New patch to review for coreboot: libpayload: arm(64): add read8/16/32 and write8/16/32

[Patrick Georgi]

Patrick Georgi ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/10773

-gerrit

commit 06dd3b0255be0ffdfc575bd925b905b7416d4550
Author: Daisuke Nojiri 
Date:   Thu Jun 25 16:19:49 2015 -0700

libpayload: arm(64): add read8/16/32 and write8/16/32

This applys the same change made by
    https://chromium-review.googlesource.com/261692
    to libpayload.

BUG=none
    BRANCH=tot
    TEST=built for veyron_jerry, rush_ryu, samus

Change-Id: I26dd66d79cd1559a7852b3c9d252420f2fed5fa0
    Signed-off-by: Patrick Georgi 
    Original-Commit-Id: d0d6f70aa805e18966e80618fbf9e9605274b030
    Original-Change-Id: Ib0c199238f8fa58643d51782b17550dbd0d9ebd7
    Original-Signed-off-by: Daisuke Nojiri 
    Original-Reviewed-on: https://chromium-review.googlesource.com/282541
    Original-Reviewed-by: Aaron Durbin 
---
 payloads/libpayload/include/arm/arch/io.h   | 47 +++++++++++++++++++++++++++++
 payloads/libpayload/include/arm64/arch/io.h | 47 +++++++++++++++++++++++++++++
 2 files changed, 94 insertions(+)

diff --git a/payloads/libpayload/include/arm/arch/io.h b/payloads/libpayload/include/arm/arch/io.h
index df3a0d5..2743852 100644
--- a/payloads/libpayload/include/arm/arch/io.h
+++ b/payloads/libpayload/include/arm/arch/io.h
@@ -34,6 +34,14 @@
 #include <stdint.h>
 #include <arch/cache.h>

+/*
+ * readb/w/l writeb/w/l are deprecated. use read8/16/32 and write8/16/32
+ * instead for future development.
+ *
+ * TODO: make the existing code use read8/16/32 and write8/16/32 then remove
+ * readb/w/l and writeb/w/l.
+ */
+
 static inline uint8_t readb(volatile const void *_a)
 {
    dmb();
@@ -73,4 +81,43 @@ static inline void writel(uint32_t _v, volatile void *_a)
    dmb();
 }

+static inline uint8_t read8(const void *addr)
+{
+	dmb();
+	return *(volatile uint8_t *)addr;
+}
+
+static inline uint16_t read16(const void *addr)
+{
+	dmb();
+	return *(volatile uint16_t *)addr;
+}
+
+static inline uint32_t read32(const void *addr)
+{
+	dmb();
+	return *(volatile uint32_t *)addr;
+}
+
+static inline void write8(void *addr, uint8_t val)
+{
+	dmb();
+	*(volatile uint8_t *)addr = val;
+	dmb();
+}
+
+static inline void write16(void *addr, uint16_t val)
+{
+	dmb();
+	*(volatile uint16_t *)addr = val;
+	dmb();
+}
+
+static inline void write32(void *addr, uint32_t val)
+{
+	dmb();
+	*(volatile uint32_t *)addr = val;
+	dmb();
+}
+
 #endif
diff --git a/payloads/libpayload/include/arm64/arch/io.h b/payloads/libpayload/include/arm64/arch/io.h
index f8be1ae..c177598 100644
--- a/payloads/libpayload/include/arm64/arch/io.h
+++ b/payloads/libpayload/include/arm64/arch/io.h
@@ -35,6 +35,14 @@
 #include <arch/cache.h>
 #include <arch/lib_helpers.h>

+/*
+ * readb/w/l writeb/w/l are deprecated. use read8/16/32 and write8/16/32
+ * instead for future development.
+ *
+ * TODO: make the existing code use read8/16/32 and write8/16/32 then remove
+ * readb/w/l and writeb/w/l.
+ */
+
 static inline uint8_t readb(volatile const void *_a)
 {
    dmb();
@@ -74,4 +82,43 @@ static inline void writel(uint32_t _v, volatile void *_a)
    dmb();
 }

+static inline uint8_t read8(const void *addr)
+{
+	dmb();
+	return *(volatile uint8_t *)addr;
+}
+
+static inline uint16_t read16(const void *addr)
+{
+	dmb();
+	return *(volatile uint16_t *)addr;
+}
+
+static inline uint32_t read32(const void *addr)
+{
+	dmb();
+	return *(volatile uint32_t *)addr;
+}
+
+static inline void write8(void *addr, uint8_t val)
+{
+	dmb();
+	*(volatile uint8_t *)addr = val;
+	dmb();
+}
+
+static inline void write16(void *addr, uint16_t val)
+{
+	dmb();
+	*(volatile uint16_t *)addr = val;
+	dmb();
+}
+
+static inline void write32(void *addr, uint32_t val)
+{
+	dmb();
+	*(volatile uint32_t *)addr = val;
+	dmb();
+}
+
 #endif