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PPC: SPAPR: Use KVM function for time info

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One of the things we can't fake on PPC is the timer speed. So
we need to extract the frequency information from the host and
put it back into the guest device tree.

Luckily, we already have functions for that from the non-pseries
targets, so all we need to do is to connect the dots and the guest
suddenly gets to know its real timer speeds.

Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexander Graf 2011-08-09 18:07:13 +02:00
parent f61b4bedaf
commit 0a8b293893
1 changed files with 4 additions and 4 deletions
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8
hw/spapr.c
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@ -140,6 +140,8 @@ static void *spapr_create_fdt_skel(const char *cpu_model,
char *nodename;
uint32_t segs[] = {cpu_to_be32(28), cpu_to_be32(40),
0xffffffff, 0xffffffff};
uint32_t tbfreq = kvm_enabled() ? kvmppc_get_tbfreq() : TIMEBASE_FREQ;
uint32_t cpufreq = kvm_enabled() ? kvmppc_get_clockfreq() : 1000000000;
if (asprintf(&nodename, "%s@%x", modelname, index) < 0) {
fprintf(stderr, "Allocation failure\n");
@ -158,10 +160,8 @@ static void *spapr_create_fdt_skel(const char *cpu_model,
env->dcache_line_size)));
_FDT((fdt_property_cell(fdt, "icache-block-size",
env->icache_line_size)));
_FDT((fdt_property_cell(fdt, "timebase-frequency", TIMEBASE_FREQ)));
/* Hardcode CPU frequency for now. It's kind of arbitrary on
* full emu, for kvm we should copy it from the host */
_FDT((fdt_property_cell(fdt, "clock-frequency", 1000000000)));
_FDT((fdt_property_cell(fdt, "timebase-frequency", tbfreq)));
_FDT((fdt_property_cell(fdt, "clock-frequency", cpufreq)));
_FDT((fdt_property_cell(fdt, "ibm,slb-size", env->slb_nr)));
_FDT((fdt_property(fdt, "ibm,pft-size",
pft_size_prop, sizeof(pft_size_prop))));