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/** @file
Copyright (c) 2014-2015, ARM Ltd. All rights reserved.
This program and the accompanying materials are licensed and made available
under the terms and conditions of the BSD License which accompanies this
distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "ArmVExpressInternal.h"
#include <Library/ArmGicLib.h>
//
// Description of the AARCH64 model platforms :
// Platform ids are defined in ArmVExpressInternal.h for
// all "ArmVExpress-like" platforms (AARCH64 or ARM architecture,
// model or hardware platforms).
//
CONST ARM_VEXPRESS_PLATFORM ArmVExpressPlatforms[] = {
{ ARM_FVP_VEXPRESS_AEMv8x4, FixedPcdGetPtr(PcdFdtFvpVExpressAEMv8x4), L"rtsm_ve-aemv8a.dtb" },
{ ARM_FVP_BASE_AEMv8x4_AEMv8x4_GICV2, FixedPcdGetPtr(PcdFdtFvpBaseAEMv8x4GicV2), L"fvp-base-gicv2-psci.dtb" },
{ ARM_FVP_BASE_AEMv8x4_AEMv8x4_GICV2_LEGACY, FixedPcdGetPtr(PcdFdtFvpBaseAEMv8x4GicV2Legacy), L"fvp-base-gicv2legacy-psci.dtb" },
{ ARM_FVP_BASE_AEMv8x4_AEMv8x4_GICV3, FixedPcdGetPtr(PcdFdtFvpBaseAEMv8x4GicV3), L"fvp-base-gicv3-psci.dtb" },
{ ARM_FVP_FOUNDATION_GICV2, FixedPcdGetPtr(PcdFdtFvpFoundationGicV2), L"fvp-foundation-gicv2-psci.dtb" },
{ ARM_FVP_FOUNDATION_GICV2_LEGACY, FixedPcdGetPtr(PcdFdtFvpFoundationGicV2Legacy), L"fvp-foundation-gicv2legacy-psci.dtb" },
{ ARM_FVP_FOUNDATION_GICV3, FixedPcdGetPtr(PcdFdtFvpFoundationGicV3), L"fvp-foundation-gicv3-psci.dtb" },
{ ARM_FVP_VEXPRESS_UNKNOWN }
};
/**
Get information about the VExpress platform the firmware is running on.
@param[out] Platform Address where the pointer to the platform information
(type ARM_VEXPRESS_PLATFORM*) should be stored.
The returned pointer does not point to an allocated
memory area.
@retval EFI_SUCCESS The platform information was returned.
@retval EFI_NOT_FOUND The platform was not recognised.
**/
EFI_STATUS
ArmVExpressGetPlatform (
OUT CONST ARM_VEXPRESS_PLATFORM** Platform
)
{
EFI_STATUS Status;
UINT32 SysId;
UINT32 FvpSysId;
UINT32 VariantSysId;
ARM_GIC_ARCH_REVISION GicRevision;
ASSERT (Platform != NULL);
Status = EFI_NOT_FOUND;
SysId = MmioRead32 (ARM_VE_SYS_ID_REG);
if (SysId != ARM_RTSM_SYS_ID) {
// Remove the GIC variant to identify if we are running on the FVP Base or
// Foundation models
FvpSysId = SysId & (ARM_FVP_SYS_ID_HBI_MASK |
ARM_FVP_SYS_ID_PLAT_MASK );
// Extract the variant from the SysId
VariantSysId = SysId & ARM_FVP_SYS_ID_VARIANT_MASK;
if (FvpSysId == ARM_FVP_BASE_BOARD_SYS_ID) {
if (VariantSysId == ARM_FVP_GIC_VE_MMAP) {
// FVP Base Model with legacy GIC memory map
Status = ArmVExpressGetPlatformFromId (ARM_FVP_BASE_AEMv8x4_AEMv8x4_GICV2_LEGACY, Platform);
} else {
GicRevision = ArmGicGetSupportedArchRevision ();
if (GicRevision == ARM_GIC_ARCH_REVISION_2) {
// FVP Base Model with GICv2 support
Status = ArmVExpressGetPlatformFromId (ARM_FVP_BASE_AEMv8x4_AEMv8x4_GICV2, Platform);
} else {
// FVP Base Model with GICv3 support
Status = ArmVExpressGetPlatformFromId (ARM_FVP_BASE_AEMv8x4_AEMv8x4_GICV3, Platform);
}
}
} else if (FvpSysId == ARM_FVP_FOUNDATION_BOARD_SYS_ID) {
if (VariantSysId == ARM_FVP_GIC_VE_MMAP) {
// FVP Foundation Model with legacy GIC memory map
Status = ArmVExpressGetPlatformFromId (ARM_FVP_FOUNDATION_GICV2_LEGACY, Platform);
} else {
GicRevision = ArmGicGetSupportedArchRevision ();
if (GicRevision == ARM_GIC_ARCH_REVISION_2) {
// FVP Foundation Model with GICv2
Status = ArmVExpressGetPlatformFromId (ARM_FVP_FOUNDATION_GICV2, Platform);
} else {
// FVP Foundation Model with GICv3
Status = ArmVExpressGetPlatformFromId (ARM_FVP_FOUNDATION_GICV3, Platform);
}
}
}
} else {
// FVP Versatile Express AEMv8
Status = ArmVExpressGetPlatformFromId (ARM_FVP_VEXPRESS_AEMv8x4, Platform);
}
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "Unsupported AArch64 RTSM (SysId:0x%X).\n", SysId));
ASSERT_EFI_ERROR (Status);
}
return Status;
}
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