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Diffstat (limited to 'arch/mips/ath79/prom.c')
| -rw-r--r-- | arch/mips/ath79/prom.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/mips/ath79/prom.c b/arch/mips/ath79/prom.c new file mode 100644 index 000000000..cc6dc5600 --- /dev/null +++ b/arch/mips/ath79/prom.c @@ -0,0 +1,34 @@ +// 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 +} |