From 60f5328c7d4991d3fe9e4c0243f89f49e231f856 Mon Sep 17 00:00:00 2001 From: Patrick Georgi Date: Fri, 29 Jan 2021 14:08:48 +0100 Subject: libpayload/arm*: Add 64bit memory access primitives Add read64 and write64 for consistency with x86. BUG=b:178785769 Change-Id: I342e3a23201d0b804ea5ecfe47ee3e4bb516de4c Signed-off-by: Patrick Georgi Reviewed-on: https://review.coreboot.org/c/coreboot/+/50115 Tested-by: build bot (Jenkins) Reviewed-by: Julius Werner --- payloads/libpayload/include/arm/arch/io.h | 13 +++++++++++++ payloads/libpayload/include/arm64/arch/io.h | 13 +++++++++++++ 2 files changed, 26 insertions(+) (limited to 'payloads') diff --git a/payloads/libpayload/include/arm/arch/io.h b/payloads/libpayload/include/arm/arch/io.h index 6d549dedd1..ce48baf72e 100644 --- a/payloads/libpayload/include/arm/arch/io.h +++ b/payloads/libpayload/include/arm/arch/io.h @@ -98,6 +98,12 @@ static inline uint32_t read32(const void *addr) return *(volatile uint32_t *)addr; } +static inline uint64_t read64(const void *addr) +{ + dmb(); + return *(volatile uint64_t *)addr; +} + static inline void write8(void *addr, uint8_t val) { dmb(); @@ -119,4 +125,11 @@ static inline void write32(void *addr, uint32_t val) dmb(); } +static inline void write64(void *addr, uint64_t val) +{ + dmb(); + *(volatile uint64_t *)addr = val; + dmb(); +} + #endif diff --git a/payloads/libpayload/include/arm64/arch/io.h b/payloads/libpayload/include/arm64/arch/io.h index 00c75c4395..092198842f 100644 --- a/payloads/libpayload/include/arm64/arch/io.h +++ b/payloads/libpayload/include/arm64/arch/io.h @@ -99,6 +99,12 @@ static inline uint32_t read32(const void *addr) return *(volatile uint32_t *)addr; } +static inline uint64_t read64(const void *addr) +{ + dmb(); + return *(volatile uint64_t *)addr; +} + static inline void write8(void *addr, uint8_t val) { dmb(); @@ -120,4 +126,11 @@ static inline void write32(void *addr, uint32_t val) dmb(); } +static inline void write64(void *addr, uint64_t val) +{ + dmb(); + *(volatile uint64_t *)addr = val; + dmb(); +} + #endif -- cgit v1.2.3