[PATCH 1/1] arm pxa: enable defining 1-Gbyte memory map layout for PXA27x.

[Rodolfo Giometti <giometti@xxxxxxxx>]

Signed-off-by: Rodolfo Giometti <giometti@xxxxxxxx>
---
 arch/arm/mach-pxa/Kconfig               |    6 ++++++
 arch/arm/mach-pxa/include/mach/memory.h |   18 ++++++++++++++++++
 2 files changed, 24 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-pxa/Kconfig b/arch/arm/mach-pxa/Kconfig
index 8eea730..212ff7d 100644
--- a/arch/arm/mach-pxa/Kconfig
+++ b/arch/arm/mach-pxa/Kconfig
@@ -421,6 +421,12 @@ config PXA3xx
 	help
 	  Select code specific to PXA3xx variants
 
+config ARCH_PXA_1GB_MMAP
+	bool
+	depends on PXA27x
+	help
+	  Select PXA27x 1-Gbyte memory map
+
 config PXA_SHARP_C7xx
 	bool
 	select PXA_SSP
diff --git a/arch/arm/mach-pxa/include/mach/memory.h b/arch/arm/mach-pxa/include/mach/memory.h
index f626730..c5c2c71 100644
--- a/arch/arm/mach-pxa/include/mach/memory.h
+++ b/arch/arm/mach-pxa/include/mach/memory.h
@@ -17,6 +17,22 @@
  */
 #define PHYS_OFFSET	UL(0xa0000000)
 
+#ifdef CONFIG_ARCH_PXA_1GB_MMAP
+
+/*
+ * The nodes are matched with the physical SDRAM banks as follows:
+ *
+ *      node 0:  0x80000000-0x8fffffff  -->  0xa0000000-0xafffffff
+ *      node 1:  0x90000000-0x9fffffff  -->  0xb0000000-0xbfffffff
+ *      node 2:  0xa0000000-0xafffffff  -->  0xc0000000-0xcfffffff
+ *      node 3:  0xb0000000-0xbfffffff  -->  0xd0000000-0xdfffffff
+ *
+ * This needs a node mem size of 28 bits.
+ */
+#define NODE_MEM_SIZE_BITS      28
+
+#else
+
 /*
  * The nodes are matched with the physical SDRAM banks as follows:
  *
@@ -29,6 +45,8 @@
  */
 #define NODE_MEM_SIZE_BITS	26
 
+#endif
+
 #if !defined(__ASSEMBLY__) && defined(CONFIG_MACH_ARMCORE) && defined(CONFIG_PCI)
 void cmx2xx_pci_adjust_zones(int node, unsigned long *size,
 			     unsigned long *holes);
-- 
1.5.6.3


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