blob: 3a94aa14728b3dd9feb2c57636cdf0a662bc77b4 [file] [log] [blame]
Bin Meng13b2bfc2016-10-09 04:14:16 -07001/*
2 * Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com>
3 *
4 * SPDX-License-Identifier: GPL-2.0+
5 */
6
7#include <common.h>
8#include <dm.h>
9#include <vbe.h>
10#include <video.h>
11#include <asm/arch/sysinfo.h>
12
13static 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 -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
40static int coreboot_video_probe(struct udevice *dev)
41{
42 struct video_uc_platdata *plat = dev_get_uclass_platdata(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 printf("Video: ");
49
50 /* Initialize vesa_mode_info structure */
51 ret = save_vesa_mode(fb, vesa);
52 if (ret)
53 goto err;
54
55 ret = vbe_setup_video_priv(vesa, uc_priv, plat);
56 if (ret)
57 goto err;
58
59 printf("%dx%dx%d\n", uc_priv->xsize, uc_priv->ysize,
60 vesa->bits_per_pixel);
61
62 return 0;
63
64err:
65 printf("No video mode configured in coreboot!\n");
66 return ret;
67}
68
69static const struct udevice_id coreboot_video_ids[] = {
70 { .compatible = "coreboot-fb" },
71 { }
72};
73
74U_BOOT_DRIVER(coreboot_video) = {
75 .name = "coreboot_video",
76 .id = UCLASS_VIDEO,
77 .of_match = coreboot_video_ids,
78 .probe = coreboot_video_probe,
79};