basic framebuffer support
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phcoder
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1 changed files with 197 additions and 0 deletions
197
video/sm712.c
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197
video/sm712.c
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2005,2006,2007,2008,2009 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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#define grub_video_render_target grub_video_fbrender_target
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#include <grub/err.h>
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#include <grub/types.h>
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#include <grub/dl.h>
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#include <grub/misc.h>
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#include <grub/mm.h>
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#include <grub/video.h>
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#include <grub/video_fb.h>
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#include <grub/pci.h>
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static struct
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{
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struct grub_video_mode_info mode_info;
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struct grub_video_render_target *render_target;
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unsigned int bytes_per_scan_line;
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unsigned int bytes_per_pixel;
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grub_uint8_t *ptr;
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int index_color_mode;
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int mapped;
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grub_pci_device_t dev;
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} framebuffer;
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static grub_err_t
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grub_video_sm712_video_init (void)
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{
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/* Reset frame buffer. */
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grub_memset (&framebuffer, 0, sizeof(framebuffer));
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return grub_video_fb_init ();
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}
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static grub_err_t
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grub_video_sm712_video_fini (void)
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{
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if (framebuffer.mapped)
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grub_pci_device_unmap_range (framebuffer.dev, framebuffer.ptr,
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1024 * 600 * 2);
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return grub_video_fb_fini ();
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}
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static grub_err_t
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grub_video_sm712_setup (unsigned int width, unsigned int height,
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unsigned int mode_type)
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{
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int depth;
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grub_err_t err;
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/* Decode depth from mode_type. If it is zero, then autodetect. */
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depth = (mode_type & GRUB_VIDEO_MODE_TYPE_DEPTH_MASK)
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>> GRUB_VIDEO_MODE_TYPE_DEPTH_POS;
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if ((1024 != width && width != 0) || (600 != height && height != 0)
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|| (16 != depth && depth != 0))
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return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
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"Only 1024x600x16 is supported");
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/* Fill mode info details. */
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framebuffer.mode_info.width = 1024;
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framebuffer.mode_info.height = 600;
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framebuffer.mode_info.mode_type = GRUB_VIDEO_MODE_TYPE_RGB;
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framebuffer.mode_info.bpp = 16;
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framebuffer.mode_info.bytes_per_pixel = 2;
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framebuffer.mode_info.pitch = 1024 * 2;
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framebuffer.mode_info.number_of_colors = 256;
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framebuffer.mode_info.red_mask_size = 5;
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framebuffer.mode_info.red_field_pos = 11;
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framebuffer.mode_info.green_mask_size = 6;
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framebuffer.mode_info.green_field_pos = 5;
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framebuffer.mode_info.blue_mask_size = 5;
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framebuffer.mode_info.blue_field_pos = 0;
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framebuffer.mode_info.reserved_mask_size = 0;
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framebuffer.mode_info.reserved_field_pos = 0;
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framebuffer.mode_info.blit_format = grub_video_get_blit_format (&framebuffer.mode_info);
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*(volatile grub_uint32_t *) 0xbfe00110 = 1;
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framebuffer.ptr = (void *) 0xb0000000;
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// framebuffer.ptr = grub_pci_device_map_range (framebuffer.dev, 1 << 26,
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// 1024 * 600 * 2);
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framebuffer.mapped = 1;
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err = grub_video_fb_create_render_target_from_pointer (&framebuffer.render_target, &framebuffer.mode_info, framebuffer.ptr);
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if (err)
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return err;
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err = grub_video_fb_set_active_render_target (framebuffer.render_target);
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if (err)
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return err;
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/* Copy default palette to initialize emulated palette. */
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err = grub_video_fb_set_palette (0, GRUB_VIDEO_FBSTD_NUMCOLORS,
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grub_video_fbstd_colors);
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return err;
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}
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static grub_err_t
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grub_video_sm712_set_palette (unsigned int start, unsigned int count,
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struct grub_video_palette_data *palette_data)
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{
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if (framebuffer.index_color_mode)
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{
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/* TODO: Implement setting indexed color mode palette to hardware. */
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}
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/* Then set color to emulated palette. */
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return grub_video_fb_set_palette (start, count, palette_data);
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}
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static grub_err_t
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grub_video_sm712_swap_buffers (void)
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{
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/* TODO: Implement buffer swapping. */
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return GRUB_ERR_NONE;
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}
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static grub_err_t
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grub_video_sm712_set_active_render_target (struct grub_video_render_target *target)
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{
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if (target == GRUB_VIDEO_RENDER_TARGET_DISPLAY)
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target = framebuffer.render_target;
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return grub_video_fb_set_active_render_target (target);
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}
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static grub_err_t
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grub_video_sm712_get_info_and_fini (struct grub_video_mode_info *mode_info,
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void **framebuf)
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{
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grub_memcpy (mode_info, &(framebuffer.mode_info), sizeof (*mode_info));
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*framebuf = (char *) framebuffer.ptr;
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grub_video_fb_fini ();
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return GRUB_ERR_NONE;
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}
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static struct grub_video_adapter grub_video_sm712_adapter =
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{
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.name = "SM712 Video Driver",
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.init = grub_video_sm712_video_init,
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.fini = grub_video_sm712_video_fini,
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.setup = grub_video_sm712_setup,
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.get_info = grub_video_fb_get_info,
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.get_info_and_fini = grub_video_sm712_get_info_and_fini,
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.set_palette = grub_video_sm712_set_palette,
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.get_palette = grub_video_fb_get_palette,
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.set_viewport = grub_video_fb_set_viewport,
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.get_viewport = grub_video_fb_get_viewport,
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.map_color = grub_video_fb_map_color,
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.map_rgb = grub_video_fb_map_rgb,
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.map_rgba = grub_video_fb_map_rgba,
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.unmap_color = grub_video_fb_unmap_color,
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.fill_rect = grub_video_fb_fill_rect,
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.blit_bitmap = grub_video_fb_blit_bitmap,
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.blit_render_target = grub_video_fb_blit_render_target,
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.scroll = grub_video_fb_scroll,
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.swap_buffers = grub_video_sm712_swap_buffers,
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.create_render_target = grub_video_fb_create_render_target,
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.delete_render_target = grub_video_fb_delete_render_target,
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.set_active_render_target = grub_video_sm712_set_active_render_target,
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.get_active_render_target = grub_video_fb_get_active_render_target,
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.next = 0
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};
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GRUB_MOD_INIT(video_sm712)
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{
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grub_video_register (&grub_video_sm712_adapter);
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}
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GRUB_MOD_FINI(video_sm712)
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{
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grub_video_unregister (&grub_video_sm712_adapter);
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}
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