1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com>
4 */
5
6 #include <common.h>
7 #include <dm.h>
8 #include <vbe.h>
9 #include <video.h>
10 #include <asm/arch/sysinfo.h>
11
save_vesa_mode(struct cb_framebuffer * fb,struct vesa_mode_info * vesa)12 static int save_vesa_mode(struct cb_framebuffer *fb,
13 struct vesa_mode_info *vesa)
14 {
15 /*
16 * If there is no framebuffer structure, bail out and keep
17 * running on the serial console.
18 */
19 if (!fb)
20 return -ENXIO;
21
22 vesa->x_resolution = fb->x_resolution;
23 vesa->y_resolution = fb->y_resolution;
24 vesa->bits_per_pixel = fb->bits_per_pixel;
25 vesa->bytes_per_scanline = fb->bytes_per_line;
26 vesa->phys_base_ptr = fb->physical_address;
27 vesa->red_mask_size = fb->red_mask_size;
28 vesa->red_mask_pos = fb->red_mask_pos;
29 vesa->green_mask_size = fb->green_mask_size;
30 vesa->green_mask_pos = fb->green_mask_pos;
31 vesa->blue_mask_size = fb->blue_mask_size;
32 vesa->blue_mask_pos = fb->blue_mask_pos;
33 vesa->reserved_mask_size = fb->reserved_mask_size;
34 vesa->reserved_mask_pos = fb->reserved_mask_pos;
35
36 return 0;
37 }
38
coreboot_video_probe(struct udevice * dev)39 static int coreboot_video_probe(struct udevice *dev)
40 {
41 struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
42 struct video_priv *uc_priv = dev_get_uclass_priv(dev);
43 struct cb_framebuffer *fb = lib_sysinfo.framebuffer;
44 struct vesa_mode_info *vesa = &mode_info.vesa;
45 int ret;
46
47 printf("Video: ");
48
49 /* Initialize vesa_mode_info structure */
50 ret = save_vesa_mode(fb, vesa);
51 if (ret)
52 goto err;
53
54 ret = vbe_setup_video_priv(vesa, uc_priv, plat);
55 if (ret)
56 goto err;
57
58 printf("%dx%dx%d\n", uc_priv->xsize, uc_priv->ysize,
59 vesa->bits_per_pixel);
60
61 return 0;
62
63 err:
64 printf("No video mode configured in coreboot!\n");
65 return ret;
66 }
67
68 static const struct udevice_id coreboot_video_ids[] = {
69 { .compatible = "coreboot-fb" },
70 { }
71 };
72
73 U_BOOT_DRIVER(coreboot_video) = {
74 .name = "coreboot_video",
75 .id = UCLASS_VIDEO,
76 .of_match = coreboot_video_ids,
77 .probe = coreboot_video_probe,
78 };
79