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First Day
Overview of Cortex-A73
- Cortex-A73 architecture
- Intra-cluster cache coherency
- Inter-cluster cache coherency through AXI4 ACE
- ACP port
- Programmer’s model
Introduction to ARM Architecture V8
- Enhancement with regard to AArchv7
- Register mapping between A32/T32 and A64
- Mapping of AArch64 System registers to the AArch32 System registers
ARMv8 Exceptions
- Four exception levels
- Exception Link Registers
- Register banking by exception level based on a new exception model
- Nesting on the same exception level
- Exception type and exception origin
- Syndrome registers used to provide a status information to the exception handler
- Exception return instruction
The ARMV8-A Security Model
- Security model when EL3 is using AArch64
- Trapping to EL3 using AArch64
Interprocessing
- Managing two types of processes: 64-bit and 32-bit, switching on an exception
- Non secure space organization
Second Day
Virtualization
- New hypervisor privilege level on non-secure side
- Re-entrant mode
- Hypervisor exception management, trapping
- Asynchronous exception routing and control
Instruction Pipeline
- Superscalar operation
- Predicted and non-predicted instructions
- Branch accelerators
- Invalidation and context switches
- Highlighting differences with Cortex-A57
Multicore
- Synchronization and semaphores
- Shareability memory attributes
- Operation of the global monitor
- Load acquire / Store release instruction pair
- Use of WFE and SEV instructions by spin-locks
- CLREXMON request and acknowledge signaling
Memory Accesses
- Mixed-endian support
- Program counter and stack pointer alignment
- Ordering requirements
- Page attributes : Normal or Device
- Shareability and access limitations on the data barrier operations
- Memory barriers
ARMv8 MMU Support
- LPAE enhancements to adapt to AArch64
- Supporting up to 48 bits of VA per TTBR
- Access permission checking
- Supporting up to 48 bits of IPA and PA spaces
- VMSAv8-64 address translation system
- Memory translation granule size
- Descriptor page table organization, descriptor format
- Hierarchical control of Secure or Non-secure memory accesses
- TLB preload instructions
- TLB maintenance instructions in A64
- Cortex-A73 TLB implementation
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Third Day
Caches
- Cache hierarchy, Point of Unification, Point of Coherency
- Load non temporal instruction
- Instruction and Data cache maintenance instructions in A64
- Cortex-A73 L1 and L2 memory system
- L2 hardware cache flush
- L2 replacement algorithm selection
A64 New Instruction Set
- A64 assembly language, regular bit encoding structure
- Instruction aliases
- Branches, function call and return
- Conditional select instructions, avoiding branches
- Load Store instructions, addressing modes
- Arithmetic and logical instructions, CRC calculation instructions
- Instructions for accessing AArch32 Execution environment registers
ARM Architecture Procedure Call Standard 64-bit
- General register usage convention
- Stack pointer and frame pointer
- NEON / VFP register usage convention
NEON, VFP and Cryptographic Units
- New register banking for NEON and VFP
- Mapping of the SIMD and floating-point registers between the Execution states
- Vector formats in AArch64 state
- New SIMD instructions
- Cryptography software support through a new family of instructions
GICv4
- Generic Interrupt Controller CPU interface registers
- Interrupt virtualization
- Interrupt handling to support nesting
Fourth Day
Generic Timer
- System counter clock frequency
- Physical and virtual timer count registers
- Physical up-count comparison, down-count value and timer control registers
- Virtual up-count comparison, down-count value and timer control registers
Low Power States
- Wait for Interrupt and Wait for Event
- Cortex-A73 low power modes
- L2 Wait for Interrupt
- Processor dynamic retention
- Support for power management with multiple power domains
- Dormant mode
- Processor dynamic retention
- L2 RAMs dynamic retention
- Core Q-channel interface
ARMv8 Debug
- Self-hosted debug
- Debug state instructions
- Linked comparisons for Breakpoint/Watchpoint exception generation
- Software Step exceptions
- Routing debug exceptions
- External debug, cross-triggering
- Embedded Trace Macrocell architecture
Performance Monitor
- Per-function performance monitoring at EL0 level
- Effect of EL3 and EL2 on Performance Monitor
- Event filtering
Cortex-A73 Hardware Implementation
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