PPC: Mac: Move tbfreq into local variable

We already expose the real CPU's tb frequency to the guest via fw_cfg. Soon
we will need to also expose it to the MacIO, so let's move it to a variable
that we can leverage every time we need the frequency.

Signed-off-by: Alexander Graf <agraf@suse.de>

1 files changed, 9 insertions, 3 deletions

diff --git a/hw/ppc/mac_oldworld.c b/hw/ppc/mac_oldworld.c
index ec7ed38343..863dd2fc3a 100644
--- a/hw/ppc/mac_oldworld.c
+++ b/hw/ppc/mac_oldworld.c
@@ -103,6 +103,7 @@ static void ppc_heathrow_init(MachineState *machine)
     uint16_t ppc_boot_device;
     DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
     void *fw_cfg;
+    uint64_t tbfreq;
 
     linux_boot = (kernel_filename != NULL);
 
@@ -250,6 +251,13 @@ static void ppc_heathrow_init(MachineState *machine)
         }
     }
 
+    /* Timebase Frequency */
+    if (kvm_enabled()) {
+        tbfreq = kvmppc_get_tbfreq();
+    } else {
+        tbfreq = TBFREQ;
+    }
+
     /* init basic PC hardware */
     if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) {
         hw_error("Only 6xx bus is supported on heathrow machine\n");
@@ -330,15 +338,13 @@ static void ppc_heathrow_init(MachineState *machine)
 #ifdef CONFIG_KVM
         uint8_t *hypercall;
 
-        fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_TBFREQ, kvmppc_get_tbfreq());
         hypercall = g_malloc(16);
         kvmppc_get_hypercall(env, hypercall, 16);
         fw_cfg_add_bytes(fw_cfg, FW_CFG_PPC_KVM_HC, hypercall, 16);
         fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_KVM_PID, getpid());
 #endif
-    } else {
-        fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_TBFREQ, TBFREQ);
     }
+    fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_TBFREQ, tbfreq);
     /* Mac OS X requires a "known good" clock-frequency value; pass it one. */
     fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_CLOCKFREQ, CLOCKFREQ);
     fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_BUSFREQ, BUSFREQ);