From: Alexander Graf <address@hidden>
To: address@hidden
Cc: address@hidden
Subject: [Qemu-ppc] [PATCH v2] PPC: Add clock-frequency export for Mac
machines
Message-ID: <address@hidden>
Support in fwcfg has been around for exposure of the clock-frequency
CPU property. OpenBIOS reads it, we just never exposed it.
Since Mac OS X is very picky about its clock frequency values, let's
just take a known good value and always expose that.
Reported-by: Mark Cave-Ayland <address@hidden>
Signed-off-by: Alexander Graf <address@hidden>
---
v1 -> v2:
- rename fwcfg var to CLOCKFREQ to better reflect what it means
---
hw/ppc/mac_newworld.c | 2 ++
hw/ppc/mac_oldworld.c | 2 ++
include/hw/ppc/ppc.h | 1 +
3 files changed, 5 insertions(+)
diff --git a/hw/ppc/mac_newworld.c b/hw/ppc/mac_newworld.c
index d8e4db3..c6889d1 100644
--- a/hw/ppc/mac_newworld.c
+++ b/hw/ppc/mac_newworld.c
@@ -449,6 +449,8 @@ static void ppc_core99_init(QEMUMachineInitArgs *args)
} else {
fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_TBFREQ, get_ticks_per_sec());
}
+ /* Mac OS X requires a "known good" clock-frequency value; pass it one. */
+ fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_CLOCKFREQ, 266000000);
qemu_register_boot_set(fw_cfg_boot_set, fw_cfg);
}
diff --git a/hw/ppc/mac_oldworld.c b/hw/ppc/mac_oldworld.c
index 3acca94..8faff30 100644
--- a/hw/ppc/mac_oldworld.c
+++ b/hw/ppc/mac_oldworld.c
@@ -333,6 +333,8 @@ static void ppc_heathrow_init(QEMUMachineInitArgs *args)
} else {
fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_TBFREQ, get_ticks_per_sec());
}
+ /* Mac OS X requires a "known good" clock-frequency value; pass it one. */
+ fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_CLOCKFREQ, 266000000);
qemu_register_boot_set(fw_cfg_boot_set, fw_cfg);
}
diff --git a/include/hw/ppc/ppc.h b/include/hw/ppc/ppc.h
index acaf0d6..dfcad25 100644
--- a/include/hw/ppc/ppc.h
+++ b/include/hw/ppc/ppc.h
@@ -87,6 +87,7 @@ enum {
#define FW_CFG_PPC_HEIGHT (FW_CFG_ARCH_LOCAL + 0x01)
#define FW_CFG_PPC_DEPTH (FW_CFG_ARCH_LOCAL + 0x02)
#define FW_CFG_PPC_TBFREQ (FW_CFG_ARCH_LOCAL + 0x03)
+#define FW_CFG_PPC_CLOCKFREQ (FW_CFG_ARCH_LOCAL + 0x04)
#define FW_CFG_PPC_IS_KVM (FW_CFG_ARCH_LOCAL + 0x05)
#define FW_CFG_PPC_KVM_HC (FW_CFG_ARCH_LOCAL + 0x06)
#define FW_CFG_PPC_KVM_PID (FW_CFG_ARCH_LOCAL + 0x07)
--
1.8.1.4
I tried your patch, but didn't see very promising results. Kernel panics take place with Darwin 8. Mac OS 10.2 still stops shortly after the COLOR display text. Did you see any differences when you tried your patch? |