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-rw-r--r--arch/mips/ath79/prom.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/mips/ath79/prom.c b/arch/mips/ath79/prom.c
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+++ b/arch/mips/ath79/prom.c
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+// 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
+}