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26#include <common.h>
27#include <bios_emul.h>
28#include <dm.h>
29#include <errno.h>
30#include <malloc.h>
31#include <pci.h>
32#include <pci_rom.h>
33#include <vbe.h>
34#include <video.h>
35#include <video_fb.h>
36#include <linux/screen_info.h>
37
38#ifdef CONFIG_X86
39#include <asm/acpi_s3.h>
40DECLARE_GLOBAL_DATA_PTR;
41#endif
42
43__weak bool board_should_run_oprom(struct udevice *dev)
44{
45#if defined(CONFIG_X86) && defined(CONFIG_HAVE_ACPI_RESUME)
46 if (gd->arch.prev_sleep_state == ACPI_S3) {
47 if (IS_ENABLED(CONFIG_S3_VGA_ROM_RUN))
48 return true;
49 else
50 return false;
51 }
52#endif
53
54 return true;
55}
56
57__weak bool board_should_load_oprom(struct udevice *dev)
58{
59 return true;
60}
61
62__weak uint32_t board_map_oprom_vendev(uint32_t vendev)
63{
64 return vendev;
65}
66
67static int pci_rom_probe(struct udevice *dev, struct pci_rom_header **hdrp)
68{
69 struct pci_child_platdata *pplat = dev_get_parent_platdata(dev);
70 struct pci_rom_header *rom_header;
71 struct pci_rom_data *rom_data;
72 u16 rom_vendor, rom_device;
73 u32 rom_class;
74 u32 vendev;
75 u32 mapped_vendev;
76 u32 rom_address;
77
78 vendev = pplat->vendor << 16 | pplat->device;
79 mapped_vendev = board_map_oprom_vendev(vendev);
80 if (vendev != mapped_vendev)
81 debug("Device ID mapped to %#08x\n", mapped_vendev);
82
83#ifdef CONFIG_VGA_BIOS_ADDR
84 rom_address = CONFIG_VGA_BIOS_ADDR;
85#else
86
87 dm_pci_read_config32(dev, PCI_ROM_ADDRESS, &rom_address);
88 if (rom_address == 0x00000000 || rom_address == 0xffffffff) {
89 debug("%s: rom_address=%x\n", __func__, rom_address);
90 return -ENOENT;
91 }
92
93
94 dm_pci_write_config32(dev, PCI_ROM_ADDRESS,
95 rom_address | PCI_ROM_ADDRESS_ENABLE);
96#endif
97 debug("Option ROM address %x\n", rom_address);
98 rom_header = (struct pci_rom_header *)(unsigned long)rom_address;
99
100 debug("PCI expansion ROM, signature %#04x, INIT size %#04x, data ptr %#04x\n",
101 le16_to_cpu(rom_header->signature),
102 rom_header->size * 512, le16_to_cpu(rom_header->data));
103
104 if (le16_to_cpu(rom_header->signature) != PCI_ROM_HDR) {
105 printf("Incorrect expansion ROM header signature %04x\n",
106 le16_to_cpu(rom_header->signature));
107#ifndef CONFIG_VGA_BIOS_ADDR
108
109 dm_pci_write_config32(dev, PCI_ROM_ADDRESS, rom_address);
110#endif
111 return -EINVAL;
112 }
113
114 rom_data = (((void *)rom_header) + le16_to_cpu(rom_header->data));
115 rom_vendor = le16_to_cpu(rom_data->vendor);
116 rom_device = le16_to_cpu(rom_data->device);
117
118 debug("PCI ROM image, vendor ID %04x, device ID %04x,\n",
119 rom_vendor, rom_device);
120
121
122 if ((pplat->vendor != rom_vendor || pplat->device != rom_device) &&
123 (vendev == mapped_vendev)) {
124 printf("ID mismatch: vendor ID %04x, device ID %04x\n",
125 rom_vendor, rom_device);
126
127 }
128
129 rom_class = (le16_to_cpu(rom_data->class_hi) << 8) | rom_data->class_lo;
130 debug("PCI ROM image, Class Code %06x, Code Type %02x\n",
131 rom_class, rom_data->type);
132
133 if (pplat->class != rom_class) {
134 debug("Class Code mismatch ROM %06x, dev %06x\n",
135 rom_class, pplat->class);
136 }
137 *hdrp = rom_header;
138
139 return 0;
140}
141
142
143
144
145
146
147
148
149
150
151
152
153static int pci_rom_load(struct pci_rom_header *rom_header,
154 struct pci_rom_header **ram_headerp, bool *allocedp)
155{
156 struct pci_rom_data *rom_data;
157 unsigned int rom_size;
158 unsigned int image_size = 0;
159 void *target;
160
161 *allocedp = false;
162 do {
163
164 rom_header = (struct pci_rom_header *)((void *)rom_header +
165 image_size);
166
167 rom_data = (struct pci_rom_data *)((void *)rom_header +
168 le16_to_cpu(rom_header->data));
169
170 image_size = le16_to_cpu(rom_data->ilen) * 512;
171 } while ((rom_data->type != 0) && (rom_data->indicator == 0));
172
173 if (rom_data->type != 0)
174 return -EACCES;
175
176 rom_size = rom_header->size * 512;
177
178#ifdef PCI_VGA_RAM_IMAGE_START
179 target = (void *)PCI_VGA_RAM_IMAGE_START;
180#else
181 target = (void *)malloc(rom_size);
182 if (!target)
183 return -ENOMEM;
184 *allocedp = true;
185#endif
186 if (target != rom_header) {
187 ulong start = get_timer(0);
188
189 debug("Copying VGA ROM Image from %p to %p, 0x%x bytes\n",
190 rom_header, target, rom_size);
191 memcpy(target, rom_header, rom_size);
192 if (memcmp(target, rom_header, rom_size)) {
193 printf("VGA ROM copy failed\n");
194 return -EFAULT;
195 }
196 debug("Copy took %lums\n", get_timer(start));
197 }
198 *ram_headerp = target;
199
200 return 0;
201}
202
203struct vbe_mode_info mode_info;
204
205void setup_video(struct screen_info *screen_info)
206{
207 struct vesa_mode_info *vesa = &mode_info.vesa;
208
209
210 if (!vesa->x_resolution || !vesa->y_resolution)
211 return;
212
213 screen_info->orig_video_isVGA = VIDEO_TYPE_VLFB;
214
215 screen_info->lfb_width = vesa->x_resolution;
216 screen_info->lfb_height = vesa->y_resolution;
217 screen_info->lfb_depth = vesa->bits_per_pixel;
218 screen_info->lfb_linelength = vesa->bytes_per_scanline;
219 screen_info->lfb_base = vesa->phys_base_ptr;
220 screen_info->lfb_size =
221 ALIGN(screen_info->lfb_linelength * screen_info->lfb_height,
222 65536);
223 screen_info->lfb_size >>= 16;
224 screen_info->red_size = vesa->red_mask_size;
225 screen_info->red_pos = vesa->red_mask_pos;
226 screen_info->green_size = vesa->green_mask_size;
227 screen_info->green_pos = vesa->green_mask_pos;
228 screen_info->blue_size = vesa->blue_mask_size;
229 screen_info->blue_pos = vesa->blue_mask_pos;
230 screen_info->rsvd_size = vesa->reserved_mask_size;
231 screen_info->rsvd_pos = vesa->reserved_mask_pos;
232}
233
234int dm_pci_run_vga_bios(struct udevice *dev, int (*int15_handler)(void),
235 int exec_method)
236{
237 struct pci_child_platdata *pplat = dev_get_parent_platdata(dev);
238 struct pci_rom_header *rom = NULL, *ram = NULL;
239 int vesa_mode = -1;
240 bool emulate, alloced;
241 int ret;
242
243
244 if (((pplat->class >> 8) ^ PCI_CLASS_DISPLAY_VGA) & 0xff00) {
245 debug("%s: Class %#x, should be %#x\n", __func__, pplat->class,
246 PCI_CLASS_DISPLAY_VGA);
247 return -ENODEV;
248 }
249
250 if (!board_should_load_oprom(dev))
251 return -ENXIO;
252
253 ret = pci_rom_probe(dev, &rom);
254 if (ret)
255 return ret;
256
257 ret = pci_rom_load(rom, &ram, &alloced);
258 if (ret)
259 goto err;
260
261 if (!board_should_run_oprom(dev)) {
262 ret = -ENXIO;
263 goto err;
264 }
265
266#if defined(CONFIG_FRAMEBUFFER_SET_VESA_MODE) && \
267 defined(CONFIG_FRAMEBUFFER_VESA_MODE)
268 vesa_mode = CONFIG_FRAMEBUFFER_VESA_MODE;
269#endif
270 debug("Selected vesa mode %#x\n", vesa_mode);
271
272 if (exec_method & PCI_ROM_USE_NATIVE) {
273#ifdef CONFIG_X86
274 emulate = false;
275#else
276 if (!(exec_method & PCI_ROM_ALLOW_FALLBACK)) {
277 printf("BIOS native execution is only available on x86\n");
278 ret = -ENOSYS;
279 goto err;
280 }
281 emulate = true;
282#endif
283 } else {
284#ifdef CONFIG_BIOSEMU
285 emulate = true;
286#else
287 if (!(exec_method & PCI_ROM_ALLOW_FALLBACK)) {
288 printf("BIOS emulation not available - see CONFIG_BIOSEMU\n");
289 ret = -ENOSYS;
290 goto err;
291 }
292 emulate = false;
293#endif
294 }
295
296 if (emulate) {
297#ifdef CONFIG_BIOSEMU
298 BE_VGAInfo *info;
299
300 ret = biosemu_setup(dev, &info);
301 if (ret)
302 goto err;
303 biosemu_set_interrupt_handler(0x15, int15_handler);
304 ret = biosemu_run(dev, (uchar *)ram, 1 << 16, info,
305 true, vesa_mode, &mode_info);
306 if (ret)
307 goto err;
308#endif
309 } else {
310#if defined(CONFIG_X86) && CONFIG_IS_ENABLED(X86_32BIT_INIT)
311 bios_set_interrupt_handler(0x15, int15_handler);
312
313 bios_run_on_x86(dev, (unsigned long)ram, vesa_mode,
314 &mode_info);
315#endif
316 }
317 debug("Final vesa mode %#x\n", mode_info.video_mode);
318 ret = 0;
319
320err:
321 if (alloced)
322 free(ram);
323 return ret;
324}
325
326#ifdef CONFIG_DM_VIDEO
327int vbe_setup_video_priv(struct vesa_mode_info *vesa,
328 struct video_priv *uc_priv,
329 struct video_uc_platdata *plat)
330{
331 if (!vesa->x_resolution)
332 return -ENXIO;
333 uc_priv->xsize = vesa->x_resolution;
334 uc_priv->ysize = vesa->y_resolution;
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 printf("Video: ");
359
360
361 if (!ll_boot_init()) {
362 printf("Not available (previous bootloader prevents it)\n");
363 return -EPERM;
364 }
365 bootstage_start(BOOTSTAGE_ID_ACCUM_LCD, "vesa display");
366 ret = dm_pci_run_vga_bios(dev, int15_handler, PCI_ROM_USE_NATIVE |
367 PCI_ROM_ALLOW_FALLBACK);
368 bootstage_accum(BOOTSTAGE_ID_ACCUM_LCD);
369 if (ret) {
370 debug("failed to run video BIOS: %d\n", ret);
371 return ret;
372 }
373
374 ret = vbe_setup_video_priv(&mode_info.vesa, uc_priv, plat);
375 if (ret) {
376 debug("No video mode configured\n");
377 return ret;
378 }
379
380 printf("%dx%dx%d\n", uc_priv->xsize, uc_priv->ysize,
381 mode_info.vesa.bits_per_pixel);
382
383 return 0;
384}
385#endif
386
