MIPS: Loongson: Split common loongson source code out
To share common loongson source code between all of the loongson-based
machines. there is a need to split it out of the fuloong-2e/ directory.
at the same time, other according tuning is needed. the machine-specific
parts are defined as macros in relative header file, pci.h, mem.h,
machine.h.
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/loongson/common/mem.c b/arch/mips/loongson/common/mem.c
new file mode 100644
index 0000000..7c92f79
--- /dev/null
+++ b/arch/mips/loongson/common/mem.c
@@ -0,0 +1,35 @@
+/*
+ * 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.
+ */
+#include <linux/fs.h>
+#include <linux/fcntl.h>
+#include <linux/mm.h>
+
+#include <asm/bootinfo.h>
+
+#include <loongson.h>
+#include <mem.h>
+
+void __init prom_init_memory(void)
+{
+ add_memory_region(0x0, (memsize << 20), BOOT_MEM_RAM);
+#ifdef CONFIG_64BIT
+ if (highmemsize > 0)
+ add_memory_region(LOONGSON_HIGHMEM_START,
+ highmemsize << 20, BOOT_MEM_RAM);
+#endif /* CONFIG_64BIT */
+}
+
+/* override of arch/mips/mm/cache.c: __uncached_access */
+int __uncached_access(struct file *file, unsigned long addr)
+{
+ if (file->f_flags & O_SYNC)
+ return 1;
+
+ return addr >= __pa(high_memory) ||
+ ((addr >= LOONGSON_MMIO_MEM_START) &&
+ (addr < LOONGSON_MMIO_MEM_END));
+}