| Bin Meng | 88b08fb | 2016-05-07 07:46:29 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 Advanced Micro Devices, Inc. |
| 3 | * Copyright (C) 2016 Bin Meng <bmeng.cn@gmail.com> |
| 4 | * |
| 5 | * Modified from coreboot src/arch/x86/acpi/globutil.asl |
| 6 | * |
| 7 | * SPDX-License-Identifier: GPL-2.0+ |
| 8 | */ |
| 9 | |
| 10 | Method(MIN, 2) |
| 11 | { |
| 12 | If (LLess(Arg0, Arg1)) { |
| 13 | Return (Arg0) |
| 14 | } Else { |
| 15 | Return (Arg1) |
| 16 | } |
| 17 | } |
| 18 | |
| 19 | Method(SLEN, 1) |
| 20 | { |
| 21 | Store(Arg0, Local0) |
| 22 | Return (Sizeof(Local0)) |
| 23 | } |
| 24 | |
| 25 | Method(S2BF, 1, Serialized) |
| 26 | { |
| 27 | Add(SLEN(Arg0), One, Local0) |
| 28 | Name(BUFF, Buffer(Local0) {}) |
| 29 | Store(Arg0, BUFF) |
| 30 | Return (BUFF) |
| 31 | } |
| 32 | |
| 33 | /* |
| 34 | * SCMP - Strong string compare |
| 35 | * |
| 36 | * Checks both length and content |
| 37 | */ |
| 38 | Method(SCMP, 2) |
| 39 | { |
| 40 | Store(S2BF(Arg0), Local0) |
| 41 | Store(S2BF(Arg1), Local1) |
| 42 | Store(Zero, Local4) |
| 43 | Store(SLEN(Arg0), Local5) |
| 44 | Store(SLEN(Arg1), Local6) |
| 45 | Store(MIN(Local5, Local6), Local7) |
| 46 | |
| 47 | While (LLess(Local4, Local7)) { |
| 48 | Store(Derefof(Index(Local0, Local4)), Local2) |
| 49 | Store(Derefof(Index(Local1, Local4)), Local3) |
| 50 | If (LGreater(Local2, Local3)) { |
| 51 | Return (One) |
| 52 | } Else { |
| 53 | If (LLess(Local2, Local3)) { |
| 54 | Return (Ones) |
| 55 | } |
| 56 | } |
| 57 | Increment(Local4) |
| 58 | } |
| 59 | |
| 60 | If (LLess(Local4, Local5)) { |
| 61 | Return (One) |
| 62 | } Else { |
| 63 | If (LLess(Local4, Local6)) { |
| 64 | Return (Ones) |
| 65 | } Else { |
| 66 | Return (Zero) |
| 67 | } |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | /* |
| 72 | * WCMP - Weak string compare |
| 73 | * |
| 74 | * Checks to find Arg1 at beginning of Arg0. |
| 75 | * Fails if length(Arg0) < length(Arg1). |
| 76 | * Returns 0 on fail, 1 on pass. |
| 77 | */ |
| 78 | Method(WCMP, 2) |
| 79 | { |
| 80 | Store(S2BF(Arg0), Local0) |
| 81 | Store(S2BF(Arg1), Local1) |
| 82 | If (LLess(SLEN(Arg0), SLEN(Arg1))) { |
| 83 | Return (Zero) |
| 84 | } |
| 85 | Store(Zero, Local2) |
| 86 | Store(SLEN(Arg1), Local3) |
| 87 | |
| 88 | While (LLess(Local2, Local3)) { |
| 89 | If (LNotEqual(Derefof(Index(Local0, Local2)), |
| 90 | Derefof(Index(Local1, Local2)))) { |
| 91 | Return (Zero) |
| 92 | } |
| 93 | Increment(Local2) |
| 94 | } |
| 95 | |
| 96 | Return (One) |
| 97 | } |
| 98 | |
| 99 | /* |
| 100 | * I2BM - Returns Bit Map |
| 101 | * |
| 102 | * Arg0 = IRQ Number (0-15) |
| 103 | */ |
| 104 | Method(I2BM, 1) |
| 105 | { |
| 106 | Store(0, Local0) |
| 107 | If (LNotEqual(Arg0, 0)) { |
| 108 | Store(1, Local1) |
| 109 | ShiftLeft(Local1, Arg0, Local0) |
| 110 | } |
| 111 | |
| 112 | Return (Local0) |
| 113 | } |