1 /* 2 * Renesas Technology Europe RSK+ Support. 3 * 4 * Copyright (C) 2008 Paul Mundt 5 * Copyright (C) 2008 Peter Griffin <pgriffin@mpc-data.co.uk> 6 * 7 * This file is subject to the terms and conditions of the GNU General Public 8 * License. See the file "COPYING" in the main directory of this archive 9 * for more details. 10 */ 11 #include <linux/init.h> 12 #include <linux/types.h> 13 #include <linux/platform_device.h> 14 #include <linux/interrupt.h> 15 #include <linux/mtd/mtd.h> 16 #include <linux/mtd/partitions.h> 17 #include <linux/mtd/physmap.h> 18 #include <linux/mtd/map.h> 19 #include <asm/machvec.h> 20 #include <asm/io.h> 21 22 static const char *probes[] = { "cmdlinepart", NULL }; 23 24 static struct mtd_partition *parsed_partitions; 25 26 static struct mtd_partition rsk_partitions[] = { 27 { 28 .name = "Bootloader", 29 .offset = 0x00000000, 30 .size = 0x00040000, 31 .mask_flags = MTD_WRITEABLE, 32 }, { 33 .name = "Kernel", 34 .offset = MTDPART_OFS_NXTBLK, 35 .size = 0x001c0000, 36 }, { 37 .name = "Flash_FS", 38 .offset = MTDPART_OFS_NXTBLK, 39 .size = MTDPART_SIZ_FULL, 40 } 41 }; 42 43 static struct physmap_flash_data flash_data = { 44 .width = 2, 45 }; 46 47 static struct resource flash_resource = { 48 .start = 0x20000000, 49 .end = 0x20400000, 50 .flags = IORESOURCE_MEM, 51 }; 52 53 static struct platform_device flash_device = { 54 .name = "physmap-flash", 55 .id = -1, 56 .resource = &flash_resource, 57 .num_resources = 1, 58 .dev = { 59 .platform_data = &flash_data, 60 }, 61 }; 62 63 static struct mtd_info *flash_mtd; 64 65 static struct map_info rsk_flash_map = { 66 .name = "RSK+ Flash", 67 .size = 0x400000, 68 .bankwidth = 2, 69 }; 70 71 static void __init set_mtd_partitions(void) 72 { 73 int nr_parts = 0; 74 75 simple_map_init(&rsk_flash_map); 76 flash_mtd = do_map_probe("cfi_probe", &rsk_flash_map); 77 nr_parts = parse_mtd_partitions(flash_mtd, probes, 78 &parsed_partitions, 0); 79 /* If there is no partition table, used the hard coded table */ 80 if (nr_parts <= 0) { 81 flash_data.parts = rsk_partitions; 82 flash_data.nr_parts = ARRAY_SIZE(rsk_partitions); 83 } else { 84 flash_data.nr_parts = nr_parts; 85 flash_data.parts = parsed_partitions; 86 } 87 } 88 89 static struct platform_device *rsk_devices[] __initdata = { 90 &flash_device, 91 }; 92 93 static int __init rsk_devices_setup(void) 94 { 95 set_mtd_partitions(); 96 return platform_add_devices(rsk_devices, 97 ARRAY_SIZE(rsk_devices)); 98 } 99 device_initcall(rsk_devices_setup); 100 101 /* 102 * The Machine Vector 103 */ 104 static struct sh_machine_vector mv_rsk __initmv = { 105 .mv_name = "RSK+", 106 }; 107