1/* 2 * drivers/mtd/maps/pq2fads.c 3 * 4 * Mapping for the flash SIMM on 8272ADS and PQ2FADS board 5 * 6 * Author: Vitaly Bordug <vbordug@ru.mvista.com> 7 * 8 * 2005 (c) MontaVista Software, Inc. This file is licensed under 9 * the terms of the GNU General Public License version 2. This program 10 * is licensed "as is" without any warranty of any kind, whether express 11 * or implied. 12 */ 13 14#include <linux/module.h> 15#include <linux/types.h> 16#include <linux/kernel.h> 17#include <linux/init.h> 18#include <asm/io.h> 19#include <asm/ppcboot.h> 20#include <linux/mtd/mtd.h> 21#include <linux/mtd/map.h> 22#include <linux/mtd/partitions.h> 23#include <linux/mtd/physmap.h> 24 25/* 26 NOTE: bank width and interleave relative to the installed flash 27 should have been chosen within MTD_CFI_GEOMETRY options. 28 */ 29#define PQ2FADS_BANK_WIDTH 4 30 31static struct mtd_partition pq2fads_partitions[] = { 32 { 33#ifdef CONFIG_ADS8272 34 .name = "HRCW", 35 .size = 0x40000, 36 .offset = 0, 37 .mask_flags = MTD_WRITEABLE, /* force read-only */ 38 }, { 39 .name = "User FS", 40 .size = 0x5c0000, 41 .offset = 0x40000, 42#else 43 .name = "User FS", 44 .size = 0x600000, 45 .offset = 0, 46#endif 47 }, { 48 .name = "uImage", 49 .size = 0x100000, 50 .offset = 0x600000, 51 .mask_flags = MTD_WRITEABLE, /* force read-only */ 52 }, { 53 .name = "bootloader", 54 .size = 0x40000, 55 .offset = 0x700000, 56 .mask_flags = MTD_WRITEABLE, /* force read-only */ 57 }, { 58 .name = "bootloader env", 59 .size = 0x40000, 60 .offset = 0x740000, 61 .mask_flags = MTD_WRITEABLE, /* force read-only */ 62 } 63}; 64 65 66/* pointer to MPC885ADS board info data */ 67extern unsigned char __res[]; 68 69static int __init init_pq2fads_mtd(void) 70{ 71 bd_t *bd = (bd_t *)__res; 72 physmap_configure(bd->bi_flashstart, bd->bi_flashsize, PQ2FADS_BANK_WIDTH, NULL); 73 74 physmap_set_partitions(pq2fads_partitions, 75 sizeof (pq2fads_partitions) / 76 sizeof (pq2fads_partitions[0])); 77 return 0; 78} 79 80static void __exit cleanup_pq2fads_mtd(void) 81{ 82} 83 84module_init(init_pq2fads_mtd); 85module_exit(cleanup_pq2fads_mtd); 86 87MODULE_LICENSE("GPL"); 88MODULE_DESCRIPTION("MTD map and partitions for MPC8272ADS boards"); 89