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arm: dcc: Add uart dcc support for armv8 

Added UART DCC support for armv8

Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Siva Durga Prasad Paladugu 2015-05-29 09:54:37 +02:00 committed by Albert ARIBAUD
parent b69969be5d
commit e05412f5ec
1 changed files with 16 additions and 0 deletions
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16
drivers/serial/arm_dcc.c
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@ -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)