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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 | |
32 | EFI_STATUS TZPCSetDecProtBits(UINTN TzpcBase, UINTN TzpcId, UINTN Bits) {\r | |
33 | if (TzpcId > TZPC_DECPROT_MAX) {\r | |
34 | return EFI_INVALID_PARAMETER;\r | |
35 | }\r | |
36 | \r | |
37 | MmioWrite32((UINTN)TzpcBase + TZPC_DECPROT0_SET_REG + (TzpcId * 0x0C), Bits);\r | |
38 | \r | |
39 | return EFI_SUCCESS;\r | |
40 | }\r | |
41 | \r | |
42 | /**\r | |
43 | FIXME: Need documentation\r | |
44 | **/\r | |
45 | EFI_STATUS TZPCClearDecProtBits(UINTN TzpcBase, UINTN TzpcId, UINTN Bits) {\r | |
46 | if (TzpcId> TZPC_DECPROT_MAX) {\r | |
47 | return EFI_INVALID_PARAMETER;\r | |
48 | }\r | |
49 | \r | |
50 | MmioWrite32((UINTN)TzpcBase + TZPC_DECPROT0_CLEAR_REG + (TzpcId * 0x0C), Bits);\r | |
51 | \r | |
52 | return EFI_SUCCESS;\r | |
53 | }\r | |
54 | \r | |
55 | /**\r | |
56 | FIXME: Need documentation\r | |
57 | **/\r | |
58 | UINT32 TZASCGetNumRegions(UINTN TzascBase) {\r | |
59 | return (MmioRead32((UINTN)TzascBase + TZASC_CONFIGURATION_REG) & 0xF);\r | |
60 | }\r | |
61 | \r | |
62 | /**\r | |
63 | FIXME: Need documentation\r | |
64 | **/\r | |
65 | EFI_STATUS TZASCSetRegion(UINTN TzascBase, UINTN RegionId, UINTN Enabled, UINTN LowAddress, UINTN HighAddress, UINTN Size, UINTN Security) {\r | |
66 | UINT32* Region;\r | |
67 | \r | |
68 | if (RegionId > TZASCGetNumRegions(TzascBase)) {\r | |
69 | return EFI_INVALID_PARAMETER;\r | |
70 | }\r | |
71 | \r | |
72 | Region = (UINT32*)((UINTN)TzascBase + TZASC_REGIONS_REG + (RegionId * 0x10));\r | |
73 | \r | |
74 | MmioWrite32((UINTN)(Region), LowAddress&0xFFFF8000);\r | |
2ac288f9 | 75 | MmioWrite32((UINTN)(Region+1), HighAddress);\r |
76 | MmioWrite32((UINTN)(Region+2), ((Security & 0xF) <<28) | ((Size & 0x3F) << 1) | (Enabled & 0x1));\r | |
1bfda055 | 77 | \r |
78 | return EFI_SUCCESS;\r | |
79 | }\r |