108 lines
3 KiB
C
108 lines
3 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 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/env.h>
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#include <grub/misc.h>
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#include <grub/xnu.h>
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#include <grub/mm.h>
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#include <grub/cpu/xnu.h>
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#include <grub/video_fb.h>
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#define min(a,b) (((a) < (b)) ? (a) : (b))
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#define max(a,b) (((a) > (b)) ? (a) : (b))
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#define DEFAULT_VIDEO_MODE "1024x768x32,800x600x32,640x480x32"
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static int NESTED_FUNC_ATTR video_hook (grub_video_adapter_t p __attribute__ ((unused)),
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struct grub_video_mode_info *info)
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{
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if (info->mode_type & GRUB_VIDEO_MODE_TYPE_PURE_TEXT)
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return 0;
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return 1;
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}
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/* Setup video for xnu. */
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grub_err_t
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grub_xnu_set_video (struct grub_xnu_boot_params *params)
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{
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struct grub_video_mode_info mode_info;
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int ret;
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char *tmp, *modevar;
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void *framebuffer;
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grub_err_t err;
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modevar = grub_env_get ("gfxpayload");
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if (! modevar || *modevar == 0)
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err = grub_video_set_mode (DEFAULT_VIDEO_MODE, video_hook);
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else
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{
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tmp = grub_asprintf ("%s;" DEFAULT_VIDEO_MODE, modevar);
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if (! tmp)
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return grub_error (GRUB_ERR_OUT_OF_MEMORY,
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"couldn't allocate temporary storag");
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err = grub_video_set_mode (tmp, video_hook);
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grub_free (tmp);
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}
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if (err)
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return err;
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if (grub_xnu_bitmap)
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{
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int x, y;
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x = mode_info.width - grub_xnu_bitmap->mode_info.width;
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x /= 2;
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y = mode_info.height - grub_xnu_bitmap->mode_info.height;
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y /= 2;
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err = grub_video_blit_bitmap (grub_xnu_bitmap,
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GRUB_VIDEO_BLIT_REPLACE,
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x > 0 ? x : 0,
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y > 0 ? y : 0,
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x < 0 ? -x : 0,
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y < 0 ? -y : 0,
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min (grub_xnu_bitmap->mode_info.width,
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mode_info.width),
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min (grub_xnu_bitmap->mode_info.height,
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mode_info.height));
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if (err)
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{
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grub_print_error ();
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grub_errno = GRUB_ERR_NONE;
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grub_xnu_bitmap = 0;
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}
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err = GRUB_ERR_NONE;
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}
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ret = grub_video_get_info_and_fini (&mode_info, &framebuffer);
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if (ret)
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return grub_error (GRUB_ERR_IO, "couldn't retrieve video parameters");
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params->lfb_width = mode_info.width;
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params->lfb_height = mode_info.height;
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params->lfb_depth = mode_info.bpp;
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params->lfb_line_len = mode_info.pitch;
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params->lfb_base = PTR_TO_UINT32 (framebuffer);
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params->lfb_mode = grub_xnu_bitmap
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? GRUB_XNU_VIDEO_SPLASH : GRUB_XNU_VIDEO_TEXT_IN_VIDEO;
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return GRUB_ERR_NONE;
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}
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