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1 | /* |
2 | * GRUB -- GRand Unified Bootloader | |
3 | * Copyright (C) 2005,2006,2007,2008,2009 Free Software Foundation, Inc. | |
4 | * | |
5 | * GRUB is free software: you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation, either version 3 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * GRUB is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with GRUB. If not, see <http://www.gnu.org/licenses/>. | |
17 | */ | |
18 | ||
19 | #define grub_video_render_target grub_video_fbrender_target | |
20 | ||
21 | #include <grub/err.h> | |
22 | #include <grub/types.h> | |
23 | #include <grub/dl.h> | |
24 | #include <grub/misc.h> | |
25 | #include <grub/mm.h> | |
26 | #include <grub/video.h> | |
27 | #include <grub/video_fb.h> | |
28 | #include <grub/ieee1275/ieee1275.h> | |
29 | ||
30 | /* Only 8-bit indexed color is supported for now. */ | |
31 | ||
32 | static unsigned old_width, old_height; | |
33 | static int restore_needed; | |
34 | static char *display; | |
35 | ||
36 | static struct | |
37 | { | |
38 | struct grub_video_mode_info mode_info; | |
39 | struct grub_video_render_target *render_target; | |
40 | grub_uint8_t *ptr; | |
41 | } framebuffer; | |
42 | ||
43 | static grub_err_t | |
44 | grub_video_ieee1275_set_palette (unsigned int start, unsigned int count, | |
45 | struct grub_video_palette_data *palette_data); | |
46 | ||
47 | static void | |
48 | set_video_mode (unsigned width __attribute__ ((unused)), | |
49 | unsigned height __attribute__ ((unused))) | |
50 | { | |
51 | /* TODO */ | |
52 | } | |
53 | ||
54 | static void | |
55 | find_display (void) | |
56 | { | |
57 | auto int hook (struct grub_ieee1275_devalias *alias); | |
58 | int hook (struct grub_ieee1275_devalias *alias) | |
59 | { | |
60 | if (grub_strcmp (alias->type, "display") == 0) | |
61 | { | |
a3334e79 VS |
62 | grub_dprintf ("video", "Found display %s\n", alias->path); |
63 | display = grub_strdup (alias->path); | |
fbab7b07 VS |
64 | return 1; |
65 | } | |
66 | return 0; | |
67 | } | |
68 | ||
69 | grub_ieee1275_devices_iterate (hook); | |
70 | } | |
71 | ||
72 | static grub_err_t | |
73 | grub_video_ieee1275_init (void) | |
74 | { | |
75 | grub_memset (&framebuffer, 0, sizeof(framebuffer)); | |
76 | return grub_video_fb_init (); | |
77 | } | |
78 | ||
79 | static grub_err_t | |
80 | grub_video_ieee1275_fini (void) | |
81 | { | |
82 | if (restore_needed) | |
83 | { | |
84 | set_video_mode (old_width, old_height); | |
85 | restore_needed = 0; | |
86 | } | |
87 | return grub_video_fb_fini (); | |
88 | } | |
89 | ||
90 | static grub_err_t | |
91 | grub_video_ieee1275_fill_mode_info (grub_ieee1275_phandle_t dev, | |
92 | struct grub_video_mode_info *out) | |
93 | { | |
94 | grub_uint32_t tmp; | |
95 | ||
96 | grub_memset (out, 0, sizeof (*out)); | |
97 | ||
98 | if (grub_ieee1275_get_integer_property (dev, "width", &tmp, | |
99 | sizeof (tmp), 0)) | |
100 | return grub_error (GRUB_ERR_IO, "Couldn't retrieve display width."); | |
101 | out->width = tmp; | |
102 | ||
103 | if (grub_ieee1275_get_integer_property (dev, "height", &tmp, | |
104 | sizeof (tmp), 0)) | |
105 | return grub_error (GRUB_ERR_IO, "Couldn't retrieve display height."); | |
106 | out->height = tmp; | |
107 | ||
108 | if (grub_ieee1275_get_integer_property (dev, "linebytes", &tmp, | |
109 | sizeof (tmp), 0)) | |
110 | return grub_error (GRUB_ERR_IO, "Couldn't retrieve display pitch."); | |
111 | out->pitch = tmp; | |
112 | ||
113 | out->mode_type = GRUB_VIDEO_MODE_TYPE_INDEX_COLOR; | |
114 | out->bpp = 8; | |
115 | out->bytes_per_pixel = 1; | |
116 | out->number_of_colors = 256; | |
117 | ||
118 | out->blit_format = grub_video_get_blit_format (out); | |
119 | return GRUB_ERR_NONE; | |
120 | } | |
121 | ||
122 | static grub_err_t | |
123 | grub_video_ieee1275_setup (unsigned int width, unsigned int height, | |
124 | unsigned int mode_type __attribute__ ((unused)), | |
125 | unsigned int mode_mask __attribute__ ((unused))) | |
126 | { | |
18d4c6f0 | 127 | grub_uint32_t current_width, current_height, address; |
fbab7b07 VS |
128 | grub_err_t err; |
129 | grub_ieee1275_phandle_t dev; | |
130 | ||
131 | if (!display) | |
132 | return grub_error (GRUB_ERR_IO, "Couldn't find display device."); | |
133 | ||
134 | if (grub_ieee1275_finddevice (display, &dev)) | |
135 | return grub_error (GRUB_ERR_IO, "Couldn't open display device."); | |
136 | ||
137 | if (grub_ieee1275_get_integer_property (dev, "width", ¤t_width, | |
138 | sizeof (current_width), 0)) | |
139 | return grub_error (GRUB_ERR_IO, "Couldn't retrieve display width."); | |
140 | ||
141 | if (grub_ieee1275_get_integer_property (dev, "height", ¤t_height, | |
142 | sizeof (current_width), 0)) | |
143 | return grub_error (GRUB_ERR_IO, "Couldn't retrieve display height."); | |
144 | ||
145 | if ((width == current_width && height == current_height) | |
146 | || (width == 0 && height == 0)) | |
147 | { | |
148 | grub_dprintf ("video", "IEEE1275: keeping current mode %dx%d\n", | |
149 | current_width, current_height); | |
150 | } | |
151 | else | |
152 | { | |
153 | grub_dprintf ("video", "IEEE1275: Setting mode %dx%d\n", width, height); | |
154 | /* TODO. */ | |
58b78c12 | 155 | return grub_error (GRUB_ERR_IO, "can't set mode %dx%d", width, height); |
fbab7b07 VS |
156 | } |
157 | ||
158 | err = grub_video_ieee1275_fill_mode_info (dev, &framebuffer.mode_info); | |
159 | if (err) | |
160 | { | |
161 | grub_dprintf ("video", "IEEE1275: couldn't fill mode info\n"); | |
162 | return err; | |
163 | } | |
164 | ||
ec0be08d | 165 | if (grub_ieee1275_get_integer_property (dev, "address", (void *) &address, |
fbab7b07 VS |
166 | sizeof (address), 0)) |
167 | return grub_error (GRUB_ERR_IO, "Couldn't retrieve display address."); | |
168 | ||
18d4c6f0 VS |
169 | /* For some reason sparc64 uses 32-bit pointer too. */ |
170 | framebuffer.ptr = (void *) (grub_addr_t) address; | |
fbab7b07 VS |
171 | |
172 | grub_video_ieee1275_set_palette (0, GRUB_VIDEO_FBSTD_NUMCOLORS, | |
173 | grub_video_fbstd_colors); | |
174 | ||
175 | grub_dprintf ("video", "IEEE1275: initialising FB @ %p %dx%dx%d\n", | |
176 | framebuffer.ptr, framebuffer.mode_info.width, | |
177 | framebuffer.mode_info.height, framebuffer.mode_info.bpp); | |
178 | ||
179 | err = grub_video_fb_create_render_target_from_pointer | |
180 | (&framebuffer.render_target, &framebuffer.mode_info, framebuffer.ptr); | |
181 | ||
182 | if (err) | |
183 | { | |
184 | grub_dprintf ("video", "IEEE1275: Couldn't create FB target\n"); | |
185 | return err; | |
186 | } | |
187 | ||
188 | err = grub_video_fb_set_active_render_target (framebuffer.render_target); | |
189 | ||
190 | if (err) | |
191 | { | |
192 | grub_dprintf ("video", "IEEE1275: Couldn't set FB target\n"); | |
193 | return err; | |
194 | } | |
195 | ||
196 | err = grub_video_fb_set_palette (0, GRUB_VIDEO_FBSTD_NUMCOLORS, | |
197 | grub_video_fbstd_colors); | |
198 | ||
199 | if (err) | |
200 | grub_dprintf ("video", "IEEE1275: Couldn't set palette\n"); | |
201 | else | |
202 | grub_dprintf ("video", "IEEE1275: Success\n"); | |
203 | ||
204 | return err; | |
205 | } | |
206 | ||
207 | static grub_err_t | |
208 | grub_video_ieee1275_swap_buffers (void) | |
209 | { | |
210 | /* TODO: Implement buffer swapping. */ | |
211 | return GRUB_ERR_NONE; | |
212 | } | |
213 | ||
214 | static grub_err_t | |
215 | grub_video_ieee1275_set_active_render_target (struct grub_video_render_target *target) | |
216 | { | |
217 | if (target == GRUB_VIDEO_RENDER_TARGET_DISPLAY) | |
218 | target = framebuffer.render_target; | |
219 | ||
220 | return grub_video_fb_set_active_render_target (target); | |
221 | } | |
222 | ||
223 | static grub_err_t | |
224 | grub_video_ieee1275_get_info_and_fini (struct grub_video_mode_info *mode_info, | |
225 | void **framebuf) | |
226 | { | |
227 | grub_memcpy (mode_info, &(framebuffer.mode_info), sizeof (*mode_info)); | |
228 | *framebuf = (char *) framebuffer.ptr; | |
229 | ||
230 | grub_video_fb_fini (); | |
231 | ||
232 | return GRUB_ERR_NONE; | |
233 | } | |
234 | ||
235 | static grub_err_t | |
236 | grub_video_ieee1275_set_palette (unsigned int start, unsigned int count, | |
237 | struct grub_video_palette_data *palette_data) | |
238 | { | |
239 | grub_err_t err; | |
240 | struct grub_video_palette_data fb_palette_data[256]; | |
241 | ||
242 | err = grub_video_fb_set_palette (start, count, palette_data); | |
243 | if (err) | |
244 | return err; | |
245 | ||
246 | grub_video_fb_get_palette (0, 256, fb_palette_data); | |
247 | ||
248 | /* TODO. */ | |
249 | ||
250 | return GRUB_ERR_NONE; | |
251 | } | |
252 | ||
253 | static struct grub_video_adapter grub_video_ieee1275_adapter = | |
254 | { | |
255 | .name = "IEEE1275 video driver", | |
256 | ||
d49703d1 VS |
257 | .prio = GRUB_VIDEO_ADAPTER_PRIO_FIRMWARE, |
258 | ||
fbab7b07 VS |
259 | .init = grub_video_ieee1275_init, |
260 | .fini = grub_video_ieee1275_fini, | |
261 | .setup = grub_video_ieee1275_setup, | |
262 | .get_info = grub_video_fb_get_info, | |
263 | .get_info_and_fini = grub_video_ieee1275_get_info_and_fini, | |
264 | .set_palette = grub_video_ieee1275_set_palette, | |
265 | .get_palette = grub_video_fb_get_palette, | |
266 | .set_viewport = grub_video_fb_set_viewport, | |
267 | .get_viewport = grub_video_fb_get_viewport, | |
268 | .map_color = grub_video_fb_map_color, | |
269 | .map_rgb = grub_video_fb_map_rgb, | |
270 | .map_rgba = grub_video_fb_map_rgba, | |
271 | .unmap_color = grub_video_fb_unmap_color, | |
272 | .fill_rect = grub_video_fb_fill_rect, | |
273 | .blit_bitmap = grub_video_fb_blit_bitmap, | |
274 | .blit_render_target = grub_video_fb_blit_render_target, | |
275 | .scroll = grub_video_fb_scroll, | |
276 | .swap_buffers = grub_video_ieee1275_swap_buffers, | |
277 | .create_render_target = grub_video_fb_create_render_target, | |
278 | .delete_render_target = grub_video_fb_delete_render_target, | |
279 | .set_active_render_target = grub_video_ieee1275_set_active_render_target, | |
280 | .get_active_render_target = grub_video_fb_get_active_render_target, | |
281 | ||
282 | .next = 0 | |
283 | }; | |
284 | ||
285 | GRUB_MOD_INIT(ieee1275_fb) | |
286 | { | |
287 | find_display (); | |
288 | if (display) | |
289 | grub_video_register (&grub_video_ieee1275_adapter); | |
290 | } | |
291 | ||
292 | GRUB_MOD_FINI(ieee1275_fb) | |
293 | { | |
294 | if (restore_needed) | |
295 | { | |
296 | set_video_mode (old_width, old_height); | |
297 | restore_needed = 0; | |
298 | } | |
299 | if (display) | |
300 | grub_video_unregister (&grub_video_ieee1275_adapter); | |
301 | grub_free (display); | |
302 | } |