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Almost have it working for both buildroot and single elfs.

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Rose Thompson 2024-05-17 17:34:29 -05:00
parent 224b2e4dc4
commit 6e3ccbb9c1
1 changed files with 53 additions and 51 deletions
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testbench/testbench.sv
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@ -696,6 +696,10 @@ end
initial begin initial begin
// imperasDV requires the elffile be defined at the begining of the simulation. // imperasDV requires the elffile be defined at the begining of the simulation.
int iter; int iter;
longint x64;
int x32[2];
longint index;
string memfilenameImperasDV, bootmemfilenameImperasDV;
#1; #1;
IDV_MAX_ERRORS = 3; IDV_MAX_ERRORS = 3;
elffilename = ElfFile; elffilename = ElfFile;
@ -715,10 +719,55 @@ end
if(elffilename == "buildroot") filename = ""; if(elffilename == "buildroot") filename = "";
else filename = elffilename; else filename = elffilename;
// use the ImperasDV rvviRefInit to load the reference model with an elf file
if(elffilename != "none") begin
if (!rvviRefInit(filename)) begin if (!rvviRefInit(filename)) begin
$display($sformatf("%m @ t=%0t: rvviRefInit failed", $time)); $display($sformatf("%m @ t=%0t: rvviRefInit failed", $time));
$fatal; $fatal;
end end
end else begin // for buildroot use the binary instead to load teh reference model.
if (!rvviRefInit("")) begin // still have to call with nothing
$display($sformatf("%m @ t=%0t: rvviRefInit failed", $time));
$fatal;
end
memfilenameImperasDV = {RISCV_DIR, "/linux-testvectors/ram.bin"};
bootmemfilenameImperasDV = {RISCV_DIR, "/linux-testvectors/bootmem.bin"};
$display("RVVI Loading bootmem.bin");
memFile = $fopen(bootmemfilenameImperasDV, "rb");
index = 'h1000 - 8;
while(!$feof(memFile)) begin
index+=8;
readResult = $fread(x64, memFile);
if (x64 == 0) continue;
x32[0] = x64 & 'hffffffff;
x32[1] = x64 >> 32;
rvviRefMemoryWrite(0, index+0, x32[0], 4);
rvviRefMemoryWrite(0, index+4, x32[1], 4);
//$display("boot %08X x32[0]=%08X x32[1]=%08X", index, x32[0], x32[1]);
end
$fclose(memFile);
$display("RVVI Loading ram.bin");
memFile = $fopen(memfilenameImperasDV, "rb");
index = 'h80000000 - 8;
while(!$feof(memFile)) begin
index+=8;
readResult = $fread(x64, memFile);
if (x64 == 0) continue;
x32[0] = x64 & 'hffffffff;
x32[1] = x64 >> 32;
rvviRefMemoryWrite(0, index+0, x32[0], 4);
rvviRefMemoryWrite(0, index+4, x32[1], 4);
//$display("ram %08X x32[0]=%08X x32[1]=%08X", index, x32[0], x32[1]);
end
$fclose(memFile);
$display("RVVI Loading Complete");
void'(rvviRefPcSet(0, P.RESET_VECTOR)); // set BOOTROM address
end
// Volatile CSRs // Volatile CSRs
void'(rvviRefCsrSetVolatile(0, 32'hC00)); // CYCLE void'(rvviRefCsrSetVolatile(0, 32'hC00)); // CYCLE
@ -773,53 +822,6 @@ end
void'(rvviRefCsrSetVolatile(0, 32'h104)); // SIE - Temporary!!!! void'(rvviRefCsrSetVolatile(0, 32'h104)); // SIE - Temporary!!!!
// Load memory
// *** RT: This section can probably be moved into the same chunk of code which
// loads the memories. However I'm not sure that ImperasDV supports reloading
// the memories without relaunching the simulator.
if(elffilename == "buildroot") begin
longint x64;
int x32[2];
longint index;
string memfilenameImperasDV, bootmemfilenameImperasDV;
memfilenameImperasDV = {RISCV_DIR, "/linux-testvectors/ram.bin"};
bootmemfilenameImperasDV = {RISCV_DIR, "/linux-testvectors/bootmem.bin"};
$display("RVVI Loading bootmem.bin");
memFile = $fopen(bootmemfilenameImperasDV, "rb");
index = 'h1000 - 8;
while(!$feof(memFile)) begin
index+=8;
readResult = $fread(x64, memFile);
if (x64 == 0) continue;
x32[0] = x64 & 'hffffffff;
x32[1] = x64 >> 32;
rvviRefMemoryWrite(0, index+0, x32[0], 4);
rvviRefMemoryWrite(0, index+4, x32[1], 4);
//$display("boot %08X x32[0]=%08X x32[1]=%08X", index, x32[0], x32[1]);
end
$fclose(memFile);
$display("RVVI Loading ram.bin");
memFile = $fopen(memfilenameImperasDV, "rb");
index = 'h80000000 - 8;
while(!$feof(memFile)) begin
index+=8;
readResult = $fread(x64, memFile);
if (x64 == 0) continue;
x32[0] = x64 & 'hffffffff;
x32[1] = x64 >> 32;
rvviRefMemoryWrite(0, index+0, x32[0], 4);
rvviRefMemoryWrite(0, index+4, x32[1], 4);
//$display("ram %08X x32[0]=%08X x32[1]=%08X", index, x32[0], x32[1]);
end
$fclose(memFile);
$display("RVVI Loading Complete");
void'(rvviRefPcSet(0, P.RESET_VECTOR)); // set BOOTROM address
end
end end
always @(dut.core.priv.priv.csr.csri.MIP_REGW[7]) void'(rvvi.net_push("MTimerInterrupt", dut.core.priv.priv.csr.csri.MIP_REGW[7])); always @(dut.core.priv.priv.csr.csri.MIP_REGW[7]) void'(rvvi.net_push("MTimerInterrupt", dut.core.priv.priv.csr.csri.MIP_REGW[7]));