[PATCH] ARM: 2686/2: AAEC-2000 Core support
Patch from Bellido Nicolas
Core support for AAEC-2000 based platforms.
This is an updated version of the previous patch, and takes
into account Russell's comments.
AAED-2000 default configuration will follow as soon
as some problems with the bootloader are sorted out...
Signed-off-by: Nicolas Bellido
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/include/asm-arm/arch-aaec2000/memory.h b/include/asm-arm/arch-aaec2000/memory.h
new file mode 100644
index 0000000..681b6a6
--- /dev/null
+++ b/include/asm-arm/arch-aaec2000/memory.h
@@ -0,0 +1,73 @@
+/*
+ * linux/include/asm-arm/arch-aaec2000/memory.h
+ *
+ * Copyright (c) 2005 Nicolas Bellido Y Ortega
+ *
+ * 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.
+ */
+
+#ifndef __ASM_ARCH_MEMORY_H
+#define __ASM_ARCH_MEMORY_H
+
+#include <linux/config.h>
+
+#define PHYS_OFFSET (0xf0000000UL)
+
+#define __virt_to_bus(x) __virt_to_phys(x)
+#define __bus_to_virt(x) __phys_to_virt(x)
+
+#ifdef CONFIG_DISCONTIGMEM
+
+/*
+ * The nodes are the followings:
+ *
+ * node 0: 0xf000.0000 - 0xf3ff.ffff
+ * node 1: 0xf400.0000 - 0xf7ff.ffff
+ * node 2: 0xf800.0000 - 0xfbff.ffff
+ * node 3: 0xfc00.0000 - 0xffff.ffff
+ */
+
+/*
+ * Given a kernel address, find the home node of the underlying memory.
+ */
+#define KVADDR_TO_NID(addr) \
+ (((unsigned long)(addr) - PAGE_OFFSET) >> NODE_MAX_MEM_SHIFT)
+
+/*
+ * Given a page frame number, convert it to a node id.
+ */
+#define PFN_TO_NID(pfn) \
+ (((pfn) - PHYS_PFN_OFFSET) >> (NODE_MAX_MEM_SHIFT - PAGE_SHIFT))
+
+/*
+ * Given a kaddr, ADDR_TO_MAPBASE finds the owning node of the memory
+ * and return the mem_map of that node.
+ */
+#define ADDR_TO_MAPBASE(kaddr) NODE_MEM_MAP(KVADDR_TO_NID(kaddr))
+
+/*
+ * Given a page frame number, find the owning node of the memory
+ * and return the mem_map of that node.
+ */
+#define PFN_TO_MAPBASE(pfn) NODE_MEM_MAP(PFN_TO_NID(pfn))
+
+/*
+ * Given a kaddr, LOCAL_MEM_MAP finds the owning node of the memory
+ * and returns the index corresponding to the appropriate page in the
+ * node's mem_map.
+ */
+#define LOCAL_MAP_NR(addr) \
+ (((unsigned long)(addr) & (NODE_MAX_MEM_SIZE - 1)) >> PAGE_SHIFT)
+
+#define NODE_MAX_MEM_SHIFT 26
+#define NODE_MAX_MEM_SIZE (1 << NODE_MAX_MEM_SHIFT)
+
+#else
+
+#define PFN_TO_NID(addr) (0)
+
+#endif /* CONFIG_DISCONTIGMEM */
+
+#endif /* __ASM_ARCH_MEMORY_H */