| Gabor Juhos | d4a67d9 | 2011-01-04 21:28:14 +0100 | [diff] [blame] | 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 | |
| 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 | |
| 49 | void __init prom_init(void) |
| 50 | { |
| 51 | ath79_prom_init_cmdline(fw_arg0, (char **)fw_arg1); |
| 52 | } |
| 53 | |
| 54 | void __init prom_free_prom_memory(void) |
| 55 | { |
| 56 | /* We do not have to prom memory to free */ |
| 57 | } |