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build_config_pkg.sv
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package build_config_pkg;
function automatic config_pkg::cva6_cfg_t build_config(config_pkg::cva6_user_cfg_t CVA6Cfg);
bit IS_XLEN32 = (CVA6Cfg.XLEN == 32) ? 1'b1 : 1'b0;
bit IS_XLEN64 = (CVA6Cfg.XLEN == 32) ? 1'b0 : 1'b1;
bit FpPresent = CVA6Cfg.RVF | CVA6Cfg.RVD | CVA6Cfg.XF16 | CVA6Cfg.XF16ALT | CVA6Cfg.XF8;
bit NSX = CVA6Cfg.XF16 | CVA6Cfg.XF16ALT | CVA6Cfg.XF8 | CVA6Cfg.XFVec; // Are non-standard extensions present?
int unsigned FLen = CVA6Cfg.RVD ? 64 : // D ext.
CVA6Cfg.RVF ? 32 : // F ext.
CVA6Cfg.XF16 ? 16 : // Xf16 ext.
CVA6Cfg.XF16ALT ? 16 : // Xf16alt ext.
CVA6Cfg.XF8 ? 8 : // Xf8 ext.
1; // Unused in case of no FP
// Transprecision floating-point extensions configuration
bit RVFVec = CVA6Cfg.RVF & CVA6Cfg.XFVec & FLen>32; // FP32 vectors available if vectors and larger fmt enabled
bit XF16Vec = CVA6Cfg.XF16 & CVA6Cfg.XFVec & FLen>16; // FP16 vectors available if vectors and larger fmt enabled
bit XF16ALTVec = CVA6Cfg.XF16ALT & CVA6Cfg.XFVec & FLen>16; // FP16ALT vectors available if vectors and larger fmt enabled
bit XF8Vec = CVA6Cfg.XF8 & CVA6Cfg.XFVec & FLen>8; // FP8 vectors available if vectors and larger fmt enabled
bit EnableAccelerator = CVA6Cfg.RVV; // Currently only used by V extension (Ara)
int unsigned NrWbPorts = (CVA6Cfg.CvxifEn || EnableAccelerator) ? 5 : 4;
int unsigned ICACHE_INDEX_WIDTH = $clog2(CVA6Cfg.IcacheByteSize / CVA6Cfg.IcacheSetAssoc);
int unsigned DCACHE_INDEX_WIDTH = $clog2(CVA6Cfg.DcacheByteSize / CVA6Cfg.DcacheSetAssoc);
int unsigned DCACHE_OFFSET_WIDTH = $clog2(CVA6Cfg.DcacheLineWidth / 8);
// MMU
int unsigned VpnLen = (CVA6Cfg.XLEN == 64) ? (CVA6Cfg.RVH ? 29 : 27) : 20;
int unsigned PtLevels = (CVA6Cfg.XLEN == 64) ? 3 : 2;
config_pkg::cva6_cfg_t cfg;
cfg.XLEN = CVA6Cfg.XLEN;
cfg.VLEN = CVA6Cfg.VLEN;
cfg.PLEN = (CVA6Cfg.XLEN == 32) ? 34 : 56;
cfg.GPLEN = (CVA6Cfg.XLEN == 32) ? 34 : 41;
cfg.IS_XLEN32 = IS_XLEN32;
cfg.IS_XLEN64 = IS_XLEN64;
cfg.XLEN_ALIGN_BYTES = $clog2(CVA6Cfg.XLEN / 8);
cfg.ASID_WIDTH = (CVA6Cfg.XLEN == 64) ? 16 : 1;
cfg.VMID_WIDTH = (CVA6Cfg.XLEN == 64) ? 14 : 1;
cfg.FpgaEn = CVA6Cfg.FpgaEn;
cfg.FpgaAlteraEn = CVA6Cfg.FpgaAlteraEn;
cfg.TechnoCut = CVA6Cfg.TechnoCut;
cfg.SuperscalarEn = CVA6Cfg.SuperscalarEn;
cfg.NrCommitPorts = CVA6Cfg.SuperscalarEn ? unsigned'(2) : CVA6Cfg.NrCommitPorts;
cfg.NrIssuePorts = unsigned'(CVA6Cfg.SuperscalarEn ? 2 : 1);
cfg.SpeculativeSb = CVA6Cfg.SuperscalarEn;
cfg.NrLoadPipeRegs = CVA6Cfg.NrLoadPipeRegs;
cfg.NrStorePipeRegs = CVA6Cfg.NrStorePipeRegs;
cfg.AxiAddrWidth = CVA6Cfg.AxiAddrWidth;
cfg.AxiDataWidth = CVA6Cfg.AxiDataWidth;
cfg.AxiIdWidth = CVA6Cfg.AxiIdWidth;
cfg.AxiUserWidth = CVA6Cfg.AxiUserWidth;
cfg.MEM_TID_WIDTH = CVA6Cfg.MemTidWidth;
cfg.NrLoadBufEntries = CVA6Cfg.NrLoadBufEntries;
cfg.RVF = CVA6Cfg.RVF;
cfg.RVD = CVA6Cfg.RVD;
cfg.XF16 = CVA6Cfg.XF16;
cfg.XF16ALT = CVA6Cfg.XF16ALT;
cfg.XF8 = CVA6Cfg.XF8;
cfg.RVA = CVA6Cfg.RVA;
cfg.RVB = CVA6Cfg.RVB;
cfg.ZKN = CVA6Cfg.ZKN;
cfg.RVV = CVA6Cfg.RVV;
cfg.RVC = CVA6Cfg.RVC;
cfg.RVH = CVA6Cfg.RVH;
cfg.RVZCB = CVA6Cfg.RVZCB;
cfg.RVZCMP = CVA6Cfg.RVZCMP;
cfg.XFVec = CVA6Cfg.XFVec;
cfg.CvxifEn = CVA6Cfg.CvxifEn;
cfg.RVZiCond = CVA6Cfg.RVZiCond;
cfg.RVZicntr = CVA6Cfg.RVZicntr;
cfg.RVZihpm = CVA6Cfg.RVZihpm;
cfg.NR_SB_ENTRIES = CVA6Cfg.NrScoreboardEntries;
cfg.TRANS_ID_BITS = $clog2(CVA6Cfg.NrScoreboardEntries);
cfg.FpPresent = bit'(FpPresent);
cfg.NSX = bit'(NSX);
cfg.FLen = unsigned'(FLen);
cfg.RVFVec = bit'(RVFVec);
cfg.XF16Vec = bit'(XF16Vec);
cfg.XF16ALTVec = bit'(XF16ALTVec);
cfg.XF8Vec = bit'(XF8Vec);
// Can take 2 or 3 in single issue. 4 or 6 in dual issue.
cfg.NrRgprPorts = unsigned'(CVA6Cfg.SuperscalarEn ? 4 : 2);
// cfg.NrRgprPorts = unsigned'(CVA6Cfg.SuperscalarEn ? 6 : 3);
cfg.NrWbPorts = unsigned'(NrWbPorts);
cfg.EnableAccelerator = bit'(EnableAccelerator);
cfg.PerfCounterEn = CVA6Cfg.PerfCounterEn;
cfg.MmuPresent = CVA6Cfg.MmuPresent;
cfg.RVS = CVA6Cfg.RVS;
cfg.RVU = CVA6Cfg.RVU;
cfg.HaltAddress = CVA6Cfg.HaltAddress;
cfg.ExceptionAddress = CVA6Cfg.ExceptionAddress;
cfg.RASDepth = CVA6Cfg.RASDepth;
cfg.BTBEntries = CVA6Cfg.BTBEntries;
cfg.BHTEntries = CVA6Cfg.BHTEntries;
cfg.DmBaseAddress = CVA6Cfg.DmBaseAddress;
cfg.TvalEn = CVA6Cfg.TvalEn;
cfg.DirectVecOnly = CVA6Cfg.DirectVecOnly;
cfg.NrPMPEntries = CVA6Cfg.NrPMPEntries;
cfg.PMPCfgRstVal = CVA6Cfg.PMPCfgRstVal;
cfg.PMPAddrRstVal = CVA6Cfg.PMPAddrRstVal;
cfg.PMPEntryReadOnly = CVA6Cfg.PMPEntryReadOnly;
cfg.PMPG = CVA6Cfg.PMPG;
cfg.NOCType = CVA6Cfg.NOCType;
cfg.NrNonIdempotentRules = CVA6Cfg.NrNonIdempotentRules;
cfg.NonIdempotentAddrBase = CVA6Cfg.NonIdempotentAddrBase;
cfg.NonIdempotentLength = CVA6Cfg.NonIdempotentLength;
cfg.NrExecuteRegionRules = CVA6Cfg.NrExecuteRegionRules;
cfg.ExecuteRegionAddrBase = CVA6Cfg.ExecuteRegionAddrBase;
cfg.ExecuteRegionLength = CVA6Cfg.ExecuteRegionLength;
cfg.NrCachedRegionRules = CVA6Cfg.NrCachedRegionRules;
cfg.CachedRegionAddrBase = CVA6Cfg.CachedRegionAddrBase;
cfg.CachedRegionLength = CVA6Cfg.CachedRegionLength;
cfg.MaxOutstandingStores = CVA6Cfg.MaxOutstandingStores;
cfg.DebugEn = CVA6Cfg.DebugEn;
cfg.NonIdemPotenceEn = (CVA6Cfg.NrNonIdempotentRules > 0) && (CVA6Cfg.NonIdempotentLength > 0);
cfg.AxiBurstWriteEn = CVA6Cfg.AxiBurstWriteEn;
cfg.ICACHE_SET_ASSOC = CVA6Cfg.IcacheSetAssoc;
cfg.ICACHE_SET_ASSOC_WIDTH = CVA6Cfg.IcacheSetAssoc > 1 ? $clog2(CVA6Cfg.IcacheSetAssoc) :
CVA6Cfg.IcacheSetAssoc;
cfg.ICACHE_INDEX_WIDTH = ICACHE_INDEX_WIDTH;
cfg.ICACHE_TAG_WIDTH = cfg.PLEN - ICACHE_INDEX_WIDTH;
cfg.ICACHE_LINE_WIDTH = CVA6Cfg.IcacheLineWidth;
cfg.ICACHE_USER_LINE_WIDTH = (CVA6Cfg.AxiUserWidth == 1) ? 4 : CVA6Cfg.IcacheLineWidth;
cfg.DCacheType = CVA6Cfg.DCacheType;
cfg.DcacheIdWidth = CVA6Cfg.DcacheIdWidth;
cfg.DCACHE_SET_ASSOC = CVA6Cfg.DcacheSetAssoc;
cfg.DCACHE_SET_ASSOC_WIDTH = CVA6Cfg.DcacheSetAssoc > 1 ? $clog2(CVA6Cfg.DcacheSetAssoc) :
CVA6Cfg.DcacheSetAssoc;
cfg.DCACHE_INDEX_WIDTH = DCACHE_INDEX_WIDTH;
cfg.DCACHE_TAG_WIDTH = cfg.PLEN - DCACHE_INDEX_WIDTH;
cfg.DCACHE_LINE_WIDTH = CVA6Cfg.DcacheLineWidth;
cfg.DCACHE_USER_LINE_WIDTH = (CVA6Cfg.AxiUserWidth == 1) ? 4 : CVA6Cfg.DcacheLineWidth;
cfg.DCACHE_USER_WIDTH = CVA6Cfg.AxiUserWidth;
cfg.DCACHE_OFFSET_WIDTH = DCACHE_OFFSET_WIDTH;
cfg.DCACHE_NUM_WORDS = 2 ** (DCACHE_INDEX_WIDTH - DCACHE_OFFSET_WIDTH);
cfg.DCACHE_MAX_TX = unsigned'(2 ** CVA6Cfg.MemTidWidth);
cfg.DATA_USER_EN = CVA6Cfg.DataUserEn;
cfg.WtDcacheWbufDepth = CVA6Cfg.WtDcacheWbufDepth;
cfg.FETCH_USER_WIDTH = CVA6Cfg.FetchUserWidth;
cfg.FETCH_USER_EN = CVA6Cfg.FetchUserEn;
cfg.AXI_USER_EN = CVA6Cfg.DataUserEn | CVA6Cfg.FetchUserEn;
cfg.FETCH_WIDTH = unsigned'(CVA6Cfg.SuperscalarEn ? 64 : 32);
cfg.FETCH_ALIGN_BITS = $clog2(cfg.FETCH_WIDTH / 8);
cfg.INSTR_PER_FETCH = cfg.FETCH_WIDTH / (CVA6Cfg.RVC ? 16 : 32);
cfg.LOG2_INSTR_PER_FETCH = cfg.INSTR_PER_FETCH > 1 ? $clog2(cfg.INSTR_PER_FETCH) : 1;
cfg.ModeW = (CVA6Cfg.XLEN == 32) ? 1 : 4;
cfg.ASIDW = (CVA6Cfg.XLEN == 32) ? 9 : 16;
cfg.VMIDW = (CVA6Cfg.XLEN == 32) ? 7 : 14;
cfg.PPNW = (CVA6Cfg.XLEN == 32) ? 22 : 44;
cfg.GPPNW = (CVA6Cfg.XLEN == 32) ? 22 : 29;
cfg.MODE_SV = (CVA6Cfg.XLEN == 32) ? config_pkg::ModeSv32 : config_pkg::ModeSv39;
cfg.SV = (cfg.MODE_SV == config_pkg::ModeSv32) ? 32 : 39;
cfg.SVX = (cfg.MODE_SV == config_pkg::ModeSv32) ? 34 : 41;
cfg.InstrTlbEntries = CVA6Cfg.InstrTlbEntries;
cfg.DataTlbEntries = CVA6Cfg.DataTlbEntries;
cfg.UseSharedTlb = CVA6Cfg.UseSharedTlb;
cfg.SharedTlbDepth = CVA6Cfg.SharedTlbDepth;
cfg.VpnLen = VpnLen;
cfg.PtLevels = PtLevels;
cfg.X_NUM_RS = cfg.NrRgprPorts / cfg.NrIssuePorts;
cfg.X_ID_WIDTH = cfg.TRANS_ID_BITS;
cfg.X_RFR_WIDTH = cfg.XLEN;
cfg.X_RFW_WIDTH = cfg.XLEN;
cfg.X_NUM_HARTS = 1;
cfg.X_HARTID_WIDTH = cfg.XLEN;
cfg.X_DUALREAD = 0;
cfg.X_DUALWRITE = 0;
cfg.X_ISSUE_REGISTER_SPLIT = 0;
return cfg;
endfunction
endpackage