ralink: honour memory@0 node

Signed-off-by: John Crispin <blogic@openwrt.org>
SVN-Revision: 39234

diff --git a/target/linux/ramips/patches-3.10/999-memory-detect.patch b/target/linux/ramips/patches-3.10/999-memory-detect.patch
new file mode 100644 (file)
index 0000000..2e857fb
--- /dev/null
+++ b/target/linux/ramips/patches-3.10/999-memory-detect.patch
@@ -0,0 +1,34 @@
+Index: linux-3.10.26/arch/mips/ralink/of.c
+===================================================================
+--- linux-3.10.26.orig/arch/mips/ralink/of.c   2014-01-12 11:49:40.292069849 +0100
++++ linux-3.10.26/arch/mips/ralink/of.c        2014-01-12 12:38:01.236138974 +0100
+@@ -80,6 +80,16 @@
+ }
+ 
+ extern struct boot_param_header __image_dtb;
++static int memory_dtb;
++
++static int __init early_init_dt_find_memory(unsigned long node, const char *uname,
++                                   int depth, void *data)
++{
++      if (depth == 1 && !strcmp(uname, "memory@0"))
++              memory_dtb = 1;
++
++      return 0;
++}
+ 
+ void __init plat_mem_setup(void)
+ {
+@@ -90,8 +100,10 @@
+        * parsed resulting in our memory appearing
+        */
+       __dt_setup_arch(&__image_dtb);
+-
+-      if (soc_info.mem_size)
++      of_scan_flat_dt(early_init_dt_find_memory, NULL);
++      if (memory_dtb)
++              of_scan_flat_dt(early_init_dt_scan_memory, NULL);
++      else if (soc_info.mem_size)
+               add_memory_region(soc_info.mem_base, soc_info.mem_size * SZ_1M,
+                                 BOOT_MEM_RAM);
+       else