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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 | /* * $Id: wr_sbc82xx_flash.c,v 1.5 2004/07/15 14:52:02 dwmw2 Exp $ * * Map for flash chips on Wind River PowerQUICC II SBC82xx board. * * Copyright (C) 2004 Red Hat, Inc. * * Author: David Woodhouse <dwmw2@infradead.org> * */ #include <linux/module.h> #include <linux/types.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/slab.h> #include <asm/io.h> #include <linux/mtd/mtd.h> #include <linux/mtd/map.h> #include <linux/config.h> #include <linux/mtd/partitions.h> #include <asm/immap_cpm2.h> static struct mtd_info *sbcmtd[3]; static struct mtd_partition *sbcmtd_parts[3]; struct map_info sbc82xx_flash_map[3] = { {.name = "Boot flash"}, {.name = "Alternate boot flash"}, {.name = "User flash"} }; static struct mtd_partition smallflash_parts[] = { { .name = "space", .size = 0x100000, .offset = 0, }, { .name = "bootloader", .size = MTDPART_SIZ_FULL, .offset = MTDPART_OFS_APPEND, } }; static struct mtd_partition bigflash_parts[] = { { .name = "bootloader", .size = 0x00100000, .offset = 0, }, { .name = "file system", .size = 0x01f00000, .offset = MTDPART_OFS_APPEND, }, { .name = "boot config", .size = 0x00100000, .offset = MTDPART_OFS_APPEND, }, { .name = "space", .size = 0x01f00000, .offset = MTDPART_OFS_APPEND, } }; static const char *part_probes[] __initdata = {"cmdlinepart", "RedBoot", NULL}; #define init_sbc82xx_one_flash(map, br, or) \ do { \ (map).phys = (br & 1) ? (br & 0xffff8000) : 0; \ (map).size = (br & 1) ? (~(or & 0xffff8000) + 1) : 0; \ switch (br & 0x00001800) { \ case 0x00000000: \ case 0x00000800: (map).bankwidth = 1; break; \ case 0x00001000: (map).bankwidth = 2; break; \ case 0x00001800: (map).bankwidth = 4; break; \ } \ } while (0); int __init init_sbc82xx_flash(void) { volatile memctl_cpm2_t *mc = &cpm2_immr->im_memctl; int bigflash; int i; #ifdef CONFIG_SBC8560 mc = ioremap(0xff700000 + 0x5000, sizeof(memctl_cpm2_t)); #else mc = &cpm2_immr->im_memctl; #endif bigflash = 1; if ((mc->memc_br0 & 0x00001800) == 0x00001800) bigflash = 0; init_sbc82xx_one_flash(sbc82xx_flash_map[0], mc->memc_br0, mc->memc_or0); init_sbc82xx_one_flash(sbc82xx_flash_map[1], mc->memc_br6, mc->memc_or6); init_sbc82xx_one_flash(sbc82xx_flash_map[2], mc->memc_br1, mc->memc_or1); #ifdef CONFIG_SBC8560 iounmap((void *) mc); #endif for (i=0; i<3; i++) { int8_t flashcs[3] = { 0, 6, 1 }; int nr_parts; printk(KERN_NOTICE "PowerQUICC II %s (%ld MiB on CS%d", sbc82xx_flash_map[i].name, (sbc82xx_flash_map[i].size >> 20), flashcs[i]); if (!sbc82xx_flash_map[i].phys) { /* We know it can't be at zero. */ printk("): disabled by bootloader.\n"); continue; } printk(" at %08lx)\n", sbc82xx_flash_map[i].phys); sbc82xx_flash_map[i].virt = (unsigned long)ioremap(sbc82xx_flash_map[i].phys, sbc82xx_flash_map[i].size); if (!sbc82xx_flash_map[i].virt) { printk("Failed to ioremap\n"); continue; } simple_map_init(&sbc82xx_flash_map[i]); sbcmtd[i] = do_map_probe("cfi_probe", &sbc82xx_flash_map[i]); if (!sbcmtd[i]) continue; sbcmtd[i]->owner = THIS_MODULE; nr_parts = parse_mtd_partitions(sbcmtd[i], part_probes, &sbcmtd_parts[i], 0); if (nr_parts > 0) { add_mtd_partitions (sbcmtd[i], sbcmtd_parts[i], nr_parts); continue; } /* No partitioning detected. Use default */ if (i == 2) { add_mtd_device(sbcmtd[i]); } else if (i == bigflash) { add_mtd_partitions (sbcmtd[i], bigflash_parts, ARRAY_SIZE(bigflash_parts)); } else { add_mtd_partitions (sbcmtd[i], smallflash_parts, ARRAY_SIZE(smallflash_parts)); } } return 0; } static void __exit cleanup_sbc82xx_flash(void) { int i; for (i=0; i<3; i++) { if (!sbcmtd[i]) continue; if (i<2 || sbcmtd_parts[i]) del_mtd_partitions(sbcmtd[i]); else del_mtd_device(sbcmtd[i]); kfree(sbcmtd_parts[i]); map_destroy(sbcmtd[i]); iounmap((void *)sbc82xx_flash_map[i].virt); sbc82xx_flash_map[i].virt = 0; } } module_init(init_sbc82xx_flash); module_exit(cleanup_sbc82xx_flash); MODULE_LICENSE("GPL"); MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>"); MODULE_DESCRIPTION("Flash map driver for WindRiver PowerQUICC II"); |