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| author | Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com> | 2015-05-29 09:54:37 +0200 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2015-07-07 11:39:39 +0200 |
| commit | e05412f5ec27a07df92efa5cad47acd1c7fbea08 (patch) | |
| tree | 46ce758cf332f1d7a9feb7755df2d59c54873510 | |
| parent | b69969be5d509c50165d6b21ac6fca469732e049 (diff) | |
| download | u-boot-imx-e05412f5ec27a07df92efa5cad47acd1c7fbea08.zip u-boot-imx-e05412f5ec27a07df92efa5cad47acd1c7fbea08.tar.gz u-boot-imx-e05412f5ec27a07df92efa5cad47acd1c7fbea08.tar.bz2 | |
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>
| -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 e777737..df7eb05 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) |