soc/amd/common/block/acpi: Add halt.c

Creating initial common acpi and implement halt.h

BUG=b:71575631
BRANCH=none
TEST=put poweroff() call in Kahlee's mainboard_final and board turns off
correctly

Change-Id: Ie7dd9851dcb240c53f2487b4f4b8a3e51d6b98d6
Signed-off-by: Chris Ching <chingcodes@chromium.org>
Reviewed-on: https://review.coreboot.org/23074
Reviewed-by: Marc Jones <marc@marcjonesconsulting.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>

2 files changed, 25 insertions, 0 deletions

diff --git a/src/soc/amd/common/block/acpi/Makefile.inc b/src/soc/amd/common/block/acpi/Makefile.inc
new file mode 100644
index 0000000000..749dd62de5
--- /dev/null
+++ b/src/soc/amd/common/block/acpi/Makefile.inc
@@ -0,0 +1 @@
+ramstage-y += halt.c
diff --git a/src/soc/amd/common/block/acpi/halt.c b/src/soc/amd/common/block/acpi/halt.c
new file mode 100644
index 0000000000..6038a8c736
--- /dev/null
+++ b/src/soc/amd/common/block/acpi/halt.c
@@ -0,0 +1,24 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2018 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <arch/acpi.h>
+#include <soc/southbridge.h>
+#include <halt.h>
+
+void poweroff(void)
+{
+	outl((SLP_TYP_S5 << SLP_TYP_SHIFT) | SLP_EN, pm_acpi_pm_cnt_blk());
+	halt();
+}