diff --git a/arch/sparc64/entry.S b/arch/sparc64/entry.S
index cfc31fc..9f7698d 100644
--- a/arch/sparc64/entry.S
+++ b/arch/sparc64/entry.S
@@ -45,6 +45,9 @@ entry:
         wrpr    %g0, 0, %canrestore
         wrpr    %g0, 0, %otherwin
         wrpr    %g0, 0, %wstate
+        ! 100 Hz timer
+        set     10 * 1000 * 1000, %g1
+        wr      %g1, 0, %tick_cmpr
 
         ! Disable I/D MMUs and caches
         stxa    %g0, [%g0] ASI_LSU_CONTROL
diff --git a/config/examples/cross-sparc64_rules.xml b/config/examples/cross-sparc64_rules.xml
index 3ddab20..2a46d58 100644
--- a/config/examples/cross-sparc64_rules.xml
+++ b/config/examples/cross-sparc64_rules.xml
@@ -20,12 +20,12 @@ NM := sparc64-linux-nm
 STRIP := sparc64-linux-strip
 RANLIB := sparc64-linux-ranlib
 CFLAGS := -Os -Wall -W -DNATIVE_BITWIDTH_EQUALS_HOST_BITWIDTH -USWAP_ENDIANNESS -g
-CFLAGS+= -Wa,-xarch=v9 -Wa,-64 -m64 -mcpu=ultrasparc -mcmodel=medany
+CFLAGS+= -Wa,-xarch=v9b -Wa,-64 -m64 -mcpu=ultrasparc -mcmodel=medany
 CFLAGS+= -fno-builtin -nostdlib -ffreestanding
 CFLAGS+= -Wredundant-decls -Wshadow -Wpointer-arith -Wstrict-prototypes -Wmissing-declarations
 CFLAGS+= -Wundef -Wendif-labels -Wstrict-aliasing
 INCLUDES := -Iinclude -Ikernel/include -I$(ODIR)/target/include
-AS_FLAGS := -Wa,-xarch=v9 -Wa,-64 -g
+AS_FLAGS := -Wa,-xarch=v9b -Wa,-64 -g
 
 #
 # pre rules
diff --git a/config/examples/sparc64_rules.xml b/config/examples/sparc64_rules.xml
index 3ed16fa..d2d6535 100644
--- a/config/examples/sparc64_rules.xml
+++ b/config/examples/sparc64_rules.xml
@@ -29,11 +29,11 @@ ifeq ($(shell uname), Linux)
 endif
 
 CFLAGS := -Os -Wall -W -DNATIVE_BITWIDTH_EQUALS_HOST_BITWIDTH -USWAP_ENDIANNESS -fno-builtin -g
-CFLAGS+= -Wa,-xarch=v9 -Wa,-64 -m64 -mcpu=ultrasparc -mcmodel=medany
+CFLAGS+= -Wa,-xarch=v9b -Wa,-64 -m64 -mcpu=ultrasparc -mcmodel=medany
 CFLAGS+= -Wredundant-decls -Wshadow -Wpointer-arith -Wstrict-prototypes -Wmissing-declarations
 CFLAGS+= -Wundef -Wendif-labels -Wstrict-aliasing
 INCLUDES := -Iinclude -Ikernel/include -I$(ODIR)/target/include
-AS_FLAGS := -Wa,-xarch=v9 -Wa,-64 -g
+AS_FLAGS := -Wa,-xarch=v9b -Wa,-64 -g
 
 #
 # pre rules