| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * Atheros AR71XX/AR724X/AR913X specific prom routines |
| * |
| * Copyright (C) 2015 Laurent Fasnacht <l@libres.ch> |
| * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org> |
| * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/init.h> |
| #include <linux/io.h> |
| #include <linux/string.h> |
| #include <linux/initrd.h> |
| |
| #include <asm/bootinfo.h> |
| #include <asm/addrspace.h> |
| #include <asm/fw/fw.h> |
| |
| #include "common.h" |
| |
| void __init prom_init(void) |
| { |
| fw_init_cmdline(); |
| |
| #ifdef CONFIG_BLK_DEV_INITRD |
| /* Read the initrd address from the firmware environment */ |
| initrd_start = fw_getenvl("initrd_start"); |
| if (initrd_start) { |
| initrd_start = KSEG0ADDR(initrd_start); |
| initrd_end = initrd_start + fw_getenvl("initrd_size"); |
| } |
| #endif |
| } |
| |
| void __init prom_free_prom_memory(void) |
| { |
| /* We do not have to prom memory to free */ |
| } |