Download SOC Consortium Course Material ARM debug Arch.

JTAG and Multi-ICE
National Taiwan University
Adopted from National
Taiwan University
SOC Course Material
SOC Consortium Course Material
Outline
ARM debug Architecture
Content of JTAG
Multi-ICE Arch.
SOC Consortium Course Material
2
ARM debug Arch.(I)
AXD can debug design through:
– ARMulator (software)
– Multi-ICE (hardware)
– Angel (hardware)
SOC Consortium Course Material
3
ARM debug Arch.(II)
ARMulator
– Processor core model
• Handles all communication with the debugger
– Memory interface
• Transfers data between the ARM model and the memory model
– Coprocessor interface
• Can be used to simulate attached ARM-style coprocessors (such as
floating point accelerators or custom DSPs)
– Operating system interface
• It is called whenever the ARM executes a SWI instruction, so you can
simulate the operating system in C without having to write any ARM
code.
SOC Consortium Course Material
4
ARM debug Arch.(III)
Multi-ICE
–
–
–
–
The solution for ARMulator limits
Can emulate custom logic
Use hardware to emulate truly results
Extended from JTAG Architecture
SOC Consortium Course Material
5
Outline
ARM debug Architecture
Content of JTAG
Multi-ICE Arch.
SOC Consortium Course Material
6
JTAG Arch.
Serial scan path from
one cell to another
SOC Consortium Course Material
7
JTAG principle(I)
In enable
I/O
in
Core logic
enable
out
Device ID reg
TDI
TMS
TDO
Bypass reg
Instruction reg
TCK
TAP controller
TRST
SOC Consortium Course Material
8
JTAG Principle(II)
JTAG Signals
–
–
–
–
–
TRST
Test reset signal
TDI Test data in
TMS Test mode select
TCK Test clock
TDO Test data out
SOC Consortium Course Material
9
Outline
ARM debug Architecture
Content of JTAG
Multi-ICE Arch.
SOC Consortium Course Material
10
Multi-ICE(I)
SOC Consortium Course Material
11
Multi-ICE(II)
 Debugging software can be
run on different computer
through Network.
SOC Consortium Course Material
12
The portmap application
To support network connections, an additional
application must be running on the windows
workstation that runs the The multi-ICE server.
the portmapper
allows software on
other computers on
the network to
locate the multi-ICE
server.
SOC Consortium Course Material
13
Reference Topic & Related Documents
 Multi-ICE [DUI_0048F_MICE2_2_UG]
 AXD and armsd Debuggers Guide
[DUI_0066D_AXDDG_2_UG ]
 Getting Started Guide [DUI_0064D_GSG_UG ]
SOC Consortium Course Material
14
Experiment Requirements (1/3)
Write an ID checking engine and a front–end interface.
Requirements:
– The front-end interface can accept up to 64 entries of ID in each
round.
– The program runs continuously round by round.
User input:
– The amount of ID to be checked.
– The ID numbers.
Program output:
– The ID number.
– Check result.
SOC Consortium Course Material
15
Experiment Requirements (2/3)
Example:
(start of round)
How many IDs to check: 2
Enter ID #1: A123456789
Enter ID #2: B987654321
=== check result ===
A123456789 valid
B987654321 invalid
(end of round)
SOC Consortium Course Material
16
Experiment Requirements (3/3)
ID Checking Rules:
ID number comes in a 10-digit set. The ID starts with an
alphabet, followed by 9 digits of numeral.
Checking the first numeral, it should be either “1” or “2”.
Setting some constrains to select valid IDs.
Recording the total memory and cycle requirements.
Constructing a profile to analysis the time percentage of
each function in your code.
SOC Consortium Course Material
17