ec/kontron: Add support for Kontron kempld

A programmable logic device used by Kontron as EC on their COM express
modules. The name `kempld` is taken from Linux kernel sources, as is the
I2C driver. The meaning of the acronym is unclear, probably: Kontron
Embedded Module PLD.

Change-Id: If9a0826c4a8f5c8cd573610c2d10561334258b36
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/c/29476
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

1 files changed, 29 insertions, 0 deletions

diff --git a/src/ec/kontron/kempld/kempld.h b/src/ec/kontron/kempld/kempld.h
new file mode 100644
index 0000000000..fe5f54f02a
--- /dev/null
+++ b/src/ec/kontron/kempld/kempld.h
@@ -0,0 +1,29 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2017 secunet Security Networks AG
+ *
+ * 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.
+ */
+
+#ifndef EC_KONTRON_KEMPLD_H
+#define EC_KONTRON_KEMPLD_H
+
+#include <stdint.h>
+
+void kempld_write8(uint8_t addr, uint8_t data);
+uint8_t kempld_read8(uint8_t addr);
+
+int kempld_get_mutex(int timeout_ms);
+void kempld_release_mutex(void);
+
+void kempld_enable_uart_for_console(void);
+
+#endif /* EC_KONTRON_KEMPLD_H */