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-rw-r--r--arch/arm/include/asm/mach/arch.h4
-rw-r--r--arch/arm/kernel/setup.c6
2 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm/include/asm/mach/arch.h b/arch/arm/include/asm/mach/arch.h
index 946f4d778f71..3281fb4b12e3 100644
--- a/arch/arm/include/asm/mach/arch.h
+++ b/arch/arm/include/asm/mach/arch.h
@@ -23,6 +23,10 @@ struct machine_desc {
unsigned int nr_irqs; /* number of IRQs */
+#ifdef CONFIG_ZONE_DMA
+ unsigned long dma_zone_size; /* size of DMA-able area */
+#endif
+
unsigned int video_start; /* start of video RAM */
unsigned int video_end; /* end of video RAM */
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index ed11fb08b05a..e0db84d7e384 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -916,6 +916,12 @@ void __init setup_arch(char **cmdline_p)
cpu_init();
tcm_init();
+#ifdef CONFIG_ZONE_DMA
+ if (mdesc->dma_zone_size) {
+ extern unsigned long arm_dma_zone_size;
+ arm_dma_zone_size = mdesc->dma_zone_size;
+ }
+#endif
#ifdef CONFIG_MULTI_IRQ_HANDLER
handle_arch_irq = mdesc->handle_irq;
#endif