2 files changed, 18 insertions, 13 deletions

diff --git a/arch/arm/mach-zynq/common.c b/arch/arm/mach-zynq/common.c
index ba48f067d8f2..ba8d14f78d4d 100644
--- a/arch/arm/mach-zynq/common.c
+++ b/arch/arm/mach-zynq/common.c
@@ -73,12 +73,12 @@ static struct map_desc io_desc[] __initdata = {
         {
                 .virtual        = TTC0_VIRT,
                 .pfn            = __phys_to_pfn(TTC0_PHYS),
-                .length         = SZ_4K,
+                .length         = TTC0_SIZE,
                 .type           = MT_DEVICE,
         }, {
                 .virtual        = SCU_PERIPH_VIRT,
                 .pfn            = __phys_to_pfn(SCU_PERIPH_PHYS),
-                .length         = SZ_8K,
+                .length         = SCU_PERIPH_SIZE,
                 .type           = MT_DEVICE,
         },
 
@@ -86,7 +86,7 @@ static struct map_desc io_desc[] __initdata = {
         {
                 .virtual        = UART0_VIRT,
                 .pfn            = __phys_to_pfn(UART0_PHYS),
-                .length         = SZ_4K,
+                .length         = UART0_SIZE,
                 .type           = MT_DEVICE,
         },
 #endif
diff --git a/arch/arm/mach-zynq/include/mach/zynq_soc.h b/arch/arm/mach-zynq/include/mach/zynq_soc.h
index 218283a94247..1b8bf0ecbcb0 100644
--- a/arch/arm/mach-zynq/include/mach/zynq_soc.h
+++ b/arch/arm/mach-zynq/include/mach/zynq_soc.h
@@ -15,27 +15,32 @@
 #ifndef __MACH_XILINX_SOC_H__
 #define __MACH_XILINX_SOC_H__
 
+#include <asm/pgtable.h>
+
 #define PERIPHERAL_CLOCK_RATE           2500000
 
-/* For now, all mappings are flat (physical = virtual)
+/* Static peripheral mappings are mapped at the top of the vmalloc region.  The
+ * early uart mapping causes intermediate problems/failure at certain
+ * addresses, including the very top of the vmalloc region.  Map it at an
+ * address that is known to work.
  */
-#define UART0_PHYS                      0xE0000000
-#define UART0_VIRT                      UART0_PHYS
+#define UART0_PHYS              0xE0000000
+#define UART0_SIZE              SZ_4K
+#define UART0_VIRT              0xF0001000
 
-#define TTC0_PHYS                       0xF8001000
-#define TTC0_VIRT                       TTC0_PHYS
+#define TTC0_PHYS               0xF8001000
+#define TTC0_SIZE               SZ_4K
+#define TTC0_VIRT               (VMALLOC_END - TTC0_SIZE)
 
-#define SCU_PERIPH_PHYS                 0xF8F00000
-#define SCU_PERIPH_VIRT                 SCU_PERIPH_PHYS
+#define SCU_PERIPH_PHYS         0xF8F00000
+#define SCU_PERIPH_SIZE         SZ_8K
+#define SCU_PERIPH_VIRT         (TTC0_VIRT - SCU_PERIPH_SIZE)
 
 /* The following are intended for the devices that are mapped early */
 
 #define TTC0_BASE                       IOMEM(TTC0_VIRT)
 #define SCU_PERIPH_BASE                 IOMEM(SCU_PERIPH_VIRT)
 
-/*
- * Mandatory for CONFIG_LL_DEBUG, UART is mapped virtual = physical
- */
 #define LL_UART_PADDR   UART0_PHYS
 #define LL_UART_VADDR   UART0_VIRT