[coreboot-gerrit] Change in coreboot[master]: src/arch/ppc64/include/arch/mmio.h: ignore HRMOR for POWER9

[Sergii Dmytruk (Code Review)]

Attention is currently required from: Ron Minnich.
Sergii Dmytruk has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/57080 )

Change subject: src/arch/ppc64/include/arch/mmio.h: ignore HRMOR for POWER9
......................................................................

src/arch/ppc64/include/arch/mmio.h: ignore HRMOR for POWER9

Change-Id: I9895fc0dcc0ab72151f3b2bde409c8556525433d
Signed-off-by: Yaroslav Kurlaev 
---
M src/arch/ppc64/include/arch/mmio.h
1 file changed, 24 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/80/57080/1

diff --git a/src/arch/ppc64/include/arch/mmio.h b/src/arch/ppc64/include/arch/mmio.h
index 6428043..b06a0b7 100644
--- a/src/arch/ppc64/include/arch/mmio.h
+++ b/src/arch/ppc64/include/arch/mmio.h
@@ -11,31 +11,55 @@

static inline uint8_t read8(const volatile void *addr)
 {
+#if CONFIG(CPU_POWER9)
+	// Set bit to ignore HRMOR
+	addr = (const volatile void *)((uint64_t)addr | 0x8000000000000000);
+#endif
    return *(volatile uint8_t *)addr;
 }

static inline uint16_t read16(const volatile void *addr)
 {
+#if CONFIG(CPU_POWER9)
+	// Set bit to ignore HRMOR
+	addr = (const volatile void *)((uint64_t)addr | 0x8000000000000000);
+#endif
    return *(volatile uint16_t *)addr;
 }

static inline uint32_t read32(const volatile void *addr)
 {
+#if CONFIG(CPU_POWER9)
+	// Set bit to ignore HRMOR
+	addr = (const volatile void *)((uint64_t)addr | 0x8000000000000000);
+#endif
    return *(volatile uint32_t *)addr;
 }

static inline void write8(volatile void *addr, uint8_t val)
 {
+#if CONFIG(CPU_POWER9)
+	// Set bit to ignore HRMOR
+	addr = (volatile void *)((uint64_t)addr | 0x8000000000000000);
+#endif
    *(volatile uint8_t *)addr = val;
 }

static inline void write16(volatile void *addr, uint16_t val)
 {
+#if CONFIG(CPU_POWER9)
+	// Set bit to ignore HRMOR
+	addr = (volatile void *)((uint64_t)addr | 0x8000000000000000);
+#endif
    *(volatile uint16_t *)addr = val;
 }

static inline void write32(volatile void *addr, uint32_t val)
 {
+#if CONFIG(CPU_POWER9)
+	// Set bit to ignore HRMOR
+	addr = (volatile void *)((uint64_t)addr | 0x8000000000000000);
+#endif
    *(volatile uint32_t *)addr = val;
 }