[ Shell ] 通過 Shell 指令碼匯出 CDL 網表

YEUNGCHIE發表於2022-04-04
指令碼

https://www.cnblogs.com/yeungchie/

通過 si 匯出電路網表，實際上在 Virtuoso 中通過選單 File - Export - CDL 和 Calibre LVS 中 Export from schematic viewer 也是通過 si 來匯出電路網表的，下面講下如何使用。

如何執行 si

下面是 si 的執行命令， $cdslibFile 為 cds.lib 檔案。

si -batch -command netlist -cdslib $cdslibFile

si.env 檔案

在 si 的執行路徑下需要提前準備好一個 si.env 檔案，si 通過讀取這個檔案的內容來配置匯出 cdl 所需要的資訊。

檔案的如何編寫可以參考 help 文件：

  • Virtuoso Shared Tools
    • Design Data Translators Reference
      • Design Translation Using CDL Out
        • Using CDL Out
          • Preparing the si.env File

簡單看看就行，我一般是直接通過 GUI 介面嘗試匯出一份 cdl，然後在執行路徑下會有一份 si.env 檔案，下面是一個例子：

simLibName = "stdcel"
simCellName = "TOP"
simViewName = "schematic"
simSimulator = "auCdl"
simNotIncremental = 't
simReNetlistAll = nil
simViewList = '("auCdl" "cdl" "schematic" "cmos_sch" "gate_sch" "cmos.sch" "gate.sch" "symbol")
simStopList = '("auCdl" "cdl")
hnlNetlistFileName = "TOP.cdl"
resistorModel = ""
shortRES = 2000.0
preserveRES = 't
checkRESVAL = 't
checkRESSIZE = 'nil
preserveCAP = 't
checkCAPVAL = 't
checkCAPAREA = 'nil
preserveDIO = 't
checkDIOAREA = 't
checkDIOPERI = 't
checkCAPPERI = 'nil
simPrintInhConnAttributes = 'nil
checkScale = "meter"
checkLDD = 'nil
pinMAP = 'nil
preserveBangInNetlist = 'nil
shrinkFACTOR = 0.0
globalPowerSig = ""
globalGndSig = ""
displayPININFO = 't
preserveALL = 't
setEQUIV = ""
incFILE = "./Subcircuit/3t_device.cdl"
auCdlDefNetlistProc = "ansCdlHnlPrintInst"

這個例子中匯出的頂層電路單元是 stdcel/TOP/schematic，我們只關心其中幾個常用的變數：

  • simLibName ( Library Name ) stdcel
  • simCellName ( Top Cell Name ) TOP
  • simViewName ( View Name ) schematic
  • hnlNetlistFileName ( Output CDL Netlist File )
  • incFILE ( Include File )
  • auCdlDefNetlistProc ( Analog Netlisting Type ) 這個變數決定 pin 的連線方式
    • ansCdlSubcktCall ( Connection By Order ) 順序連線
    • ansCdlHnlPrintInst ( Connection By Name ) 命名埠連線，一般選擇這個來保證 IP/Digital 網表的連線

Run Directory 直接由 si 的執行路徑來決定。

編寫指令碼 export_cdl

明白了 si 的使用方法，現在可以寫一個 shell 指令碼，在 Terminal 操作，實現便捷地匯出指定電路單元的 cdl 檔案。

點選檢視完整程式碼 
#!/bin/bash
#--------------------------
# Program  : export_cdl.sh
# Language : Bash
# Author   : YEUNGCHIE
# Version  : 2022.04.03
#--------------------------
HelpInfo(){
    cat <<EOF
-------------------------------------------------
Export CDL ( Circuit Description Language ) File
-------------------------------------------------
Usage: export_cdl -cdslib cdslibFile -lib libName -cell cellName [ OPTIONS ]

    -cdslib     Path of cds.lib file
    -lib        Schematic top cell libName
    -cell       Schematic top cell cellName
    -view       Schematic top cell viewName ( Default: schematic )
    -file       Output netlist file name    ( Default: ./<cellName>.cdl )
    -include    Include subckt file name
    -order      Netlisting Type Connection By Order ( The default is By Name )
    -h, --help  Display this help

Examples:   export_cdl  -cdslib ./cds.lib  -lib Xeon  -cell X999  -include ./subckt.cdl

Output:     Netlist file: X999.cdl
EOF
}

viewName='schematic'
connType='ansCdlHnlPrintInst'

# 命令列引數分析
while [[ -n $1 ]]; do
    if [[ -n $opt ]]; then
        case $opt in
            lib_opt)        libName=$1      ;;
            cell_opt)       cellName=$1     ;;
            view_opt)       viewName=$1     ;;
            file_opt)       netlistFile=$1  ;;
            cdslib_opt)     cdslibFile=$1   ;;
            include_opt)    includeFile=$1  ;;
        esac
        unset opt
    else
        case $1 in
            -lib)       opt='lib_opt'       ;;
            -cell)      opt='cell_opt'      ;;
            -view)      opt='view_opt'      ;;
            -file)      opt='file_opt'      ;;
            -cdslib)    opt='cdslib_opt'    ;;
            -include)   opt='include_opt'   ;;
            -order)
                connType='ansCdlSubcktCall'
            ;;
            -h|--help)
                HelpDoc >&2
                exit 1
            ;;
            *)
                echo "Invalid option - '$1'" >&2
                echo "Try -h or --help for more infomation." >&2
                exit 1
            ;;
        esac
    fi
    shift
done

# 引數檢查
if [[ ! ( $cdslibFile && $libName && $cellName ) ]]; then
    ## 缺少必要引數時，列印 help 並退出
    HelpInfo >&2
    exit 1
elif [[ -f $cdslibFile ]]; then
    ## 將相對路徑改為絕對路徑
    cdslibDir=$(cd $(dirname $cdslibFile); pwd -P)
    fileName=$(basename $cdslibFile)
    cdslibFile="$cdslibDir/$fileName"
else
    ## 找不到 cds.lib 檔案，列印報錯
    echo "No such file - $cdslibFile" >&2
    echo "Try -h or --help for more infomation." >&2
    exit 1
fi

## 當網表檔名未定義時，設定預設檔名
if [[ ! $netlistFile ]]; then netlistFile="${cellName}.cdl" ; fi

# si.env 檔案生成
cat > si.env <<EOF
simLibName = "$libName"
simCellName = "$cellName"
simViewName = "$viewName"
simSimulator = "auCdl"
simNotIncremental = 't
simReNetlistAll = nil
simViewList = '("auCdl" "cdl" "schematic" "cmos_sch" "gate_sch" "cmos.sch" "gate.sch" "symbol")
simStopList = '("auCdl" "cdl")
simNetlistHier = t
hnlNetlistFileName = "$netlistFile"
resistorModel = ""
shortRES = 2000.0
preserveRES = 't
checkRESVAL = 't
checkRESSIZE = 'nil
preserveCAP = 't
checkCAPVAL = 't
checkCAPAREA = 'nil
preserveDIO = 't
checkDIOAREA = 't
checkDIOPERI = 't
checkCAPPERI = 'nil
simPrintInhConnAttributes = 'nil
checkScale = "meter"
checkLDD = 'nil
pinMAP = 'nil
preserveBangInNetlist = 'nil
shrinkFACTOR = 0.0
globalPowerSig = ""
globalGndSig = ""
displayPININFO = 't
preserveALL = 't
setEQUIV = ""
incFILE = ""
auCdlDefNetlistProc = "$connType"
EOF

# 執行 si
si -batch -command netlist -cdslib $cdslibFile

status=$?

# 刪除中間檔案
if [[ -f .stimulusFile.auCdl ]]; then rm -rf .stimulusFile.auCdl ; fi
if [[ -f si.env              ]]; then rm -rf si.env              ; fi
if [[ -f netlist             ]]; then rm -rf netlist             ; fi
if [[ -d ihnl                ]]; then rm -rf ihnl                ; fi
if [[ -d map                 ]]; then rm -rf map                 ; fi

exit $status

執行例項

例：cdslib 檔案為 ./cds.lib

  1. 匯出 verify 庫中的 ad01d0 單元的電路網表。

    export_cdl -cdslib cds.lib -lib verify -cell ad01d0

    匯出的 cdl 檔名為 ad01d0.cdl

  2. 匯出 verify 庫中的 inv0d0 單元的電路網表，同時包含 subckt 網表檔案 ./netlist，並指定 cdl 檔名為 inv.cdl 。

    export_cdl -cdslib ./cds.lib -lib verify -cell inv0d0 -include ./netlist

    匯出的 cdl 檔名為 inv.cdl

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