soc/intel/skylake: Use Broadwell as comparision base for Skylake SOC

Use the Broadwell implementation as the comparison base for Skylake.

BRANCH=none
BUG=None
TEST=None

Change-Id: I22eb55ea89eb0d6883f98e4c72a6d243e819e6d8
Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com>
Reviewed-on: http://review.coreboot.org/10340
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

1 files changed, 49 insertions, 0 deletions

diff --git a/src/soc/intel/skylake/reset.c b/src/soc/intel/skylake/reset.c
new file mode 100644
index 0000000000..a56ec24df0
--- /dev/null
+++ b/src/soc/intel/skylake/reset.c
@@ -0,0 +1,49 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008-2009 coresystems GmbH
+ * Copyright (C) 2014 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <arch/io.h>
+#include <halt.h>
+#include <reset.h>
+#include <soc/reset.h>
+
+/*
+ * Soft reset (INIT# to cpu) - write 0x1 to I/O 0x92
+ * Soft reset (INIT# to cpu)- write 0x4 to I/0 0xcf9
+ * Cold reset (S0->S5->S0) - write 0xe to I/0 0xcf9
+ * Warm reset (PLTRST# assertion) - write 0x6 to I/O 0xcf9
+ * Global reset (S0->S5->S0 with ME reset) - write 0x6 or 0xe to 0xcf9 but
+ * with ETR[20] set.
+ */
+
+void soft_reset(void)
+{
+        outb(0x04, 0xcf9);
+}
+
+void hard_reset(void)
+{
+        outb(0x06, 0xcf9);
+}
+
+void reset_system(void)
+{
+	hard_reset();
+	halt();
+}