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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(unsigned long start,unsigned long end)36 void __init early_init_dt_setup_initrd_arch(unsigned long start,
37 		unsigned long end)
38 {
39 	initrd_start = (unsigned long)__va(start);
40 	initrd_end = (unsigned long)__va(end);
41 	initrd_below_start_ok = 1;
42 }
43 #endif
44 
early_init_dt_add_memory_arch(u64 base,u64 size)45 void __init early_init_dt_add_memory_arch(u64 base, u64 size)
46 {
47 	c6x_add_memory(base, size);
48 }
49 
early_init_dt_alloc_memory_arch(u64 size,u64 align)50 void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align)
51 {
52 	return __va(memblock_alloc(size, align));
53 }
54