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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_fb.h>
35#include <linux/screen_info.h>
36
37__weak bool board_should_run_oprom(struct udevice *dev)
38{
39 return true;
40}
41
42__weak bool board_should_load_oprom(struct udevice *dev)
43{
44 return true;
45}
46
47__weak uint32_t board_map_oprom_vendev(uint32_t vendev)
48{
49 return vendev;
50}
51
52static int pci_rom_probe(struct udevice *dev, struct pci_rom_header **hdrp)
53{
54 struct pci_child_platdata *pplat = dev_get_parent_platdata(dev);
55 struct pci_rom_header *rom_header;
56 struct pci_rom_data *rom_data;
57 u16 rom_vendor, rom_device;
58 u32 rom_class;
59 u32 vendev;
60 u32 mapped_vendev;
61 u32 rom_address;
62
63 vendev = pplat->vendor << 16 | pplat->device;
64 mapped_vendev = board_map_oprom_vendev(vendev);
65 if (vendev != mapped_vendev)
66 debug("Device ID mapped to %#08x\n", mapped_vendev);
67
68#ifdef CONFIG_VGA_BIOS_ADDR
69 rom_address = CONFIG_VGA_BIOS_ADDR;
70#else
71
72 dm_pci_read_config32(dev, PCI_ROM_ADDRESS, &rom_address);
73 if (rom_address == 0x00000000 || rom_address == 0xffffffff) {
74 debug("%s: rom_address=%x\n", __func__, rom_address);
75 return -ENOENT;
76 }
77
78
79 dm_pci_write_config32(dev, PCI_ROM_ADDRESS,
80 rom_address | PCI_ROM_ADDRESS_ENABLE);
81#endif
82 debug("Option ROM address %x\n", rom_address);
83 rom_header = (struct pci_rom_header *)(unsigned long)rom_address;
84
85 debug("PCI expansion ROM, signature %#04x, INIT size %#04x, data ptr %#04x\n",
86 le16_to_cpu(rom_header->signature),
87 rom_header->size * 512, le16_to_cpu(rom_header->data));
88
89 if (le16_to_cpu(rom_header->signature) != PCI_ROM_HDR) {
90 printf("Incorrect expansion ROM header signature %04x\n",
91 le16_to_cpu(rom_header->signature));
92#ifndef CONFIG_VGA_BIOS_ADDR
93
94 dm_pci_write_config32(dev, PCI_ROM_ADDRESS, rom_address);
95#endif
96 return -EINVAL;
97 }
98
99 rom_data = (((void *)rom_header) + le16_to_cpu(rom_header->data));
100 rom_vendor = le16_to_cpu(rom_data->vendor);
101 rom_device = le16_to_cpu(rom_data->device);
102
103 debug("PCI ROM image, vendor ID %04x, device ID %04x,\n",
104 rom_vendor, rom_device);
105
106
107 if ((pplat->vendor != rom_vendor || pplat->device != rom_device) &&
108 (vendev == mapped_vendev)) {
109 printf("ID mismatch: vendor ID %04x, device ID %04x\n",
110 rom_vendor, rom_device);
111
112 }
113
114 rom_class = (le16_to_cpu(rom_data->class_hi) << 8) | rom_data->class_lo;
115 debug("PCI ROM image, Class Code %06x, Code Type %02x\n",
116 rom_class, rom_data->type);
117
118 if (pplat->class != rom_class) {
119 debug("Class Code mismatch ROM %06x, dev %06x\n",
120 rom_class, pplat->class);
121 }
122 *hdrp = rom_header;
123
124 return 0;
125}
126
127
128
129
130
131
132
133
134
135
136
137
138static int pci_rom_load(struct pci_rom_header *rom_header,
139 struct pci_rom_header **ram_headerp, bool *allocedp)
140{
141 struct pci_rom_data *rom_data;
142 unsigned int rom_size;
143 unsigned int image_size = 0;
144 void *target;
145
146 *allocedp = false;
147 do {
148
149 rom_header = (struct pci_rom_header *)((void *)rom_header +
150 image_size);
151
152 rom_data = (struct pci_rom_data *)((void *)rom_header +
153 le16_to_cpu(rom_header->data));
154
155 image_size = le16_to_cpu(rom_data->ilen) * 512;
156 } while ((rom_data->type != 0) && (rom_data->indicator == 0));
157
158 if (rom_data->type != 0)
159 return -EACCES;
160
161 rom_size = rom_header->size * 512;
162
163#ifdef PCI_VGA_RAM_IMAGE_START
164 target = (void *)PCI_VGA_RAM_IMAGE_START;
165#else
166 target = (void *)malloc(rom_size);
167 if (!target)
168 return -ENOMEM;
169 *allocedp = true;
170#endif
171 if (target != rom_header) {
172 ulong start = get_timer(0);
173
174 debug("Copying VGA ROM Image from %p to %p, 0x%x bytes\n",
175 rom_header, target, rom_size);
176 memcpy(target, rom_header, rom_size);
177 if (memcmp(target, rom_header, rom_size)) {
178 printf("VGA ROM copy failed\n");
179 return -EFAULT;
180 }
181 debug("Copy took %lums\n", get_timer(start));
182 }
183 *ram_headerp = target;
184
185 return 0;
186}
187
188struct vbe_mode_info mode_info;
189
190int vbe_get_video_info(struct graphic_device *gdev)
191{
192#ifdef CONFIG_FRAMEBUFFER_SET_VESA_MODE
193 struct vesa_mode_info *vesa = &mode_info.vesa;
194
195 gdev->winSizeX = vesa->x_resolution;
196 gdev->winSizeY = vesa->y_resolution;
197
198 gdev->plnSizeX = vesa->x_resolution;
199 gdev->plnSizeY = vesa->y_resolution;
200
201 gdev->gdfBytesPP = vesa->bits_per_pixel / 8;
202
203 switch (vesa->bits_per_pixel) {
204 case 32:
205 case 24:
206 gdev->gdfIndex = GDF_32BIT_X888RGB;
207 break;
208 case 16:
209 gdev->gdfIndex = GDF_16BIT_565RGB;
210 break;
211 default:
212 gdev->gdfIndex = GDF__8BIT_INDEX;
213 break;
214 }
215
216 gdev->isaBase = CONFIG_SYS_ISA_IO_BASE_ADDRESS;
217 gdev->pciBase = vesa->phys_base_ptr;
218
219 gdev->frameAdrs = vesa->phys_base_ptr;
220 gdev->memSize = vesa->bytes_per_scanline * vesa->y_resolution;
221
222 gdev->vprBase = vesa->phys_base_ptr;
223 gdev->cprBase = vesa->phys_base_ptr;
224
225 return gdev->winSizeX ? 0 : -ENOSYS;
226#else
227 return -ENOSYS;
228#endif
229}
230
231void setup_video(struct screen_info *screen_info)
232{
233 struct vesa_mode_info *vesa = &mode_info.vesa;
234
235
236 if (!vesa->x_resolution || !vesa->y_resolution)
237 return;
238
239 screen_info->orig_video_isVGA = VIDEO_TYPE_VLFB;
240
241 screen_info->lfb_width = vesa->x_resolution;
242 screen_info->lfb_height = vesa->y_resolution;
243 screen_info->lfb_depth = vesa->bits_per_pixel;
244 screen_info->lfb_linelength = vesa->bytes_per_scanline;
245 screen_info->lfb_base = vesa->phys_base_ptr;
246 screen_info->lfb_size =
247 ALIGN(screen_info->lfb_linelength * screen_info->lfb_height,
248 65536);
249 screen_info->lfb_size >>= 16;
250 screen_info->red_size = vesa->red_mask_size;
251 screen_info->red_pos = vesa->red_mask_pos;
252 screen_info->green_size = vesa->green_mask_size;
253 screen_info->green_pos = vesa->green_mask_pos;
254 screen_info->blue_size = vesa->blue_mask_size;
255 screen_info->blue_pos = vesa->blue_mask_pos;
256 screen_info->rsvd_size = vesa->reserved_mask_size;
257 screen_info->rsvd_pos = vesa->reserved_mask_pos;
258}
259
260int dm_pci_run_vga_bios(struct udevice *dev, int (*int15_handler)(void),
261 int exec_method)
262{
263 struct pci_child_platdata *pplat = dev_get_parent_platdata(dev);
264 struct pci_rom_header *rom = NULL, *ram = NULL;
265 int vesa_mode = -1;
266 bool emulate, alloced;
267 int ret;
268
269
270 if (((pplat->class >> 8) ^ PCI_CLASS_DISPLAY_VGA) & 0xff00) {
271 debug("%s: Class %#x, should be %#x\n", __func__, pplat->class,
272 PCI_CLASS_DISPLAY_VGA);
273 return -ENODEV;
274 }
275
276 if (!board_should_load_oprom(dev))
277 return -ENXIO;
278
279 ret = pci_rom_probe(dev, &rom);
280 if (ret)
281 return ret;
282
283 ret = pci_rom_load(rom, &ram, &alloced);
284 if (ret)
285 goto err;
286
287 if (!board_should_run_oprom(dev)) {
288 ret = -ENXIO;
289 goto err;
290 }
291
292#if defined(CONFIG_FRAMEBUFFER_SET_VESA_MODE) && \
293 defined(CONFIG_FRAMEBUFFER_VESA_MODE)
294 vesa_mode = CONFIG_FRAMEBUFFER_VESA_MODE;
295#endif
296 debug("Selected vesa mode %#x\n", vesa_mode);
297
298 if (exec_method & PCI_ROM_USE_NATIVE) {
299#ifdef CONFIG_X86
300 emulate = false;
301#else
302 if (!(exec_method & PCI_ROM_ALLOW_FALLBACK)) {
303 printf("BIOS native execution is only available on x86\n");
304 ret = -ENOSYS;
305 goto err;
306 }
307 emulate = true;
308#endif
309 } else {
310#ifdef CONFIG_BIOSEMU
311 emulate = true;
312#else
313 if (!(exec_method & PCI_ROM_ALLOW_FALLBACK)) {
314 printf("BIOS emulation not available - see CONFIG_BIOSEMU\n");
315 ret = -ENOSYS;
316 goto err;
317 }
318 emulate = false;
319#endif
320 }
321
322 if (emulate) {
323#ifdef CONFIG_BIOSEMU
324 BE_VGAInfo *info;
325
326 ret = biosemu_setup(dev, &info);
327 if (ret)
328 goto err;
329 biosemu_set_interrupt_handler(0x15, int15_handler);
330 ret = biosemu_run(dev, (uchar *)ram, 1 << 16, info,
331 true, vesa_mode, &mode_info);
332 if (ret)
333 goto err;
334#endif
335 } else {
336#ifdef CONFIG_X86
337 bios_set_interrupt_handler(0x15, int15_handler);
338
339 bios_run_on_x86(dev, (unsigned long)ram, vesa_mode,
340 &mode_info);
341#endif
342 }
343 debug("Final vesa mode %#x\n", mode_info.video_mode);
344 ret = 0;
345
346err:
347 if (alloced)
348 free(ram);
349 return ret;
350}
351
