Fix issue with fixing tabs.

[mirror_edk2.git] / ArmPkg / Library / ArmTrustZoneLib / ArmTrustZone.c

/** @file\r
*\r
*  Copyright (c) 2011, ARM Limited. All rights reserved.\r
*  \r
*  This program and the accompanying materials                          \r
*  are licensed and made available under the terms and conditions of the BSD License         \r
*  which accompanies this distribution.  The full text of the license may be found at        \r
*  http://opensource.org/licenses/bsd-license.php                                            \r
*\r
*  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     \r
*  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             \r
*\r
**/\r
\r
#include <Library/BaseLib.h>\r
#include <Library/IoLib.h>\r
#include <Library/ArmTrustZoneLib.h>\r
\r
#define TZPC_DECPROT0_STATUS_REG        0x800\r
#define TZPC_DECPROT0_SET_REG           0x804\r
#define TZPC_DECPROT0_CLEAR_REG         0x808\r
\r
#define TZASC_CONFIGURATION_REG         0x000\r
#define TZASC_REGIONS_REG               0x100\r
#define TZASC_REGION0_LOW_ADDRESS_REG   0x100\r
#define TZASC_REGION0_HIGH_ADDRESS_REG  0x104\r
#define TZASC_REGION0_ATTRIBUTES        0x108\r
\r
/**\r
    FIXME: Need documentation\r
**/\r
EFI_STATUS TZPCSetDecProtBits(UINTN TzpcBase, UINTN TzpcId, UINTN Bits) {\r
    if (TzpcId > TZPC_DECPROT_MAX) {\r
        return EFI_INVALID_PARAMETER;\r
    }\r
\r
    MmioWrite32((UINTN)TzpcBase + TZPC_DECPROT0_SET_REG + (TzpcId * 0x0C), Bits);\r
\r
    return EFI_SUCCESS;\r
}\r
\r
/**\r
    FIXME: Need documentation\r
**/\r
EFI_STATUS TZPCClearDecProtBits(UINTN TzpcBase, UINTN TzpcId, UINTN Bits) {\r
    if (TzpcId> TZPC_DECPROT_MAX) {\r
        return EFI_INVALID_PARAMETER;\r
    }\r
\r
    MmioWrite32((UINTN)TzpcBase + TZPC_DECPROT0_CLEAR_REG + (TzpcId * 0x0C), Bits);\r
\r
    return EFI_SUCCESS;\r
}\r
\r
/**\r
    FIXME: Need documentation\r
**/\r
UINT32 TZASCGetNumRegions(UINTN TzascBase) {\r
    return (MmioRead32((UINTN)TzascBase + TZASC_CONFIGURATION_REG) & 0xF);\r
}\r
\r
/**\r
    FIXME: Need documentation\r
**/\r
EFI_STATUS TZASCSetRegion(UINTN TzascBase, UINTN RegionId, UINTN Enabled, UINTN LowAddress, UINTN HighAddress, UINTN Size, UINTN Security) {\r
    UINT32*     Region;\r
\r
    if (RegionId > TZASCGetNumRegions(TzascBase)) {\r
        return EFI_INVALID_PARAMETER;\r
    }\r
\r
    Region = (UINT32*)((UINTN)TzascBase + TZASC_REGIONS_REG + (RegionId * 0x10));\r
\r
    MmioWrite32((UINTN)(Region), LowAddress&0xFFFF8000);\r
  MmioWrite32((UINTN)(Region+1), HighAddress);\r
  MmioWrite32((UINTN)(Region+2), ((Security & 0xF) <<28) | ((Size & 0x3F) << 1) | (Enabled & 0x1));\r
\r
    return EFI_SUCCESS;\r
}\r