Merge branch 'master' of ../mmc

[pandora-kernel.git] / arch / powerpc / kernel / prom.c

diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 3a2dc7e..6f73c73 100644 (file)
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -1160,6 +1160,8 @@ static inline void __init phyp_dump_reserve_mem(void) {}
 
 void __init early_init_devtree(void *params)
 {
+       unsigned long limit;
+
        DBG(" -> early_init_devtree(%p)\n", params);
 
        /* Setup flat device-tree pointer */
@@ -1200,7 +1202,19 @@ void __init early_init_devtree(void *params)
        early_reserve_mem();
        phyp_dump_reserve_mem();
 
-       lmb_enforce_memory_limit(memory_limit);
+       limit = memory_limit;
+       if (! limit) {
+               unsigned long memsize;
+
+               /* Ensure that total memory size is page-aligned, because
+                * otherwise mark_bootmem() gets upset. */
+               lmb_analyze();
+               memsize = lmb_phys_mem_size();
+               if ((memsize & PAGE_MASK) != memsize)
+                       limit = memsize & PAGE_MASK;
+       }
+       lmb_enforce_memory_limit(limit);
+
        lmb_analyze();
 
        DBG("Phys. mem: %lx\n", lmb_phys_mem_size());
@@ -1270,6 +1284,37 @@ struct device_node *of_find_node_by_phandle(phandle handle)
 }
 EXPORT_SYMBOL(of_find_node_by_phandle);
 
+/**
+ *     of_find_next_cache_node - Find a node's subsidiary cache
+ *     @np:    node of type "cpu" or "cache"
+ *
+ *     Returns a node pointer with refcount incremented, use
+ *     of_node_put() on it when done.  Caller should hold a reference
+ *     to np.
+ */
+struct device_node *of_find_next_cache_node(struct device_node *np)
+{
+       struct device_node *child;
+       const phandle *handle;
+
+       handle = of_get_property(np, "l2-cache", NULL);
+       if (!handle)
+               handle = of_get_property(np, "next-level-cache", NULL);
+
+       if (handle)
+               return of_find_node_by_phandle(*handle);
+
+       /* OF on pmac has nodes instead of properties named "l2-cache"
+        * beneath CPU nodes.
+        */
+       if (!strcmp(np->type, "cpu"))
+               for_each_child_of_node(np, child)
+                       if (!strcmp(child->type, "cache"))
+                               return child;
+
+       return NULL;
+}
+
 /**
  *     of_find_all_nodes - Get next node in global list
  *     @prev:  Previous node or NULL to start iteration