| 1 | /* |
| 2 | * Bifferboard RDC321x platform devices |
| 3 | * |
| 4 | * Copyright (C) 2010 bifferos@yahoo.co.uk |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * as published by the Free Software Foundation; either version 2 |
| 9 | * of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the |
| 18 | * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 19 | * Boston, MA 02110-1301, USA. |
| 20 | * |
| 21 | */ |
| 22 | |
| 23 | #include <linux/init.h> |
| 24 | #include <linux/mtd/physmap.h> |
| 25 | #include <linux/input.h> |
| 26 | |
| 27 | #include <asm/rdc_boards.h> |
| 28 | |
| 29 | static int __init parse_bifferboard_partitions(struct mtd_info *master, struct mtd_partition **pparts, unsigned long plat_data) |
| 30 | { |
| 31 | int res; |
| 32 | size_t len; |
| 33 | struct mtd_partition *rdc_flash_parts; |
| 34 | u32 kernel_len; |
| 35 | u16 tmp; |
| 36 | |
| 37 | if (master->size == 0x100000) |
| 38 | kernel_len = master->size - 0x10000; |
| 39 | else { |
| 40 | res = master->read(master, 0x4000 + 1036, 2, &len, (char *) &tmp); |
| 41 | if (res) |
| 42 | return res; |
| 43 | kernel_len = tmp * master->erasesize; |
| 44 | } |
| 45 | |
| 46 | rdc_flash_parts = kzalloc(sizeof(struct mtd_partition) * 4, GFP_KERNEL); |
| 47 | |
| 48 | *pparts = rdc_flash_parts; |
| 49 | |
| 50 | rdc_flash_parts[0].name = "biffboot"; |
| 51 | rdc_flash_parts[0].offset = master->size - 0x10000; |
| 52 | rdc_flash_parts[0].size = 0x10000; |
| 53 | rdc_flash_parts[0].mask_flags = MTD_WRITEABLE; |
| 54 | rdc_flash_parts[1].name = "firmware"; |
| 55 | rdc_flash_parts[1].offset = 0; |
| 56 | rdc_flash_parts[1].size = rdc_flash_parts[0].offset; |
| 57 | rdc_flash_parts[2].name = "kernel"; |
| 58 | rdc_flash_parts[2].offset = 0x00000000; |
| 59 | rdc_flash_parts[2].size = kernel_len; |
| 60 | |
| 61 | if (master->size == 0x100000) |
| 62 | return 2; |
| 63 | |
| 64 | rdc_flash_parts[3].name = "rootfs"; |
| 65 | rdc_flash_parts[3].offset = MTDPART_OFS_APPEND; |
| 66 | rdc_flash_parts[3].size = rdc_flash_parts[1].size - rdc_flash_parts[2].size; |
| 67 | |
| 68 | return 4; |
| 69 | } |
| 70 | |
| 71 | struct mtd_part_parser __initdata bifferboard_parser = { |
| 72 | .owner = THIS_MODULE, |
| 73 | .parse_fn = parse_bifferboard_partitions, |
| 74 | .name = "Bifferboard", |
| 75 | }; |
| 76 | |
| 77 | static int __init bifferboard_setup(void) |
| 78 | { |
| 79 | return register_mtd_parser(&bifferboard_parser); |
| 80 | } |
| 81 | |
| 82 | arch_initcall(bifferboard_setup); |
| 83 | |
