2 * Copyright (C) 2012 Synopsys, Inc. (www.synopsys.com)
4 * Based on reduced version of METAG
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
12 #include <linux/init.h>
13 #include <linux/reboot.h>
14 #include <linux/memblock.h>
16 #include <linux/of_fdt.h>
19 #include <asm/mach_desc.h>
21 static const void * __init arch_get_next_mach(const char *const **match)
23 static const struct machine_desc *mdesc = __arch_info_begin;
24 const struct machine_desc *m = mdesc;
26 if (m >= __arch_info_end)
30 *match = m->dt_compat;
35 * setup_machine_fdt - Machine setup when an dtb was passed to the kernel
36 * @dt: virtual address pointer to dt blob
38 * If a dtb was passed to the kernel, then use it to choose the correct
39 * machine_desc and to setup the system.
41 const struct machine_desc * __init setup_machine_fdt(void *dt)
43 const struct machine_desc *mdesc;
44 unsigned long dt_root;
48 if (!early_init_dt_scan(dt))
51 mdesc = of_flat_dt_match_machine(NULL, arch_get_next_mach);
55 dt_root = of_get_flat_dt_root();
56 clk = of_get_flat_dt_prop(dt_root, "clock-frequency", &len);
58 arc_set_core_freq(of_read_ulong(clk, len/4));