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author | H. Peter Anvin <hpa@zytor.com> | 2009-11-13 20:16:43 -0800 |
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committer | H. Peter Anvin <hpa@zytor.com> | 2009-11-13 20:22:44 -0800 |
commit | 7b04ddff50bc4903d50ed570daf01422ebfaa6ed (patch) | |
tree | 94dc55c891e861e9fcae8b2ca417d7cefe3fa999 /com32/mboot/vesa.h | |
parent | 56e6eae7f4af352aaf33840fd652474098486ea6 (diff) | |
download | syslinux-7b04ddff50bc4903d50ed570daf01422ebfaa6ed.tar.gz |
mboot.c32: add VESA mode setting supportsyslinux-3.84-pre2
Add VESA mode setting support per the Multiboot specification.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'com32/mboot/vesa.h')
-rw-r--r-- | com32/mboot/vesa.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/com32/mboot/vesa.h b/com32/mboot/vesa.h new file mode 100644 index 00000000..ecc084aa --- /dev/null +++ b/com32/mboot/vesa.h @@ -0,0 +1,100 @@ +/* ----------------------------------------------------------------------- * + * + * Copyright 1999-2008 H. Peter Anvin - All Rights Reserved + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, + * copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom + * the Software is furnished to do so, subject to the following + * conditions: + * + * The above copyright notice and this permission notice shall + * be included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES + * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT + * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * ----------------------------------------------------------------------- */ + +#ifndef LIB_SYS_VESA_H +#define LIB_SYS_VESA_H + +#include <inttypes.h> +#include <com32.h> + +/* VESA General Information table */ +struct vesa_general_info { + uint32_t signature; /* Magic number = "VESA" */ + uint16_t version; + far_ptr_t vendor_string; + uint8_t capabilities[4]; + far_ptr_t video_mode_ptr; + uint16_t total_memory; + + uint16_t oem_software_rev; + far_ptr_t oem_vendor_name_ptr; + far_ptr_t oem_product_name_ptr; + far_ptr_t oem_product_rev_ptr; + + uint8_t reserved[222]; + uint8_t oem_data[256]; +} __attribute__ ((packed)); + +#define VESA_MAGIC ('V' + ('E' << 8) + ('S' << 16) + ('A' << 24)) +#define VBE2_MAGIC ('V' + ('B' << 8) + ('E' << 16) + ('2' << 24)) + +struct vesa_mode_info { + uint16_t mode_attr; + uint8_t win_attr[2]; + uint16_t win_grain; + uint16_t win_size; + uint16_t win_seg[2]; + far_ptr_t win_scheme; + uint16_t logical_scan; + + uint16_t h_res; + uint16_t v_res; + uint8_t char_width; + uint8_t char_height; + uint8_t memory_planes; + uint8_t bpp; + uint8_t banks; + uint8_t memory_layout; + uint8_t bank_size; + uint8_t image_pages; + uint8_t page_function; + + uint8_t rmask; + uint8_t rpos; + uint8_t gmask; + uint8_t gpos; + uint8_t bmask; + uint8_t bpos; + uint8_t resv_mask; + uint8_t resv_pos; + uint8_t dcm_info; + + uint8_t *lfb_ptr; /* Linear frame buffer address */ + uint8_t *offscreen_ptr; /* Offscreen memory address */ + uint16_t offscreen_size; + + uint8_t reserved[206]; +} __attribute__ ((packed)); + +struct vesa_info { + struct vesa_general_info gi; + struct vesa_mode_info mi; +}; + +extern struct vesa_info vesa_info; + +#endif /* LIB_SYS_VESA_H */ |