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192f6d4c | 1 | /*++\r |
2 | \r | |
3 | Copyright (c) 2006, Intel Corporation \r | |
4 | All rights reserved. This program and the accompanying materials \r | |
5 | are licensed and made available under the terms and conditions of the BSD License \r | |
6 | which accompanies this distribution. The full text of the license may be found at \r | |
7 | http://opensource.org/licenses/bsd-license.php \r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
11 | \r | |
12 | Module Name:\r | |
13 | \r | |
14 | SwitchToCacheMode.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | Ipf CAR specific function used to switch to cache mode for the later memory access\r | |
19 | \r | |
20 | Revision History\r | |
21 | \r | |
22 | --*/\r | |
23 | \r | |
192f6d4c | 24 | #include "IpfPeiMain.h"\r |
25 | #include "IpfCpuCore.i"\r | |
26 | \r | |
27 | VOID\r | |
28 | SwitchToCacheMode (\r | |
29 | IN PEI_CORE_INSTANCE *CoreData\r | |
30 | )\r | |
31 | /*++\r | |
32 | \r | |
33 | Routine Description:\r | |
34 | \r | |
35 | Switch the PHIT pointers to cache mode after InstallPeiMemory in CAR.\r | |
36 | \r | |
37 | Arguments:\r | |
38 | \r | |
39 | CoreData - The PEI core Private Data\r | |
40 | \r | |
41 | Returns:\r | |
42 | \r | |
43 | --*/\r | |
44 | {\r | |
45 | EFI_HOB_HANDOFF_INFO_TABLE *Phit;\r | |
46 | \r | |
47 | if (CoreData == NULL) {\r | |
48 | //\r | |
49 | // the first call with CoreData as NULL.\r | |
50 | //\r | |
51 | return;\r | |
52 | }\r | |
53 | \r | |
54 | if ((GetHandOffStatus().r10 & 0xFF) == RecoveryFn) {\r | |
55 | CoreData->StackBase = CoreData->StackBase & CACHE_MODE_ADDRESS_MASK;\r | |
56 | CoreData->HobList.Raw = (UINT8 *)((UINTN)CoreData->HobList.Raw & CACHE_MODE_ADDRESS_MASK);\r | |
57 | \r | |
58 | //\r | |
59 | // Change the PHIT pointer value to cache mode\r | |
60 | //\r | |
61 | Phit = CoreData->HobList.HandoffInformationTable;\r | |
62 | \r | |
63 | Phit->EfiMemoryTop = Phit->EfiMemoryTop & CACHE_MODE_ADDRESS_MASK;\r | |
64 | Phit->EfiFreeMemoryTop = Phit->EfiFreeMemoryTop & CACHE_MODE_ADDRESS_MASK;\r | |
65 | Phit->EfiMemoryBottom = Phit->EfiMemoryBottom & CACHE_MODE_ADDRESS_MASK;\r | |
66 | Phit->EfiFreeMemoryBottom = Phit->EfiFreeMemoryBottom & CACHE_MODE_ADDRESS_MASK;\r | |
67 | Phit->EfiEndOfHobList = Phit->EfiEndOfHobList & CACHE_MODE_ADDRESS_MASK;\r | |
68 | }\r | |
69 | \r | |
70 | return;\r | |
71 | }\r |