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From 7e47cefa69c8ed2c889522ce29fcce73ce8cf08e Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Sun, 20 Jan 2013 22:01:05 +0100
Subject: [PATCH 04/14] MIPS: ralink: adds prom and cmdline code
Add minimal code to handle commandlines.
Signed-off-by: John Crispin <blogic@openwrt.org>
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4892/
---
arch/mips/ralink/prom.c | 69 +++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 69 insertions(+)
create mode 100644 arch/mips/ralink/prom.c
--- /dev/null
+++ b/arch/mips/ralink/prom.c
@@ -0,0 +1,69 @@
+/*
+ * 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.
+ *
+ * Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
+ * Copyright (C) 2010 Joonas Lahtinen <joonas.lahtinen@gmail.com>
+ * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
+ */
+
+#include <linux/string.h>
+#include <linux/of_fdt.h>
+#include <linux/of_platform.h>
+
+#include <asm/bootinfo.h>
+#include <asm/addrspace.h>
+
+#include "common.h"
+
+struct ralink_soc_info soc_info;
+
+const char *get_system_type(void)
+{
+ return soc_info.sys_type;
+}
+
+static __init void prom_init_cmdline(int argc, char **argv)
+{
+ int i;
+
+ pr_debug("prom: fw_arg0=%08x fw_arg1=%08x fw_arg2=%08x fw_arg3=%08x\n",
+ (unsigned int)fw_arg0, (unsigned int)fw_arg1,
+ (unsigned int)fw_arg2, (unsigned int)fw_arg3);
+
+ argc = fw_arg0;
+ argv = (char **) KSEG1ADDR(fw_arg1);
+
+ if (!argv) {
+ pr_debug("argv=%p is invalid, skipping\n",
+ argv);
+ return;
+ }
+
+ for (i = 0; i < argc; i++) {
+ char *p = (char *) KSEG1ADDR(argv[i]);
+
+ if (CPHYSADDR(p) && *p) {
+ pr_debug("argv[%d]: %s\n", i, p);
+ strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
+ strlcat(arcs_cmdline, p, sizeof(arcs_cmdline));
+ }
+ }
+}
+
+void __init prom_init(void)
+{
+ int argc;
+ char **argv;
+
+ prom_soc_init(&soc_info);
+
+ pr_info("SoC Type: %s\n", get_system_type());
+
+ prom_init_cmdline(argc, argv);
+}
+
+void __init prom_free_prom_memory(void)
+{
+}
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