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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 | /* * $Id: ebony.c,v 1.8 2003/06/23 11:48:18 dwmw2 Exp $ * * Mapping for Ebony user flash * * Matt Porter <mporter@mvista.com> * * Copyright 2002 MontaVista Software Inc. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. */ #include <linux/module.h> #include <linux/types.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/mtd/mtd.h> #include <linux/mtd/map.h> #include <linux/mtd/partitions.h> #include <linux/config.h> #include <asm/io.h> #include <asm/ibm440.h> #include <platforms/ebony.h> static struct mtd_info *flash; static struct map_info ebony_small_map = { .name = "Ebony small flash", .size = EBONY_SMALL_FLASH_SIZE, .buswidth = 1, }; static struct map_info ebony_large_map = { .name = "Ebony large flash", .size = EBONY_LARGE_FLASH_SIZE, .buswidth = 1, }; static struct mtd_partition ebony_small_partitions[] = { { .name = "OpenBIOS", .offset = 0x0, .size = 0x80000, } }; static struct mtd_partition ebony_large_partitions[] = { { .name = "fs", .offset = 0, .size = 0x380000, }, { .name = "firmware", .offset = 0x380000, .size = 0x80000, } }; int __init init_ebony(void) { u8 fpga0_reg; unsigned long fpga0_adr; unsigned long long small_flash_base, large_flash_base; fpga0_adr = ioremap64(EBONY_FPGA_ADDR, 16); if (!fpga0_adr) return -ENOMEM; fpga0_reg = readb(fpga0_adr); iounmap64(fpga0_adr); if (EBONY_BOOT_SMALL_FLASH(fpga0_reg) && !EBONY_FLASH_SEL(fpga0_reg)) small_flash_base = EBONY_SMALL_FLASH_HIGH2; else if (EBONY_BOOT_SMALL_FLASH(fpga0_reg) && EBONY_FLASH_SEL(fpga0_reg)) small_flash_base = EBONY_SMALL_FLASH_HIGH1; else if (!EBONY_BOOT_SMALL_FLASH(fpga0_reg) && !EBONY_FLASH_SEL(fpga0_reg)) small_flash_base = EBONY_SMALL_FLASH_LOW2; else small_flash_base = EBONY_SMALL_FLASH_LOW1; if (EBONY_BOOT_SMALL_FLASH(fpga0_reg) && !EBONY_ONBRD_FLASH_EN(fpga0_reg)) large_flash_base = EBONY_LARGE_FLASH_LOW; else large_flash_base = EBONY_LARGE_FLASH_HIGH; ebony_small_map.phys = small_flash_base; ebony_small_map.virt = (unsigned long)ioremap64(small_flash_base, ebony_small_map.size); if (!ebony_small_map.virt) { printk("Failed to ioremap flash\n"); return -EIO; } simple_map_init(&ebony_small_map); flash = do_map_probe("map_rom", &ebony_small_map); if (flash) { flash->owner = THIS_MODULE; add_mtd_partitions(flash, ebony_small_partitions, ARRAY_SIZE(ebony_small_partitions)); } else { printk("map probe failed for flash\n"); return -ENXIO; } ebony_large_map.phys = large_flash_base; ebony_large_map.virt = (unsigned long)ioremap64(large_flash_base, ebony_large_map.size); if (!ebony_large_map.virt) { printk("Failed to ioremap flash\n"); return -EIO; } simple_map_init(&ebony_large_map); flash = do_map_probe("cfi_probe", &ebony_large_map); if (flash) { flash->owner = THIS_MODULE; add_mtd_partitions(flash, ebony_large_partitions, ARRAY_SIZE(ebony_large_partitions)); } else { printk("map probe failed for flash\n"); return -ENXIO; } return 0; } static void __exit cleanup_ebony(void) { if (flash) { del_mtd_partitions(flash); map_destroy(flash); } if (ebony_small_map.virt) { iounmap((void *)ebony_small_map.virt); ebony_small_map.virt = 0; } if (ebony_large_map.virt) { iounmap((void *)ebony_large_map.virt); ebony_large_map.virt = 0; } } module_init(init_ebony); module_exit(cleanup_ebony); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Matt Porter <mporter@mvista.com>"); MODULE_DESCRIPTION("MTD map and partitions for IBM 440GP Ebony boards"); |