diff options
Diffstat (limited to 'qemu/roms/seabios/src/bootsplash.c')
| -rw-r--r-- | qemu/roms/seabios/src/bootsplash.c | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/qemu/roms/seabios/src/bootsplash.c b/qemu/roms/seabios/src/bootsplash.c new file mode 100644 index 000000000..c572685de --- /dev/null +++ b/qemu/roms/seabios/src/bootsplash.c @@ -0,0 +1,254 @@ +// Initialize the VGA console and possibly show a boot splash image. +// +// Copyright (C) 2009-2010 coresystems GmbH +// Copyright (C) 2010 Kevin O'Connor <kevin@koconnor.net> +// +// This file may be distributed under the terms of the GNU LGPLv3 license. + +#include "bregs.h" // struct bregs +#include "config.h" // CONFIG_* +#include "farptr.h" // FLATPTR_TO_SEG +#include "malloc.h" // free +#include "output.h" // dprintf +#include "romfile.h" // romfile_loadfile +#include "stacks.h" // call16_int +#include "std/vbe.h" // struct vbe_info +#include "string.h" // memset +#include "util.h" // enable_bootsplash + + +/**************************************************************** + * Helper functions + ****************************************************************/ + +// Call int10 vga handler. +static void +call16_int10(struct bregs *br) +{ + br->flags = F_IF; + start_preempt(); + call16_int(0x10, br); + finish_preempt(); +} + + +/**************************************************************** + * VGA text / graphics console + ****************************************************************/ + +void +enable_vga_console(void) +{ + dprintf(1, "Turning on vga text mode console\n"); + struct bregs br; + + /* Enable VGA text mode */ + memset(&br, 0, sizeof(br)); + br.ax = 0x0003; + call16_int10(&br); + + // Write to screen. + printf("SeaBIOS (version %s)\n", VERSION); + display_uuid(); +} + +static int +find_videomode(struct vbe_info *vesa_info, struct vbe_mode_info *mode_info + , int width, int height, int bpp_req) +{ + dprintf(3, "Finding vesa mode with dimensions %d/%d\n", width, height); + u16 *videomodes = SEGOFF_TO_FLATPTR(vesa_info->video_mode); + for (;; videomodes++) { + u16 videomode = *videomodes; + if (videomode == 0xffff) { + dprintf(1, "Unable to find vesa video mode dimensions %d/%d\n" + , width, height); + return -1; + } + struct bregs br; + memset(&br, 0, sizeof(br)); + br.ax = 0x4f01; + br.cx = videomode; + br.di = FLATPTR_TO_OFFSET(mode_info); + br.es = FLATPTR_TO_SEG(mode_info); + call16_int10(&br); + if (br.ax != 0x4f) { + dprintf(1, "get_mode failed.\n"); + continue; + } + if (mode_info->xres != width + || mode_info->yres != height) + continue; + u8 depth = mode_info->bits_per_pixel; + if (bpp_req == 0) { + if (depth != 16 && depth != 24 && depth != 32) + continue; + } else { + if (depth != bpp_req) + continue; + } + return videomode; + } +} + +static int BootsplashActive; + +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; +} + +void +disable_bootsplash(void) +{ + if (!CONFIG_BOOTSPLASH || !BootsplashActive) + return; + BootsplashActive = 0; + enable_vga_console(); +} |