RK3566 debug component clarification.
#1
So I've been debugging various things on my RK3566 based soquartz and standard debugging is becoming insufficient for my needs. Hardware tracing would be really nice to have and there is Coresight ETM support in Linux.

However before I spend lots of time trying to get it working can someone clarify for me if RK3566 actually has a functioning Coresight ETM component? If yes, is it version ETMv4 and what subcomponents it has(trace funnel? anything else)?

The RK3568 (that is supposedly very similar to rk3566) TRM document claims rk3568 has DAP-Lite2 debug component which is described on ARM;s website as "a simple debug component with no tracing capability."

So if there is no tracing capability why does the ROM table contain tracing components for each CPU? (listing below)

Code:
AP # 0x0
        AP ID register 0x24770002
        Type is MEM-AP APB2 or APB3
MEM-AP BASE 0x80000003
        Valid ROM table present
        Component base address 0x80000000
        Peripheral ID 0x0000080000
        Designer is 0x000, <invalid>
        Part is 0x000, Unrecognized
        Component class is 0x1, ROM table
        MEMTYPE system memory not present: dedicated debug bus
    ROMTABLE[0x0] = 0x01000003
        Component base address 0x81000000
        Peripheral ID 0x04007bb4e3
        Designer is 0x23b, ARM Ltd
        Part is 0x4e3, Unrecognized
        Component class is 0x9, CoreSight component
        Type is 0x00, Miscellaneous, other
        Dev Arch is 0x47700af7, ARM Ltd "CoreSight ROM architecture" rev.0
        Type is ROM table
        MEMTYPE system memory not present: dedicated debug bus
    [L01] ROMTABLE[0x0] = 0x00001006
        Component not present
    [L01] ROMTABLE[0x4] = 0x00002006
        Component not present
    [L01] ROMTABLE[0x8] = 0x00004003
        Component base address 0x81004000
        Peripheral ID 0x04003bbd05
        Designer is 0x23b, ARM Ltd
        Part is 0xd05, Unrecognized
        Component class is 0x9, CoreSight component
        Type is 0x15, Debug Logic, Processor
        Dev Arch is 0x47708a15, ARM Ltd "Processor debug architecture (v8.2-A)" rev.0
    [L01] ROMTABLE[0xc] = 0x00005003
        Component base address 0x81005000
        Peripheral ID 0x04003bbd05
        Designer is 0x23b, ARM Ltd
        Part is 0xd05, Unrecognized
        Component class is 0x9, CoreSight component
        Type is 0x15, Debug Logic, Processor
        Dev Arch is 0x47708a15, ARM Ltd "Processor debug architecture (v8.2-A)" rev.0
    [L01] ROMTABLE[0x10] = 0x00006003
        Component base address 0x81006000
        Peripheral ID 0x04003bbd05
        Designer is 0x23b, ARM Ltd
        Part is 0xd05, Unrecognized
        Component class is 0x9, CoreSight component
        Type is 0x15, Debug Logic, Processor
        Dev Arch is 0x47708a15, ARM Ltd "Processor debug architecture (v8.2-A)" rev.0
    [L01] ROMTABLE[0x14] = 0x00007003
        Component base address 0x81007000
        Peripheral ID 0x04003bbd05
        Designer is 0x23b, ARM Ltd
        Part is 0xd05, Unrecognized
        Component class is 0x9, CoreSight component
        Type is 0x15, Debug Logic, Processor
        Dev Arch is 0x47708a15, ARM Ltd "Processor debug architecture (v8.2-A)" rev.0
    [L01] ROMTABLE[0x18] = 0x00008002
        Component not present
    [L01] ROMTABLE[0x1c] = 0x00009002
        Component not present
    [L01] ROMTABLE[0x20] = 0x0000a002
        Component not present
    [L01] ROMTABLE[0x24] = 0x0000b002
        Component not present
    [L01] ROMTABLE[0x28] = 0x0000c003
        Component base address 0x8100c000
        Peripheral ID 0x04003bbd05
        Designer is 0x23b, ARM Ltd
        Part is 0xd05, Unrecognized
        Component class is 0x9, CoreSight component
        Type is 0x16, Performance Monitor, Processor
        Dev Arch is 0x47702a16, ARM Ltd "Processor Performance Monitor (PMU) architecture" rev.0
    [L01] ROMTABLE[0x2c] = 0x0000d003
        Component base address 0x8100d000
        Peripheral ID 0x04003bbd05
        Designer is 0x23b, ARM Ltd
        Part is 0xd05, Unrecognized
        Component class is 0x9, CoreSight component
        Type is 0x16, Performance Monitor, Processor
        Dev Arch is 0x47702a16, ARM Ltd "Processor Performance Monitor (PMU) architecture" rev.0
    [L01] ROMTABLE[0x30] = 0x0000e003
        Component base address 0x8100e000
        Peripheral ID 0x04003bbd05
        Designer is 0x23b, ARM Ltd
        Part is 0xd05, Unrecognized
        Component class is 0x9, CoreSight component
        Type is 0x16, Performance Monitor, Processor
        Dev Arch is 0x47702a16, ARM Ltd "Processor Performance Monitor (PMU) architecture" rev.0
    [L01] ROMTABLE[0x34] = 0x0000f003
        Component base address 0x8100f000
        Peripheral ID 0x04003bbd05
        Designer is 0x23b, ARM Ltd
        Part is 0xd05, Unrecognized
        Component class is 0x9, CoreSight component
        Type is 0x16, Performance Monitor, Processor
        Dev Arch is 0x47702a16, ARM Ltd "Processor Performance Monitor (PMU) architecture" rev.0
    [L01] ROMTABLE[0x38] = 0x00014003
        Component base address 0x81014000
        Peripheral ID 0x04007bbd05
        Designer is 0x23b, ARM Ltd
        Part is 0xd05, Unrecognized
        Component class is 0x9, CoreSight component
        Type is 0x14, Debug Control, Trigger Matrix
        Dev Arch is 0x47701a14, ARM Ltd "Cross Trigger Interface (CTI) architecture" rev.0
    [L01] ROMTABLE[0x3c] = 0x00015003
        Component base address 0x81015000
        Peripheral ID 0x04007bbd05
        Designer is 0x23b, ARM Ltd
        Part is 0xd05, Unrecognized
        Component class is 0x9, CoreSight component
        Type is 0x14, Debug Control, Trigger Matrix
        Dev Arch is 0x47701a14, ARM Ltd "Cross Trigger Interface (CTI) architecture" rev.0
    [L01] ROMTABLE[0x40] = 0x00016003
        Component base address 0x81016000
        Peripheral ID 0x04007bbd05
        Designer is 0x23b, ARM Ltd
        Part is 0xd05, Unrecognized
        Component class is 0x9, CoreSight component
        Type is 0x14, Debug Control, Trigger Matrix
        Dev Arch is 0x47701a14, ARM Ltd "Cross Trigger Interface (CTI) architecture" rev.0
    [L01] ROMTABLE[0x44] = 0x00017003
        Component base address 0x81017000
        Peripheral ID 0x04007bbd05
        Designer is 0x23b, ARM Ltd
        Part is 0xd05, Unrecognized
        Component class is 0x9, CoreSight component
        Type is 0x14, Debug Control, Trigger Matrix
        Dev Arch is 0x47701a14, ARM Ltd "Cross Trigger Interface (CTI) architecture" rev.0
    [L01] ROMTABLE[0x48] = 0x0001c003
        Component base address 0x8101c000
        Peripheral ID 0x04003bbd05
        Designer is 0x23b, ARM Ltd
        Part is 0xd05, Unrecognized
        Component class is 0x9, CoreSight component
        Type is 0x13, Trace Source, Processor
        Dev Arch is 0x47724a13, ARM Ltd "Embedded Trace Macrocell (ETM) architecture" rev.2
    [L01] ROMTABLE[0x4c] = 0x0001d003
        Component base address 0x8101d000
        Peripheral ID 0x04003bbd05
        Designer is 0x23b, ARM Ltd
        Part is 0xd05, Unrecognized
        Component class is 0x9, CoreSight component
        Type is 0x13, Trace Source, Processor
        Dev Arch is 0x47724a13, ARM Ltd "Embedded Trace Macrocell (ETM) architecture" rev.2
    [L01] ROMTABLE[0x50] = 0x0001e003
        Component base address 0x8101e000
        Peripheral ID 0x04003bbd05
        Designer is 0x23b, ARM Ltd
        Part is 0xd05, Unrecognized
        Component class is 0x9, CoreSight component
        Type is 0x13, Trace Source, Processor
        Dev Arch is 0x47724a13, ARM Ltd "Embedded Trace Macrocell (ETM) architecture" rev.2
    [L01] ROMTABLE[0x54] = 0x0001f003
        Component base address 0x8101f000
        Peripheral ID 0x04003bbd05
        Designer is 0x23b, ARM Ltd
        Part is 0xd05, Unrecognized
        Component class is 0x9, CoreSight component
        Type is 0x13, Trace Source, Processor
        Dev Arch is 0x47724a13, ARM Ltd "Embedded Trace Macrocell (ETM) architecture" rev.2
    [L01] ROMTABLE[0x58] = 0x00000002
        Component not present
    [L01] ROMTABLE[0x5c] = 0x00000002
        Component not present

It is clear we have a CTI, a PMU and an ETM for each core. Can anyone confirm/deny if those can be made to work?

BTW. If anyone is interested how to do hardware level debug on Quartz64 I wrote a quick description here: http://notes.zahoryzontnik.com/
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