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-rw-r--r--arch/arm/mm/mmu.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 941dfb9e9a78..39719bb93caa 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -876,6 +876,22 @@ static void __init pci_reserve_io(void)
#define pci_reserve_io() do { } while (0)
#endif
+#ifdef CONFIG_DEBUG_LL
+void __init debug_ll_io_init(void)
+{
+ struct map_desc map;
+
+ debug_ll_addr(&map.pfn, &map.virtual);
+ if (!map.pfn || !map.virtual)
+ return;
+ map.pfn = __phys_to_pfn(map.pfn);
+ map.virtual &= PAGE_MASK;
+ map.length = PAGE_SIZE;
+ map.type = MT_DEVICE;
+ create_mapping(&map);
+}
+#endif
+
static void * __initdata vmalloc_min =
(void *)(VMALLOC_END - (240 << 20) - VMALLOC_OFFSET);