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Diffstat (limited to 'arch/hexagon/include/asm/mem-layout.h')
-rw-r--r--arch/hexagon/include/asm/mem-layout.h28
1 files changed, 18 insertions, 10 deletions
diff --git a/arch/hexagon/include/asm/mem-layout.h b/arch/hexagon/include/asm/mem-layout.h
index af16e977c55e..60556f8c45d8 100644
--- a/arch/hexagon/include/asm/mem-layout.h
+++ b/arch/hexagon/include/asm/mem-layout.h
@@ -1,7 +1,7 @@
/*
* Memory layout definitions for the Hexagon architecture
*
- * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2010-2013, The Linux Foundation. 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 version 2 and
@@ -32,16 +32,25 @@
#define PAGE_OFFSET _AC(0xc0000000, UL)
/*
- * LOAD_ADDRESS is the physical/linear address of where in memory
- * the kernel gets loaded. The 12 least significant bits must be zero (0)
- * due to limitations on setting the EVB
- *
+ * Compiling for a platform that needs a crazy physical offset
+ * (like if the memory starts at 1GB and up) means we need
+ * an actual PHYS_OFFSET. Should be set up in head.S.
*/
-#ifndef LOAD_ADDRESS
-#define LOAD_ADDRESS 0x00000000
+#ifdef CONFIG_HEXAGON_PHYS_OFFSET
+#ifndef __ASSEMBLY__
+extern unsigned long __phys_offset;
+#endif
+#define PHYS_OFFSET __phys_offset
+#endif
+
+#ifndef PHYS_OFFSET
+#define PHYS_OFFSET 0
#endif
+#define PHYS_PFN_OFFSET (PHYS_OFFSET >> PAGE_SHIFT)
+#define ARCH_PFN_OFFSET PHYS_PFN_OFFSET
+
#define TASK_SIZE (PAGE_OFFSET)
/* not sure how these are used yet */
@@ -55,7 +64,7 @@ enum fixed_addresses {
__end_of_fixed_addresses
};
-#define MIN_KERNEL_SEG 0x300 /* From 0xc0000000 */
+#define MIN_KERNEL_SEG (PAGE_OFFSET >> PGDIR_SHIFT) /* L1 shift is 22 bits */
extern int max_kernel_seg;
/*
@@ -63,8 +72,7 @@ extern int max_kernel_seg;
* supposed to be based on the amount of physical memory available
*/
-#define VMALLOC_START (PAGE_OFFSET + VMALLOC_OFFSET + \
- (unsigned long)high_memory)
+#define VMALLOC_START ((unsigned long) __va(high_memory + VMALLOC_OFFSET))
/* Gap between physical ram and vmalloc space for guard purposes. */
#define VMALLOC_OFFSET PAGE_SIZE