diff options
| -rw-r--r-- | src/arch/ppc64/include/arch/io.h | 38 |
1 files changed, 35 insertions, 3 deletions
diff --git a/src/arch/ppc64/include/arch/io.h b/src/arch/ppc64/include/arch/io.h index f8c1121f1a..132a5ce353 100644 --- a/src/arch/ppc64/include/arch/io.h +++ b/src/arch/ppc64/include/arch/io.h @@ -5,31 +5,63 @@ #include <stdint.h> +/* Set MSB to 1 to ignore HRMOR */ +#define MMIO_GROUP0_CHIP0_LPC_BASE_ADDR 0x8006030000000000 +#define LPCHC_IO_SPACE 0xD0010000 +#define LPC_BASE_ADDR (MMIO_GROUP0_CHIP0_LPC_BASE_ADDR + LPCHC_IO_SPACE) + +/* Enforce In-order Execution of I/O */ +static inline void eieio(void) +{ + asm volatile("eieio" ::: "memory"); +} + static inline void outb(uint8_t value, uint16_t port) { + asm volatile("stbcix %0, %1, %2" :: "r"(value), "b"(LPC_BASE_ADDR), "r"(port)); + eieio(); } static inline void outw(uint16_t value, uint16_t port) { + asm volatile("sthcix %0, %1, %2" :: "r"(value), "b"(LPC_BASE_ADDR), "r"(port)); + eieio(); } static inline void outl(uint32_t value, uint16_t port) { + asm volatile("stwcix %0, %1, %2" :: "r"(value), "b"(LPC_BASE_ADDR), "r"(port)); + eieio(); } static inline uint8_t inb(uint16_t port) { - return 0; + uint8_t buffer; + asm volatile("lbzcix %0, %1, %2" : "=r"(buffer) : "b"(LPC_BASE_ADDR), "r"(port)); + eieio(); + return buffer; } static inline uint16_t inw(uint16_t port) { - return 0; + uint16_t buffer; + asm volatile("lhzcix %0, %1, %2" : "=r"(buffer) : "b"(LPC_BASE_ADDR), "r"(port)); + eieio(); + return buffer; } static inline uint32_t inl(uint16_t port) { - return 0; + uint32_t buffer; + asm volatile("lwzcix %0, %1, %2" : "=r"(buffer) : "b"(LPC_BASE_ADDR), "r"(port)); + eieio(); + return buffer; +} + +static inline void report_istep(uint8_t step, uint8_t substep) +{ + outb(step, 0x81); + outb(substep, 0x82); } #endif |