acpi: add ACPI power off functionality

Signed-off-by: Pawel Wieczorkiewicz <[email protected]>
KernelTestFramework · Aug 30, 2021 · ea4f092 · ea4f092
1 parent b84be73
commit ea4f092
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Showing 4 changed files with 12 additions and 1 deletion.
diff --git a/Makefile b/Makefile
@@ -227,7 +227,6 @@ endif # HAVE_KVM
 QEMU_PARAMS += -m 8192
 QEMU_PARAMS += -display none -vga none -vnc none
 QEMU_PARAMS += -serial stdio
-QEMU_PARAMS += -no-reboot -no-shutdown
 QEMU_PARAMS += -smp cpus=2
 
 QEMU_PARAMS_KERNEL := -append "param1 param2 param3"

diff --git a/common/acpi.c b/common/acpi.c
@@ -511,4 +511,11 @@ ACPI_STATUS init_acpi(unsigned bsp_cpu_id) {
     status = InitializeFullAcpi();
     return status;
 }
+
+void acpi_power_off(void) {
+    AcpiEnterSleepStatePrep(ACPI_STATE_S5);
+    cli();
+    AcpiEnterSleepState(ACPI_STATE_S5);
+    panic("Power Off");
+}
 #endif /* KTF_ACPICA */
diff --git a/common/kernel.c b/common/kernel.c
@@ -22,6 +22,7 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
+#include <acpi_ktf.h>
 #include <console.h>
 #include <drivers/keyboard.h>
 #include <ktf.h>
@@ -67,5 +68,8 @@ void __naked kernel_main(void) {
 
     printk("All tasks done.\n");
 
+#ifdef KTF_ACPICA
+    acpi_power_off();
+#endif
     echo_loop();
 }
diff --git a/include/acpi_ktf.h b/include/acpi_ktf.h
@@ -289,6 +289,7 @@ extern void acpi_walk_subtables(ACPI_SUBTABLE_HEADER *entry, uint32_t length,
                                 acpi_subtable_parser_t parser, void *arg);
 
 extern ACPI_STATUS init_acpi(unsigned bsp_cpu_id);
+extern void acpi_power_off(void);
 
 #endif /* KTF_ACPICA */
 #endif /* KTF_ACPI_H */