1 // SPDX-License-Identifier: GPL-2.0-only <<
2 /* 1 /*
3 * Atheros AR71XX/AR724X/AR913X specific prom 2 * Atheros AR71XX/AR724X/AR913X specific prom routines
4 * 3 *
5 * Copyright (C) 2015 Laurent Fasnacht <l@lib <<
6 * Copyright (C) 2008-2010 Gabor Juhos <juhos 4 * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
7 * Copyright (C) 2008 Imre Kaloz <kaloz@openw 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.
8 */ 10 */
9 11
10 #include <linux/kernel.h> 12 #include <linux/kernel.h>
11 #include <linux/init.h> 13 #include <linux/init.h>
12 #include <linux/io.h> 14 #include <linux/io.h>
13 #include <linux/string.h> 15 #include <linux/string.h>
14 #include <linux/initrd.h> <<
15 16
16 #include <asm/bootinfo.h> 17 #include <asm/bootinfo.h>
17 #include <asm/addrspace.h> 18 #include <asm/addrspace.h>
18 #include <asm/fw/fw.h> <<
19 19
20 #include "common.h" 20 #include "common.h"
21 21
>> 22 static 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
>> 35 static __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
22 void __init prom_init(void) 49 void __init prom_init(void)
23 { 50 {
24 fw_init_cmdline(); !! 51 ath79_prom_init_cmdline(fw_arg0, (char **)fw_arg1);
>> 52 }
25 53
26 #ifdef CONFIG_BLK_DEV_INITRD !! 54 void __init prom_free_prom_memory(void)
27 /* Read the initrd address from the fi !! 55 {
28 initrd_start = fw_getenvl("initrd_star !! 56 /* We do not have to prom memory to free */
29 if (initrd_start) { <<
30 initrd_start = KSEG0ADDR(initr <<
31 initrd_end = initrd_start + fw <<
32 } <<
33 #endif <<
34 } 57 }
35 58
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