FC3 MPC744X/5X implementation

This course covers Freescale G4+ Power CPU, including MPC7448


Objectives
	The course provides coding guidelines based on the knowledge of the instruction pipeline.
	Alignment rules are to be determined to avoid cache replacement of data being processed.
	Data flows between SDRAM, L1 caches , L2 and possibly L3 cache are highlighted.
	MESI cache coherency protocol is introduced in increasing depth.
	Vector instructions and new C operators are viewed in detail.
	Data streams parameterizing is emphasized through an example.
	This course covers bus operation in either 60X or MPX mode.
	Through a FIR algorithm, the instructor shows how to vectorize processing and reduce execution time using data streaming.
	The internal performance monitor has been programmed so that different versions of the FIR algorithm implementation can be compared.
	This course has been delivered several times to companies involved in the design of avionics equipments, such as flight controller.
A more detailed course description is available on request at info@ac6-training.com


Prerequisites
	Experience of a 32 bit processor or DSP is mandatory.

Outline


PIPELINE
	Pipeline basics
	744X/5X pipeline implementation
	Issue queue resource requirements
	Execution model
	Dispatch conditions, completion conditions
	Execution serialization
	Branch management
	Guarded memory
L1, L2 and L3 CACHES
	Cache basics
	744X/5X L1 cache
	Transient load instructions benefits
	L2 cache organization
	L2 replacement algorithm selection, L2 locking
	L3 Cache organization according to L3 size
	L3 replacement algorithm selection, L3 locking
	L3 SSRAM used as private memory
	Cache coherency basics
	The MESI L1 data line states
	MESI snooping sequences involving 2 G4 and a PCI master
INTERNAL DATA FLOWS
	L1 and L2 cache loading, hit under miss
	The MSS [Memory Sub System]
	The load fold queue
	The store miss merging advantage
	Purpose of sync and eieio instructions
MPC744X/5X SPECIFIC UNITS
	The 3 architecture layers introduction : UISA, VEA and OEA
	Low power modes
	Performance monitor
	JTAG debugger
	Real time trace
	Differences between 7441, 7445, 7450, 7451, 7455, 7447, 7457 and 7448
THE UISA LAYER
	Branch instructions
	Integer load / store instructions
	Integer arithmetic and logic instructions
	IEEE754 basics
	Float load / store instructions
	Float arithmetic instructions
	The EABI
THE VEA LAYER
	Cache related instructions
	Little-endian emulation
	PowerPC timers : TB and DEC


ALTIVEC IMPLEMENTATION
	Altivec introduction, SIMD processing
	Intra vs inter element instructions
	Altivec registers
	ANSI C extension to support vector operators
	Vector load / store instructions
	Vector integer instructions
	Vector float instructions
	Vector permut instructions
	Altivec implementation on the 744X/5X
	Data streams management
	EABI extension to support Altivec
THE OEA LAYER - MMU
	MMU goals
	The PowerPC address processing
	Enabling of 4 additional BAT on 7445/55
	32-bit or 36-bit real address size selection
	WIMG attributes definition, page and block access rights definition
	Process protection through VSID selection
	TLB organization
	Page translation
	Software vs hardware TLB reload
	MMU implementation in real-time sensitive applications
THE OEA LAYER – EXCEPTION MECHANISM
	Exception management
	Registers updating related to the exception cause
	Requirements to support exception nesting
MPC744X/5X HARDWARE IMPLEMENTATION
	Bus interface configuration
	Auto-check on power up
	Pinout
	Bus features : address pipelining, split transactions
	60X bus mode : address phase and data phase
	MPX bus mode : HIT and DRDY pins use
	Data only transactions
	MPX bus cycles overview
	Other signals : interrupts, machine check
	Synchronous SRAMs technologies
	L3 bus pinout, L3 clock synchronization
	SSRAM related parameters initialization in L3CR register

Duration	Cost	Calendar
5 days	2100 €