1 // SPDX-License-Identifier: GPL-2.0+
3 * EFI application disk support
5 * Copyright (c) 2016 Alexander Graf
10 #include <efi_loader.h>
14 #include <asm/global_data.h>
16 DECLARE_GLOBAL_DATA_PTR;
18 static const efi_guid_t efi_gop_guid = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID;
21 * struct efi_gop_obj - graphical output protocol object
23 * @header: EFI object header
24 * @ops: graphical output protocol interface
25 * @info: graphical output mode information
26 * @mode: graphical output mode
27 * @bpix: bits per pixel
31 struct efi_object header;
33 struct efi_gop_mode_info info;
34 struct efi_gop_mode mode;
35 /* Fields we only have access to during init */
40 static efi_status_t EFIAPI gop_query_mode(struct efi_gop *this, u32 mode_number,
41 efi_uintn_t *size_of_info,
42 struct efi_gop_mode_info **info)
44 struct efi_gop_obj *gopobj;
45 efi_status_t ret = EFI_SUCCESS;
47 EFI_ENTRY("%p, %x, %p, %p", this, mode_number, size_of_info, info);
49 if (!this || !size_of_info || !info || mode_number) {
50 ret = EFI_INVALID_PARAMETER;
54 gopobj = container_of(this, struct efi_gop_obj, ops);
55 ret = efi_allocate_pool(EFI_BOOT_SERVICES_DATA, sizeof(gopobj->info),
57 if (ret != EFI_SUCCESS)
59 *size_of_info = sizeof(gopobj->info);
60 memcpy(*info, &gopobj->info, sizeof(gopobj->info));
66 static __always_inline struct efi_gop_pixel efi_vid30_to_blt_col(u32 vid)
68 struct efi_gop_pixel blt = {
72 blt.blue = (vid & 0x3ff) >> 2;
74 blt.green = (vid & 0x3ff) >> 2;
76 blt.red = (vid & 0x3ff) >> 2;
80 static __always_inline u32 efi_blt_col_to_vid30(struct efi_gop_pixel *blt)
82 return (u32)(blt->red << 2) << 20 |
83 (u32)(blt->green << 2) << 10 |
84 (u32)(blt->blue << 2);
87 static __always_inline struct efi_gop_pixel efi_vid16_to_blt_col(u16 vid)
89 struct efi_gop_pixel blt = {
93 blt.blue = (vid & 0x1f) << 3;
95 blt.green = (vid & 0x3f) << 2;
97 blt.red = (vid & 0x1f) << 3;
101 static __always_inline u16 efi_blt_col_to_vid16(struct efi_gop_pixel *blt)
103 return (u16)(blt->red >> 3) << 11 |
104 (u16)(blt->green >> 2) << 5 |
105 (u16)(blt->blue >> 3);
108 static __always_inline efi_status_t gop_blt_int(struct efi_gop *this,
109 struct efi_gop_pixel *bufferp,
110 u32 operation, efi_uintn_t sx,
111 efi_uintn_t sy, efi_uintn_t dx,
118 struct efi_gop_obj *gopobj = container_of(this, struct efi_gop_obj, ops);
119 efi_uintn_t i, j, linelen, slineoff = 0, dlineoff, swidth, dwidth;
120 u32 *fb32 = gopobj->fb;
121 u16 *fb16 = gopobj->fb;
122 struct efi_gop_pixel *buffer = __builtin_assume_aligned(bufferp, 4);
125 /* Check for 4 byte alignment */
127 return EFI_INVALID_PARAMETER;
128 linelen = delta >> 2;
133 /* Check source rectangle */
135 case EFI_BLT_VIDEO_FILL:
137 case EFI_BLT_BUFFER_TO_VIDEO:
138 if (sx + width > linelen)
139 return EFI_INVALID_PARAMETER;
141 case EFI_BLT_VIDEO_TO_BLT_BUFFER:
142 case EFI_BLT_VIDEO_TO_VIDEO:
143 if (sx + width > gopobj->info.width ||
144 sy + height > gopobj->info.height)
145 return EFI_INVALID_PARAMETER;
148 return EFI_INVALID_PARAMETER;
151 /* Check destination rectangle */
153 case EFI_BLT_VIDEO_FILL:
154 case EFI_BLT_BUFFER_TO_VIDEO:
155 case EFI_BLT_VIDEO_TO_VIDEO:
156 if (dx + width > gopobj->info.width ||
157 dy + height > gopobj->info.height)
158 return EFI_INVALID_PARAMETER;
160 case EFI_BLT_VIDEO_TO_BLT_BUFFER:
161 if (dx + width > linelen)
162 return EFI_INVALID_PARAMETER;
166 /* Calculate line width */
168 case EFI_BLT_BUFFER_TO_VIDEO:
171 case EFI_BLT_VIDEO_TO_BLT_BUFFER:
172 case EFI_BLT_VIDEO_TO_VIDEO:
173 swidth = gopobj->info.width;
175 return EFI_UNSUPPORTED;
177 case EFI_BLT_VIDEO_FILL:
183 case EFI_BLT_BUFFER_TO_VIDEO:
184 case EFI_BLT_VIDEO_FILL:
185 case EFI_BLT_VIDEO_TO_VIDEO:
186 dwidth = gopobj->info.width;
188 return EFI_UNSUPPORTED;
190 case EFI_BLT_VIDEO_TO_BLT_BUFFER:
195 slineoff = swidth * sy;
196 dlineoff = dwidth * dy;
197 for (i = 0; i < height; i++) {
198 for (j = 0; j < width; j++) {
199 struct efi_gop_pixel pix;
201 /* Read source pixel */
203 case EFI_BLT_VIDEO_FILL:
206 case EFI_BLT_BUFFER_TO_VIDEO:
207 pix = buffer[slineoff + j + sx];
209 case EFI_BLT_VIDEO_TO_BLT_BUFFER:
210 case EFI_BLT_VIDEO_TO_VIDEO:
212 pix = *(struct efi_gop_pixel *)&fb32[
214 else if (vid_bpp == 30)
215 pix = efi_vid30_to_blt_col(fb32[
218 pix = efi_vid16_to_blt_col(fb16[
223 /* Write destination pixel */
225 case EFI_BLT_VIDEO_TO_BLT_BUFFER:
226 buffer[dlineoff + j + dx] = pix;
228 case EFI_BLT_BUFFER_TO_VIDEO:
229 case EFI_BLT_VIDEO_FILL:
230 case EFI_BLT_VIDEO_TO_VIDEO:
232 fb32[dlineoff + j + dx] = *(u32 *)&pix;
233 else if (vid_bpp == 30)
234 fb32[dlineoff + j + dx] =
235 efi_blt_col_to_vid30(&pix);
237 fb16[dlineoff + j + dx] =
238 efi_blt_col_to_vid16(&pix);
249 static efi_uintn_t gop_get_bpp(struct efi_gop *this)
251 struct efi_gop_obj *gopobj = container_of(this, struct efi_gop_obj, ops);
252 efi_uintn_t vid_bpp = 0;
254 switch (gopobj->bpix) {
255 #ifdef CONFIG_DM_VIDEO
260 if (gopobj->info.pixel_format == EFI_GOT_BGRA8)
265 #ifdef CONFIG_DM_VIDEO
278 * GCC can't optimize our BLT function well, but we need to make sure that
279 * our 2-dimensional loop gets executed very quickly, otherwise the system
282 * By manually putting all obvious branch targets into functions which call
283 * our generic BLT function with constants, the compiler can successfully
284 * optimize for speed.
286 static efi_status_t gop_blt_video_fill(struct efi_gop *this,
287 struct efi_gop_pixel *buffer,
288 u32 foo, efi_uintn_t sx,
289 efi_uintn_t sy, efi_uintn_t dx,
290 efi_uintn_t dy, efi_uintn_t width,
291 efi_uintn_t height, efi_uintn_t delta,
294 return gop_blt_int(this, buffer, EFI_BLT_VIDEO_FILL, sx, sy, dx,
295 dy, width, height, delta, vid_bpp);
298 static efi_status_t gop_blt_buf_to_vid16(struct efi_gop *this,
299 struct efi_gop_pixel *buffer,
300 u32 foo, efi_uintn_t sx,
301 efi_uintn_t sy, efi_uintn_t dx,
302 efi_uintn_t dy, efi_uintn_t width,
303 efi_uintn_t height, efi_uintn_t delta)
305 return gop_blt_int(this, buffer, EFI_BLT_BUFFER_TO_VIDEO, sx, sy, dx,
306 dy, width, height, delta, 16);
309 static efi_status_t gop_blt_buf_to_vid30(struct efi_gop *this,
310 struct efi_gop_pixel *buffer,
311 u32 foo, efi_uintn_t sx,
312 efi_uintn_t sy, efi_uintn_t dx,
313 efi_uintn_t dy, efi_uintn_t width,
314 efi_uintn_t height, efi_uintn_t delta)
316 return gop_blt_int(this, buffer, EFI_BLT_BUFFER_TO_VIDEO, sx, sy, dx,
317 dy, width, height, delta, 30);
320 static efi_status_t gop_blt_buf_to_vid32(struct efi_gop *this,
321 struct efi_gop_pixel *buffer,
322 u32 foo, efi_uintn_t sx,
323 efi_uintn_t sy, efi_uintn_t dx,
324 efi_uintn_t dy, efi_uintn_t width,
325 efi_uintn_t height, efi_uintn_t delta)
327 return gop_blt_int(this, buffer, EFI_BLT_BUFFER_TO_VIDEO, sx, sy, dx,
328 dy, width, height, delta, 32);
331 static efi_status_t gop_blt_vid_to_vid(struct efi_gop *this,
332 struct efi_gop_pixel *buffer,
333 u32 foo, efi_uintn_t sx,
334 efi_uintn_t sy, efi_uintn_t dx,
335 efi_uintn_t dy, efi_uintn_t width,
336 efi_uintn_t height, efi_uintn_t delta,
339 return gop_blt_int(this, buffer, EFI_BLT_VIDEO_TO_VIDEO, sx, sy, dx,
340 dy, width, height, delta, vid_bpp);
343 static efi_status_t gop_blt_vid_to_buf(struct efi_gop *this,
344 struct efi_gop_pixel *buffer,
345 u32 foo, efi_uintn_t sx,
346 efi_uintn_t sy, efi_uintn_t dx,
347 efi_uintn_t dy, efi_uintn_t width,
348 efi_uintn_t height, efi_uintn_t delta,
351 return gop_blt_int(this, buffer, EFI_BLT_VIDEO_TO_BLT_BUFFER, sx, sy,
352 dx, dy, width, height, delta, vid_bpp);
356 * gop_set_mode() - set graphical output mode
358 * This function implements the SetMode() service.
360 * See the Unified Extensible Firmware Interface (UEFI) specification for
363 * @this: the graphical output protocol
364 * @mode_number: the mode to be set
365 * Return: status code
367 static efi_status_t EFIAPI gop_set_mode(struct efi_gop *this, u32 mode_number)
369 struct efi_gop_obj *gopobj;
370 struct efi_gop_pixel buffer = {0, 0, 0, 0};
372 efi_status_t ret = EFI_SUCCESS;
374 EFI_ENTRY("%p, %x", this, mode_number);
377 ret = EFI_INVALID_PARAMETER;
381 ret = EFI_UNSUPPORTED;
384 gopobj = container_of(this, struct efi_gop_obj, ops);
385 vid_bpp = gop_get_bpp(this);
386 ret = gop_blt_video_fill(this, &buffer, EFI_BLT_VIDEO_FILL, 0, 0, 0, 0,
387 gopobj->info.width, gopobj->info.height, 0,
390 return EFI_EXIT(ret);
396 * This function implements the Blt service of the EFI_GRAPHICS_OUTPUT_PROTOCOL.
397 * See the Unified Extensible Firmware Interface (UEFI) specification for
400 * @this: EFI_GRAPHICS_OUTPUT_PROTOCOL
401 * @buffer: pixel buffer
402 * @sx: source x-coordinate
403 * @sy: source y-coordinate
404 * @dx: destination x-coordinate
405 * @dy: destination y-coordinate
406 * @width: width of rectangle
407 * @height: height of rectangle
408 * @delta: length in bytes of a line in the pixel buffer (optional)
409 * Return: status code
411 efi_status_t EFIAPI gop_blt(struct efi_gop *this, struct efi_gop_pixel *buffer,
412 u32 operation, efi_uintn_t sx,
413 efi_uintn_t sy, efi_uintn_t dx,
414 efi_uintn_t dy, efi_uintn_t width,
415 efi_uintn_t height, efi_uintn_t delta)
417 efi_status_t ret = EFI_INVALID_PARAMETER;
420 EFI_ENTRY("%p, %p, %u, %zu, %zu, %zu, %zu, %zu, %zu, %zu", this,
421 buffer, operation, sx, sy, dx, dy, width, height, delta);
423 vid_bpp = gop_get_bpp(this);
425 /* Allow for compiler optimization */
427 case EFI_BLT_VIDEO_FILL:
428 ret = gop_blt_video_fill(this, buffer, operation, sx, sy, dx,
429 dy, width, height, delta, vid_bpp);
431 case EFI_BLT_BUFFER_TO_VIDEO:
432 /* This needs to be super-fast, so duplicate for 16/32bpp */
434 ret = gop_blt_buf_to_vid32(this, buffer, operation, sx,
435 sy, dx, dy, width, height,
437 else if (vid_bpp == 30)
438 ret = gop_blt_buf_to_vid30(this, buffer, operation, sx,
439 sy, dx, dy, width, height,
442 ret = gop_blt_buf_to_vid16(this, buffer, operation, sx,
443 sy, dx, dy, width, height,
446 case EFI_BLT_VIDEO_TO_VIDEO:
447 ret = gop_blt_vid_to_vid(this, buffer, operation, sx, sy, dx,
448 dy, width, height, delta, vid_bpp);
450 case EFI_BLT_VIDEO_TO_BLT_BUFFER:
451 ret = gop_blt_vid_to_buf(this, buffer, operation, sx, sy, dx,
452 dy, width, height, delta, vid_bpp);
455 ret = EFI_INVALID_PARAMETER;
458 if (ret != EFI_SUCCESS)
459 return EFI_EXIT(ret);
463 return EFI_EXIT(EFI_SUCCESS);
467 * Install graphical output protocol.
469 * If no supported video device exists this is not considered as an
472 efi_status_t efi_gop_register(void)
474 struct efi_gop_obj *gopobj;
475 u32 bpix, format, col, row;
476 u64 fb_base, fb_size;
480 #ifdef CONFIG_DM_VIDEO
481 struct udevice *vdev;
482 struct video_priv *priv;
484 /* We only support a single video output device for now */
485 if (uclass_first_device(UCLASS_VIDEO, &vdev) || !vdev) {
486 debug("WARNING: No video device\n");
490 priv = dev_get_uclass_priv(vdev);
492 format = priv->format;
493 col = video_get_xsize(vdev);
494 row = video_get_ysize(vdev);
495 fb_base = (uintptr_t)priv->fb;
496 fb_size = priv->fb_size;
501 bpix = panel_info.vl_bpix;
502 format = VIDEO_UNKNOWN;
503 col = panel_info.vl_col;
504 row = panel_info.vl_row;
505 fb_base = gd->fb_base;
506 fb_size = lcd_get_size(&line_len);
507 fb = (void*)gd->fb_base;
511 #ifdef CONFIG_DM_VIDEO
520 /* So far, we only work in 16 or 32 bit mode */
521 debug("WARNING: Unsupported video mode\n");
525 gopobj = calloc(1, sizeof(*gopobj));
527 printf("ERROR: Out of memory\n");
528 return EFI_OUT_OF_RESOURCES;
531 /* Hook up to the device list */
532 efi_add_handle(&gopobj->header);
534 /* Fill in object data */
535 ret = efi_add_protocol(&gopobj->header, &efi_gop_guid,
537 if (ret != EFI_SUCCESS) {
538 printf("ERROR: Failure adding GOP protocol\n");
541 gopobj->ops.query_mode = gop_query_mode;
542 gopobj->ops.set_mode = gop_set_mode;
543 gopobj->ops.blt = gop_blt;
544 gopobj->ops.mode = &gopobj->mode;
546 gopobj->mode.max_mode = 1;
547 gopobj->mode.info = &gopobj->info;
548 gopobj->mode.info_size = sizeof(gopobj->info);
550 gopobj->mode.fb_base = fb_base;
551 gopobj->mode.fb_size = fb_size;
553 gopobj->info.version = 0;
554 gopobj->info.width = col;
555 gopobj->info.height = row;
556 #ifdef CONFIG_DM_VIDEO
557 if (bpix == VIDEO_BPP32)
559 if (bpix == LCD_COLOR32)
562 if (format == VIDEO_X2R10G10B10) {
563 gopobj->info.pixel_format = EFI_GOT_BITMASK;
564 gopobj->info.pixel_bitmask[0] = 0x3ff00000; /* red */
565 gopobj->info.pixel_bitmask[1] = 0x000ffc00; /* green */
566 gopobj->info.pixel_bitmask[2] = 0x000003ff; /* blue */
567 gopobj->info.pixel_bitmask[3] = 0xc0000000; /* reserved */
569 gopobj->info.pixel_format = EFI_GOT_BGRA8;
572 gopobj->info.pixel_format = EFI_GOT_BITMASK;
573 gopobj->info.pixel_bitmask[0] = 0xf800; /* red */
574 gopobj->info.pixel_bitmask[1] = 0x07e0; /* green */
575 gopobj->info.pixel_bitmask[2] = 0x001f; /* blue */
577 gopobj->info.pixels_per_scanline = col;