soc/intel/apollolake: provide poweroff() implementation
Implement poweroff() by putting the chipset into ACPI S5 state.
BUG=chrome-os-partner:54977
Change-Id: I4ee269f03afd252d4bce909a8cc7c64d6270b16e
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/15686
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins)
diff --git a/src/soc/intel/apollolake/pmutil.c b/src/soc/intel/apollolake/pmutil.c
index 874d9ad..e23feb2 100644
--- a/src/soc/intel/apollolake/pmutil.c
+++ b/src/soc/intel/apollolake/pmutil.c
@@ -21,6 +21,7 @@
#include <console/console.h>
#include <rules.h>
#include <device/pci_def.h>
+#include <halt.h>
#include <soc/iomap.h>
#include <soc/pci_devs.h>
#include <soc/pm.h>
@@ -413,3 +414,9 @@
const uint16_t port = ACPI_PMIO_BASE + PM1_CNT;
outl((inl(port) & ~(SLP_TYP)) | (SLP_TYP_S5 << SLP_TYP_SHIFT), port);
}
+
+void poweroff(void)
+{
+ enable_pm1_control(SLP_EN | (SLP_TYP_S5 << SLP_TYP_SHIFT));
+ halt();
+}