projects / mirror_ubuntu-jammy-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * Mapping for Ocotea user flash | |
| 3 | * | |
| 4 | * Matt Porter <mporter@kernel.crashing.org> | |
| 5 | * | |
| 6 | * Copyright 2002-2004 MontaVista Software Inc. | |
| 7 | * | |
| 8 | * This program is free software; you can redistribute it and/or modify it | |
| 9 | * under the terms of the GNU General Public License as published by the | |
| 10 | * Free Software Foundation; either version 2 of the License, or (at your | |
| 11 | * option) any later version. | |
| 12 | */ | |
| 13 | ||
| 14 | #include <linux/module.h> | |
| 15 | #include <linux/types.h> | |
| 16 | #include <linux/kernel.h> | |
| 17 | #include <linux/init.h> | |
| 18 | #include <linux/mtd/mtd.h> | |
| 19 | #include <linux/mtd/map.h> | |
| 20 | #include <linux/mtd/partitions.h> | |
| 1da177e4 LT |
21 | #include <asm/io.h> |
| 22 | #include <asm/ibm44x.h> | |
| 23 | #include <platforms/4xx/ocotea.h> | |
| 24 | ||
| 25 | static struct mtd_info *flash; | |
| 26 | ||
| 27 | static struct map_info ocotea_small_map = { | |
| 28 | .name = "Ocotea small flash", | |
| 29 | .size = OCOTEA_SMALL_FLASH_SIZE, | |
| 30 | .buswidth = 1, | |
| 31 | }; | |
| 32 | ||
| 33 | static struct map_info ocotea_large_map = { | |
| 34 | .name = "Ocotea large flash", | |
| 35 | .size = OCOTEA_LARGE_FLASH_SIZE, | |
| 36 | .buswidth = 1, | |
| 37 | }; | |
| 38 | ||
| 39 | static struct mtd_partition ocotea_small_partitions[] = { | |
| 40 | { | |
| 41 | .name = "pibs", | |
| 42 | .offset = 0x0, | |
| 43 | .size = 0x100000, | |
| 44 | } | |
| 45 | }; | |
| 46 | ||
| 47 | static struct mtd_partition ocotea_large_partitions[] = { | |
| 48 | { | |
| 49 | .name = "fs", | |
| 50 | .offset = 0, | |
| 51 | .size = 0x300000, | |
| 52 | }, | |
| 53 | { | |
| 54 | .name = "firmware", | |
| 55 | .offset = 0x300000, | |
| 56 | .size = 0x100000, | |
| 57 | } | |
| 58 | }; | |
| 59 | ||
| 1da177e4 LT |
60 | int __init init_ocotea(void) |
| 61 | { | |
| 62 | u8 fpga0_reg; | |
| 63 | u8 *fpga0_adr; | |
| 64 | unsigned long long small_flash_base, large_flash_base; | |
| 65 | ||
| 66 | fpga0_adr = ioremap64(OCOTEA_FPGA_ADDR, 16); | |
| 67 | if (!fpga0_adr) | |
| 68 | return -ENOMEM; | |
| 69 | ||
| 70 | fpga0_reg = readb((unsigned long)fpga0_adr); | |
| 71 | iounmap(fpga0_adr); | |
| 72 | ||
| 73 | if (OCOTEA_BOOT_LARGE_FLASH(fpga0_reg)) { | |
| 74 | small_flash_base = OCOTEA_SMALL_FLASH_HIGH; | |
| 75 | large_flash_base = OCOTEA_LARGE_FLASH_LOW; | |
| 76 | } | |
| 77 | else { | |
| 78 | small_flash_base = OCOTEA_SMALL_FLASH_LOW; | |
| 79 | large_flash_base = OCOTEA_LARGE_FLASH_HIGH; | |
| 80 | } | |
| 81 | ||
| 82 | ocotea_small_map.phys = small_flash_base; | |
| 83 | ocotea_small_map.virt = ioremap64(small_flash_base, | |
| 84 | ocotea_small_map.size); | |
| 85 | ||
| 86 | if (!ocotea_small_map.virt) { | |
| 87 | printk("Failed to ioremap flash\n"); | |
| 88 | return -EIO; | |
| 89 | } | |
| 90 | ||
| 91 | simple_map_init(&ocotea_small_map); | |
| 92 | ||
| 93 | flash = do_map_probe("map_rom", &ocotea_small_map); | |
| 94 | if (flash) { | |
| 95 | flash->owner = THIS_MODULE; | |
| 96 | add_mtd_partitions(flash, ocotea_small_partitions, | |
| 87d10f3c | 97 | ARRAY_SIZE(ocotea_small_partitions)); |
| 1da177e4 LT |
98 | } else { |
| 99 | printk("map probe failed for flash\n"); | |
| 100 | return -ENXIO; | |
| 101 | } | |
| 102 | ||
| 103 | ocotea_large_map.phys = large_flash_base; | |
| 104 | ocotea_large_map.virt = ioremap64(large_flash_base, | |
| 105 | ocotea_large_map.size); | |
| 106 | ||
| 107 | if (!ocotea_large_map.virt) { | |
| 108 | printk("Failed to ioremap flash\n"); | |
| 109 | return -EIO; | |
| 110 | } | |
| 111 | ||
| 112 | simple_map_init(&ocotea_large_map); | |
| 113 | ||
| 114 | flash = do_map_probe("cfi_probe", &ocotea_large_map); | |
| 115 | if (flash) { | |
| 116 | flash->owner = THIS_MODULE; | |
| 117 | add_mtd_partitions(flash, ocotea_large_partitions, | |
| 87d10f3c | 118 | ARRAY_SIZE(ocotea_large_partitions)); |
| 1da177e4 LT |
119 | } else { |
| 120 | printk("map probe failed for flash\n"); | |
| 121 | return -ENXIO; | |
| 122 | } | |
| 123 | ||
| 124 | return 0; | |
| 125 | } | |
| 126 | ||
| 127 | static void __exit cleanup_ocotea(void) | |
| 128 | { | |
| 129 | if (flash) { | |
| 130 | del_mtd_partitions(flash); | |
| 131 | map_destroy(flash); | |
| 132 | } | |
| 133 | ||
| 134 | if (ocotea_small_map.virt) { | |
| 135 | iounmap((void *)ocotea_small_map.virt); | |
| 136 | ocotea_small_map.virt = 0; | |
| 137 | } | |
| 138 | ||
| 139 | if (ocotea_large_map.virt) { | |
| 140 | iounmap((void *)ocotea_large_map.virt); | |
| 141 | ocotea_large_map.virt = 0; | |
| 142 | } | |
| 143 | } | |
| 144 | ||
| 145 | module_init(init_ocotea); | |
| 146 | module_exit(cleanup_ocotea); | |
| 147 | ||
| 148 | MODULE_LICENSE("GPL"); | |
| 149 | MODULE_AUTHOR("Matt Porter <mporter@kernel.crashing.org>"); | |
| 150 | MODULE_DESCRIPTION("MTD map and partitions for IBM 440GX Ocotea boards"); |