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 <init.h>
9 #include <vesa.h>
10 #include <video.h>
11 #include <asm/cb_sysinfo.h>
12
save_vesa_mode(struct cb_framebuffer * fb,struct vesa_mode_info * vesa)13 static int save_vesa_mode(struct cb_framebuffer *fb,
14 struct vesa_mode_info *vesa)
15 {
16 /*
17 * If there is no framebuffer structure, bail out and keep
18 * running on the serial console.
19 */
20 if (!fb)
21 return log_msg_ret("save", -ENXIO);
22
23 vesa->x_resolution = fb->x_resolution;
24 vesa->y_resolution = fb->y_resolution;
25 vesa->bits_per_pixel = fb->bits_per_pixel;
26 vesa->bytes_per_scanline = fb->bytes_per_line;
27 vesa->phys_base_ptr = fb->physical_address;
28 vesa->red_mask_size = fb->red_mask_size;
29 vesa->red_mask_pos = fb->red_mask_pos;
30 vesa->green_mask_size = fb->green_mask_size;
31 vesa->green_mask_pos = fb->green_mask_pos;
32 vesa->blue_mask_size = fb->blue_mask_size;
33 vesa->blue_mask_pos = fb->blue_mask_pos;
34 vesa->reserved_mask_size = fb->reserved_mask_size;
35 vesa->reserved_mask_pos = fb->reserved_mask_pos;
36
37 return 0;
38 }
39
coreboot_video_probe(struct udevice * dev)40 static int coreboot_video_probe(struct udevice *dev)
41 {
42 struct video_uc_plat *plat = dev_get_uclass_plat(dev);
43 struct video_priv *uc_priv = dev_get_uclass_priv(dev);
44 struct cb_framebuffer *fb = lib_sysinfo.framebuffer;
45 struct vesa_mode_info *vesa = &mode_info.vesa;
46 int ret;
47
48 if (ll_boot_init())
49 return log_msg_ret("ll", -ENODEV);
50
51 printf("Video: ");
52
53 /* Initialize vesa_mode_info structure */
54 ret = save_vesa_mode(fb, vesa);
55 if (ret) {
56 ret = log_msg_ret("save", ret);
57 goto err;
58 }
59
60 ret = vesa_setup_video_priv(vesa, vesa->phys_base_ptr, uc_priv, plat);
61 if (ret) {
62 ret = log_msg_ret("setup", ret);
63 goto err;
64 }
65
66 printf("%dx%dx%d\n", uc_priv->xsize, uc_priv->ysize,
67 vesa->bits_per_pixel);
68
69 return 0;
70
71 err:
72 printf("No video mode configured in coreboot (err=%d)\n", ret);
73 return ret;
74 }
75
76 static const struct udevice_id coreboot_video_ids[] = {
77 { .compatible = "coreboot-fb" },
78 { }
79 };
80
81 U_BOOT_DRIVER(coreboot_video) = {
82 .name = "coreboot_video",
83 .id = UCLASS_VIDEO,
84 .of_match = coreboot_video_ids,
85 .probe = coreboot_video_probe,
86 };
87