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1bfda055 | 1 | /** @file\r |
2 | *\r | |
3 | * Copyright (c) 2011, ARM Limited. All rights reserved.\r | |
4 | * \r | |
5 | * This program and the accompanying materials \r | |
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 | #include <Library/BaseLib.h>\r | |
16 | #include <Library/IoLib.h>\r | |
17 | #include <Library/ArmTrustZoneLib.h>\r | |
18 | \r | |
19 | #define TZPC_DECPROT0_STATUS_REG 0x800\r | |
20 | #define TZPC_DECPROT0_SET_REG 0x804\r | |
21 | #define TZPC_DECPROT0_CLEAR_REG 0x808\r | |
22 | \r | |
23 | #define TZASC_CONFIGURATION_REG 0x000\r | |
24 | #define TZASC_REGIONS_REG 0x100\r | |
25 | #define TZASC_REGION0_LOW_ADDRESS_REG 0x100\r | |
26 | #define TZASC_REGION0_HIGH_ADDRESS_REG 0x104\r | |
27 | #define TZASC_REGION0_ATTRIBUTES 0x108\r | |
28 | \r | |
29 | /**\r | |
30 | FIXME: Need documentation\r | |
31 | **/\r | |
11c20f4e | 32 | EFI_STATUS\r |
33 | TZPCSetDecProtBits (\r | |
34 | IN UINTN TzpcBase,\r | |
35 | IN UINTN TzpcId,\r | |
36 | IN UINTN Bits\r | |
37 | )\r | |
38 | {\r | |
39 | if (TzpcId > TZPC_DECPROT_MAX) {\r | |
40 | return EFI_INVALID_PARAMETER;\r | |
41 | }\r | |
1bfda055 | 42 | \r |
11c20f4e | 43 | MmioWrite32 ((UINTN)TzpcBase + TZPC_DECPROT0_SET_REG + (TzpcId * 0x0C), Bits);\r |
1bfda055 | 44 | \r |
11c20f4e | 45 | return EFI_SUCCESS;\r |
1bfda055 | 46 | }\r |
47 | \r | |
48 | /**\r | |
49 | FIXME: Need documentation\r | |
50 | **/\r | |
11c20f4e | 51 | EFI_STATUS\r |
52 | TZPCClearDecProtBits (\r | |
53 | IN UINTN TzpcBase,\r | |
54 | IN UINTN TzpcId,\r | |
55 | IN UINTN Bits\r | |
56 | )\r | |
57 | {\r | |
58 | if (TzpcId> TZPC_DECPROT_MAX) {\r | |
59 | return EFI_INVALID_PARAMETER;\r | |
60 | }\r | |
1bfda055 | 61 | \r |
11c20f4e | 62 | MmioWrite32 ((UINTN)TzpcBase + TZPC_DECPROT0_CLEAR_REG + (TzpcId * 0x0C), Bits);\r |
1bfda055 | 63 | \r |
11c20f4e | 64 | return EFI_SUCCESS;\r |
1bfda055 | 65 | }\r |
66 | \r | |
67 | /**\r | |
68 | FIXME: Need documentation\r | |
69 | **/\r | |
11c20f4e | 70 | UINT32\r |
71 | TZASCGetNumRegions (\r | |
72 | IN UINTN TzascBase\r | |
73 | )\r | |
74 | {\r | |
75 | return (MmioRead32 ((UINTN)TzascBase + TZASC_CONFIGURATION_REG) & 0xF);\r | |
1bfda055 | 76 | }\r |
77 | \r | |
78 | /**\r | |
79 | FIXME: Need documentation\r | |
80 | **/\r | |
11c20f4e | 81 | EFI_STATUS\r |
82 | TZASCSetRegion (\r | |
83 | IN INTN TzascBase,\r | |
84 | IN UINTN RegionId,\r | |
85 | IN UINTN Enabled,\r | |
86 | IN UINTN LowAddress,\r | |
87 | IN UINTN HighAddress,\r | |
88 | IN UINTN Size,\r | |
89 | IN UINTN Security\r | |
90 | )\r | |
91 | {\r | |
92 | UINT32* Region;\r | |
1bfda055 | 93 | \r |
11c20f4e | 94 | if (RegionId > TZASCGetNumRegions(TzascBase)) {\r |
95 | return EFI_INVALID_PARAMETER;\r | |
96 | }\r | |
1bfda055 | 97 | \r |
11c20f4e | 98 | Region = (UINT32*)((UINTN)TzascBase + TZASC_REGIONS_REG + (RegionId * 0x10));\r |
1bfda055 | 99 | \r |
11c20f4e | 100 | MmioWrite32((UINTN)(Region), LowAddress&0xFFFF8000);\r |
2ac288f9 | 101 | MmioWrite32((UINTN)(Region+1), HighAddress);\r |
102 | MmioWrite32((UINTN)(Region+2), ((Security & 0xF) <<28) | ((Size & 0x3F) << 1) | (Enabled & 0x1));\r | |
1bfda055 | 103 | \r |
11c20f4e | 104 | return EFI_SUCCESS;\r |
1bfda055 | 105 | }\r |