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| author | Tom Rini <trini@konsulko.com> | 2015-04-24 13:43:24 -0400 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2015-04-24 13:43:24 -0400 |
| commit | 3f6dcdb9cd4dbda226a1474f1e9398413e906b41 (patch) | |
| tree | fb3a7d7873e9c14a3733197e4cc028ce90827970 /arch/arm/cpu/armv8/generic_timer.c | |
| parent | d8c1d5d5fb6eafbc532982125f006e49f2c40e71 (diff) | |
| parent | ab10d73d2fc13bd5baf5024e54ad92641d238bdb (diff) | |
Merge branch 'master' of git://git.denx.de/u-boot-fsl-qoriq
Diffstat (limited to 'arch/arm/cpu/armv8/generic_timer.c')
| -rw-r--r-- | arch/arm/cpu/armv8/generic_timer.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv8/generic_timer.c b/arch/arm/cpu/armv8/generic_timer.c index 223b95e210e..8e60baebc53 100644 --- a/arch/arm/cpu/armv8/generic_timer.c +++ b/arch/arm/cpu/armv8/generic_timer.c @@ -25,7 +25,18 @@ unsigned long get_tbclk(void) unsigned long timer_read_counter(void) { unsigned long cntpct; +#ifdef CONFIG_SYS_FSL_ERRATUM_A008585 + /* This erratum number needs to be confirmed to match ARM document */ + unsigned long temp; +#endif isb(); asm volatile("mrs %0, cntpct_el0" : "=r" (cntpct)); +#ifdef CONFIG_SYS_FSL_ERRATUM_A008585 + asm volatile("mrs %0, cntpct_el0" : "=r" (temp)); + while (temp != cntpct) { + asm volatile("mrs %0, cntpct_el0" : "=r" (cntpct)); + asm volatile("mrs %0, cntpct_el0" : "=r" (temp)); + } +#endif return cntpct; } |