Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 42 insertions, 0 deletions

diff --git a/arch/mips/ath79/prom.c b/arch/mips/ath79/prom.c
new file mode 100644
index 000000000..597899ad5
--- /dev/null
+++ b/arch/mips/ath79/prom.c
@@ -0,0 +1,42 @@
+/*
+ *  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>
+ *
+ *  This program is free software; you can redistribute it and/or modify it
+ *  under the terms of the GNU General Public License version 2 as published
+ *  by the Free Software Foundation.
+ */
+
+#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 */
+}