The GUTS device is used by system software to find out about hardware
details of the current system.
We only emulate the bare minimum to be able to reboot a guest which is
not sufficient to make u-boot happy.
Add a few more registers to our portfolio with dummy values.
Signed-off-by: Alexander Graf <ag...@suse.de>
---
hw/ppc/mpc8544_guts.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/hw/ppc/mpc8544_guts.c b/hw/ppc/mpc8544_guts.c
index a10abe9..af8c742 100644
--- a/hw/ppc/mpc8544_guts.c
+++ b/hw/ppc/mpc8544_guts.c
@@ -25,6 +25,8 @@
#define MPC8544_GUTS_RSTCR_RESET 0x02
#define MPC8544_GUTS_ADDR_PORPLLSR 0x00
+#define PORPLLSR_SYS_RATIO_MAX 0x3e
+#define PORPLLSR_CPU0_RATIO_MAX (0x3f << 16)
#define MPC8544_GUTS_ADDR_PORBMSR 0x04
#define MPC8544_GUTS_ADDR_PORIMPSCR 0x08
#define MPC8544_GUTS_ADDR_PORDEVSR 0x0C
@@ -36,6 +38,7 @@
#define MPC8544_GUTS_ADDR_GPINDR 0x50
#define MPC8544_GUTS_ADDR_PMUXCR 0x60
#define MPC8544_GUTS_ADDR_DEVDISR 0x70
+#define DEVDISR_DISABLED_NONE 0x0
#define MPC8544_GUTS_ADDR_POWMGTCSR 0x80
#define MPC8544_GUTS_ADDR_MCPSUMR 0x90
#define MPC8544_GUTS_ADDR_RSTRSCR 0x94
@@ -73,6 +76,15 @@ static uint64_t mpc8544_guts_read(void *opaque, hwaddr addr,
addr &= MPC8544_GUTS_MMIO_SIZE - 1;
switch (addr) {
+ case MPC8544_GUTS_ADDR_PORPLLSR:
+ value = PORPLLSR_SYS_RATIO_MAX | PORPLLSR_CPU0_RATIO_MAX;
+ break;
+ case MPC8544_GUTS_ADDR_PORDEVSR:
+ value = 0;
+ break;
+ case MPC8544_GUTS_ADDR_DEVDISR:
+ value = DEVDISR_DISABLED_NONE;
+ break;
case MPC8544_GUTS_ADDR_PVR:
value = env->spr[SPR_PVR];
break;
--
1.8.1.4
