zbao | 7d94cf9 | 2012-07-02 14:19:14 +0800 | [diff] [blame] | 1 | /* $NoKeywords:$ */ |
| 2 | /** |
| 3 | * @file |
| 4 | * |
| 5 | * FCH memory access lib |
| 6 | * |
| 7 | * |
| 8 | * |
| 9 | * @xrefitem bom "File Content Label" "Release Content" |
| 10 | * @e project: AGESA |
| 11 | * @e sub-project: FCH |
| 12 | * @e \$Revision: 63425 $ @e \$Date: 2011-12-22 11:24:10 -0600 (Thu, 22 Dec 2011) $ |
| 13 | * |
| 14 | */ |
| 15 | /* |
| 16 | ***************************************************************************** |
| 17 | * |
Siyuan Wang | 641f00c | 2013-06-08 11:50:55 +0800 | [diff] [blame] | 18 | * Copyright (c) 2008 - 2012, Advanced Micro Devices, Inc. |
| 19 | * All rights reserved. |
| 20 | * |
| 21 | * Redistribution and use in source and binary forms, with or without |
| 22 | * modification, are permitted provided that the following conditions are met: |
| 23 | * * Redistributions of source code must retain the above copyright |
| 24 | * notice, this list of conditions and the following disclaimer. |
| 25 | * * Redistributions in binary form must reproduce the above copyright |
| 26 | * notice, this list of conditions and the following disclaimer in the |
| 27 | * documentation and/or other materials provided with the distribution. |
| 28 | * * Neither the name of Advanced Micro Devices, Inc. nor the names of |
| 29 | * its contributors may be used to endorse or promote products derived |
| 30 | * from this software without specific prior written permission. |
| 31 | * |
| 32 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
| 33 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 34 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 35 | * DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY |
| 36 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 37 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 38 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 39 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 40 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 41 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
zbao | 7d94cf9 | 2012-07-02 14:19:14 +0800 | [diff] [blame] | 42 | **************************************************************************** |
| 43 | */ |
| 44 | #include "FchPlatform.h" |
| 45 | #include "Ids.h" |
| 46 | #define FILECODE PROC_FCH_COMMON_MEMLIB_FILECODE |
| 47 | |
| 48 | |
| 49 | /** |
| 50 | * ReadMem - Read FCH BAR Memory |
| 51 | * |
| 52 | * @param[in] Address - Memory BAR address |
| 53 | * @param[in] OpFlag - Access width |
| 54 | * @param[in] *ValuePtr - In/Out value pointer |
| 55 | * |
| 56 | */ |
| 57 | VOID |
| 58 | ReadMem ( |
| 59 | IN UINT32 Address, |
| 60 | IN UINT8 OpFlag, |
| 61 | IN VOID *ValuePtr |
| 62 | ) |
| 63 | { |
| 64 | OpFlag = OpFlag & 0x7f; |
| 65 | |
| 66 | switch ( OpFlag ) { |
| 67 | case AccessWidth8: |
| 68 | *((UINT8*)ValuePtr) = *((UINT8*) ((UINTN)Address)); |
| 69 | break; |
| 70 | |
| 71 | case AccessWidth16: |
| 72 | *((UINT16*)ValuePtr) = *((UINT16*) ((UINTN)Address)); |
| 73 | break; |
| 74 | |
| 75 | case AccessWidth32: |
| 76 | *((UINT32*)ValuePtr) = *((UINT32*) ((UINTN)Address)); |
| 77 | break; |
| 78 | |
| 79 | default: |
| 80 | ASSERT (FALSE); |
| 81 | break; |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | /** |
| 86 | * WriteMem - Write FCH BAR Memory |
| 87 | * |
| 88 | * @param[in] Address - Memory BAR address |
| 89 | * @param[in] OpFlag - Access width |
| 90 | * @param[in] *ValuePtr - In/Out Value pointer |
| 91 | * |
| 92 | */ |
| 93 | VOID |
| 94 | WriteMem ( |
| 95 | IN UINT32 Address, |
| 96 | IN UINT8 OpFlag, |
| 97 | IN VOID *ValuePtr |
| 98 | ) |
| 99 | { |
| 100 | OpFlag = OpFlag & 0x7f; |
| 101 | |
| 102 | switch ( OpFlag ) { |
| 103 | case AccessWidth8 : |
| 104 | *((UINT8*) ((UINTN)Address)) = *((UINT8*)ValuePtr); |
| 105 | break; |
| 106 | |
| 107 | case AccessWidth16: |
| 108 | *((UINT16*) ((UINTN)Address)) = *((UINT16*)ValuePtr); |
| 109 | break; |
| 110 | |
| 111 | case AccessWidth32: |
| 112 | *((UINT32*) ((UINTN)Address)) = *((UINT32*)ValuePtr); |
| 113 | break; |
| 114 | |
| 115 | default: |
| 116 | ASSERT (FALSE); |
| 117 | break; |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | /** |
| 122 | * RwMem - Read & Write FCH BAR Memory |
| 123 | * |
| 124 | * @param[in] Address - Memory BAR address |
| 125 | * @param[in] OpFlag - Access width |
| 126 | * @param[in] Mask - Mask Value of data |
| 127 | * @param[in] Data - Write data |
| 128 | * |
| 129 | */ |
| 130 | VOID |
| 131 | RwMem ( |
| 132 | IN UINT32 Address, |
| 133 | IN UINT8 OpFlag, |
| 134 | IN UINT32 Mask, |
| 135 | IN UINT32 Data |
| 136 | ) |
| 137 | { |
| 138 | UINT32 Result; |
| 139 | |
| 140 | ReadMem (Address, OpFlag, &Result); |
| 141 | Result = (Result & Mask) | Data; |
| 142 | WriteMem (Address, OpFlag, &Result); |
| 143 | } |
| 144 | |