run: update RISC-V run script support

* fix build error for bbl upon intial build
* set memory to 128 MB in spike
* support 'forever' timeout

issue #2423

tool/run/image/bbl

@@ -2,5 +2,5 @@ proc run_image {elf_img} {
 	puts "using '$elf_img' as bbl image"
 
 	exec rm -f bbl/image.o
-	exec make IMAGE_ELF=[pwd]/$elf_img bbl
+	exec -ignorestderr make IMAGE_ELF=[pwd]/$elf_img bbl
 }

tool/run/log/spike

@@ -7,10 +7,15 @@ proc run_log { wait_for_re timeout_value } {
 	global spike_spawn_id
 	global output_spawn_id
 
-	set timeout 210
 	set kernel_msg [run_boot_string]
 	set output_spawn_id $spike_spawn_id
 
+	if {$wait_for_re == "forever"} {
+		set timeout -1
+	} else {
+		set timeout $timeout_value
+	}
+
 	expect {
 		-i $output_spawn_id $kernel_msg { }
 		eof         {

tool/run/power_on/spike

@@ -18,7 +18,7 @@ proc run_power_on { } {
 
 	if {![is_spike_available]} { return 0 }
 
-	append spike_args " [run_dir]/image.elf "
+	append spike_args "-m128 [pwd]/debug/bbl "
 
 	set spike "spike"
 	eval spawn $spike $spike_args