| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Atheros AR71XX/AR724X/AR913X specific prom routines |
| 3 | * |
| 4 | * Copyright (C) 2015 Laurent Fasnacht <l@libres.ch> |
| 5 | * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org> |
| 6 | * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify it |
| 9 | * under the terms of the GNU General Public License version 2 as published |
| 10 | * by the Free Software Foundation. |
| 11 | */ |
| 12 | |
| 13 | #include <linux/kernel.h> |
| 14 | #include <linux/init.h> |
| 15 | #include <linux/io.h> |
| 16 | #include <linux/string.h> |
| 17 | #include <linux/initrd.h> |
| 18 | |
| 19 | #include <asm/bootinfo.h> |
| 20 | #include <asm/addrspace.h> |
| 21 | #include <asm/fw/fw.h> |
| 22 | |
| 23 | #include "common.h" |
| 24 | |
| 25 | void __init prom_init(void) |
| 26 | { |
| 27 | fw_init_cmdline(); |
| 28 | |
| 29 | #ifdef CONFIG_BLK_DEV_INITRD |
| 30 | /* Read the initrd address from the firmware environment */ |
| 31 | initrd_start = fw_getenvl("initrd_start"); |
| 32 | if (initrd_start) { |
| 33 | initrd_start = KSEG0ADDR(initrd_start); |
| 34 | initrd_end = initrd_start + fw_getenvl("initrd_size"); |
| 35 | } |
| 36 | #endif |
| 37 | } |
| 38 | |
| 39 | void __init prom_free_prom_memory(void) |
| 40 | { |
| 41 | /* We do not have to prom memory to free */ |
| 42 | } |