Merge tag 'v2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

[mv-sheeva.git] / arch / mips / ath79 / prom.c

diff --git a/arch/mips/ath79/prom.c b/arch/mips/ath79/prom.c
new file mode 100644 (file)
index 0000000..e9cbd7c
--- /dev/null
+++ b/arch/mips/ath79/prom.c
@@ -0,0 +1,57 @@
+/*
+ *  Atheros AR71XX/AR724X/AR913X specific prom routines
+ *
+ *  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 <asm/bootinfo.h>
+#include <asm/addrspace.h>
+
+#include "common.h"
+
+static inline int is_valid_ram_addr(void *addr)
+{
+       if (((u32) addr > KSEG0) &&
+           ((u32) addr < (KSEG0 + ATH79_MEM_SIZE_MAX)))
+               return 1;
+
+       if (((u32) addr > KSEG1) &&
+           ((u32) addr < (KSEG1 + ATH79_MEM_SIZE_MAX)))
+               return 1;
+
+       return 0;
+}
+
+static __init void ath79_prom_init_cmdline(int argc, char **argv)
+{
+       int i;
+
+       if (!is_valid_ram_addr(argv))
+               return;
+
+       for (i = 0; i < argc; i++)
+               if (is_valid_ram_addr(argv[i])) {
+                       strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
+                       strlcat(arcs_cmdline, argv[i], sizeof(arcs_cmdline));
+               }
+}
+
+void __init prom_init(void)
+{
+       ath79_prom_init_cmdline(fw_arg0, (char **)fw_arg1);
+}
+
+void __init prom_free_prom_memory(void)
+{
+       /* We do not have to prom memory to free */
+}