1 files changed, 41 insertions, 1 deletions

diff --git a/arch/arm/mach-realview/core.c b/arch/arm/mach-realview/core.c
index a2083b60e3f..9f293438e02 100644
--- a/arch/arm/mach-realview/core.c
+++ b/arch/arm/mach-realview/core.c
@@ -59,6 +59,25 @@
 /* used by entry-macro.S and platsmp.c */
 void __iomem *gic_cpu_base_addr;
 
+#ifdef CONFIG_ZONE_DMA
+/*
+ * Adjust the zones if there are restrictions for DMA access.
+ */
+void __init realview_adjust_zones(int node, unsigned long *size,
+                                  unsigned long *hole)
+{
+        unsigned long dma_size = SZ_256M >> PAGE_SHIFT;
+
+        if (!machine_is_realview_pbx() || node || (size[0] <= dma_size))
+                return;
+
+        size[ZONE_NORMAL] = size[0] - dma_size;
+        size[ZONE_DMA] = dma_size;
+        hole[ZONE_NORMAL] = hole[0];
+        hole[ZONE_DMA] = 0;
+}
+#endif
+
 /*
  * This is the RealView sched_clock implementation.  This has
  * a resolution of 41.7ns, and a maximum value of about 179s.
@@ -543,7 +562,7 @@ static int realview_clcd_setup(struct clcd_fb *fb)
         fb->panel               = realview_clcd_panel();
 
         fb->fb.screen_base = dma_alloc_writecombine(&fb->dev->dev, framesize,
-                                                    &dma, GFP_KERNEL);
+                                                    &dma, GFP_KERNEL | GFP_DMA);
         if (!fb->fb.screen_base) {
                 printk(KERN_ERR "CLCD: unable to map framebuffer\n");
                 return -ENOMEM;
@@ -788,3 +807,24 @@ void __init realview_timer_init(unsigned int timer_irq)
         realview_clocksource_init();
         realview_clockevents_init(timer_irq);
 }
+
+/*
+ * Setup the memory banks.
+ */
+void realview_fixup(struct machine_desc *mdesc, struct tag *tags, char **from,
+                    struct meminfo *meminfo)
+{
+        /*
+         * Most RealView platforms have 512MB contiguous RAM at 0x70000000.
+         * Half of this is mirrored at 0.
+         */
+#ifdef CONFIG_REALVIEW_HIGH_PHYS_OFFSET
+        meminfo->bank[0].start = 0x70000000;
+        meminfo->bank[0].size = SZ_512M;
+        meminfo->nr_banks = 1;
+#else
+        meminfo->bank[0].start = 0;
+        meminfo->bank[0].size = SZ_256M;
+        meminfo->nr_banks = 1;
+#endif
+}