1 /** @file 2 I/O Library for EBC. 3 4 EBC does not support port I/O. All APIs in this file ASSERT(). 5 6 Copyright (c) 2015, Intel Corporation. All rights reserved.<BR> 7 This program and the accompanying materials 8 are licensed and made available under the terms and conditions of the BSD License 9 which accompanies this distribution. The full text of the license may be found at 10 http://opensource.org/licenses/bsd-license.php. 11 12 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 13 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 14 15 **/ 16 17 #include "BaseIoLibIntrinsicInternal.h" 18 19 /** 20 Reads an 8-bit I/O port. 21 22 Reads the 8-bit I/O port specified by Port. The 8-bit read value is returned. 23 This function must guarantee that all I/O read and write operations are 24 serialized. 25 26 If 8-bit I/O port operations are not supported, then ASSERT(). 27 28 @param Port The I/O port to read. 29 30 @return The value read. 31 32 **/ 33 UINT8 34 EFIAPI 35 IoRead8 ( 36 IN UINTN Port 37 ) 38 { 39 ASSERT (FALSE); 40 return 0; 41 } 42 43 /** 44 Writes an 8-bit I/O port. 45 46 Writes the 8-bit I/O port specified by Port with the value specified by Value 47 and returns Value. This function must guarantee that all I/O read and write 48 operations are serialized. 49 50 If 8-bit I/O port operations are not supported, then ASSERT(). 51 52 @param Port The I/O port to write. 53 @param Value The value to write to the I/O port. 54 55 @return The value written to the I/O port. 56 57 **/ 58 UINT8 59 EFIAPI 60 IoWrite8 ( 61 IN UINTN Port, 62 IN UINT8 Value 63 ) 64 { 65 ASSERT (FALSE); 66 return 0; 67 } 68 69 /** 70 Reads a 16-bit I/O port. 71 72 Reads the 16-bit I/O port specified by Port. The 16-bit read value is returned. 73 This function must guarantee that all I/O read and write operations are 74 serialized. 75 76 If 16-bit I/O port operations are not supported, then ASSERT(). 77 If Port is not aligned on a 16-bit boundary, then ASSERT(). 78 79 @param Port The I/O port to read. 80 81 @return The value read. 82 83 **/ 84 UINT16 85 EFIAPI 86 IoRead16 ( 87 IN UINTN Port 88 ) 89 { 90 ASSERT (FALSE); 91 return 0; 92 } 93 94 /** 95 Writes a 16-bit I/O port. 96 97 Writes the 16-bit I/O port specified by Port with the value specified by Value 98 and returns Value. This function must guarantee that all I/O read and write 99 operations are serialized. 100 101 If 16-bit I/O port operations are not supported, then ASSERT(). 102 If Port is not aligned on a 16-bit boundary, then ASSERT(). 103 104 @param Port The I/O port to write. 105 @param Value The value to write to the I/O port. 106 107 @return The value written to the I/O port. 108 109 **/ 110 UINT16 111 EFIAPI 112 IoWrite16 ( 113 IN UINTN Port, 114 IN UINT16 Value 115 ) 116 { 117 ASSERT (FALSE); 118 return 0; 119 } 120 121 /** 122 Reads a 32-bit I/O port. 123 124 Reads the 32-bit I/O port specified by Port. The 32-bit read value is returned. 125 This function must guarantee that all I/O read and write operations are 126 serialized. 127 128 If 32-bit I/O port operations are not supported, then ASSERT(). 129 If Port is not aligned on a 32-bit boundary, then ASSERT(). 130 131 @param Port The I/O port to read. 132 133 @return The value read. 134 135 **/ 136 UINT32 137 EFIAPI 138 IoRead32 ( 139 IN UINTN Port 140 ) 141 { 142 ASSERT (FALSE); 143 return 0; 144 } 145 146 /** 147 Writes a 32-bit I/O port. 148 149 Writes the 32-bit I/O port specified by Port with the value specified by Value 150 and returns Value. This function must guarantee that all I/O read and write 151 operations are serialized. 152 153 If 32-bit I/O port operations are not supported, then ASSERT(). 154 If Port is not aligned on a 32-bit boundary, then ASSERT(). 155 156 @param Port The I/O port to write. 157 @param Value The value to write to the I/O port. 158 159 @return The value written to the I/O port. 160 161 **/ 162 UINT32 163 EFIAPI 164 IoWrite32 ( 165 IN UINTN Port, 166 IN UINT32 Value 167 ) 168 { 169 ASSERT (FALSE); 170 return 0; 171 } 172
