Bug: https://bugs.launchpad.net/bugs/1859021
Signed-off-by: Alex Bennée <alex.ben...@linaro.org>
---
tests/tcg/aarch64/system/vtimer.c | 48 +++++++++++++++++++++++
tests/tcg/aarch64/Makefile.softmmu-target | 4 ++
2 files changed, 52 insertions(+)
create mode 100644 tests/tcg/aarch64/system/vtimer.c
diff --git a/tests/tcg/aarch64/system/vtimer.c
b/tests/tcg/aarch64/system/vtimer.c
new file mode 100644
index 00000000000..42f2f7796c7
--- /dev/null
+++ b/tests/tcg/aarch64/system/vtimer.c
@@ -0,0 +1,48 @@
+/*
+ * Simple Virtual Timer Test
+ *
+ * Copyright (c) 2020 Linaro Ltd
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include <inttypes.h>
+#include <minilib.h>
+
+/* grabbed from Linux */
+#define __stringify_1(x...) #x
+#define __stringify(x...) __stringify_1(x)
+
+#define read_sysreg(r) ({ \
+ uint64_t __val; \
+ asm volatile("mrs %0, " __stringify(r) : "=r" (__val)); \
+ __val; \
+})
+
+#define write_sysreg(r, v) do { \
+ uint64_t __val = (uint64_t)(v); \
+ asm volatile("msr " __stringify(r) ", %x0" \
+ : : "rZ" (__val)); \
+} while (0)
+
+int main(void)
+{
+ int i;
+
+ ml_printf("VTimer Test\n");
+
+ write_sysreg(cntvoff_el2, 1);
+ write_sysreg(cntv_cval_el0, -1);
+ write_sysreg(cntv_ctl_el0, 1);
+
+ ml_printf("cntvoff_el2=%lx\n", read_sysreg(cntvoff_el2));
+ ml_printf("cntv_cval_el0=%lx\n", read_sysreg(cntv_cval_el0));
+ ml_printf("cntv_ctl_el0=%lx\n", read_sysreg(cntv_ctl_el0));
+
+ /* Now read cval a few times */
+ for (i = 0; i < 10; i++) {
+ ml_printf("%d: cntv_cval_el0=%lx\n", i, read_sysreg(cntv_cval_el0));
+ }
+
+ return 0;
+}
diff --git a/tests/tcg/aarch64/Makefile.softmmu-target
b/tests/tcg/aarch64/Makefile.softmmu-target
index 7b4eede3f07..62cdddbb215 100644
--- a/tests/tcg/aarch64/Makefile.softmmu-target
+++ b/tests/tcg/aarch64/Makefile.softmmu-target
@@ -62,3 +62,7 @@ run-memory-replay: memory-replay run-memory-record
"$< on $(TARGET_NAME)")
EXTRA_TESTS+=memory-record memory-replay
+
+# vtimer test
+QEMU_EL2_MACHINE=-machine virt,virtualization=on,gic-version=2 -cpu cortex-a57
-smp 4
+run-vtimer: QEMU_OPTS=$(QEMU_EL2_MACHINE) $(QEMU_SEMIHOST) -kernel
--
2.20.1
