1 /* SPDX-License-Identifier: GPL-2.0-only */
2
3 #include <cbfs.h>
4 #include <vbe.h>
5 #include <console/console.h>
6 #include <endian.h>
7 #include <bootsplash.h>
8
9 #include "jpeg.h"
10
11
set_bootsplash(unsigned char * framebuffer,unsigned int x_resolution,unsigned int y_resolution,unsigned int bytes_per_line,unsigned int fb_resolution)12 void set_bootsplash(unsigned char *framebuffer, unsigned int x_resolution,
13 unsigned int y_resolution, unsigned int bytes_per_line,
14 unsigned int fb_resolution)
15 {
16 if ((x_resolution > INT_MAX) || (y_resolution) > INT_MAX) {
17 printk(BIOS_ERR, "Display resolution way too large.\n");
18 return;
19 }
20 int xres = x_resolution, yres = y_resolution;
21 printk(BIOS_INFO, "Setting up bootsplash in %dx%d@%d\n", x_resolution, y_resolution,
22 fb_resolution);
23 size_t filesize;
24 unsigned char *jpeg = cbfs_map("bootsplash.jpg", &filesize);
25 if (!jpeg) {
26 printk(BIOS_ERR, "Could not find bootsplash.jpg\n");
27 return;
28 }
29
30 unsigned int image_width, image_height;
31 if (jpeg_fetch_size(jpeg, filesize, &image_width, &image_height) != 0) {
32 printk(BIOS_ERR, "Could not parse bootsplash.jpg\n");
33 return;
34 }
35
36 printk(BIOS_DEBUG, "Bootsplash image resolution: %dx%d\n", image_width, image_height);
37
38 if (image_width > xres || image_height > yres) {
39 printk(BIOS_NOTICE, "Bootsplash image can't fit framebuffer.\n");
40 cbfs_unmap(jpeg);
41 return;
42 }
43
44 /* center image: */
45 framebuffer += (yres - image_height) / 2 * bytes_per_line
46 + (xres - image_width) / 2 * (fb_resolution / 8);
47
48 int ret = jpeg_decode(jpeg, filesize, framebuffer, image_width, image_height,
49 bytes_per_line, fb_resolution);
50 cbfs_unmap(jpeg);
51 if (ret != 0) {
52 printk(BIOS_ERR, "Bootsplash could not be decoded. jpeg_decode returned %d.\n",
53 ret);
54 return;
55 }
56 printk(BIOS_INFO, "Bootsplash loaded\n");
57 }
58