strip the kernel version suffix from target directories, except for brcm-2.4 (the...

[openwrt/svn-archive/archive.git] / target / linux / ar7 / files / arch / mips / ar7 / memory.c

diff --git a/target/linux/ar7/files/arch/mips/ar7/memory.c b/target/linux/ar7/files/arch/mips/ar7/memory.c
new file mode 100644 (file)
index 0000000..99faf21
--- /dev/null
+++ b/target/linux/ar7/files/arch/mips/ar7/memory.c
@@ -0,0 +1,75 @@
+/*
+ * $Id$
+ * 
+ * Copyright (C) 2007 OpenWrt.org
+ * 
+ * Based on arch/mips/mm/init.c
+ * Copyright (C) 1994 - 2000 Ralf Baechle
+ * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
+ * Kevin D. Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com
+ * Copyright (C) 2000 MIPS Technologies, Inc.  All rights reserved.
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+#include <linux/bootmem.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/pfn.h>
+#include <linux/proc_fs.h>
+#include <linux/string.h>
+#include <linux/swap.h>
+
+#include <asm/bootinfo.h>
+#include <asm/page.h>
+#include <asm/sections.h>
+
+#include <asm/mips-boards/prom.h>
+
+static int __init memsize(void)
+{
+       u32 size = (64 << 20);
+       volatile u32 *addr = (u32 *)KSEG1ADDR(0x14000000 + size - 4);
+       u32 *kernel_end = (u32 *)KSEG1ADDR(CPHYSADDR((u32)&_end));
+
+       while (addr > kernel_end) {
+               *addr = (u32)addr;
+               size >>= 1;
+               addr -= size >> 2;
+       }
+
+       do {
+               addr += size >> 2;
+               if (*addr != (u32)addr)
+                       break;
+               size <<= 1;
+       } while (size < (64 << 20));
+
+       return size;
+}
+
+void __init prom_meminit(void)
+{
+       unsigned long pages;
+
+       pages = memsize() >> PAGE_SHIFT;
+       add_memory_region(ARCH_PFN_OFFSET << PAGE_SHIFT, pages <<
+                         PAGE_SHIFT, BOOT_MEM_RAM);
+}
+
+void __init prom_free_prom_memory(void)
+{
+       return;
+}