diff options
Diffstat (limited to 'payloads/libpayload/include/arm64/arch/io.h')
| -rw-r--r-- | payloads/libpayload/include/arm64/arch/io.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/payloads/libpayload/include/arm64/arch/io.h b/payloads/libpayload/include/arm64/arch/io.h index f8be1aec95..c177598d86 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 |