Esempio n. 1
0
void
enable_bootsplash(void)
{
    if (!CONFIG_BOOTSPLASH)
        return;
    dprintf(3, "Checking for bootsplash\n");
    u32 file = romfile_find("bootsplash.jpg");
    if (!file)
        return;
    int filesize = romfile_size(file);

    u8 *picture = NULL;
    u8 *filedata = malloc_tmphigh(filesize);
    struct vesa_info *vesa_info = malloc_tmplow(sizeof(*vesa_info));
    struct vesa_mode_info *mode_info = malloc_tmplow(sizeof(*mode_info));
    struct jpeg_decdata *jpeg = jpeg_alloc();
    if (!filedata || !jpeg || !vesa_info || !mode_info) {
        warn_noalloc();
        goto done;
    }

    /* Check whether we have a VESA 2.0 compliant BIOS */
    memset(vesa_info, 0, sizeof(struct vesa_info));
    vesa_info->vesa_signature = VBE2_SIGNATURE;
    struct bregs br;
    memset(&br, 0, sizeof(br));
    br.ax = 0x4f00;
    br.di = FLATPTR_TO_OFFSET(vesa_info);
    br.es = FLATPTR_TO_SEG(vesa_info);
    call16_int10(&br);
    if (vesa_info->vesa_signature != VESA_SIGNATURE) {
        dprintf(1,"No VBE2 found.\n");
        goto done;
    }

    /* Print some debugging information about our card. */
    char *vendor = SEGOFF_TO_FLATPTR(vesa_info->oem_vendor_name_ptr);
    char *product = SEGOFF_TO_FLATPTR(vesa_info->oem_product_name_ptr);
    dprintf(3, "VESA %d.%d\nVENDOR: %s\nPRODUCT: %s\n",
            vesa_info->vesa_version>>8, vesa_info->vesa_version&0xff,
            vendor, product);

    // Parse jpeg and get image size.
    dprintf(5, "Copying bootsplash.jpg\n");
    romfile_copy(file, filedata, filesize);
    dprintf(5, "Decoding bootsplash.jpg\n");
    int ret = jpeg_decode(jpeg, filedata);
    if (ret) {
        dprintf(1, "jpeg_decode failed with return code %d...\n", ret);
        goto done;
    }
    int width, height;
    jpeg_get_size(jpeg, &width, &height);

    // Try to find a graphics mode with the corresponding dimensions.
    int videomode = find_videomode(vesa_info, mode_info, width, height);
    if (videomode < 0)
        goto done;
    void *framebuffer = mode_info->phys_base_ptr;
    int depth = mode_info->bits_per_pixel;
    dprintf(3, "mode: %04x\n", videomode);
    dprintf(3, "framebuffer: %p\n", framebuffer);
    dprintf(3, "bytes per scanline: %d\n", mode_info->bytes_per_scanline);
    dprintf(3, "bits per pixel: %d\n", depth);

    // Allocate space for image and decompress it.
    int imagesize = width * height * (depth / 8);
    picture = malloc_tmphigh(imagesize);
    if (!picture) {
        warn_noalloc();
        goto done;
    }
    dprintf(5, "Decompressing bootsplash.jpg\n");
    ret = jpeg_show(jpeg, picture, width, height, depth);
    if (ret) {
        dprintf(1, "jpeg_show failed with return code %d...\n", ret);
        goto done;
    }

    /* Switch to graphics mode */
    dprintf(5, "Switching to graphics mode\n");
    memset(&br, 0, sizeof(br));
    br.ax = 0x4f02;
    br.bx = (1 << 14) | videomode;
    call16_int10(&br);
    if (br.ax != 0x4f) {
        dprintf(1, "set_mode failed.\n");
        goto done;
    }

    /* Show the picture */
    dprintf(5, "Showing bootsplash.jpg\n");
    iomemcpy(framebuffer, picture, imagesize);
    dprintf(5, "Bootsplash copy complete\n");
    BootsplashActive = 1;

done:
    free(filedata);
    free(picture);
    free(vesa_info);
    free(mode_info);
    free(jpeg);
    return;
}
Esempio n. 2
0
void
enable_bootsplash(void)
{
    if (!CONFIG_BOOTSPLASH)
        return;
    /* splash picture can be bmp or jpeg file */
    dprintf(3, "Checking for bootsplash\n");
    u8 type = 0; /* 0 means jpg, 1 means bmp, default is 0=jpg */
    int filesize;
    u8 *filedata = romfile_loadfile("bootsplash.jpg", &filesize);
    if (!filedata) {
        filedata = romfile_loadfile("bootsplash.bmp", &filesize);
        if (!filedata)
            return;
        type = 1;
    }
    dprintf(3, "start showing bootsplash\n");

    u8 *picture = NULL; /* data buff used to be flushed to the video buf */
    struct jpeg_decdata *jpeg = NULL;
    struct bmp_decdata *bmp = NULL;
    struct vbe_info *vesa_info = malloc_tmplow(sizeof(*vesa_info));
    struct vbe_mode_info *mode_info = malloc_tmplow(sizeof(*mode_info));
    if (!vesa_info || !mode_info) {
        warn_noalloc();
        goto done;
    }

    /* Check whether we have a VESA 2.0 compliant BIOS */
    memset(vesa_info, 0, sizeof(struct vbe_info));
    vesa_info->signature = VBE2_SIGNATURE;
    struct bregs br;
    memset(&br, 0, sizeof(br));
    br.ax = 0x4f00;
    br.di = FLATPTR_TO_OFFSET(vesa_info);
    br.es = FLATPTR_TO_SEG(vesa_info);
    call16_int10(&br);
    if (vesa_info->signature != VESA_SIGNATURE) {
        dprintf(1,"No VBE2 found.\n");
        goto done;
    }

    /* Print some debugging information about our card. */
    char *vendor = SEGOFF_TO_FLATPTR(vesa_info->oem_vendor_string);
    char *product = SEGOFF_TO_FLATPTR(vesa_info->oem_product_string);
    dprintf(3, "VESA %d.%d\nVENDOR: %s\nPRODUCT: %s\n",
            vesa_info->version>>8, vesa_info->version&0xff,
            vendor, product);

    int ret, width, height;
    int bpp_require = 0;
    if (type == 0) {
        jpeg = jpeg_alloc();
        if (!jpeg) {
            warn_noalloc();
            goto done;
        }
        /* Parse jpeg and get image size. */
        dprintf(5, "Decoding bootsplash.jpg\n");
        ret = jpeg_decode(jpeg, filedata);
        if (ret) {
            dprintf(1, "jpeg_decode failed with return code %d...\n", ret);
            goto done;
        }
        jpeg_get_size(jpeg, &width, &height);
    } else {
        bmp = bmp_alloc();
        if (!bmp) {
            warn_noalloc();
            goto done;
        }
        /* Parse bmp and get image size. */
        dprintf(5, "Decoding bootsplash.bmp\n");
        ret = bmp_decode(bmp, filedata, filesize);
        if (ret) {
            dprintf(1, "bmp_decode failed with return code %d...\n", ret);
            goto done;
        }
        bmp_get_size(bmp, &width, &height);
        bpp_require = 24;
    }
    /* jpeg would use 16 or 24 bpp video mode, BMP use 24bpp mode only */

    // Try to find a graphics mode with the corresponding dimensions.
    int videomode = find_videomode(vesa_info, mode_info, width, height,
                                       bpp_require);
    if (videomode < 0) {
        dprintf(1, "failed to find a videomode with %dx%d %dbpp (0=any).\n",
                    width, height, bpp_require);
        goto done;
    }
    void *framebuffer = (void *)mode_info->phys_base;
    int depth = mode_info->bits_per_pixel;
    dprintf(3, "mode: %04x\n", videomode);
    dprintf(3, "framebuffer: %p\n", framebuffer);
    dprintf(3, "bytes per scanline: %d\n", mode_info->bytes_per_scanline);
    dprintf(3, "bits per pixel: %d\n", depth);

    // Allocate space for image and decompress it.
    int imagesize = height * mode_info->bytes_per_scanline;
    picture = malloc_tmphigh(imagesize);
    if (!picture) {
        warn_noalloc();
        goto done;
    }

    if (type == 0) {
        dprintf(5, "Decompressing bootsplash.jpg\n");
        ret = jpeg_show(jpeg, picture, width, height, depth,
                            mode_info->bytes_per_scanline);
        if (ret) {
            dprintf(1, "jpeg_show failed with return code %d...\n", ret);
            goto done;
        }
    } else {
        dprintf(5, "Decompressing bootsplash.bmp\n");
        ret = bmp_show(bmp, picture, width, height, depth,
                           mode_info->bytes_per_scanline);
        if (ret) {
            dprintf(1, "bmp_show failed with return code %d...\n", ret);
            goto done;
        }
    }

    /* Switch to graphics mode */
    dprintf(5, "Switching to graphics mode\n");
    memset(&br, 0, sizeof(br));
    br.ax = 0x4f02;
    br.bx = videomode | VBE_MODE_LINEAR_FRAME_BUFFER;
    call16_int10(&br);
    if (br.ax != 0x4f) {
        dprintf(1, "set_mode failed.\n");
        goto done;
    }

    /* Show the picture */
    dprintf(5, "Showing bootsplash picture\n");
    iomemcpy(framebuffer, picture, imagesize);
    dprintf(5, "Bootsplash copy complete\n");
    BootsplashActive = 1;

done:
    free(filedata);
    free(picture);
    free(vesa_info);
    free(mode_info);
    free(jpeg);
    free(bmp);
    return;
}