1/*
 2 *  Atheros AR71XX/AR724X/AR913X specific prom routines
 3 *
 
 4 *  Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
 5 *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
 6 *
 7 *  This program is free software; you can redistribute it and/or modify it
 8 *  under the terms of the GNU General Public License version 2 as published
 9 *  by the Free Software Foundation.
10 */
11
12#include <linux/kernel.h>
13#include <linux/init.h>
14#include <linux/io.h>
15#include <linux/string.h>
 
16
17#include <asm/bootinfo.h>
18#include <asm/addrspace.h>
 
19
20#include "common.h"
21
22static inline int is_valid_ram_addr(void *addr)
23{
24	if (((u32) addr > KSEG0) &&
25	    ((u32) addr < (KSEG0 + ATH79_MEM_SIZE_MAX)))
26		return 1;
27
28	if (((u32) addr > KSEG1) &&
29	    ((u32) addr < (KSEG1 + ATH79_MEM_SIZE_MAX)))
30		return 1;
31
32	return 0;
33}
34
35static __init void ath79_prom_init_cmdline(int argc, char **argv)
36{
37	int i;
38
39	if (!is_valid_ram_addr(argv))
40		return;
41
42	for (i = 0; i < argc; i++)
43		if (is_valid_ram_addr(argv[i])) {
44			strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
45			strlcat(arcs_cmdline, argv[i], sizeof(arcs_cmdline));
46		}
47}
48
49void __init prom_init(void)
50{
51	ath79_prom_init_cmdline(fw_arg0, (char **)fw_arg1);
 
 
 
 
 
 
 
 
 
52}
53
54void __init prom_free_prom_memory(void)
55{
56	/* We do not have to prom memory to free */
57}

 1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 *  Atheros AR71XX/AR724X/AR913X specific prom routines
 4 *
 5 *  Copyright (C) 2015 Laurent Fasnacht <l@libres.ch>
 6 *  Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
 7 *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
 
 
 
 
 8 */
 9
10#include <linux/kernel.h>
11#include <linux/init.h>
12#include <linux/io.h>
13#include <linux/string.h>
14#include <linux/initrd.h>
15
16#include <asm/bootinfo.h>
17#include <asm/addrspace.h>
18#include <asm/fw/fw.h>
19
20#include "common.h"
21
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
22void __init prom_init(void)
23{
24	fw_init_cmdline();
25
26#ifdef CONFIG_BLK_DEV_INITRD
27	/* Read the initrd address from the firmware environment */
28	initrd_start = fw_getenvl("initrd_start");
29	if (initrd_start) {
30		initrd_start = KSEG0ADDR(initrd_start);
31		initrd_end = initrd_start + fw_getenvl("initrd_size");
32	}
33#endif
34}
35
36void __init prom_free_prom_memory(void)
37{
38	/* We do not have to prom memory to free */
39}