1 files changed, 13 insertions, 2 deletions

diff --git a/arch/powerpc/platforms/iseries/dt.c b/arch/powerpc/platforms/iseries/dt.c
index e305deee7f44..9e8a334a518a 100644
--- a/arch/powerpc/platforms/iseries/dt.c
+++ b/arch/powerpc/platforms/iseries/dt.c
@@ -41,6 +41,7 @@
 #include "call_pci.h"
 #include "pci.h"
 #include "it_exp_vpd_panel.h"
+#include "naca.h"
 
 #ifdef DEBUG
 #define DBG(fmt...) udbg_printf(fmt)
@@ -205,13 +206,11 @@ static void __init dt_prop_u32(struct iseries_flat_dt *dt, const char *name,
         dt_prop(dt, name, &data, sizeof(u32));
 }
 
-#ifdef notyet
 static void __init dt_prop_u64(struct iseries_flat_dt *dt, const char *name,
                 u64 data)
 {
         dt_prop(dt, name, &data, sizeof(u64));
 }
-#endif
 
 static void __init dt_prop_u64_list(struct iseries_flat_dt *dt,
                 const char *name, u64 *data, int n)
@@ -306,6 +305,17 @@ static void __init dt_model(struct iseries_flat_dt *dt)
         dt_prop_u32(dt, "ibm,partition-no", HvLpConfig_getLpIndex());
 }
 
+static void __init dt_initrd(struct iseries_flat_dt *dt)
+{
+#ifdef CONFIG_BLK_DEV_INITRD
+        if (naca.xRamDisk) {
+                dt_prop_u64(dt, "linux,initrd-start", (u64)naca.xRamDisk);
+                dt_prop_u64(dt, "linux,initrd-end",
+                        (u64)naca.xRamDisk + naca.xRamDiskSize * HW_PAGE_SIZE);
+        }
+#endif
+}
+
 static void __init dt_do_vdevice(struct iseries_flat_dt *dt,
                 const char *name, u32 reg, int unit,
                 const char *type, const char *compat, int end)
@@ -641,6 +651,7 @@ void * __init build_flat_dt(unsigned long phys_mem_size)
         /* /chosen */
         dt_start_node(iseries_dt, "chosen");
         dt_prop_str(iseries_dt, "bootargs", cmd_line);
+        dt_initrd(iseries_dt);
         dt_end_node(iseries_dt);
 
         dt_cpus(iseries_dt);