From: "chandni cherukuri" <chandni.cherukuri@arm.com>
To: devel@edk2.groups.io
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>,
Leif Lindholm <leif@nuviainc.com>,
Sami Mujawar <sami.mujawar@arm.com>,
Chandni Cherukuri <chandni.cherukuri@arm.com>
Subject: [edk2-platforms][PATCH V2 1/7] Platform/ARM/Morello: Add Platform library implementation
Date: Thu, 1 Apr 2021 20:05:31 +0530 [thread overview]
Message-ID: <20210401143537.4799-2-chandni.cherukuri@arm.com> (raw)
In-Reply-To: <20210401143537.4799-1-chandni.cherukuri@arm.com>
From: Anurag Koul <anurag.koul@arm.com>
This patch adds initial Morello Platform Library support.
It includes virtual memory map and helper functions for
platform initialization.
Co-authored-by: Chandni Cherukuri <chandni.cherukuri@arm.com>
Signed-off-by: Chandni Cherukuri <chandni.cherukuri@arm.com>
---
Platform/ARM/Morello/Library/PlatformLib/PlatformLib.inf | 52 +++++
Platform/ARM/Morello/Include/MorelloPlatform.h | 63 +++++++
Platform/ARM/Morello/Library/PlatformLib/PlatformLib.c | 99 ++++++++++
Platform/ARM/Morello/Library/PlatformLib/PlatformLibMem.c | 198 ++++++++++++++++++++
Platform/ARM/Morello/Library/PlatformLib/AArch64/Helper.S | 83 ++++++++
5 files changed, 495 insertions(+)
diff --git a/Platform/ARM/Morello/Library/PlatformLib/PlatformLib.inf b/Platform/ARM/Morello/Library/PlatformLib/PlatformLib.inf
new file mode 100644
index 000000000000..c2d7da3701d2
--- /dev/null
+++ b/Platform/ARM/Morello/Library/PlatformLib/PlatformLib.inf
@@ -0,0 +1,52 @@
+## @file
+# Platform Library for Morello platform.
+#
+# Copyright (c) 2021, ARM Limited. All rights reserved.<BR>
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+ INF_VERSION = 0x0001001B
+ BASE_NAME = ArmMorelloLib
+ FILE_GUID = 36853D86-7200-47B4-9408-E962A00963FD
+ MODULE_TYPE = BASE
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = ArmPlatformLib
+
+[Packages]
+ ArmPkg/ArmPkg.dec
+ ArmPlatformPkg/ArmPlatformPkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+ MdePkg/MdePkg.dec
+ Platform/ARM/Morello/MorelloPlatform.dec
+
+[Sources.common]
+ PlatformLib.c
+ PlatformLibMem.c
+
+[Sources.AARCH64]
+ AArch64/Helper.S | GCC
+
+[FixedPcd]
+ gArmMorelloTokenSpaceGuid.PcdDramBlock2Base
+ gArmMorelloTokenSpaceGuid.PcdPciBusMax
+ gArmMorelloTokenSpaceGuid.PcdPciBusMin
+ gArmMorelloTokenSpaceGuid.PcdPciExpressBaseAddress
+ gArmMorelloTokenSpaceGuid.PcdPciIoSize
+ gArmMorelloTokenSpaceGuid.PcdPciMmio32Base
+ gArmMorelloTokenSpaceGuid.PcdPciMmio32Size
+ gArmMorelloTokenSpaceGuid.PcdPciMmio64Base
+ gArmMorelloTokenSpaceGuid.PcdPciMmio64Size
+
+ gArmTokenSpaceGuid.PcdArmPrimaryCore
+ gArmTokenSpaceGuid.PcdArmPrimaryCoreMask
+ gArmTokenSpaceGuid.PcdSystemMemoryBase
+ gArmTokenSpaceGuid.PcdSystemMemorySize
+
+[Guids]
+ gEfiHobListGuid ## CONSUMES ## SystemTable
+
+[Ppis]
+ gArmMpCoreInfoPpiGuid
diff --git a/Platform/ARM/Morello/Include/MorelloPlatform.h b/Platform/ARM/Morello/Include/MorelloPlatform.h
new file mode 100644
index 000000000000..8b3233025958
--- /dev/null
+++ b/Platform/ARM/Morello/Include/MorelloPlatform.h
@@ -0,0 +1,63 @@
+/** @file
+
+ Copyright (c) 2021, ARM Limited. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#ifndef MORELLO_PLATFORM_H_
+#define MORELLO_PLATFORM_H_
+
+#define MORELLO_DRAM_BLOCK1_SIZE SIZE_2GB
+
+// ****************************************************************************
+// Platform Memory Map
+// ****************************************************************************
+
+// SubSystem Peripherals - UART0
+#define MORELLO_UART0_BASE 0x2A400000
+#define MORELLO_UART0_SZ SIZE_64KB
+
+// SubSystem Peripherals - UART1
+#define MORELLO_UART1_BASE 0x2A410000
+#define MORELLO_UART1_SZ SIZE_64KB
+
+// SubSystem Peripherals - Generic Watchdog
+#define MORELLO_GENERIC_WDOG_BASE 0x2A440000
+#define MORELLO_GENERIC_WDOG_SZ SIZE_128KB
+
+// SubSystem Peripherals - GIC(600)
+#define MORELLO_GIC_BASE 0x30000000
+#define MORELLO_GICR_BASE 0x300C0000
+#define MORELLO_GIC_SZ SIZE_256KB
+#define MORELLO_GICR_SZ SIZE_1MB
+
+// SubSystem non-secure SRAM
+#define MORELLO_NON_SECURE_SRAM_BASE 0x06000000
+#define MORELLO_NON_SECURE_SRAM_SZ SIZE_64KB
+
+// AXI Expansion peripherals
+#define MORELLO_EXP_PERIPH_BASE 0x1C000000
+#define MORELLO_EXP_PERIPH_BASE_SZ 0x1300000
+
+// Platform information structure base address
+#define MORELLO_PLAT_INFO_STRUCT_BASE MORELLO_NON_SECURE_SRAM_BASE
+
+/*
+ * Platform information structure stored in Non-secure SRAM. Platform
+ * information are passed from the trusted firmware with the below structure
+ * format. The elements of MORELLO_PLAT_INFO should be always in sync with
+ * the lower level firmware.
+ */
+#pragma pack(1)
+
+typedef struct {
+ UINT64 LocalDdrSize; ///< Local DDR memory size in Bytes
+ UINT64 RemoteDdrSize; ///< Remote DDR memory size in Bytes
+ UINT8 SlaveCount; ///< Slave count in C2C mode
+ UINT8 Mode; ///< 0 - Single Chip, 1 - Chip to Chip (C2C)
+} MORELLO_PLAT_INFO;
+
+#pragma pack()
+
+#endif //MORELLO_PLATFORM_H_
diff --git a/Platform/ARM/Morello/Library/PlatformLib/PlatformLib.c b/Platform/ARM/Morello/Library/PlatformLib/PlatformLib.c
new file mode 100644
index 000000000000..52318a62911a
--- /dev/null
+++ b/Platform/ARM/Morello/Library/PlatformLib/PlatformLib.c
@@ -0,0 +1,99 @@
+/** @file
+
+ Copyright (c) 2021, ARM Limited. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#include <Library/ArmPlatformLib.h>
+#include <Library/BaseLib.h>
+#include <Ppi/ArmMpCoreInfo.h>
+
+STATIC ARM_CORE_INFO mCoreInfoTable[] = {
+ { 0x0, 0x0 }, // Cluster 0, Core 0
+ { 0x0, 0x1 }, // Cluster 0, Core 1
+ { 0x1, 0x0 }, // Cluster 1, Core 0
+ { 0x1, 0x1 } // Cluster 1, Core 1
+};
+
+/**
+ Return the current Boot Mode.
+
+ This function returns the boot reason on the platform.
+
+**/
+EFI_BOOT_MODE
+ArmPlatformGetBootMode (
+ VOID
+ )
+{
+ return BOOT_WITH_FULL_CONFIGURATION;
+}
+
+/**
+ Initialize controllers that must be setup in the normal world.
+
+ This function is called by the ArmPlatformPkg/Pei or ArmPlatformPkg/Pei/PlatformPeim
+ in the PEI phase.
+
+ @param[in] MpId Processor ID
+
+**/
+RETURN_STATUS
+ArmPlatformInitialize (
+ IN UINTN MpId
+ )
+{
+ return RETURN_SUCCESS;
+}
+
+/**
+ Populate the Platform core information.
+
+ This function populates the ARM_MP_CORE_INFO_PPI with information about the cores.
+
+ @param[out] CoreCount Number of cores
+ @param[out] ArmCoreTable Table containing information about the cores
+
+**/
+EFI_STATUS
+PrePeiCoreGetMpCoreInfo (
+ OUT UINTN *CoreCount,
+ OUT ARM_CORE_INFO **ArmCoreTable
+ )
+{
+ *CoreCount = sizeof (mCoreInfoTable) / sizeof (ARM_CORE_INFO);
+ *ArmCoreTable = mCoreInfoTable;
+ return EFI_SUCCESS;
+}
+
+STATIC ARM_MP_CORE_INFO_PPI mMpCoreInfoPpi = {
+ PrePeiCoreGetMpCoreInfo
+};
+
+STATIC EFI_PEI_PPI_DESCRIPTOR gPlatformPpiTable[] = {
+ {
+ EFI_PEI_PPI_DESCRIPTOR_PPI,
+ &gArmMpCoreInfoPpiGuid,
+ &mMpCoreInfoPpi
+ }
+};
+
+/**
+ Return the Platform specific PPIs
+
+ This function exposes the Morello Platform Specific PPIs.
+
+ @param[out] PpiListSize Size in Bytes of the Platform PPI List
+ @param[out] PpiList Platform PPI List
+
+**/
+VOID
+ArmPlatformGetPlatformPpiList (
+ OUT UINTN *PpiListSize,
+ OUT EFI_PEI_PPI_DESCRIPTOR **PpiList
+ )
+{
+ *PpiListSize = sizeof (gPlatformPpiTable);
+ *PpiList = gPlatformPpiTable;
+}
diff --git a/Platform/ARM/Morello/Library/PlatformLib/PlatformLibMem.c b/Platform/ARM/Morello/Library/PlatformLib/PlatformLibMem.c
new file mode 100644
index 000000000000..54a870cfb3ba
--- /dev/null
+++ b/Platform/ARM/Morello/Library/PlatformLib/PlatformLibMem.c
@@ -0,0 +1,198 @@
+/** @file
+
+ Copyright (c) 2021, ARM Limited. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#include <Library/ArmPlatformLib.h>
+#include <Library/DebugLib.h>
+#include <Library/HobLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <MorelloPlatform.h>
+
+// The total number of descriptors, including the final "end-of-table" descriptor.
+#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS 12
+
+#if !defined(MDEPKG_NDEBUG)
+STATIC CONST CHAR8 *gTblAttrDesc[] = {
+ "UNCACHED_UNBUFFERED ",
+ "NONSECURE_UNCACHED_UNBUFFERED",
+ "WRITE_BACK ",
+ "NONSECURE_WRITE_BACK ",
+ "WB_NONSHAREABLE ",
+ "NONSECURE_WB_NONSHAREABLE ",
+ "WRITE_THROUGH ",
+ "NONSECURE_WRITE_THROUGH ",
+ "DEVICE ",
+ "NONSECURE_DEVICE "
+};
+#endif
+
+#define LOG_MEM(desc) DEBUG (( \
+ DEBUG_ERROR, \
+ desc, \
+ VirtualMemoryTable[Index].PhysicalBase, \
+ (VirtualMemoryTable[Index].PhysicalBase + \
+ VirtualMemoryTable[Index].Length - 1), \
+ VirtualMemoryTable[Index].Length, \
+ gTblAttrDesc[VirtualMemoryTable[Index].Attributes] \
+ ));
+
+/**
+ Returns the Virtual Memory Map of the platform.
+
+ This Virtual Memory Map is used by MemoryInitPei Module to initialize the MMU
+ on your platform.
+
+ @param[out] VirtualMemoryMap Array of ARM_MEMORY_REGION_DESCRIPTOR describing
+ a Physical-to-Virtual Memory mapping. This array
+ must be ended by a zero-filled entry.
+**/
+VOID
+ArmPlatformGetVirtualMemoryMap (
+ OUT ARM_MEMORY_REGION_DESCRIPTOR** VirtualMemoryMap
+ )
+{
+ UINTN Index;
+ ARM_MEMORY_REGION_DESCRIPTOR * VirtualMemoryTable;
+ EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttributes;
+ MORELLO_PLAT_INFO * PlatInfo;
+ UINT64 DramBlock2Size;
+
+ Index = 0;
+ DramBlock2Size = 0;
+
+ PlatInfo = (MORELLO_PLAT_INFO *)MORELLO_PLAT_INFO_STRUCT_BASE;
+ if (PlatInfo->LocalDdrSize > MORELLO_DRAM_BLOCK1_SIZE) {
+ DramBlock2Size = PlatInfo->LocalDdrSize - MORELLO_DRAM_BLOCK1_SIZE;
+ }
+
+ if (DramBlock2Size != 0) {
+ ResourceAttributes =
+ EFI_RESOURCE_ATTRIBUTE_PRESENT |
+ EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
+ EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
+ EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
+ EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE |
+ EFI_RESOURCE_ATTRIBUTE_TESTED;
+
+ BuildResourceDescriptorHob (
+ EFI_RESOURCE_SYSTEM_MEMORY,
+ ResourceAttributes,
+ FixedPcdGet64 (PcdDramBlock2Base),
+ DramBlock2Size
+ );
+ }
+
+ ASSERT (VirtualMemoryMap != NULL);
+
+ VirtualMemoryTable = AllocatePool (sizeof (ARM_MEMORY_REGION_DESCRIPTOR) *
+ MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS);
+ if (VirtualMemoryTable == NULL) {
+ return;
+ }
+
+ DEBUG ((
+ DEBUG_ERROR,
+ " Memory Map\n----------------------------------------------------------\n"
+ ));
+ DEBUG ((
+ DEBUG_ERROR,
+ "Description : START - END " \
+ "[ SIZE ] { ATTR }\n"
+ ));
+
+ // SubSystem Peripherals - Generic Watchdog
+ VirtualMemoryTable[Index].PhysicalBase = MORELLO_GENERIC_WDOG_BASE;
+ VirtualMemoryTable[Index].VirtualBase = MORELLO_GENERIC_WDOG_BASE;
+ VirtualMemoryTable[Index].Length = MORELLO_GENERIC_WDOG_SZ;
+ VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
+ LOG_MEM ("Generic Watchdog : 0x%016lx - 0x%016lx [ 0x%016lx ] { %a }\n");
+
+ // SubSystem Peripherals - GIC-600
+ VirtualMemoryTable[++Index].PhysicalBase = MORELLO_GIC_BASE;
+ VirtualMemoryTable[Index].VirtualBase = MORELLO_GIC_BASE;
+ VirtualMemoryTable[Index].Length = MORELLO_GIC_SZ;
+ VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
+ LOG_MEM ("GIC-600 : 0x%016lx - 0x%016lx [ 0x%016lx ] { %a }\n");
+
+ // SubSystem Peripherals - GICR-600
+ VirtualMemoryTable[++Index].PhysicalBase = MORELLO_GICR_BASE;
+ VirtualMemoryTable[Index].VirtualBase = MORELLO_GICR_BASE;
+ VirtualMemoryTable[Index].Length = MORELLO_GICR_SZ;
+ VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
+ LOG_MEM ("GICR-600 : 0x%016lx - 0x%016lx [ 0x%016lx ] { %a }\n");
+
+ // SubSystem non-secure SRAM
+ VirtualMemoryTable[++Index].PhysicalBase = MORELLO_NON_SECURE_SRAM_BASE;
+ VirtualMemoryTable[Index].VirtualBase = MORELLO_NON_SECURE_SRAM_BASE;
+ VirtualMemoryTable[Index].Length = MORELLO_NON_SECURE_SRAM_SZ;
+ VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED;
+ LOG_MEM ("non-secure SRAM : 0x%016lx - 0x%016lx [ 0x%016lx ] { %a }\n");
+
+ // SubSystem Pheripherals - UART0
+ VirtualMemoryTable[++Index].PhysicalBase = MORELLO_UART0_BASE;
+ VirtualMemoryTable[Index].VirtualBase = MORELLO_UART0_BASE;
+ VirtualMemoryTable[Index].Length = MORELLO_UART0_SZ;
+ VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
+ LOG_MEM ("UART0 : 0x%016lx - 0x%016lx [ 0x%016lx ] { %a }\n");
+
+ // DDR Primary
+ VirtualMemoryTable[++Index].PhysicalBase = PcdGet64 (PcdSystemMemoryBase);
+ VirtualMemoryTable[Index].VirtualBase = PcdGet64 (PcdSystemMemoryBase);
+ VirtualMemoryTable[Index].Length = PcdGet64 (PcdSystemMemorySize);
+ VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK;
+ LOG_MEM ("DDR Primary : 0x%016lx - 0x%016lx [ 0x%016lx ] { %a }\n");
+
+ // DDR Secondary
+ if (DramBlock2Size != 0) {
+ VirtualMemoryTable[++Index].PhysicalBase = PcdGet64 (PcdDramBlock2Base);
+ VirtualMemoryTable[Index].VirtualBase = PcdGet64 (PcdDramBlock2Base);
+ VirtualMemoryTable[Index].Length = DramBlock2Size;
+ VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK;
+ LOG_MEM ("DDR Secondary : 0x%016lx - 0x%016lx [ 0x%016lx ] { %a }\n");
+ }
+
+ // Expansion Peripherals
+ VirtualMemoryTable[++Index].PhysicalBase = MORELLO_EXP_PERIPH_BASE;
+ VirtualMemoryTable[Index].VirtualBase = MORELLO_EXP_PERIPH_BASE;
+ VirtualMemoryTable[Index].Length = MORELLO_EXP_PERIPH_BASE_SZ;
+ VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
+ LOG_MEM ("Expansion Peripherals : 0x%016lx - 0x%016lx [ 0x%016lx ] { %a }\n");
+
+ // PCI Configuration Space
+ VirtualMemoryTable[++Index].PhysicalBase = PcdGet64 (PcdPciExpressBaseAddress);
+ VirtualMemoryTable[Index].VirtualBase = PcdGet64 (PcdPciExpressBaseAddress);
+ VirtualMemoryTable[Index].Length = (FixedPcdGet32 (PcdPciBusMax) -
+ FixedPcdGet32 (PcdPciBusMin) + 1) *
+ SIZE_1MB;
+ VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
+ LOG_MEM ("PCI Configuration Space : 0x%016lx - 0x%016lx [ 0x%016lx ] { %a }\n");
+
+ // PCI MMIO32/IO Space
+ VirtualMemoryTable[++Index].PhysicalBase = PcdGet32 (PcdPciMmio32Base);
+ VirtualMemoryTable[Index].VirtualBase = PcdGet32 (PcdPciMmio32Base);
+ VirtualMemoryTable[Index].Length = PcdGet32 (PcdPciMmio32Size) +
+ PcdGet32 (PcdPciIoSize);
+ VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
+ LOG_MEM ("PCI MMIO32 & IO Region : 0x%016lx - 0x%016lx [ 0x%016lx ] { %a }\n");
+
+ // PCI MMIO64 Space
+ VirtualMemoryTable[++Index].PhysicalBase = PcdGet64 (PcdPciMmio64Base);
+ VirtualMemoryTable[Index].VirtualBase = PcdGet64 (PcdPciMmio64Base);
+ VirtualMemoryTable[Index].Length = PcdGet64 (PcdPciMmio64Size);
+ VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
+ LOG_MEM ("PCI MMIO64 Region : 0x%016lx - 0x%016lx [ 0x%016lx ] { %a }\n");
+
+ // End of Table
+ VirtualMemoryTable[++Index].PhysicalBase = 0;
+ VirtualMemoryTable[Index].VirtualBase = 0;
+ VirtualMemoryTable[Index].Length = 0;
+ VirtualMemoryTable[Index].Attributes = (ARM_MEMORY_REGION_ATTRIBUTES)0;
+
+ ASSERT ((Index) < MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS);
+ DEBUG ((DEBUG_INIT, "Virtual Memory Table setup complete.\n"));
+
+ *VirtualMemoryMap = VirtualMemoryTable;
+}
diff --git a/Platform/ARM/Morello/Library/PlatformLib/AArch64/Helper.S b/Platform/ARM/Morello/Library/PlatformLib/AArch64/Helper.S
new file mode 100644
index 000000000000..f6cc087a132c
--- /dev/null
+++ b/Platform/ARM/Morello/Library/PlatformLib/AArch64/Helper.S
@@ -0,0 +1,83 @@
+/** @file
+
+ Copyright (c) 2021, ARM Limited. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#include <AsmMacroIoLibV8.h>
+#include <Library/ArmLib.h>
+
+.text
+.align 3
+
+GCC_ASM_EXPORT(ArmPlatformPeiBootAction)
+GCC_ASM_EXPORT(ArmPlatformGetCorePosition)
+GCC_ASM_EXPORT(ArmPlatformGetPrimaryCoreMpId)
+GCC_ASM_EXPORT(ArmPlatformIsPrimaryCore)
+
+//
+// First platform specific function to be called in the PEI phase
+//
+// This function is actually the first function called by the PrePi
+// or PrePeiCore modules. It allows to retrieve arguments passed to
+// the UEFI firmware through the CPU registers.
+//
+ASM_PFX(ArmPlatformPeiBootAction):
+ ret
+
+//
+// Return the core position from the value of its MpId register
+//
+// This function returns core position from the position 0 in the processor.
+// This function might be called from assembler before any stack is set.
+//
+// @return Return the core position
+//
+//UINTN
+//ArmPlatformGetCorePosition (
+// IN UINTN MpId
+// );
+// With this function: CorePos = (ClusterId * 2) + CoreId
+ASM_PFX(ArmPlatformGetCorePosition):
+ and x1, x0, #ARM_CORE_MASK
+ and x0, x0, #ARM_CLUSTER_MASK
+ add x0, x1, x0, LSR #7
+ ret
+
+//
+// Return the MpId of the primary core
+//
+// This function returns the MpId of the primary core.
+// This function might be called from assembler before any stack is set.
+//
+// @return Return the MpId of the primary core
+//
+//UINTN
+//ArmPlatformGetPrimaryCoreMpId (
+// VOID
+// );
+ASM_PFX(ArmPlatformGetPrimaryCoreMpId):
+ MOV32 (w0, FixedPcdGet32(PcdArmPrimaryCore))
+ ret
+
+//
+// Return a non-zero value if the callee is the primary core
+//
+// This function returns a non-zero value if the callee is the primary core.
+// Primary core is the core responsible to initialize hardware and run UEFI.
+// This function might be called from assembler before any stack is set.
+//
+// @return Return a non-zero value if the callee is the primary core.
+//
+//UINTN
+//ArmPlatformIsPrimaryCore (
+// IN UINTN MpId
+// );
+ASM_PFX(ArmPlatformIsPrimaryCore):
+ MOV32 (w1, FixedPcdGet32(PcdArmPrimaryCoreMask))
+ and x0, x0, x1
+ MOV32 (w1, FixedPcdGet32(PcdArmPrimaryCore))
+ cmp w0, w1
+ cset x0, eq
+ ret
--
2.17.1
next prev parent reply other threads:[~2021-04-01 14:35 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-01 14:35 [edk2-platforms][PATCH V2 0/7] Add Morello FVP platform support chandni cherukuri
2021-04-01 14:35 ` chandni cherukuri [this message]
2021-04-08 18:05 ` [edk2-platforms][PATCH V2 1/7] Platform/ARM/Morello: Add Platform library implementation Sami Mujawar
2021-04-01 14:35 ` [edk2-platforms][PATCH V2 2/7] Platform/ARM/Morello: Add support for PciHostBridgeLib chandni cherukuri
2021-04-08 18:06 ` Sami Mujawar
2021-04-01 14:35 ` [edk2-platforms][PATCH V2 3/7] Platform/ARM/Morello: Add PlatformDxe driver for Morello chandni cherukuri
2021-04-08 18:06 ` Sami Mujawar
2021-04-01 14:35 ` [edk2-platforms][PATCH V2 4/7] Platform/ARM/Morello: Add Configuration Manager " chandni cherukuri
2021-04-12 9:18 ` Sami Mujawar
2021-04-01 14:35 ` [edk2-platforms][PATCH V2 5/7] Platform/ARM/Morello: Add initial support for Morello Platform chandni cherukuri
2021-04-12 9:18 ` Sami Mujawar
2021-04-01 14:35 ` [edk2-platforms][PATCH V2 6/7] Platform-ARM-Morello: Add Readme.md file chandni cherukuri
2021-04-12 9:19 ` Sami Mujawar
2021-04-01 14:35 ` [edk2-platforms][PATCH V2 7/7] Platform/ARM/Morello: Add virtio net support chandni cherukuri
2021-04-12 9:22 ` Sami Mujawar
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