59 lines
1.8 KiB
PHP
Executable File
59 lines
1.8 KiB
PHP
Executable File
; Copyright (C) 2020 Bradley Claus
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;
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; This program is free software: you can redistribute it and/or modify
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; it under the terms of the GNU General Public License as published by
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; the Free Software Foundation, either version 3 of the License, or
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; (at your option) any later version.
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;
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; This program is distributed in the hope that it will be useful,
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; but WITHOUT ANY WARRANTY; without even the implied warranty of
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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; GNU General Public License for more details.
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;
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; You should have received a copy of the GNU General Public License
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; along with this program. If not, see <https://www.gnu.org/licenses/>.
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; Partition table entry format
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; Off. Size. Description
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;0x00 1 Drive attributes (bit 7 set = active or bootable)
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;0x01 3 CHS Address of partition start
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;0x04 1 Partition type
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;0x05 3 CHS address of last partition sector
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;0x08 4 LBA of partition start
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;0x0C 4 Number of sectors in partition
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struc PartEntry_t
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.attributes resb 1
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.chs_start resb 3
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.part_type resb 1
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.chs_end resb 3
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.lba_start resb 4
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.lba_length resb 4
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endstruc
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struc PartTable_t
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.partition1 resb 16
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.partition2 resb 16
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.partition3 resb 16
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.partition4 resb 16
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endstruc
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;Offset Size Description
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; 0 1 size of packet (16 bytes)
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; 1 1 always 0
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; 2 2 number of sectors to transfer (max 127 on some BIOSes)
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; 4 4 transfer buffer (0xFFFF:0xFFFF)
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; 8 4 lower 32-bits of starting 48-bit LBA
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; 12 4 upper 32-bits of starting 48-bit LBA
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; needs to be aligned to a uint32_t
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struc LBAPkt_t
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.size resb 1
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.res0 resb 1
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.xfer_size resw 1
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.offset resw 1
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.segment resw 1
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.lower_lba resd 1
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.upper_lba resd 1
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endstruc |