diff options
| author | Breno Leitao <brenohl@br.ibm.com> | 2011-09-28 16:53:16 +0000 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2011-10-06 09:48:09 +0200 |
| commit | ac26f8c3891dde7a3fc7f24a3a87905df843d905 (patch) | |
| tree | 094e85b6026005b5df614a9921089fd15432e84c | |
| parent | e6c866d417d1a09536f489e66c21cf49b7ec60b6 (diff) | |
pseries: Implement set-time-of-day RTAS function
Currently there is no implementation for set-time-of-day rtas function,
which causes the following warning "setting the clock failed (-1)" on
the guest.
This patch just creates this function, get the timedate diff and store in
the papr environment, so that the correct value will be returned by
get-time-of-day.
In order to try it, just adjust the hardware time, run hwclock --systohc,
so that, on when the system runs hwclock --hctosys, the value is correctly
adjusted, i.e. the host time plus the timediff.
Signed-off-by: Breno Leitao <brenohl@br.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
| -rw-r--r-- | hw/spapr.h | 1 | ||||
| -rw-r--r-- | hw/spapr_rtas.c | 24 |
2 files changed, 24 insertions, 1 deletions
diff --git a/hw/spapr.h b/hw/spapr.h index ec910de5b0..6657c336f6 100644 --- a/hw/spapr.h +++ b/hw/spapr.h @@ -18,6 +18,7 @@ typedef struct sPAPREnvironment { void *fdt_skel; target_ulong entry_point; int next_irq; + int rtc_offset; } sPAPREnvironment; #define H_SUCCESS 0 diff --git a/hw/spapr_rtas.c b/hw/spapr_rtas.c index 00c8ce5a15..d1ac74cfbd 100644 --- a/hw/spapr_rtas.c +++ b/hw/spapr_rtas.c @@ -67,7 +67,7 @@ static void rtas_get_time_of_day(sPAPREnvironment *spapr, return; } - qemu_get_timedate(&tm, 0); + qemu_get_timedate(&tm, spapr->rtc_offset); rtas_st(rets, 0, 0); /* Success */ rtas_st(rets, 1, tm.tm_year + 1900); @@ -79,6 +79,27 @@ static void rtas_get_time_of_day(sPAPREnvironment *spapr, rtas_st(rets, 7, 0); /* we don't do nanoseconds */ } +static void rtas_set_time_of_day(sPAPREnvironment *spapr, + uint32_t token, uint32_t nargs, + target_ulong args, + uint32_t nret, target_ulong rets) +{ + struct tm tm; + + tm.tm_year = rtas_ld(args, 0) - 1900; + tm.tm_mon = rtas_ld(args, 1) - 1; + tm.tm_mday = rtas_ld(args, 2); + tm.tm_hour = rtas_ld(args, 3); + tm.tm_min = rtas_ld(args, 4); + tm.tm_sec = rtas_ld(args, 5); + + /* Just generate a monitor event for the change */ + rtc_change_mon_event(&tm); + spapr->rtc_offset = qemu_timedate_diff(&tm); + + rtas_st(rets, 0, 0); /* Success */ +} + static void rtas_power_off(sPAPREnvironment *spapr, uint32_t token, uint32_t nargs, target_ulong args, uint32_t nret, target_ulong rets) @@ -271,6 +292,7 @@ static void register_core_rtas(void) { spapr_rtas_register("display-character", rtas_display_character); spapr_rtas_register("get-time-of-day", rtas_get_time_of_day); + spapr_rtas_register("set-time-of-day", rtas_set_time_of_day); spapr_rtas_register("power-off", rtas_power_off); spapr_rtas_register("query-cpu-stopped-state", rtas_query_cpu_stopped_state); |