diff options
Diffstat (limited to 'ArmPlatformPkg/ArmVExpressPkg/ArmVExpressDxe/Arm/ArmFvpDxeArm.c')
-rw-r--r-- | ArmPlatformPkg/ArmVExpressPkg/ArmVExpressDxe/Arm/ArmFvpDxeArm.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/ArmPlatformPkg/ArmVExpressPkg/ArmVExpressDxe/Arm/ArmFvpDxeArm.c b/ArmPlatformPkg/ArmVExpressPkg/ArmVExpressDxe/Arm/ArmFvpDxeArm.c new file mode 100644 index 0000000000..7ac89ad90a --- /dev/null +++ b/ArmPlatformPkg/ArmVExpressPkg/ArmVExpressDxe/Arm/ArmFvpDxeArm.c @@ -0,0 +1,85 @@ +/** @file
+
+ Copyright (c) 2014, 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/ArmPlatformLib.h> // To get Core Count
+
+//
+// Description of the four ARM model platforms :
+// just the platform id for the time being.
+// 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_A9x4 },
+ { ARM_FVP_VEXPRESS_A15x1 },
+ { ARM_FVP_VEXPRESS_A15x2 },
+ { ARM_FVP_VEXPRESS_A15x4 },
+ { 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
+ )
+{
+ UINT32 SysId;
+ UINTN CpuType;
+ EFI_STATUS Status;
+ UINTN CoreCount;
+
+ ASSERT (Platform != NULL);
+
+ CpuType = 0;
+ Status = EFI_NOT_FOUND;
+ *Platform = NULL;
+
+ SysId = MmioRead32 (ARM_VE_SYS_ID_REG);
+ if (SysId == ARM_RTSM_SYS_ID) {
+ // Get the Cortex-A version
+ CpuType = (ArmReadMidr () >> 4) & ARM_CPU_TYPE_MASK;
+ if (CpuType == ARM_CPU_TYPE_A9) {
+ Status = ArmVExpressGetPlatformFromId (ARM_FVP_VEXPRESS_A9x4, Platform);
+ } else if (CpuType == ARM_CPU_TYPE_A15) {
+ CoreCount = ArmGetCpuCountPerCluster ();
+ if (CoreCount == 1) {
+ Status = ArmVExpressGetPlatformFromId (ARM_FVP_VEXPRESS_A15x1, Platform);
+ } else if (CoreCount == 2) {
+ Status = ArmVExpressGetPlatformFromId (ARM_FVP_VEXPRESS_A15x2, Platform);
+ } else if (CoreCount == 4) {
+ Status = ArmVExpressGetPlatformFromId (ARM_FVP_VEXPRESS_A15x4, Platform);
+ }
+ }
+ }
+
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_ERROR, "Unsupported platform (SysId:0x%X, CpuType:0x%X)\n", SysId, CpuType));
+ ASSERT_EFI_ERROR (Status);
+ }
+
+ return Status;
+}
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