diff options
| -rw-r--r-- | drivers/serial/arm_dcc.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/serial/arm_dcc.c b/drivers/serial/arm_dcc.c index e77773740f..df7eb05e82 100644 --- a/drivers/serial/arm_dcc.c +++ b/drivers/serial/arm_dcc.c @@ -61,6 +61,22 @@ #define status_dcc(x) \ __asm__ volatile ("mrc p14, 0, %0, c14, c0, 0\n" : "=r" (x)) +#elif defined(CONFIG_CPU_ARMV8) +/* + * ARMV8 + */ +#define DCC_RBIT (1 << 30) +#define DCC_WBIT (1 << 29) + +#define write_dcc(x) \ + __asm__ volatile ("msr dbgdtrtx_el0, %0\n" : : "r" (x)) + +#define read_dcc(x) \ + __asm__ volatile ("mrs %0, dbgdtrrx_el0\n" : "=r" (x)) + +#define status_dcc(x) \ + __asm__ volatile ("mrs %0, mdccsr_el0\n" : "=r" (x)) + #else #define DCC_RBIT (1 << 0) #define DCC_WBIT (1 << 1) |