Fix typos

docs/Simulation/Software-RTL-Simulation.rst

@@ -156,7 +156,12 @@ Loadmem files should be ELF files. In the most common use case, this can be the
 .. code-block:: shell
 
     make run-binary BINARY=test.riscv LOADMEM=test.riscv
-    make run-binary BINART=test.riscv LOADMEM=1
+
+Usually the ``LOADMEM`` ELF is the same as the ``BINARY`` ELF, so ``LOADMEM=1`` can be used as a shortcut.
+
+.. code-block:: shell
+
+   make run-binary BINARY=test.riscv LOADMEM=1
 
 Generating Waveforms
 -----------------------

generators/chipyard/src/main/scala/HarnessBinders.scala

@@ -185,7 +185,7 @@ class WithBlackBoxSimMem(additionalLatency: Int = 0) extends OverrideHarnessBind
   (system: CanHaveMasterAXI4MemPort, th: HasHarnessSignalReferences, ports: Seq[ClockedAndResetIO[AXI4Bundle]]) => {
     val p: Parameters = chipyard.iobinders.GetSystemParameters(system)
     (ports zip system.memAXI4Node.edges.in).map { case (port, edge) =>
-      // TODO FIX: This currently makes each SimDRAM contian the entire memory space
+      // TODO FIX: This currently makes each SimDRAM contain the entire memory space
       val memSize = p(ExtMem).get.master.size
       val memBase = p(ExtMem).get.master.base
       val lineSize = p(CacheBlockBytes)

scripts/generate-ckpt.sh

@@ -7,18 +7,18 @@ usage() {
     echo ""
     echo "Options"
     echo "  --help -h  : Display this message"
-    echo "  -n <n>     : Mumber of harts"
+    echo "  -n <n>     : Number of harts"
     echo "  -b <elf>   : Binary to run in spike"
     echo "  -p <pc>    : PC to take checkpoint at [default 0x80000000]"
-    echo "  -c <cycles>: Cycles after PC to take checkpoint at [default 0]"
-    echo "  -m <isa>   : ISA to pass to spike for checkpoint generation [defualt rv64gc]"
+    echo "  -i <insns> : Instructions after PC to take checkpoint at [default 0]"
+    echo "  -m <isa>   : ISA to pass to spike for checkpoint generation [default rv64gc]"
     exit "$1"
 }
 
 NHARTS=1
 BINARY=""
 PC="0x80000000"
-CYCLES=0
+INSNS=0
 ISA="rv64gc"
 while [ "$1" != "" ];
 do
@@ -34,9 +34,9 @@ do
 	-p )
 	    shift
 	    PC=$1 ;;
-	-c )
+	-i )
 	    shift
-	    CYCLES=$1 ;;
+	    INSNS=$1 ;;
         -m )
             shift
             ISA=$1 ;;
@@ -50,7 +50,7 @@ BASEMEM="$((0x80000000)):$((0x10000000))"
 SPIKEFLAGS="-p$NHARTS --pmpregions=0 --isa=$ISA -m$BASEMEM"
 
 BASENAME=$(basename -- $BINARY)
-DIRNAME=$BASENAME.$PC.$CYCLES.loadarch
+DIRNAME=$BASENAME.$PC.$INSNS.loadarch
 echo "Generating loadarch directory $DIRNAME"
 rm -rf $DIRNAME
 mkdir -p $DIRNAME
@@ -63,7 +63,7 @@ SPIKECMD_FILE=$DIRNAME/spikecmd.sh
 
 echo "Generating state capture spike interactive commands in $CMDS_FILE"
 echo "until pc 0 $PC" >> $CMDS_FILE
-echo "rs $CYCLES" >> $CMDS_FILE
+echo "rs $INSNS" >> $CMDS_FILE
 echo "dump" >> $CMDS_FILE
 for (( h=0; h<$NHARTS; h++ ))
 do
@@ -113,8 +113,6 @@ do
 done
 echo "quit" >> $CMDS_FILE
 
-#cat $CMDS_FILE
-
 echo "spike -d --debug-cmd=$CMDS_FILE $SPIKEFLAGS $BINARY" > $SPIKECMD_FILE
 
 echo "Capturing state at checkpoint to spikeout"

variables.mk

@@ -25,6 +25,8 @@ HELP_PROJECT_VARIABLES = \
 
 HELP_SIMULATION_VARIABLES = \
 "   BINARY                 = riscv elf binary that the simulator will run when using the run-binary* targets" \
+"   LOADMEM                = riscv elf binary that should be loaded directly into simulated DRAM. LOADMEM=1 will load the BINARY elf" \
+"   LOADARCH               = path to a architectural checkpoint directory that should end in .loadarch/, for restoring from a checkpoint" \
 "   VERBOSE_FLAGS          = flags used when doing verbose simulation [$(VERBOSE_FLAGS)]" \
 "   timeout_cycles         = number of clock cycles before simulator times out, defaults to 10000000" \
 "   bmark_timeout_cycles   = number of clock cycles before benchmark simulator times out, defaults to 100000000"