From: Siva Durga Prasad Paladugu <[email protected]> Added UART DCC support for armv8
Signed-off-by: Siva Durga Prasad Paladugu <[email protected]> Signed-off-by: Michal Simek <[email protected]> --- Not sure if CONFIG_CPU_ARMV8 is the right symbol but we are following pattern above. Maybe CONFIG_ARM64? --- drivers/serial/arm_dcc.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/serial/arm_dcc.c b/drivers/serial/arm_dcc.c index e77773740fb0..df7eb05e8246 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) -- 2.3.5 _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
