| 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 | |
| 22 | void __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 |