| 1 | /* -*- asm -*- ----------------------------------------------------------- |
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| 2 | * |
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| 3 | * Copyright 2009-2014 Intel Corporation; author: H. Peter Anvin |
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| 4 | * |
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| 5 | * Permission is hereby granted, free of charge, to any person |
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| 6 | * obtaining a copy of this software and associated documentation |
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| 7 | * files (the "Software"), to deal in the Software without |
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| 8 | * restriction, including without limitation the rights to use, |
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| 9 | * copy, modify, merge, publish, distribute, sublicense, and/or |
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| 10 | * sell copies of the Software, and to permit persons to whom |
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| 11 | * the Software is furnished to do so, subject to the following |
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| 12 | * conditions: |
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| 13 | * |
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| 14 | * The above copyright notice and this permission notice shall |
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| 15 | * be included in all copies or substantial portions of the Software. |
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| 16 | * |
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| 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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| 18 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES |
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| 19 | * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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| 20 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT |
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| 21 | * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
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| 22 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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| 23 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
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| 24 | * OTHER DEALINGS IN THE SOFTWARE. |
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| 25 | * |
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| 26 | * ----------------------------------------------------------------------- */ |
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| 27 | |
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| 28 | /* |
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| 29 | * adjust.h |
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| 30 | * |
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| 31 | * Macros to adjust the drive number |
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| 32 | */ |
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| 33 | |
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| 34 | #ifndef ADJUST_H |
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| 35 | #define ADJUST_H |
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| 36 | |
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| 37 | #ifdef CTRL_80 |
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| 38 | .macro ADJUST_DRIVE |
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| 39 | pusha |
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| 40 | movb $0x02, %ah |
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| 41 | int $0x16 |
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| 42 | testb $0x04, %al |
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| 43 | popa |
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| 44 | jz 1f |
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| 45 | movb $0x80, %dl |
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| 46 | 1: |
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| 47 | .endm |
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| 48 | #elif defined(FORCE_80) |
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| 49 | .macro ADJUST_DRIVE |
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| 50 | movb $0x80, %dl |
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| 51 | .endm |
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| 52 | #else |
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| 53 | .macro ADJUST_DRIVE |
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| 54 | .endm |
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| 55 | #endif |
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| 56 | |
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| 57 | #endif /* ADJUST_H */ |
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