MAP_BASE
#ifndef MAP_BASE
#ifndef MAP_BASE
#define VMALLOC_START MAP_BASE
#define VMALLOC_START (MAP_BASE + (2 * PAGE_SIZE))
(MAP_BASE + \
if ((vaddr < PAGE_OFFSET) || (vaddr >= MAP_BASE))
if (iommu_table_init(iommu, IO_TSB_SIZE, MAP_BASE, 0xffffffff, -1))
map = MAP_BASE;