1 files changed, 23 insertions, 0 deletions

diff --git a/arch/mips/netlogic/xlp/setup.c b/arch/mips/netlogic/xlp/setup.c
index 7b638f7be491..7718368e4598 100644
--- a/arch/mips/netlogic/xlp/setup.c
+++ b/arch/mips/netlogic/xlp/setup.c
@@ -73,6 +73,23 @@ static void nlm_fixup_mem(void)
         }
 }
 
+static void __init xlp_init_mem_from_bars(void)
+{
+        uint64_t map[16];
+        int i, n;
+
+        n = xlp_get_dram_map(-1, map);  /* -1: info for all nodes */
+        for (i = 0; i < n; i += 2) {
+                /* exclude 0x1000_0000-0x2000_0000, u-boot device */
+                if (map[i] <= 0x10000000 && map[i+1] > 0x10000000)
+                        map[i+1] = 0x10000000;
+                if (map[i] > 0x10000000 && map[i] < 0x20000000)
+                        map[i] = 0x20000000;
+
+                add_memory_region(map[i], map[i+1] - map[i], BOOT_MEM_RAM);
+        }
+}
+
 void __init plat_mem_setup(void)
 {
         panic_timeout   = 5;
@@ -82,6 +99,12 @@ void __init plat_mem_setup(void)
 
         /* memory and bootargs from DT */
         early_init_devtree(initial_boot_params);
+
+        if (boot_mem_map.nr_map == 0) {
+                pr_info("Using DRAM BARs for memory map.\n");
+                xlp_init_mem_from_bars();
+        }
+        /* Calculate and setup wired entries for mapped kernel */
         nlm_fixup_mem();
 }