From 09e2cb829682d5df1321383dec448392ea5a35d8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jonathan=20Neusch=C3=A4fer?= <j.neuschaefer@gmx.net>
Date: Fri, 10 Jun 2016 19:35:15 +0200
Subject: [PATCH] UPSTREAM: arch/riscv: copy read/write8/16/32 from x86

BUG=None
BRANCH=None
TEST=None

Change-Id: I12de8f82499074f0fbbc1c09210b00c6a9614c1b
Original-Signed-off-by: Jonathan Neuschfer <j.neuschaefer@gmx.net>
Original-Reviewed-on: https://review.coreboot.org/15146
Original-Tested-by: build bot (Jenkins)
Original-Reviewed-by: Martin Roth <martinroth@google.com>
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/352023
Commit-Ready: Furquan Shaikh <furquan@chromium.org>
Tested-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@chromium.org>
---
 src/arch/riscv/include/arch/io.h | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/src/arch/riscv/include/arch/io.h b/src/arch/riscv/include/arch/io.h
index 804d7dc1b1..5bc10c0cd4 100644
--- a/src/arch/riscv/include/arch/io.h
+++ b/src/arch/riscv/include/arch/io.h
@@ -45,4 +45,34 @@ static inline uint32_t inl(uint16_t port)
 	return 0;
 }
 
+static inline __attribute__((always_inline)) uint8_t read8(const volatile void *addr)
+{
+	return *((volatile uint8_t *)(addr));
+}
+
+static inline __attribute__((always_inline)) uint16_t read16(const volatile void *addr)
+{
+	return *((volatile uint16_t *)(addr));
+}
+
+static inline __attribute__((always_inline)) uint32_t read32(const volatile void *addr)
+{
+	return *((volatile uint32_t *)(addr));
+}
+
+static inline __attribute__((always_inline)) void write8(volatile void *addr, uint8_t value)
+{
+	*((volatile uint8_t *)(addr)) = value;
+}
+
+static inline __attribute__((always_inline)) void write16(volatile void *addr, uint16_t value)
+{
+	*((volatile uint16_t *)(addr)) = value;
+}
+
+static inline __attribute__((always_inline)) void write32(volatile void *addr, uint32_t value)
+{
+	*((volatile uint32_t *)(addr)) = value;
+}
+
 #endif