From 4c87a1868835d05f1cadae7b8ad6a7c95d9d9c0e Mon Sep 17 00:00:00 2001
From: Ross Philipson <philipsonr@ainfosec.com>
Date: Tue, 14 Mar 2017 15:40:33 -0400
Subject: Initial commit of EFI TBOOT work from internal project.

Signed-off-by: Ross Philipson <philipsonr@ainfosec.com>
---
 tboot/include/io.h | 91 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 tboot/include/io.h

(limited to 'tboot/include/io.h')

diff --git a/tboot/include/io.h b/tboot/include/io.h
new file mode 100644
index 0000000..71ef0ad
--- /dev/null
+++ b/tboot/include/io.h
@@ -0,0 +1,91 @@
+/*-
+ * Copyright (c) 1993 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+/*
+ * Portions copyright (c) 2010, Intel Corporation
+ */
+
+#ifndef __IO_H__
+#define __IO_H__
+
+/* from:
+ * $FreeBSD: src/sys/i386/include/cpufunc.h,v 1.158 2010/01/01 20:55:11 obrien Exp $
+ */
+
+/* modified to use tboot's types */
+
+#define readb(va)	(*(volatile uint8_t *) (va))
+#define readw(va)	(*(volatile uint16_t *) (va))
+#define readl(va)	(*(volatile uint32_t *) (va))
+
+#define writeb(va, d)	(*(volatile uint8_t *) (va) = (d))
+#define writew(va, d)	(*(volatile uint16_t *) (va) = (d))
+#define writel(va, d)	(*(volatile uint32_t *) (va) = (d))
+
+static inline uint8_t inb(uint16_t port)
+{
+	uint8_t	data;
+
+	__asm volatile("inb %w1, %0" : "=a" (data) : "Nd" (port));
+	return (data);
+}
+
+static inline uint16_t inw(uint16_t port)
+{
+	uint16_t data;
+
+	__asm volatile("inw %w1, %0" : "=a" (data) : "Nd" (port));
+	return (data);
+}
+
+static inline uint32_t inl(uint16_t port)
+{
+	uint32_t data;
+
+	__asm volatile("inl %w1, %0" : "=a" (data) : "Nd" (port));
+	return (data);
+}
+
+static inline void outb(uint16_t port, uint8_t data)
+{
+	__asm __volatile("outb %0, %w1" : : "a" (data), "Nd" (port));
+}
+
+static inline void outw(uint16_t port, uint16_t data)
+{
+	__asm volatile("outw %0, %w1" : : "a" (data), "Nd" (port));
+}
+
+static inline void outl(uint16_t port, uint32_t data)
+{
+	__asm volatile("outl %0, %w1" : : "a" (data), "Nd" (port));
+}
+
+
+#endif /* __IO_H__ */
-- 
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