boot/efi/splash.c

2f8d336478536af789d654599f9523d02e0ca693Kay Sievers/*
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers * This program is free software; you can redistribute it and/or modify it
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers * under the terms of the GNU Lesser General Public License as published by
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers * the Free Software Foundation; either version 2.1 of the License, or
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers * (at your option) any later version.
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers *
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers * This program is distributed in the hope that it will be useful, but
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers * WITHOUT ANY WARRANTY; without even the implied warranty of
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers * Lesser General Public License for more details.
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers *
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers * Copyright (C) 2012-2013 Kay Sievers <kay@vrfy.org>
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers * Copyright (C) 2012 Harald Hoyer <harald@redhat.com>
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers */
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers#include <efi.h>
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers#include <efilib.h>
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2bdbf32183fc6816cf34f4850e9fc5f070a34303Marcel Holtmann#include "graphics.h"
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers#include "splash.h"
cf0fbc49e67b55f8d346fc94de28c90113505297Thomas Hindoe Paaboel Andersen#include "util.h"
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sieversstruct bmp_file {
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        CHAR8 signature[2];
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        UINT32 size;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        UINT16 reserved[2];
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        UINT32 offset;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers} __attribute__((packed));
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers/* we require at least BITMAPINFOHEADER, later versions are
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers   accepted, but their features ignored */
2f8d336478536af789d654599f9523d02e0ca693Kay Sieversstruct bmp_dib {
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        UINT32 size;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        UINT32 x;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        UINT32 y;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        UINT16 planes;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        UINT16 depth;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        UINT32 compression;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        UINT32 image_size;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        INT32 x_pixel_meter;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        INT32 y_pixel_meter;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        UINT32 colors_used;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        UINT32 colors_important;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers} __attribute__((packed));
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sieversstruct bmp_map {
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        UINT8 blue;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        UINT8 green;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        UINT8 red;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        UINT8 reserved;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers} __attribute__((packed));
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay SieversEFI_STATUS bmp_parse_header(UINT8 *bmp, UINTN size, struct bmp_dib **ret_dib,
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                            struct bmp_map **ret_map, UINT8 **pixmap) {
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        struct bmp_file *file;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        struct bmp_dib *dib;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        struct bmp_map *map;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        UINTN row_size;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        if (size < sizeof(struct bmp_file) + sizeof(struct bmp_dib))
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                return EFI_INVALID_PARAMETER;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        /* check file header */
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        file = (struct bmp_file *)bmp;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        if (file->signature[0] != 'B' || file->signature[1] != 'M')
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                return EFI_INVALID_PARAMETER;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        if (file->size != size)
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                return EFI_INVALID_PARAMETER;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        if (file->size < file->offset)
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                return EFI_INVALID_PARAMETER;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        /*  check device-independent bitmap */
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        dib = (struct bmp_dib *)(bmp + sizeof(struct bmp_file));
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        if (dib->size < sizeof(struct bmp_dib))
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                return EFI_UNSUPPORTED;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        switch (dib->depth) {
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        case 1:
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        case 4:
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        case 8:
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        case 24:
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                if (dib->compression != 0)
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                        return EFI_UNSUPPORTED;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                break;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        case 16:
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        case 32:
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                if (dib->compression != 0 && dib->compression != 3)
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                        return EFI_UNSUPPORTED;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                break;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        default:
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                return EFI_UNSUPPORTED;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        }
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
7c5925a448551129ec2e11157c847703def79608Zbigniew Jędrzejewski-Szmek        row_size = ((UINTN) dib->depth * dib->x + 31) / 32 * 4;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        if (file->size - file->offset <  dib->y * row_size)
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                return EFI_INVALID_PARAMETER;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        if (row_size * dib->y > 64 * 1024 * 1024)
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                return EFI_INVALID_PARAMETER;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        /* check color table */
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        map = (struct bmp_map *)(bmp + sizeof(struct bmp_file) + dib->size);
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        if (file->offset < sizeof(struct bmp_file) + dib->size)
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                return EFI_INVALID_PARAMETER;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        if (file->offset > sizeof(struct bmp_file) + dib->size) {
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                UINT32 map_count;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                UINTN map_size;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                if (dib->colors_used)
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                        map_count = dib->colors_used;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                else {
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                        switch (dib->depth) {
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                        case 1:
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                        case 4:
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                        case 8:
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                map_count = 1 << dib->depth;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                break;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                        default:
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                map_count = 0;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                break;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                        }
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                }
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                map_size = file->offset - (sizeof(struct bmp_file) + dib->size);
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                if (map_size != sizeof(struct bmp_map) * map_count)
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                        return EFI_INVALID_PARAMETER;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        }
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        *ret_map = map;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        *ret_dib = dib;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        *pixmap = bmp + file->offset;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        return EFI_SUCCESS;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers}
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sieversstatic VOID pixel_blend(UINT32 *dst, const UINT32 source) {
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        UINT32 alpha, src, src_rb, src_g, dst_rb, dst_g, rb, g;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        alpha = (source & 0xff);
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        /* convert src from RGBA to XRGB */
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        src = source >> 8;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        /* decompose into RB and G components */
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        src_rb = (src & 0xff00ff);
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        src_g  = (src & 0x00ff00);
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        dst_rb = (*dst & 0xff00ff);
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        dst_g  = (*dst & 0x00ff00);
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        /* blend */
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        rb = ((((src_rb - dst_rb) * alpha + 0x800080) >> 8) + dst_rb) & 0xff00ff;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        g  = ((((src_g  -  dst_g) * alpha + 0x008000) >> 8) +  dst_g) & 0x00ff00;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        *dst = (rb | g);
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers}
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay SieversEFI_STATUS bmp_to_blt(EFI_GRAPHICS_OUTPUT_BLT_PIXEL *buf,
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                      struct bmp_dib *dib, struct bmp_map *map,
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                      UINT8 *pixmap) {
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        UINT8 *in;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        UINTN y;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        /* transform and copy pixels */
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        in = pixmap;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        for (y = 0; y < dib->y; y++) {
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                EFI_GRAPHICS_OUTPUT_BLT_PIXEL *out;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                UINTN row_size;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                UINTN x;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                out = &buf[(dib->y - y - 1) * dib->x];
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                for (x = 0; x < dib->x; x++, in++, out++) {
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                        switch (dib->depth) {
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                        case 1: {
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                UINTN i;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                for (i = 0; i < 8 && x < dib->x; i++) {
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                        out->Red = map[((*in) >> (7 - i)) & 1].red;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                        out->Green = map[((*in) >> (7 - i)) & 1].green;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                        out->Blue = map[((*in) >> (7 - i)) & 1].blue;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                        out++;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                        x++;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                }
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                out--;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                x--;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                break;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                        }
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                        case 4: {
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                UINTN i;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                i = (*in) >> 4;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                out->Red = map[i].red;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                out->Green = map[i].green;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                out->Blue = map[i].blue;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                if (x < (dib->x - 1)) {
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                        out++;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                        x++;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                        i = (*in) & 0x0f;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                        out->Red = map[i].red;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                        out->Green = map[i].green;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                        out->Blue = map[i].blue;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                }
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                break;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                        }
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                        case 8:
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                out->Red = map[*in].red;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                out->Green = map[*in].green;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                out->Blue = map[*in].blue;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                break;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                        case 16: {
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                UINT16 i = *(UINT16 *) in;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                out->Red = (i & 0x7c00) >> 7;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                out->Green = (i & 0x3e0) >> 2;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                out->Blue = (i & 0x1f) << 3;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                in += 1;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                break;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                        }
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                        case 24:
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                out->Red = in[2];
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                out->Green = in[1];
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                out->Blue = in[0];
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                in += 2;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                break;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                        case 32: {
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                UINT32 i = *(UINT32 *) in;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                pixel_blend((UINT32 *)out, i);
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                in += 3;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                break;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                        }
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                        }
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                }
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                /* add row padding; new lines always start at 32 bit boundary */
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                row_size = in - pixmap;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                in += ((row_size + 3) & ~3) - row_size;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        }
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        return EFI_SUCCESS;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers}
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay SieversEFI_STATUS graphics_splash(UINT8 *content, UINTN len, const EFI_GRAPHICS_OUTPUT_BLT_PIXEL *background) {
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        EFI_GRAPHICS_OUTPUT_BLT_PIXEL pixel = {};
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        EFI_GUID GraphicsOutputProtocolGuid = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        EFI_GRAPHICS_OUTPUT_PROTOCOL *GraphicsOutput = NULL;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        struct bmp_dib *dib;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        struct bmp_map *map;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        UINT8 *pixmap;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        UINT64 blt_size;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        VOID *blt = NULL;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        UINTN x_pos = 0;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        UINTN y_pos = 0;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        EFI_STATUS err;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        if (!background) {
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                if (StriCmp(L"Apple", ST->FirmwareVendor) == 0) {
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                        pixel.Red = 0xc0;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                        pixel.Green = 0xc0;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                        pixel.Blue = 0xc0;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                }
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                background = &pixel;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        }
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        err = LibLocateProtocol(&GraphicsOutputProtocolGuid, (VOID **)&GraphicsOutput);
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        if (EFI_ERROR(err))
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                return err;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        err = bmp_parse_header(content, len, &dib, &map, &pixmap);
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        if (EFI_ERROR(err))
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                goto err;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        if(dib->x < GraphicsOutput->Mode->Info->HorizontalResolution)
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                x_pos = (GraphicsOutput->Mode->Info->HorizontalResolution - dib->x) / 2;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        if(dib->y < GraphicsOutput->Mode->Info->VerticalResolution)
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                y_pos = (GraphicsOutput->Mode->Info->VerticalResolution - dib->y) / 2;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        uefi_call_wrapper(GraphicsOutput->Blt, 10, GraphicsOutput,
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                          (EFI_GRAPHICS_OUTPUT_BLT_PIXEL *)background,
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                          EfiBltVideoFill, 0, 0, 0, 0,
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                          GraphicsOutput->Mode->Info->HorizontalResolution,
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                          GraphicsOutput->Mode->Info->VerticalResolution, 0);
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        /* EFI buffer */
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        blt_size = dib->x * dib->y * sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL);
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        blt = AllocatePool(blt_size);
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        if (!blt)
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                return EFI_OUT_OF_RESOURCES;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        err = uefi_call_wrapper(GraphicsOutput->Blt, 10, GraphicsOutput,
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                blt, EfiBltVideoToBltBuffer, x_pos, y_pos, 0, 0,
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                dib->x, dib->y, 0);
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        if (EFI_ERROR(err))
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                goto err;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        err = bmp_to_blt(blt, dib, map, pixmap);
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        if (EFI_ERROR(err))
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                goto err;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        err = graphics_mode(TRUE);
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        if (EFI_ERROR(err))
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                goto err;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        err = uefi_call_wrapper(GraphicsOutput->Blt, 10, GraphicsOutput,
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                blt, EfiBltBufferToVideo, 0, 0, x_pos, y_pos,
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers                                dib->x, dib->y, 0);
2f8d336478536af789d654599f9523d02e0ca693Kay Sieverserr:
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        FreePool(blt);
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers        return err;
2f8d336478536af789d654599f9523d02e0ca693Kay Sievers}