arch/riscv: copy read/write8/16/32 from x86

Change-Id: I12de8f82499074f0fbbc1c09210b00c6a9614c1b
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/15146
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>

1 files changed, 30 insertions, 0 deletions

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