d0c1d371fb
There are three FVP variants for the Base and Foundation models: - model with GICv2 legacy memory map (same location as the Versatile Express model) - model with GICv2 and Base model memory map - model with GICv3 and Base model memory map The new code detects the variants to load the appropriate device tree. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Olivier Martin <olivier.martin@arm.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16932 6f19259b-4bc3-4df7-8a09-765794883524
115 lines
4.1 KiB
C
115 lines
4.1 KiB
C
/** @file
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Copyright (c) 2014-2015, ARM Ltd. All rights reserved.
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This program and the accompanying materials are licensed and made available
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under the terms and conditions of the BSD License which accompanies this
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distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
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WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "ArmVExpressInternal.h"
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#include <Library/ArmGicLib.h>
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//
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// Description of the AARCH64 model platforms :
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// just the platform id for the time being.
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// Platform ids are defined in ArmVExpressInternal.h for
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// all "ArmVExpress-like" platforms (AARCH64 or ARM architecture,
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// model or hardware platforms).
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//
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CONST ARM_VEXPRESS_PLATFORM ArmVExpressPlatforms[] = {
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{ ARM_FVP_VEXPRESS_AEMv8x4 },
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{ ARM_FVP_BASE_AEMv8x4_AEMv8x4_GICV2 },
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{ ARM_FVP_BASE_AEMv8x4_AEMv8x4_GICV2_LEGACY },
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{ ARM_FVP_BASE_AEMv8x4_AEMv8x4_GICV3 },
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{ ARM_FVP_FOUNDATION_GICV2 },
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{ ARM_FVP_FOUNDATION_GICV2_LEGACY },
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{ ARM_FVP_FOUNDATION_GICV3 },
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{ ARM_FVP_VEXPRESS_UNKNOWN }
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};
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/**
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Get information about the VExpress platform the firmware is running on.
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@param[out] Platform Address where the pointer to the platform information
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(type ARM_VEXPRESS_PLATFORM*) should be stored.
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The returned pointer does not point to an allocated
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memory area.
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@retval EFI_SUCCESS The platform information was returned.
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@retval EFI_NOT_FOUND The platform was not recognised.
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**/
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EFI_STATUS
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ArmVExpressGetPlatform (
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OUT CONST ARM_VEXPRESS_PLATFORM** Platform
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)
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{
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EFI_STATUS Status;
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UINT32 SysId;
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UINT32 FvpSysId;
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UINT32 VariantSysId;
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ARM_GIC_ARCH_REVISION GicRevision;
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ASSERT (Platform != NULL);
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Status = EFI_NOT_FOUND;
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SysId = MmioRead32 (ARM_VE_SYS_ID_REG);
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if (SysId != ARM_RTSM_SYS_ID) {
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// Remove the GIC variant to identify if we are running on the FVP Base or
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// Foundation models
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FvpSysId = SysId & (ARM_FVP_SYS_ID_HBI_MASK |
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ARM_FVP_SYS_ID_PLAT_MASK );
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// Extract the variant from the SysId
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VariantSysId = SysId & ARM_FVP_SYS_ID_VARIANT_MASK;
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if (FvpSysId == ARM_FVP_BASE_BOARD_SYS_ID) {
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if (VariantSysId == ARM_FVP_GIC_VE_MMAP) {
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// FVP Base Model with legacy GIC memory map
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Status = ArmVExpressGetPlatformFromId (ARM_FVP_BASE_AEMv8x4_AEMv8x4_GICV2_LEGACY, Platform);
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} else {
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GicRevision = ArmGicGetSupportedArchRevision ();
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if (GicRevision == ARM_GIC_ARCH_REVISION_2) {
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// FVP Base Model with GICv2 support
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Status = ArmVExpressGetPlatformFromId (ARM_FVP_BASE_AEMv8x4_AEMv8x4_GICV2, Platform);
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} else {
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// FVP Base Model with GICv3 support
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Status = ArmVExpressGetPlatformFromId (ARM_FVP_BASE_AEMv8x4_AEMv8x4_GICV3, Platform);
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}
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}
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} else if (FvpSysId == ARM_FVP_FOUNDATION_BOARD_SYS_ID) {
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if (VariantSysId == ARM_FVP_GIC_VE_MMAP) {
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// FVP Foundation Model with legacy GIC memory map
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Status = ArmVExpressGetPlatformFromId (ARM_FVP_FOUNDATION_GICV2_LEGACY, Platform);
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} else {
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GicRevision = ArmGicGetSupportedArchRevision ();
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if (GicRevision == ARM_GIC_ARCH_REVISION_2) {
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// FVP Foundation Model with GICv2
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Status = ArmVExpressGetPlatformFromId (ARM_FVP_FOUNDATION_GICV2, Platform);
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} else {
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// FVP Foundation Model with GICv3
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Status = ArmVExpressGetPlatformFromId (ARM_FVP_FOUNDATION_GICV3, Platform);
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}
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}
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}
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} else {
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// FVP Versatile Express AEMv8
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Status = ArmVExpressGetPlatformFromId (ARM_FVP_VEXPRESS_AEMv8x4, Platform);
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}
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if (EFI_ERROR (Status)) {
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DEBUG ((EFI_D_ERROR, "Unsupported AArch64 RTSM (SysId:0x%X).\n", SysId));
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ASSERT_EFI_ERROR (Status);
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}
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return Status;
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}
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