ARM: add dma_zone_size to the machine_desc structure

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>

diff --git a/arch/arm/include/asm/mach/arch.h b/arch/arm/include/asm/mach/arch.h
index 946f4d7..3281fb4 100644 (file)
--- 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 ed11fb0..e0db84d 100644 (file)
--- 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