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25#include <common.h>
26#include <bios_emul.h>
27#include <dm.h>
28#include <errno.h>
29#include <malloc.h>
30#include <pci.h>
31#include <pci_rom.h>
32#include <vbe.h>
33#include <video.h>
34#include <video_fb.h>
35#include <linux/screen_info.h>
36
37#ifdef CONFIG_X86
38#include <asm/acpi_s3.h>
39DECLARE_GLOBAL_DATA_PTR;
40#endif
41
42__weak bool board_should_run_oprom(struct udevice *dev)
43{
44#if defined(CONFIG_X86) && defined(CONFIG_HAVE_ACPI_RESUME)
45 if (gd->arch.prev_sleep_state == ACPI_S3) {
46 if (IS_ENABLED(CONFIG_S3_VGA_ROM_RUN))
47 return true;
48 else
49 return false;
50 }
51#endif
52
53 return true;
54}
55
56__weak bool board_should_load_oprom(struct udevice *dev)
57{
58 return true;
59}
60
61__weak uint32_t board_map_oprom_vendev(uint32_t vendev)
62{
63 return vendev;
64}
65
66static int pci_rom_probe(struct udevice *dev, struct pci_rom_header **hdrp)
67{
68 struct pci_child_platdata *pplat = dev_get_parent_platdata(dev);
69 struct pci_rom_header *rom_header;
70 struct pci_rom_data *rom_data;
71 u16 rom_vendor, rom_device;
72 u32 rom_class;
73 u32 vendev;
74 u32 mapped_vendev;
75 u32 rom_address;
76
77 vendev = pplat->vendor << 16 | pplat->device;
78 mapped_vendev = board_map_oprom_vendev(vendev);
79 if (vendev != mapped_vendev)
80 debug("Device ID mapped to %#08x\n", mapped_vendev);
81
82#ifdef CONFIG_VGA_BIOS_ADDR
83 rom_address = CONFIG_VGA_BIOS_ADDR;
84#else
85
86 dm_pci_read_config32(dev, PCI_ROM_ADDRESS, &rom_address);
87 if (rom_address == 0x00000000 || rom_address == 0xffffffff) {
88 debug("%s: rom_address=%x\n", __func__, rom_address);
89 return -ENOENT;
90 }
91
92
93 dm_pci_write_config32(dev, PCI_ROM_ADDRESS,
94 rom_address | PCI_ROM_ADDRESS_ENABLE);
95#endif
96 debug("Option ROM address %x\n", rom_address);
97 rom_header = (struct pci_rom_header *)(unsigned long)rom_address;
98
99 debug("PCI expansion ROM, signature %#04x, INIT size %#04x, data ptr %#04x\n",
100 le16_to_cpu(rom_header->signature),
101 rom_header->size * 512, le16_to_cpu(rom_header->data));
102
103 if (le16_to_cpu(rom_header->signature) != PCI_ROM_HDR) {
104 printf("Incorrect expansion ROM header signature %04x\n",
105 le16_to_cpu(rom_header->signature));
106#ifndef CONFIG_VGA_BIOS_ADDR
107
108 dm_pci_write_config32(dev, PCI_ROM_ADDRESS, rom_address);
109#endif
110 return -EINVAL;
111 }
112
113 rom_data = (((void *)rom_header) + le16_to_cpu(rom_header->data));
114 rom_vendor = le16_to_cpu(rom_data->vendor);
115 rom_device = le16_to_cpu(rom_data->device);
116
117 debug("PCI ROM image, vendor ID %04x, device ID %04x,\n",
118 rom_vendor, rom_device);
119
120
121 if ((pplat->vendor != rom_vendor || pplat->device != rom_device) &&
122 (vendev == mapped_vendev)) {
123 printf("ID mismatch: vendor ID %04x, device ID %04x\n",
124 rom_vendor, rom_device);
125
126 }
127
128 rom_class = (le16_to_cpu(rom_data->class_hi) << 8) | rom_data->class_lo;
129 debug("PCI ROM image, Class Code %06x, Code Type %02x\n",
130 rom_class, rom_data->type);
131
132 if (pplat->class != rom_class) {
133 debug("Class Code mismatch ROM %06x, dev %06x\n",
134 rom_class, pplat->class);
135 }
136 *hdrp = rom_header;
137
138 return 0;
139}
140
141
142
143
144
145
146
147
148
149
150
151
152static int pci_rom_load(struct pci_rom_header *rom_header,
153 struct pci_rom_header **ram_headerp, bool *allocedp)
154{
155 struct pci_rom_data *rom_data;
156 unsigned int rom_size;
157 unsigned int image_size = 0;
158 void *target;
159
160 *allocedp = false;
161 do {
162
163 rom_header = (struct pci_rom_header *)((void *)rom_header +
164 image_size);
165
166 rom_data = (struct pci_rom_data *)((void *)rom_header +
167 le16_to_cpu(rom_header->data));
168
169 image_size = le16_to_cpu(rom_data->ilen) * 512;
170 } while ((rom_data->type != 0) && (rom_data->indicator == 0));
171
172 if (rom_data->type != 0)
173 return -EACCES;
174
175 rom_size = rom_header->size * 512;
176
177#ifdef PCI_VGA_RAM_IMAGE_START
178 target = (void *)PCI_VGA_RAM_IMAGE_START;
179#else
180 target = (void *)malloc(rom_size);
181 if (!target)
182 return -ENOMEM;
183 *allocedp = true;
184#endif
185 if (target != rom_header) {
186 ulong start = get_timer(0);
187
188 debug("Copying VGA ROM Image from %p to %p, 0x%x bytes\n",
189 rom_header, target, rom_size);
190 memcpy(target, rom_header, rom_size);
191 if (memcmp(target, rom_header, rom_size)) {
192 printf("VGA ROM copy failed\n");
193 return -EFAULT;
194 }
195 debug("Copy took %lums\n", get_timer(start));
196 }
197 *ram_headerp = target;
198
199 return 0;
200}
201
202struct vbe_mode_info mode_info;
203
204void setup_video(struct screen_info *screen_info)
205{
206 struct vesa_mode_info *vesa = &mode_info.vesa;
207
208
209 if (!vesa->x_resolution || !vesa->y_resolution)
210 return;
211
212 screen_info->orig_video_isVGA = VIDEO_TYPE_VLFB;
213
214 screen_info->lfb_width = vesa->x_resolution;
215 screen_info->lfb_height = vesa->y_resolution;
216 screen_info->lfb_depth = vesa->bits_per_pixel;
217 screen_info->lfb_linelength = vesa->bytes_per_scanline;
218 screen_info->lfb_base = vesa->phys_base_ptr;
219 screen_info->lfb_size =
220 ALIGN(screen_info->lfb_linelength * screen_info->lfb_height,
221 65536);
222 screen_info->lfb_size >>= 16;
223 screen_info->red_size = vesa->red_mask_size;
224 screen_info->red_pos = vesa->red_mask_pos;
225 screen_info->green_size = vesa->green_mask_size;
226 screen_info->green_pos = vesa->green_mask_pos;
227 screen_info->blue_size = vesa->blue_mask_size;
228 screen_info->blue_pos = vesa->blue_mask_pos;
229 screen_info->rsvd_size = vesa->reserved_mask_size;
230 screen_info->rsvd_pos = vesa->reserved_mask_pos;
231}
232
233int dm_pci_run_vga_bios(struct udevice *dev, int (*int15_handler)(void),
234 int exec_method)
235{
236 struct pci_child_platdata *pplat = dev_get_parent_platdata(dev);
237 struct pci_rom_header *rom = NULL, *ram = NULL;
238 int vesa_mode = -1;
239 bool emulate, alloced;
240 int ret;
241
242
243 if (((pplat->class >> 8) ^ PCI_CLASS_DISPLAY_VGA) & 0xff00) {
244 debug("%s: Class %#x, should be %#x\n", __func__, pplat->class,
245 PCI_CLASS_DISPLAY_VGA);
246 return -ENODEV;
247 }
248
249 if (!board_should_load_oprom(dev))
250 return log_msg_ret("Should not load OPROM", -ENXIO);
251
252 ret = pci_rom_probe(dev, &rom);
253 if (ret)
254 return ret;
255
256 ret = pci_rom_load(rom, &ram, &alloced);
257 if (ret)
258 goto err;
259
260 if (!board_should_run_oprom(dev)) {
261 ret = -ENXIO;
262 goto err;
263 }
264
265#if defined(CONFIG_FRAMEBUFFER_SET_VESA_MODE) && \
266 defined(CONFIG_FRAMEBUFFER_VESA_MODE)
267 vesa_mode = CONFIG_FRAMEBUFFER_VESA_MODE;
268#endif
269 debug("Selected vesa mode %#x\n", vesa_mode);
270
271 if (exec_method & PCI_ROM_USE_NATIVE) {
272#ifdef CONFIG_X86
273 emulate = false;
274#else
275 if (!(exec_method & PCI_ROM_ALLOW_FALLBACK)) {
276 printf("BIOS native execution is only available on x86\n");
277 ret = -ENOSYS;
278 goto err;
279 }
280 emulate = true;
281#endif
282 } else {
283#ifdef CONFIG_BIOSEMU
284 emulate = true;
285#else
286 if (!(exec_method & PCI_ROM_ALLOW_FALLBACK)) {
287 printf("BIOS emulation not available - see CONFIG_BIOSEMU\n");
288 ret = -ENOSYS;
289 goto err;
290 }
291 emulate = false;
292#endif
293 }
294
295 if (emulate) {
296#ifdef CONFIG_BIOSEMU
297 BE_VGAInfo *info;
298
299 ret = biosemu_setup(dev, &info);
300 if (ret)
301 goto err;
302 biosemu_set_interrupt_handler(0x15, int15_handler);
303 ret = biosemu_run(dev, (uchar *)ram, 1 << 16, info,
304 true, vesa_mode, &mode_info);
305 if (ret)
306 goto err;
307#endif
308 } else {
309#if defined(CONFIG_X86) && CONFIG_IS_ENABLED(X86_32BIT_INIT)
310 bios_set_interrupt_handler(0x15, int15_handler);
311
312 bios_run_on_x86(dev, (unsigned long)ram, vesa_mode,
313 &mode_info);
314#endif
315 }
316 debug("Final vesa mode %#x\n", mode_info.video_mode);
317 ret = 0;
318
319err:
320 if (alloced)
321 free(ram);
322 return ret;
323}
324
325#ifdef CONFIG_DM_VIDEO
326int vbe_setup_video_priv(struct vesa_mode_info *vesa,
327 struct video_priv *uc_priv,
328 struct video_uc_platdata *plat)
329{
330 if (!vesa->x_resolution)
331 return log_msg_ret("No x resolution", -ENXIO);
332 uc_priv->xsize = vesa->x_resolution;
333 uc_priv->ysize = vesa->y_resolution;
334 uc_priv->line_length = vesa->bytes_per_scanline;
335 switch (vesa->bits_per_pixel) {
336 case 32:
337 case 24:
338 uc_priv->bpix = VIDEO_BPP32;
339 break;
340 case 16:
341 uc_priv->bpix = VIDEO_BPP16;
342 break;
343 default:
344 return -EPROTONOSUPPORT;
345 }
346 plat->base = vesa->phys_base_ptr;
347 plat->size = vesa->bytes_per_scanline * vesa->y_resolution;
348
349 return 0;
350}
351
352int vbe_setup_video(struct udevice *dev, int (*int15_handler)(void))
353{
354 struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
355 struct video_priv *uc_priv = dev_get_uclass_priv(dev);
356 int ret;
357
358
359 if (!ll_boot_init()) {
360 printf("Not available (previous bootloader prevents it)\n");
361 return -EPERM;
362 }
363 bootstage_start(BOOTSTAGE_ID_ACCUM_LCD, "vesa display");
364 ret = dm_pci_run_vga_bios(dev, int15_handler, PCI_ROM_USE_NATIVE |
365 PCI_ROM_ALLOW_FALLBACK);
366 bootstage_accum(BOOTSTAGE_ID_ACCUM_LCD);
367 if (ret) {
368 debug("failed to run video BIOS: %d\n", ret);
369 return ret;
370 }
371
372 ret = vbe_setup_video_priv(&mode_info.vesa, uc_priv, plat);
373 if (ret) {
374 debug("No video mode configured\n");
375 return ret;
376 }
377
378 printf("Video: %dx%dx%d\n", uc_priv->xsize, uc_priv->ysize,
379 mode_info.vesa.bits_per_pixel);
380
381 return 0;
382}
383#endif
384
