Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 37 insertions, 0 deletions

diff --git a/arch/arm/mach-sa1100/include/mach/memory.h b/arch/arm/mach-sa1100/include/mach/memory.h
new file mode 100644
index 000000000..fa5cf4744
--- /dev/null
+++ b/arch/arm/mach-sa1100/include/mach/memory.h
@@ -0,0 +1,37 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * arch/arm/mach-sa1100/include/mach/memory.h
+ *
+ * Copyright (C) 1999-2000 Nicolas Pitre <nico@fluxnic.net>
+ */
+
+#ifndef __ASM_ARCH_MEMORY_H
+#define __ASM_ARCH_MEMORY_H
+
+#include <asm/sizes.h>
+
+/*
+ * Because of the wide memory address space between physical RAM banks on the
+ * SA1100, it's much convenient to use Linux's SparseMEM support to implement
+ * our memory map representation.  Assuming all memory nodes have equal access
+ * characteristics, we then have generic discontiguous memory support.
+ *
+ * The sparsemem banks are matched with the physical memory bank addresses
+ * which are incidentally the same as virtual addresses.
+ * 
+ * 	node 0:  0xc0000000 - 0xc7ffffff
+ * 	node 1:  0xc8000000 - 0xcfffffff
+ * 	node 2:  0xd0000000 - 0xd7ffffff
+ * 	node 3:  0xd8000000 - 0xdfffffff
+ */
+#define MAX_PHYSMEM_BITS	32
+#define SECTION_SIZE_BITS	27
+
+/*
+ * Cache flushing area - SA1100 zero bank
+ */
+#define FLUSH_BASE_PHYS		0xe0000000
+#define FLUSH_BASE		0xf5000000
+#define FLUSH_BASE_MINICACHE	0xf5100000
+
+#endif