--- /dev/null
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2005,2006,2007,2008,2009 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/>.
+ */
+
+#define grub_video_render_target grub_video_fbrender_target
+
+#include <grub/err.h>
+#include <grub/types.h>
+#include <grub/dl.h>
+#include <grub/misc.h>
+#include <grub/mm.h>
+#include <grub/video.h>
+#include <grub/video_fb.h>
+#include <grub/ieee1275/ieee1275.h>
+
+/* Only 8-bit indexed color is supported for now. */
+
+static unsigned old_width, old_height;
+static int restore_needed;
+static char *display;
+
+static struct
+{
+ struct grub_video_mode_info mode_info;
+ struct grub_video_render_target *render_target;
+ grub_uint8_t *ptr;
+} framebuffer;
+
+static grub_err_t
+grub_video_ieee1275_set_palette (unsigned int start, unsigned int count,
+ struct grub_video_palette_data *palette_data);
+
+static void
+set_video_mode (unsigned width __attribute__ ((unused)),
+ unsigned height __attribute__ ((unused)))
+{
+ /* TODO */
+}
+
+static void
+find_display (void)
+{
+ auto int hook (struct grub_ieee1275_devalias *alias);
+ int hook (struct grub_ieee1275_devalias *alias)
+ {
+ if (grub_strcmp (alias->type, "display") == 0)
+ {
+ grub_dprintf ("video", "Found display %s\n", alias->name);
+ display = grub_strdup (alias->name);
+ return 1;
+ }
+ return 0;
+ }
+
+ grub_ieee1275_devices_iterate (hook);
+}
+
+static grub_err_t
+grub_video_ieee1275_init (void)
+{
+ grub_memset (&framebuffer, 0, sizeof(framebuffer));
+ return grub_video_fb_init ();
+}
+
+static grub_err_t
+grub_video_ieee1275_fini (void)
+{
+ if (restore_needed)
+ {
+ set_video_mode (old_width, old_height);
+ restore_needed = 0;
+ }
+ return grub_video_fb_fini ();
+}
+
+static grub_err_t
+grub_video_ieee1275_fill_mode_info (grub_ieee1275_phandle_t dev,
+ struct grub_video_mode_info *out)
+{
+ grub_uint32_t tmp;
+
+ grub_memset (out, 0, sizeof (*out));
+
+ if (grub_ieee1275_get_integer_property (dev, "width", &tmp,
+ sizeof (tmp), 0))
+ return grub_error (GRUB_ERR_IO, "Couldn't retrieve display width.");
+ out->width = tmp;
+
+ if (grub_ieee1275_get_integer_property (dev, "height", &tmp,
+ sizeof (tmp), 0))
+ return grub_error (GRUB_ERR_IO, "Couldn't retrieve display height.");
+ out->height = tmp;
+
+ if (grub_ieee1275_get_integer_property (dev, "linebytes", &tmp,
+ sizeof (tmp), 0))
+ return grub_error (GRUB_ERR_IO, "Couldn't retrieve display pitch.");
+ out->pitch = tmp;
+
+ out->mode_type = GRUB_VIDEO_MODE_TYPE_INDEX_COLOR;
+ out->bpp = 8;
+ out->bytes_per_pixel = 1;
+ out->number_of_colors = 256;
+
+ out->blit_format = grub_video_get_blit_format (out);
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+grub_video_ieee1275_setup (unsigned int width, unsigned int height,
+ unsigned int mode_type __attribute__ ((unused)),
+ unsigned int mode_mask __attribute__ ((unused)))
+{
+ grub_uint32_t current_width, current_height, address;
+ grub_err_t err;
+ grub_ieee1275_phandle_t dev;
+
+ if (!display)
+ return grub_error (GRUB_ERR_IO, "Couldn't find display device.");
+
+ if (grub_ieee1275_finddevice (display, &dev))
+ return grub_error (GRUB_ERR_IO, "Couldn't open display device.");
+
+ if (grub_ieee1275_get_integer_property (dev, "width", ¤t_width,
+ sizeof (current_width), 0))
+ return grub_error (GRUB_ERR_IO, "Couldn't retrieve display width.");
+
+ if (grub_ieee1275_get_integer_property (dev, "height", ¤t_height,
+ sizeof (current_width), 0))
+ return grub_error (GRUB_ERR_IO, "Couldn't retrieve display height.");
+
+ if ((width == current_width && height == current_height)
+ || (width == 0 && height == 0))
+ {
+ grub_dprintf ("video", "IEEE1275: keeping current mode %dx%d\n",
+ current_width, current_height);
+ }
+ else
+ {
+ grub_dprintf ("video", "IEEE1275: Setting mode %dx%d\n", width, height);
+ /* TODO. */
+ }
+
+ err = grub_video_ieee1275_fill_mode_info (dev, &framebuffer.mode_info);
+ if (err)
+ {
+ grub_dprintf ("video", "IEEE1275: couldn't fill mode info\n");
+ return err;
+ }
+
+ if (grub_ieee1275_get_integer_property (dev, "address", &address,
+ sizeof (address), 0))
+ return grub_error (GRUB_ERR_IO, "Couldn't retrieve display address.");
+
+ framebuffer.ptr = (void *) address;
+
+ grub_video_ieee1275_set_palette (0, GRUB_VIDEO_FBSTD_NUMCOLORS,
+ grub_video_fbstd_colors);
+
+ grub_dprintf ("video", "IEEE1275: initialising FB @ %p %dx%dx%d\n",
+ framebuffer.ptr, framebuffer.mode_info.width,
+ framebuffer.mode_info.height, framebuffer.mode_info.bpp);
+
+ err = grub_video_fb_create_render_target_from_pointer
+ (&framebuffer.render_target, &framebuffer.mode_info, framebuffer.ptr);
+
+ if (err)
+ {
+ grub_dprintf ("video", "IEEE1275: Couldn't create FB target\n");
+ return err;
+ }
+
+ err = grub_video_fb_set_active_render_target (framebuffer.render_target);
+
+ if (err)
+ {
+ grub_dprintf ("video", "IEEE1275: Couldn't set FB target\n");
+ return err;
+ }
+
+ err = grub_video_fb_set_palette (0, GRUB_VIDEO_FBSTD_NUMCOLORS,
+ grub_video_fbstd_colors);
+
+ if (err)
+ grub_dprintf ("video", "IEEE1275: Couldn't set palette\n");
+ else
+ grub_dprintf ("video", "IEEE1275: Success\n");
+
+ return err;
+}
+
+static grub_err_t
+grub_video_ieee1275_swap_buffers (void)
+{
+ /* TODO: Implement buffer swapping. */
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+grub_video_ieee1275_set_active_render_target (struct grub_video_render_target *target)
+{
+ if (target == GRUB_VIDEO_RENDER_TARGET_DISPLAY)
+ target = framebuffer.render_target;
+
+ return grub_video_fb_set_active_render_target (target);
+}
+
+static grub_err_t
+grub_video_ieee1275_get_info_and_fini (struct grub_video_mode_info *mode_info,
+ void **framebuf)
+{
+ grub_memcpy (mode_info, &(framebuffer.mode_info), sizeof (*mode_info));
+ *framebuf = (char *) framebuffer.ptr;
+
+ grub_video_fb_fini ();
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+grub_video_ieee1275_set_palette (unsigned int start, unsigned int count,
+ struct grub_video_palette_data *palette_data)
+{
+ grub_err_t err;
+ struct grub_video_palette_data fb_palette_data[256];
+
+ err = grub_video_fb_set_palette (start, count, palette_data);
+ if (err)
+ return err;
+
+ grub_video_fb_get_palette (0, 256, fb_palette_data);
+
+ /* TODO. */
+
+ return GRUB_ERR_NONE;
+}
+
+static struct grub_video_adapter grub_video_ieee1275_adapter =
+ {
+ .name = "IEEE1275 video driver",
+
+ .init = grub_video_ieee1275_init,
+ .fini = grub_video_ieee1275_fini,
+ .setup = grub_video_ieee1275_setup,
+ .get_info = grub_video_fb_get_info,
+ .get_info_and_fini = grub_video_ieee1275_get_info_and_fini,
+ .set_palette = grub_video_ieee1275_set_palette,
+ .get_palette = grub_video_fb_get_palette,
+ .set_viewport = grub_video_fb_set_viewport,
+ .get_viewport = grub_video_fb_get_viewport,
+ .map_color = grub_video_fb_map_color,
+ .map_rgb = grub_video_fb_map_rgb,
+ .map_rgba = grub_video_fb_map_rgba,
+ .unmap_color = grub_video_fb_unmap_color,
+ .fill_rect = grub_video_fb_fill_rect,
+ .blit_bitmap = grub_video_fb_blit_bitmap,
+ .blit_render_target = grub_video_fb_blit_render_target,
+ .scroll = grub_video_fb_scroll,
+ .swap_buffers = grub_video_ieee1275_swap_buffers,
+ .create_render_target = grub_video_fb_create_render_target,
+ .delete_render_target = grub_video_fb_delete_render_target,
+ .set_active_render_target = grub_video_ieee1275_set_active_render_target,
+ .get_active_render_target = grub_video_fb_get_active_render_target,
+
+ .next = 0
+ };
+
+GRUB_MOD_INIT(ieee1275_fb)
+{
+ find_display ();
+ if (display)
+ grub_video_register (&grub_video_ieee1275_adapter);
+}
+
+GRUB_MOD_FINI(ieee1275_fb)
+{
+ if (restore_needed)
+ {
+ set_video_mode (old_width, old_height);
+ restore_needed = 0;
+ }
+ if (display)
+ grub_video_unregister (&grub_video_ieee1275_adapter);
+ grub_free (display);
+}
projects / thirdparty / grub.git / commitdiff
