[PULL,56/62] ppc/pnv: add a "ibm, opal/power-mgt" device tree node on POWER9

Commit Message

David Gibson March 12, 2019, 8:54 a.m. UTC

From: Cédric Le Goater <[e-mail]>

Activate only stop0 and stop1 levels. We should not need more levels
when under QEMU.

Signed-off-by: Cédric Le Goater <[e-mail]>
Message-Id: <[e-mail]>
Signed-off-by: David Gibson <[e-mail]>
---
 hw/ppc/pnv.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

Patch

diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index e68d419203..8be4d4cbf7 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -438,6 +438,16 @@  static void pnv_dt_isa(PnvMachineState *pnv, void *fdt)
                        &args);
 }
 
+static void pnv_dt_power_mgt(void *fdt)
+{
+    int off;
+
+    off = fdt_add_subnode(fdt, 0, "ibm,opal");
+    off = fdt_add_subnode(fdt, off, "power-mgt");
+
+    _FDT(fdt_setprop_cell(fdt, off, "ibm,enabled-stop-levels", 0xc0000000));
+}
+
 static void *pnv_dt_create(MachineState *machine)
 {
     const char plat_compat[] = "qemu,powernv\0ibm,powernv";
@@ -493,6 +503,11 @@  static void *pnv_dt_create(MachineState *machine)
         pnv_dt_bmc_sensors(pnv->bmc, fdt);
     }
 
+    /* Create an extra node for power management on Power9 */
+    if (pnv_is_power9(pnv)) {
+        pnv_dt_power_mgt(fdt);
+    }
+
     return fdt;
 }