtoul (ptr, &ptr, 0); + if (grub_errno) + return grub_errno; + if (*ptr == 'x') + { + ptr++; + depth = grub_strtoul (ptr, &ptr, 0); + if (grub_errno) + return grub_errno; + } + } + +#ifdef GRUB_MACHINE_PCBIOS + if (grub_strcmp (cmd->name, "vbeinfo") == 0) + grub_dl_load ("vbe"); +#endif + + id = grub_video_get_driver_id (); + + grub_printf ("List of supported video modes:\n"); + grub_printf ("Legend: P=Packed pixel, D=Direct color, " + "mask/pos=R/G/B/reserved\n"); + + FOR_VIDEO_ADAPTERS (adapter) + { + grub_printf ("Adapter '%s':\n", adapter->name); + + if (!adapter->iterate) + { + grub_printf (" No info available\n"); + continue; + } + + if (adapter->id != id) + { + if (adapter->init ()) + { + grub_printf (" Failed\n"); + grub_errno = GRUB_ERR_NONE; + continue; + } + } + + if (adapter->print_adapter_specific_info) + adapter->print_adapter_specific_info (); + + adapter->iterate (hook); + + if (adapter->id != id) + { + if (adapter->fini ()) + { + grub_errno = GRUB_ERR_NONE; + continue; + } + } + } + return GRUB_ERR_NONE; +} + +static grub_command_t cmd; +#ifdef GRUB_MACHINE_PCBIOS +static grub_command_t cmd_vbe; +#endif + +GRUB_MOD_INIT(videoinfo) +{ + cmd = grub_register_command ("videoinfo", grub_cmd_videoinfo, "[WxH[xD]]", + N_("List available video modes. If " + "resolution is given show only modes" + " matching it.")); +#ifdef GRUB_MACHINE_PCBIOS + cmd_vbe = grub_register_command ("vbeinfo", grub_cmd_videoinfo, "[WxH[xD]]", + N_("List available video modes. If " + "resolution is given show only modes" + " matching it.")); +#endif +} + +GRUB_MOD_FINI(videoinfo) +{ + grub_unregister_command (cmd); +#ifdef GRUB_MACHINE_PCBIOS + grub_unregister_command (cmd_vbe); +#endif +} + |