1 /* 2 * linux/arch/arm/mach-mmp/common.c 3 * 4 * Code common to PXA168 processor lines 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 */ 10 11 #include <linux/init.h> 12 #include <linux/kernel.h> 13 #include <linux/module.h> 14 15 #include <asm/page.h> 16 #include <asm/mach/map.h> 17 #include <mach/addr-map.h> 18 #include <mach/cputype.h> 19 20 #include "common.h" 21 22 #define MMP_CHIPID (AXI_VIRT_BASE + 0x82c00) 23 24 unsigned int mmp_chip_id; 25 EXPORT_SYMBOL(mmp_chip_id); 26 27 static struct map_desc standard_io_desc[] __initdata = { 28 { 29 .pfn = __phys_to_pfn(APB_PHYS_BASE), 30 .virtual = APB_VIRT_BASE, 31 .length = APB_PHYS_SIZE, 32 .type = MT_DEVICE, 33 }, { 34 .pfn = __phys_to_pfn(AXI_PHYS_BASE), 35 .virtual = AXI_VIRT_BASE, 36 .length = AXI_PHYS_SIZE, 37 .type = MT_DEVICE, 38 }, 39 }; 40 41 void __init mmp_map_io(void) 42 { 43 iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc)); 44 45 /* this is early, initialize mmp_chip_id here */ 46 mmp_chip_id = __raw_readl(MMP_CHIPID); 47 } 48