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system76-edk2/ArmPkg/ArmPkg.dec
Ard Biesheuvel 61a7b0ec63 ArmPkg/Gic: force GIC driver to run before CPU arch protocol driver 
Currently, the GIC driver has a static dependency on the CPU arch protocol
driver, so it can register its IRQ handler at init time. This means there
is a window between dispatch of the CPU driver and dispatch of the GIC
driver where any unexpected GIC state may trigger an interrupt which we
are not set up to handle yet. Note that this is even the case if we enter
UEFI with interrupts disabled at the CPU, given that any TPL manipulation
involving TPL_HIGH_LEVEL will unconditionally enable IRQs at the CPU side
regardless of whether they were enabled to begin with (but only as soon as
the CPU arch protocol is actually installed)

So let's reorder the GIC driver with the CPU driver, and let it run its
initialization that puts the GIC into a known state before enabling
interrupts. Move its installation of its IRQ handler to a protocol notify
callback on the CPU arch protocol so that it runs as soon as it becomes
available.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Tested-by: Marc Zyngier <marc.zyngier@arm.com>
2018-02-06 18:59:34 +00:00

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#/** @file
# ARM processor package.
#
# Copyright (c) 2009 - 2010, Apple Inc. All rights reserved.<BR>
# Copyright (c) 2011 - 2017, ARM Limited. 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.
#
#**/
[Defines]
DEC_SPECIFICATION = 0x00010005
PACKAGE_NAME = ArmPkg
PACKAGE_GUID = 5CFBD99E-3C43-4E7F-8054-9CDEAFF7710F
PACKAGE_VERSION = 0.1
################################################################################
#
# Include Section - list of Include Paths that are provided by this package.
# Comments are used for Keywords and Module Types.
#
# Supported Module Types:
# BASE SEC PEI_CORE PEIM DXE_CORE DXE_DRIVER DXE_RUNTIME_DRIVER DXE_SMM_DRIVER DXE_SAL_DRIVER UEFI_DRIVER UEFI_APPLICATION
#
################################################################################
[Includes.common]
Include # Root include for the package
[LibraryClasses.common]
ArmLib|Include/Library/ArmLib.h
ArmMmuLib|Include/Library/ArmMmuLib.h
SemihostLib|Include/Library/Semihosting.h
DefaultExceptionHandlerLib|Include/Library/DefaultExceptionHandlerLib.h
ArmDisassemblerLib|Include/Library/ArmDisassemblerLib.h
ArmGicArchLib|Include/Library/ArmGicArchLib.h
ArmSvcLib|Include/Library/ArmSvcLib.h
[Guids.common]
gArmTokenSpaceGuid = { 0xBB11ECFE, 0x820F, 0x4968, { 0xBB, 0xA6, 0xF7, 0x6A, 0xFE, 0x30, 0x25, 0x96 } }
## ARM MPCore table
# Include/Guid/ArmMpCoreInfo.h
gArmMpCoreInfoGuid = { 0xa4ee0728, 0xe5d7, 0x4ac5, {0xb2, 0x1e, 0x65, 0x8e, 0xd8, 0x57, 0xe8, 0x34} }
gArmGicDxeFileGuid = { 0xde371f7c, 0xdec4, 0x4d21, { 0xad, 0xf1, 0x59, 0x3a, 0xbc, 0xc1, 0x58, 0x82 } }
[Ppis]
## Include/Ppi/ArmMpCoreInfo.h
gArmMpCoreInfoPpiGuid = { 0x6847cc74, 0xe9ec, 0x4f8f, {0xa2, 0x9d, 0xab, 0x44, 0xe7, 0x54, 0xa8, 0xfc} }
[PcdsFeatureFlag.common]
gArmTokenSpaceGuid.PcdCpuDxeProduceDebugSupport|FALSE|BOOLEAN|0x00000001
# On ARM Architecture with the Security Extension, the address for the
# Vector Table can be mapped anywhere in the memory map. It means we can
# point the Exception Vector Table to its location in CpuDxe.
# By default we copy the Vector Table at PcdGet64(PcdCpuVectorBaseAddress)
gArmTokenSpaceGuid.PcdRelocateVectorTable|TRUE|BOOLEAN|0x00000022
# Set this PCD to TRUE if the Exception Vector is changed to add debugger support before
# it has been configured by the CPU DXE
gArmTokenSpaceGuid.PcdDebuggerExceptionSupport|FALSE|BOOLEAN|0x00000032
# Define if the spin-table mechanism is used by the secondary cores when booting
# Linux (instead of PSCI)
gArmTokenSpaceGuid.PcdArmLinuxSpinTable|FALSE|BOOLEAN|0x00000033
# Define if the GICv3 controller should use the GICv2 legacy
gArmTokenSpaceGuid.PcdArmGicV3WithV2Legacy|FALSE|BOOLEAN|0x00000042
[PcdsFeatureFlag.ARM]
# Whether to map normal memory as non-shareable. FALSE is the safe choice, but
# TRUE may be appropriate to fix performance problems if you don't care about
# hardware coherency (i.e., no virtualization or cache coherent DMA)
gArmTokenSpaceGuid.PcdNormalMemoryNonshareableOverride|FALSE|BOOLEAN|0x00000043
[PcdsFixedAtBuild.common]
gArmTokenSpaceGuid.PcdTrustzoneSupport|FALSE|BOOLEAN|0x00000006
# This PCD should be a FeaturePcd. But we used this PCD as an '#if' in an ASM file.
# Using a FeaturePcd make a '(BOOLEAN) casting for its value which is not understood by the preprocessor.
gArmTokenSpaceGuid.PcdVFPEnabled|0|UINT32|0x00000024
gArmTokenSpaceGuid.PcdCpuVectorBaseAddress|0xffff0000|UINT64|0x00000004
gArmTokenSpaceGuid.PcdCpuResetAddress|0x00000000|UINT32|0x00000005
#
# ARM Secure Firmware PCDs
#
gArmTokenSpaceGuid.PcdSecureFdBaseAddress|0|UINT64|0x00000015
gArmTokenSpaceGuid.PcdSecureFdSize|0|UINT32|0x00000016
gArmTokenSpaceGuid.PcdSecureFvBaseAddress|0x0|UINT64|0x0000002F
gArmTokenSpaceGuid.PcdSecureFvSize|0x0|UINT32|0x00000030
#
# ARM Hypervisor Firmware PCDs
#
gArmTokenSpaceGuid.PcdHypFdBaseAddress|0|UINT32|0x0000003A
gArmTokenSpaceGuid.PcdHypFdSize|0|UINT32|0x0000003B
gArmTokenSpaceGuid.PcdHypFvBaseAddress|0|UINT32|0x0000003C
gArmTokenSpaceGuid.PcdHypFvSize|0|UINT32|0x0000003D
# Use ClusterId + CoreId to identify the PrimaryCore
gArmTokenSpaceGuid.PcdArmPrimaryCoreMask|0xF03|UINT32|0x00000031
# The Primary Core is ClusterId[0] & CoreId[0]
gArmTokenSpaceGuid.PcdArmPrimaryCore|0|UINT32|0x00000037
#
# ARM L2x0 PCDs
#
gArmTokenSpaceGuid.PcdL2x0ControllerBase|0|UINT32|0x0000001B
#
# ARM Normal (or Non Secure) Firmware PCDs
#
gArmTokenSpaceGuid.PcdFdSize|0|UINT32|0x0000002C
gArmTokenSpaceGuid.PcdFvSize|0|UINT32|0x0000002E
#
# Value to add to a host address to obtain a device address, using
# unsigned 64-bit integer arithmetic on both ARM and AArch64. This
# means we can rely on truncation on overflow to specify negative
# offsets.
#
gArmTokenSpaceGuid.PcdArmDmaDeviceOffset|0x0|UINT64|0x0000044
[PcdsFixedAtBuild.common, PcdsPatchableInModule.common]
gArmTokenSpaceGuid.PcdFdBaseAddress|0|UINT64|0x0000002B
gArmTokenSpaceGuid.PcdFvBaseAddress|0|UINT64|0x0000002D
[PcdsFixedAtBuild.ARM]
#
# ARM Security Extension
#
# Secure Configuration Register
# - BIT0 : NS - Non Secure bit
# - BIT1 : IRQ Handler
# - BIT2 : FIQ Handler
# - BIT3 : EA - External Abort
# - BIT4 : FW - F bit writable
# - BIT5 : AW - A bit writable
# - BIT6 : nET - Not Early Termination
# - BIT7 : SCD - Secure Monitor Call Disable
# - BIT8 : HCE - Hyp Call enable
# - BIT9 : SIF - Secure Instruction Fetch
# 0x31 = NS | EA | FW
gArmTokenSpaceGuid.PcdArmScr|0x31|UINT32|0x00000038
# By default we do not do a transition to non-secure mode
gArmTokenSpaceGuid.PcdArmNonSecModeTransition|0x0|UINT32|0x0000003E
# The Linux ATAGs are expected to be under 0x4000 (16KB) from the beginning of the System Memory
gArmTokenSpaceGuid.PcdArmLinuxAtagMaxOffset|0x4000|UINT32|0x00000020
# If the fixed FDT address is not available, then it should be loaded below the kernel.
# The recommendation from the Linux kernel is to have the FDT below 16KB.
# (see the kernel doc: Documentation/arm/Booting)
gArmTokenSpaceGuid.PcdArmLinuxFdtMaxOffset|0x4000|UINT32|0x00000023
# The FDT blob must be loaded at a 64bit aligned address.
gArmTokenSpaceGuid.PcdArmLinuxFdtAlignment|0x8|UINT32|0x00000026
# Non Secure Access Control Register
# - BIT15 : NSASEDIS - Disable Non-secure Advanced SIMD functionality
# - BIT14 : NSD32DIS - Disable Non-secure use of D16-D31
# - BIT11 : cp11 - Non-secure access to coprocessor 11 enable
# - BIT10 : cp10 - Non-secure access to coprocessor 10 enable
# 0xC00 = cp10 | cp11
gArmTokenSpaceGuid.PcdArmNsacr|0xC00|UINT32|0x00000039
[PcdsFixedAtBuild.AARCH64]
#
# AArch64 Security Extension
#
# Secure Configuration Register
# - BIT0 : NS - Non Secure bit
# - BIT1 : IRQ Handler
# - BIT2 : FIQ Handler
# - BIT3 : EA - External Abort
# - BIT4 : FW - F bit writable
# - BIT5 : AW - A bit writable
# - BIT6 : nET - Not Early Termination
# - BIT7 : SCD - Secure Monitor Call Disable
# - BIT8 : HCE - Hyp Call enable
# - BIT9 : SIF - Secure Instruction Fetch
# - BIT10: RW - Register width control for lower exception levels
# - BIT11: SIF - Enables Secure EL1 access to EL1 Architectural Timer
# - BIT12: TWI - Trap WFI
# - BIT13: TWE - Trap WFE
# 0x501 = NS | HCE | RW
gArmTokenSpaceGuid.PcdArmScr|0x501|UINT32|0x00000038
# By default we do transition to EL2 non-secure mode with Stack for EL2.
# Mode Description Bits
# NS EL2 SP2 all interrupts disabled = 0x3c9
# NS EL1 SP1 all interrupts disabled = 0x3c5
# Other modes include using SP0 or switching to Aarch32, but these are
# not currently supported.
gArmTokenSpaceGuid.PcdArmNonSecModeTransition|0x3c9|UINT32|0x0000003E
# If the fixed FDT address is not available, then it should be loaded above the kernel.
# The recommendation from the AArch64 Linux kernel is to have the FDT below 512MB.
# (see the kernel doc: Documentation/arm64/booting.txt)
gArmTokenSpaceGuid.PcdArmLinuxFdtMaxOffset|0x20000000|UINT32|0x00000023
# The FDT blob must be loaded at a 2MB aligned address.
gArmTokenSpaceGuid.PcdArmLinuxFdtAlignment|0x00200000|UINT32|0x00000026
#
# These PCDs are also defined as 'PcdsDynamic' or 'PcdsPatchableInModule' to be
# redefined when using UEFI in a context of virtual machine.
#
[PcdsFixedAtBuild.common, PcdsDynamic.common, PcdsPatchableInModule.common]
# System Memory (DRAM): These PCDs define the region of in-built system memory
# Some platforms can get DRAM extensions, these additional regions may be
# declared to UEFI using separate resource descriptor HOBs
gArmTokenSpaceGuid.PcdSystemMemoryBase|0|UINT64|0x00000029
gArmTokenSpaceGuid.PcdSystemMemorySize|0|UINT64|0x0000002A
[PcdsFixedAtBuild.common, PcdsDynamic.common]
#
# ARM Architectural Timer
#
gArmTokenSpaceGuid.PcdArmArchTimerFreqInHz|0|UINT32|0x00000034
# ARM Architectural Timer Interrupt(GIC PPI) numbers
gArmTokenSpaceGuid.PcdArmArchTimerSecIntrNum|29|UINT32|0x00000035
gArmTokenSpaceGuid.PcdArmArchTimerIntrNum|30|UINT32|0x00000036
gArmTokenSpaceGuid.PcdArmArchTimerHypIntrNum|26|UINT32|0x00000040
gArmTokenSpaceGuid.PcdArmArchTimerVirtIntrNum|27|UINT32|0x00000041
#
# ARM Generic Watchdog
#
gArmTokenSpaceGuid.PcdGenericWatchdogControlBase|0x2A440000|UINT64|0x00000007
gArmTokenSpaceGuid.PcdGenericWatchdogRefreshBase|0x2A450000|UINT64|0x00000008
gArmTokenSpaceGuid.PcdGenericWatchdogEl2IntrNum|93|UINT32|0x00000009
#
# ARM Generic Interrupt Controller
#
gArmTokenSpaceGuid.PcdGicDistributorBase|0|UINT64|0x0000000C
# Base address for the GIC Redistributor region that contains the boot CPU
gArmTokenSpaceGuid.PcdGicRedistributorsBase|0|UINT64|0x0000000E
gArmTokenSpaceGuid.PcdGicInterruptInterfaceBase|0|UINT64|0x0000000D
gArmTokenSpaceGuid.PcdGicSgiIntId|0|UINT32|0x00000025
#
# Bases, sizes and translation offsets of IO and MMIO spaces, respectively.
# Note that "IO" is just another MMIO range that simulates IO space; there
# are no special instructions to access it.
#
# The base addresses PcdPciIoBase, PcdPciMmio32Base and PcdPciMmio64Base are
# specific to their containing address spaces. In order to get the physical
# address for the CPU, for a given access, the respective translation value
# has to be added.
#
# The translations always have to be initialized like this, using UINT64:
#
# UINT64 IoCpuBase; // mapping target in 64-bit cpu-physical space
# UINT64 Mmio32CpuBase; // mapping target in 64-bit cpu-physical space
# UINT64 Mmio64CpuBase; // mapping target in 64-bit cpu-physical space
#
# PcdPciIoTranslation = IoCpuBase - PcdPciIoBase;
# PcdPciMmio32Translation = Mmio32CpuBase - (UINT64)PcdPciMmio32Base;
# PcdPciMmio64Translation = Mmio64CpuBase - PcdPciMmio64Base;
#
# because (a) the target address space (ie. the cpu-physical space) is
# 64-bit, and (b) the translation values are meant as offsets for *modular*
# arithmetic.
#
# Accordingly, the translation itself needs to be implemented as:
#
# UINT64 UntranslatedIoAddress; // input parameter
# UINT32 UntranslatedMmio32Address; // input parameter
# UINT64 UntranslatedMmio64Address; // input parameter
#
# UINT64 TranslatedIoAddress; // output parameter
# UINT64 TranslatedMmio32Address; // output parameter
# UINT64 TranslatedMmio64Address; // output parameter
#
# TranslatedIoAddress = UntranslatedIoAddress +
# PcdPciIoTranslation;
# TranslatedMmio32Address = (UINT64)UntranslatedMmio32Address +
# PcdPciMmio32Translation;
# TranslatedMmio64Address = UntranslatedMmio64Address +
# PcdPciMmio64Translation;
#
# The modular arithmetic performed in UINT64 ensures that the translation
# works correctly regardless of the relation between IoCpuBase and
# PcdPciIoBase, Mmio32CpuBase and PcdPciMmio32Base, and Mmio64CpuBase and
# PcdPciMmio64Base.
#
gArmTokenSpaceGuid.PcdPciIoBase|0x0|UINT64|0x00000050
gArmTokenSpaceGuid.PcdPciIoSize|0x0|UINT64|0x00000051
gArmTokenSpaceGuid.PcdPciIoTranslation|0x0|UINT64|0x00000052
gArmTokenSpaceGuid.PcdPciMmio32Base|0x0|UINT32|0x00000053
gArmTokenSpaceGuid.PcdPciMmio32Size|0x0|UINT32|0x00000054
gArmTokenSpaceGuid.PcdPciMmio32Translation|0x0|UINT64|0x00000055
gArmTokenSpaceGuid.PcdPciMmio64Base|0x0|UINT64|0x00000056
gArmTokenSpaceGuid.PcdPciMmio64Size|0x0|UINT64|0x00000057
gArmTokenSpaceGuid.PcdPciMmio64Translation|0x0|UINT64|0x00000058
#
# Inclusive range of allowed PCI buses.
#
gArmTokenSpaceGuid.PcdPciBusMin|0x0|UINT32|0x00000059
gArmTokenSpaceGuid.PcdPciBusMax|0x0|UINT32|0x0000005A
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