arc: use early_init_dt_scan

Convert arc to use new early_init_dt_scan function.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Vineet Gupta <vgupta@synopsys.com>

diff --git a/arch/arc/kernel/devtree.c b/arch/arc/kernel/devtree.c
index eeb613a..1ab6f35 100644 (file)
--- a/arch/arc/kernel/devtree.c
+++ b/arch/arc/kernel/devtree.c
@@ -27,7 +27,6 @@
  */
 struct machine_desc * __init setup_machine_fdt(void *dt)
 {
-       struct boot_param_header *devtree = dt;
        struct machine_desc *mdesc = NULL, *mdesc_best = NULL;
        unsigned int score, mdesc_score = ~1;
        unsigned long dt_root;
@@ -36,11 +35,9 @@ struct machine_desc * __init setup_machine_fdt(void *dt)
        char manufacturer[16];
        unsigned long len;
 
-       /* check device tree validity */
-       if (be32_to_cpu(devtree->magic) != OF_DT_HEADER)
+       if (!early_init_dt_scan(dt))
                return NULL;
 
-       initial_boot_params = devtree;
        dt_root = of_get_flat_dt_root();
 
        /*
@@ -85,15 +82,6 @@ struct machine_desc * __init setup_machine_fdt(void *dt)
 
        pr_info("Board \"%s\" from %s (Manufacturer)\n", model, manufacturer);
 
-       /* Retrieve various information from the /chosen node */
-       of_scan_flat_dt(early_init_dt_scan_chosen, boot_command_line);
-
-       /* Initialize {size,address}-cells info */
-       of_scan_flat_dt(early_init_dt_scan_root, NULL);
-
-       /* Setup memory, calling early_init_dt_add_memory_arch */
-       of_scan_flat_dt(early_init_dt_scan_memory, NULL);
-
        clk = of_get_flat_dt_prop(dt_root, "clock-frequency", &len);
        if (clk)
                arc_set_core_freq(of_read_ulong(clk, len/4));