diff options
Diffstat (limited to 'src/bootsplash.c')
| -rw-r--r-- | src/bootsplash.c | 262 |
1 files changed, 262 insertions, 0 deletions
diff --git a/src/bootsplash.c b/src/bootsplash.c new file mode 100644 index 00000000..0b550adf --- /dev/null +++ b/src/bootsplash.c @@ -0,0 +1,262 @@ +// Option rom scanning code. +// +// Copyright (C) 2009-2010 coresystems GmbH +// +// This file may be distributed under the terms of the GNU LGPLv3 license. + +#include "bregs.h" // struct bregs +#include "farptr.h" // FLATPTR_TO_SEG +#include "config.h" // CONFIG_* +#include "util.h" // dprintf +#include "jpeg.h" // splash + +/**************************************************************** + * Definitions + ****************************************************************/ + +/**************************************************************** + * VESA structures + ****************************************************************/ + +struct vesa_info +{ + u8 vesa_signature[4]; + u16 vesa_version; + u32 oem_string_ptr; + u8 capabilities[4]; + u32 video_mode_ptr; + u16 total_memory; + u16 oem_software_rev; + u32 oem_vendor_name_ptr; + u32 oem_product_name_ptr; + u32 oem_product_rev_ptr; + u8 reserved[222]; + u8 oem_data[256]; +} PACKED; + +struct vesa_mode_info +{ + u16 mode_attributes; + u8 win_a_attributes; + u8 win_b_attributes; + u16 win_granularity; + u16 win_size; + u16 win_a_segment; + u16 win_b_segment; + u32 win_func_ptr; + u16 bytes_per_scanline; + u16 x_resolution; + u16 y_resolution; + u8 x_charsize; + u8 y_charsize; + u8 number_of_planes; + u8 bits_per_pixel; + u8 number_of_banks; + u8 memory_model; + u8 bank_size; + u8 number_of_image_pages; + u8 reserved_page; + u8 red_mask_size; + u8 red_mask_pos; + u8 green_mask_size; + u8 green_mask_pos; + u8 blue_mask_size; + u8 blue_mask_pos; + u8 reserved_mask_size; + u8 reserved_mask_pos; + u8 direct_color_mode_info; + u32 phys_base_ptr; + u32 offscreen_mem_offset; + u16 offscreen_mem_size; + u8 reserved[206]; +} PACKED; + +/**************************************************************** + * Helper functions + ****************************************************************/ + +/**************************************************************** + * VGA text / graphics console + ****************************************************************/ +static void enable_vga_text_console(void) +{ + dprintf(1, "Turning on vga text mode console\n"); + struct bregs br; + + /* Enable VGA text mode */ + memset(&br, 0, sizeof(br)); + br.flags = F_IF; + br.ax = 0x0003; + start_preempt(); + call16_int(0x10, &br); + finish_preempt(); + + if (CONFIG_BOOTSPLASH) { + /* Switch back to start of the framebuffer + * (disable "double buffering") + */ + memset(&br, 0, sizeof(br)); + br.flags = F_IF; + br.ax = 0x4f07; + br.bl = 0x02; + br.ecx = 0; + + start_preempt(); + call16_int(0x10, &br); + finish_preempt(); + } + + // Write to screen. + printf("Starting SeaBIOS (version %s)\n\n", VERSION); +} + +void enable_vga_console(void) +{ + /* Needs coreboot support for CBFS */ + if (!CONFIG_BOOTSPLASH || !CONFIG_COREBOOT) { + enable_vga_text_console(); + return; + } + + struct bregs br; + struct vesa_info *vesa_info; + struct vesa_mode_info *mode_info; + struct jpeg_decdata *decdata; + + vesa_info = malloc_tmphigh(sizeof(*vesa_info)); + mode_info = malloc_tmphigh(sizeof(*mode_info)); + decdata = malloc_tmphigh(sizeof(*decdata)); + + /* Check whether we have a VESA 2.0 compliant BIOS */ + memset(vesa_info, 0, sizeof(struct vesa_info)); + memcpy(vesa_info, "VBE2", 4); + + memset(&br, 0, sizeof(br)); + br.flags = F_IF; + br.ax = 0x4f00; + br.di = FLATPTR_TO_OFFSET(vesa_info); + br.es = FLATPTR_TO_SEG(vesa_info); + start_preempt(); + call16_int(0x10, &br); + finish_preempt(); + + if(strcmp("VESA", (char *)vesa_info) != 0) { + dprintf(1,"No VBE2 found.\n"); + goto cleanup; + } + + /* Print some debugging information about our card. */ + char *vendor, *product; + vendor = (char *)(((vesa_info->oem_vendor_name_ptr & 0xffff0000) >> 12) | + (vesa_info->oem_vendor_name_ptr & 0xffff)); + + product = (char *)(((vesa_info->oem_product_name_ptr & 0xffff0000) >> 12) | + (vesa_info->oem_product_name_ptr & 0xffff)); + + dprintf(8, "VESA %d.%d\nVENDOR: %s\nPRODUCT: %s\n", + vesa_info->vesa_version>>8,vesa_info->vesa_version&0xff, + vendor, product); + + /* Get information about our graphics mode, like the + * framebuffer start address + */ + memset(&br, 0, sizeof(br)); + br.flags = F_IF; + br.ax = 0x4f01; + br.cx = (1 << 14) | CONFIG_BOOTSPLASH_VESA_MODE; + br.di = FLATPTR_TO_OFFSET(mode_info); + br.es = FLATPTR_TO_SEG(mode_info); + start_preempt(); + call16_int(0x10, &br); + finish_preempt(); + if (br.ax != 0x4f) { + dprintf(1, "get_mode failed.\n"); + enable_vga_text_console(); + goto cleanup; + } + unsigned char *framebuffer = (unsigned char *) (mode_info->phys_base_ptr); + + /* Switch to graphics mode */ + memset(&br, 0, sizeof(br)); + br.flags = F_IF; + br.ax = 0x4f02; + br.bx = (1 << 14) | CONFIG_BOOTSPLASH_VESA_MODE; + start_preempt(); + call16_int(0x10, &br); + finish_preempt(); + if (br.ax != 0x4f) { + dprintf(1, "set_mode failed.\n"); + enable_vga_text_console(); + goto cleanup; + } + + /* Switching Intel IGD to 1MB video memory will break this. Who cares. */ + int imagesize = CONFIG_BOOTSPLASH_X * CONFIG_BOOTSPLASH_Y * + (CONFIG_BOOTSPLASH_DEPTH / 8); + + /* We use "double buffering" to make things look nicer */ + framebuffer += imagesize; + + dprintf(9, "framebuffer: %x\n", (u32)framebuffer); + dprintf(9, "bytes per scanline: %d\n", mode_info->bytes_per_scanline); + dprintf(9, "bits per pixel: %d\n", mode_info->bits_per_pixel); + + /* Look for bootsplash.jpg in CBFS and decompress it... */ + int ret = 0; + unsigned char *jpeg = NULL; + + struct cbfs_file *file = cbfs_finddatafile("bootsplash.jpg"); + int filesize = 0; + + if (file) { + filesize = cbfs_datasize(file); + jpeg = malloc_tmphigh(filesize); + } else { + dprintf(1, "Could not find boot splash screen \"bootsplash.jpg\"\n"); + } + if(jpeg) { + dprintf(9, "Copying boot splash screen...\n"); + cbfs_copyfile(file, jpeg, filesize); + dprintf(9, "Decompressing boot splash screen...\n"); + start_preempt(); + ret = jpeg_decode(jpeg, framebuffer, CONFIG_BOOTSPLASH_X, + CONFIG_BOOTSPLASH_Y, CONFIG_BOOTSPLASH_DEPTH, decdata); + finish_preempt(); + if (ret) + dprintf(1, "Failed with return code %x...\n", ret); + } else { + ret = -1; + } + free(jpeg); + if (ret) { + enable_vga_text_console(); + goto cleanup; + } + + /* Show the picture */ + memset(&br, 0, sizeof(br)); + br.flags = F_IF; + br.ax = 0x4f07; + br.bl = 0x02; + br.ecx = imagesize; + start_preempt(); + call16_int(0x10, &br); + finish_preempt(); + if (br.ax != 0x4f) { + dprintf(1, "display_start failed.\n"); + enable_vga_text_console(); + } + +cleanup: + free (vesa_info); + free (mode_info); + free (decdata); +} + +void +disable_bootsplash(void) +{ + if (! CONFIG_BOOTSPLASH) + return; + enable_vga_text_console(); +} |