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26a76fbc | 1 | /** @file\r |
a3318eaf | 2 | This file is for functins related to assign and free Framework HII handle number.\r |
d4775f2a | 3 | \r |
584d5652 HT |
4 | Copyright (c) 2008 - 2010, Intel Corporation. All rights reserved.<BR>\r |
5 | This program and the accompanying materials\r | |
d4775f2a | 6 | are licensed and made available under the terms and conditions of the BSD License\r |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | \r | |
16 | #include "HiiHandle.h"\r | |
17 | \r | |
18 | //\r | |
19 | // FRAMEWORK_EFI_HII_HANDLE\r | |
20 | //\r | |
21 | UINT8 mHandle[1024 * 8] = {0};\r | |
22 | \r | |
3321fa09 | 23 | /**\r |
24 | \r | |
25 | Initialize the Framework Hii Handle database.\r | |
26 | \r | |
27 | **/\r | |
d4775f2a | 28 | VOID\r |
29 | InitHiiHandleDatabase (\r | |
30 | VOID\r | |
31 | )\r | |
32 | {\r | |
33 | //\r | |
34 | // FRAMEWORK_EFI_HII_HANDLE 0 is reserved.\r | |
35 | // Set Bit 0 in mHandle[0] to 1.\r | |
36 | //\r | |
37 | mHandle[0] |= 1 << 0;\r | |
38 | }\r | |
39 | \r | |
3321fa09 | 40 | /**\r |
41 | Allocate a new Framework HII handle. \r | |
42 | \r | |
43 | @param Handle Returns the new Framework HII Handle assigned.\r | |
44 | \r | |
45 | @retval EFI_SUCCESS A new Framework HII Handle is assigned.\r | |
46 | @retval EFI_OUT_OF_RESOURCE The Framework HII Handle database is depleted.\r | |
d4775f2a | 47 | \r |
3321fa09 | 48 | **/\r |
d4775f2a | 49 | EFI_STATUS\r |
50 | AllocateHiiHandle (\r | |
3321fa09 | 51 | OUT FRAMEWORK_EFI_HII_HANDLE *Handle\r |
d4775f2a | 52 | )\r |
53 | {\r | |
54 | UINTN Index;\r | |
55 | \r | |
56 | for (Index = 0; Index < sizeof (mHandle) * 8; Index++) {\r | |
57 | if ((mHandle[Index / 8] & (1 << (Index % 8))) == 0) {\r | |
98b16b9d | 58 | mHandle[Index / 8] = (UINT8) (mHandle[Index / 8] | (1 << (Index % 8)));\r |
d4775f2a | 59 | *Handle = (FRAMEWORK_EFI_HII_HANDLE) Index;\r |
60 | ASSERT (*Handle != 0);\r | |
61 | return EFI_SUCCESS;\r | |
62 | }\r | |
63 | }\r | |
64 | \r | |
65 | return EFI_OUT_OF_RESOURCES;\r | |
66 | }\r | |
67 | \r | |
3321fa09 | 68 | /**\r |
69 | Free Framework HII handle. \r | |
70 | \r | |
71 | @param Handle The Framework HII Handle to be freed.\r | |
72 | \r | |
73 | **/\r | |
d4775f2a | 74 | VOID\r |
75 | FreeHiiHandle (\r | |
3321fa09 | 76 | IN FRAMEWORK_EFI_HII_HANDLE Handle\r |
d4775f2a | 77 | )\r |
78 | {\r | |
79 | UINT16 Num;\r | |
80 | \r | |
81 | Num = (UINT16) Handle;\r | |
82 | \r | |
fed39e58 | 83 | ASSERT ((mHandle [Num / 8] & (1 << (Num % 8))) != 0);\r |
98b16b9d | 84 | mHandle [Num / 8] = (UINT8) (mHandle [Num / 8] & (~(1 << (Num % 8))));\r |
d4775f2a | 85 | }\r |