autofix实践

1.read_gate_and_protocol

remove_design -designs

read_ddc mapped/RISC_CORE.ddc
current_design RISC_CORE
link

#Declare test components in preparation for create_test_protocol
set_dft_signal -view existing_dft -port Clk -type ScanClock -timing {45 55}
set_dft_signal -view existing_dft -port Reset -type Reset -active_state 0
set_dft_signal -view spec -port TEST_SE -type ScanEnable -active_state 1
set_dft_signal -view existing_dft -type Constant -active_state 1 -port TEST_MODE

create_test_protocol

dft_drc

2.preview_dft

# Get the scan insertion settings
#source -e -v scripts/settings_insert_dft.tcl
set_dft_signal -view spec -port Instrn[0] -type ScanDataIn
set_dft_signal -view spec -port Xecutng_Instrn[0] -type ScanDataOut
set_scan_configuration -chain_count 1

# Allow clock domains to be mixed together on same chain
set_scan_configuration -clock_mixing mix_clocks
# Specify the autofix configuration
source -e -v scripts/autofix.tcl

# Preview the scan architecture / test points
preview_dft; 

#***********START AUTOFIX COMMANDS*******************************************************

# Use autofix to fix problems with sets/resets and clock problems

# Enable AutoFix
set_dft_configuration -fix_set enable -fix_reset enable -fix_clock enable
set_dft_signal -view spec -type TestMode -active_state 1 -port TEST_MODE

# Fix clocks
# If an autofix clock is not specified, tool will look for a controllable clock
# DFTC will create a new clock port if it does not find one
# Using the clock Clk as the autofix clock
set_dft_signal -view spec -port Clk -type TestData
set_autofix_configuration -type clock -control TEST_MODE -test_data Clk

# Fix resets
# Use the Reset line as the reset fix
set_dft_signal -view spec -port Reset -type TestData
set_autofix_configuration -type reset -method mux -control TEST_MODE -test_data Reset

# Fix sets
# Use the same Reset line to fix the sets
set_autofix_configuration -type set -method mux -control TEST_MODE -test_data Reset


# TEST_MODE already declared as part of the test protocol

#***********END AUTOFIX COMMANDS*********************************************************

3.insert_dft

insert_dft
dft_drc -coverage_estimate