Embedded Trace Macrocell Architecture Specification: 3.8.4. Guidelines for the ETM trace registers to be saved and restored

3.8.4. Guidelines for the ETM trace registers to be saved and restored

It is implementation defined which registers are included in the save and restore mechanism. However, the mechanism must include all registers whose contents are lost in a power-down. Table 3.95 gives a list of the ETM registers typically included in the save and restore mechanism.

Table 3.95. Typical list of ETM registers to be saved and restored

Register number	Register offset	Register name
`0x000`	`0x000`	Main Control
`0x002`	`0x008`	Trigger Event
`0x003`	`0x00C`	ASIC Control
`0x004`	`0x010`	Status
`0x006`	`0x018`	TraceEnable Start/Stop
`0x007`	`0x01C`	TraceEnable Control 2
`0x008`	`0x020`	TraceEnable Event
`0x009`	`0x024`	TraceEnable Control 1
`0x00A`	`0x028`	FIFOFULL Region
`0x00B`	`0x02C`	FIFOFULL Level
`0x00C`	`0x030`	ViewData Event
`0x00D`	`0x034`	ViewData Control 1
`0x00E`	`0x038`	ViewData Control 2
`0x00F`	`0x03C`	ViewData Control 3
`0x010`-`0x01F`	`0x040`-`0x07C`	Address Comparator Value 1-16
`0x020`-`0x02F`	`0x080`-`0x0BC`	Address Comparator Access Type 1-16
`0x030`-`0x03F`	`0x0C0`-`0x0FC`	Data Comparator Value 1-16
`0x040`-`0x04F`	`0x100`-`0x13C`	Data Comparator Mask 1-16
`0x050`-`0x053`	`0x140`-`0x14C`	Counter Reload Value 1-4
`0x054`-`0x057`	`0x150`-`0x15C`	Counter Enable 1-4
`0x058`-`0x05B`	`0x160`-`0x16C`	Counter Reload Event 1-4
`0x05C`-`0x05F`	`0x170`-`0x17C`	Counter Value 1-4
`0x060`-`0x065`	`0x180`-`0x194`	Sequencer Control
`0x067`	`0x19C`	Sequencer State
`0x068`-`0x06B`	`0x1A0`-`0x1AC`	External Output Event 1-4
`0x06C`-`0x06E`	`0x1B0`-`0x1B8`	Context ID Comparator Value 1-3
`0x06F`	`0x1BC`	Context ID Comparator Mask
`0x078`	`0x1E0`	Synchronization Frequency
`0x07B`	`0x1EC`	Extended External Input Selection
`0x07C`	`0x1F0`	TraceEnable Start/Stop EmbeddedICE Control
`0x07D`	`0x1F4`	EmbeddedICE Behavior Control
`0x07E`	`0x1F8`	Timestamp Event
`0x07F`	`0x1FC`	Auxiliary Control
`0x080`	`0x200`	CoreSight Trace ID
`0x3E8`	`0xFA0`	Claim Tag Set, ETMv3.5
`0x3E9`	`0xFA4`	Claim Tag Clear, ETMv3.5

Copyright © 1999-2002, 2004-2009, 2011 ARM Limited. All rights reserved.	ARM IHI 0014Q
Non-Confidential	ID101211
PDF version