/* SPDX-License-Identifier: GPL-2.0-only */ #include <cbfs.h> #include <vbe.h> #include <console/console.h> #include <endian.h> #include <bootsplash.h> #include "jpeg.h" void set_bootsplash(unsigned char *framebuffer, unsigned int x_resolution, unsigned int y_resolution, unsigned int bytes_per_line, unsigned int fb_resolution) { if ((x_resolution > INT_MAX) || (y_resolution) > INT_MAX) { printk(BIOS_ERR, "Display resolution way too large.\n"); return; } int xres = x_resolution, yres = y_resolution; printk(BIOS_INFO, "Setting up bootsplash in %dx%d@%d\n", x_resolution, y_resolution, fb_resolution); size_t filesize; unsigned char *jpeg = cbfs_map("bootsplash.jpg", &filesize); if (!jpeg) { printk(BIOS_ERR, "Could not find bootsplash.jpg\n"); return; } unsigned int image_width, image_height; if (jpeg_fetch_size(jpeg, filesize, &image_width, &image_height) != 0) { printk(BIOS_ERR, "Could not parse bootsplash.jpg\n"); return; } printk(BIOS_DEBUG, "Bootsplash image resolution: %dx%d\n", image_width, image_height); if (image_width > xres || image_height > yres) { printk(BIOS_NOTICE, "Bootsplash image can't fit framebuffer.\n"); cbfs_unmap(jpeg); return; } /* center image: */ framebuffer += (yres - image_height) / 2 * bytes_per_line + (xres - image_width) / 2 * (fb_resolution / 8); int ret = jpeg_decode(jpeg, filesize, framebuffer, image_width, image_height, bytes_per_line, fb_resolution); cbfs_unmap(jpeg); if (ret != 0) { printk(BIOS_ERR, "Bootsplash could not be decoded. jpeg_decode returned %d.\n", ret); return; } printk(BIOS_INFO, "Bootsplash loaded\n"); }