| 1 |
|
| 2 | |
| 3 |
|
| 4 |
|
| 5 | #include <asm/barrier.h>
|
| 6 |
|
| 7 | static inline u32 __dcc_getstatus(void)
|
| 8 | {
|
| 9 | u32 __ret;
|
| 10 | asm volatile("mrc p14, 0, %0, c0, c1, 0 @ read comms ctrl reg"
|
| 11 | : "=r" (__ret) : : "cc");
|
| 12 |
|
| 13 | return __ret;
|
| 14 | }
|
| 15 |
|
| 16 | static inline char __dcc_getchar(void)
|
| 17 | {
|
| 18 | char __c;
|
| 19 |
|
| 20 | asm volatile("mrc p14, 0, %0, c0, c5, 0 @ read comms data reg"
|
| 21 | : "=r" (__c));
|
| 22 | isb();
|
| 23 |
|
| 24 | return __c;
|
| 25 | }
|
| 26 |
|
| 27 | static inline void __dcc_putchar(char c)
|
| 28 | {
|
| 29 | asm volatile("mcr p14, 0, %0, c0, c5, 0 @ write a char"
|
| 30 | :
|
| 31 | : "r" (c));
|
| 32 | isb();
|
| 33 | }
|