1 /*
2 * Architecture specific OF callbacks.
3 *
4 * Copyright (C) 2011 Texas Instruments Incorporated
5 * Author: Mark Salter <msalter@redhat.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 *
11 */
12 #include <linux/init.h>
13 #include <linux/of.h>
14 #include <linux/of_fdt.h>
15 #include <linux/initrd.h>
16 #include <linux/memblock.h>
17
early_init_devtree(void * params)18 void __init early_init_devtree(void *params)
19 {
20 /* Setup flat device-tree pointer */
21 initial_boot_params = params;
22
23 /* Retrieve various informations from the /chosen node of the
24 * device-tree, including the platform type, initrd location and
25 * size and more ...
26 */
27 of_scan_flat_dt(early_init_dt_scan_chosen, c6x_command_line);
28
29 /* Scan memory nodes and rebuild MEMBLOCKs */
30 of_scan_flat_dt(early_init_dt_scan_root, NULL);
31 of_scan_flat_dt(early_init_dt_scan_memory, NULL);
32 }
33
34
35 #ifdef CONFIG_BLK_DEV_INITRD
early_init_dt_setup_initrd_arch(u64 start,u64 end)36 void __init early_init_dt_setup_initrd_arch(u64 start, u64 end)
37 {
38 initrd_start = (unsigned long)__va(start);
39 initrd_end = (unsigned long)__va(end);
40 initrd_below_start_ok = 1;
41 }
42 #endif
43
early_init_dt_add_memory_arch(u64 base,u64 size)44 void __init early_init_dt_add_memory_arch(u64 base, u64 size)
45 {
46 c6x_add_memory(base, size);
47 }
48
early_init_dt_alloc_memory_arch(u64 size,u64 align)49 void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align)
50 {
51 return __va(memblock_alloc(size, align));
52 }
53