diff options
| author | Glenn Washburn <development@efficientek.com> | 2022-01-31 11:15:04 -0600 |
|---|---|---|
| committer | Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> | 2022-02-08 21:26:31 +0000 |
| commit | 1aa242105af219082ccb0ceefc0e460d9d59ea6c (patch) | |
| tree | 587033e128acbdd9db9c393336bd1baf3f27e744 | |
| parent | e2d6176ce9ea1a09453f42d7e8eaf24b5ee4cede (diff) | |
| download | qemu-openbios-1aa242105af219082ccb0ceefc0e460d9d59ea6c.tar.gz | |
ppc: fix ciface_milliseconds using incorrect frequency for delay
Instead of using a constant frequency for all CPUs, use the processor timebase
frequency provided by QEMU. This fixes issues where delays from
ciface_milliseconds were not corresponding to elapsed time as given by the real
time clock on certain platforms, eg. QEMU's mac99 machine.
Signed-off-by: Glenn Washburn <development@efficientek.com>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
| -rw-r--r-- | arch/ppc/qemu/methods.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/ppc/qemu/methods.c b/arch/ppc/qemu/methods.c index 930b47c4..a423b9fa 100644 --- a/arch/ppc/qemu/methods.c +++ b/arch/ppc/qemu/methods.c @@ -126,7 +126,8 @@ ciface_quiesce( unsigned long args[], unsigned long ret[] ) } /* ( -- ms ) */ -#define TIMER_FREQUENCY 16600000ULL +/* From drivers/timer.c */ +extern unsigned long timer_freq; static void ciface_milliseconds( unsigned long args[], unsigned long ret[] ) @@ -146,7 +147,7 @@ ciface_milliseconds( unsigned long args[], unsigned long ret[] ) : "cc"); ticks = (((unsigned long long)tbu) << 32) | (unsigned long long)tbl; - msecs = (1000 * ticks) / TIMER_FREQUENCY; + msecs = (1000 * ticks) / timer_freq; PUSH( msecs ); } |