1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (C) 2016, Bin Meng <bmeng.cn (at) 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 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 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
