/* * Mapping for Ocotea user flash * * Matt Porter <mporter@kernel.crashing.org> * * Copyright 2002-2004 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 <asm/io.h> #include <asm/ibm44x.h> #include <platforms/4xx/ocotea.h> static struct mtd_info *flash; static struct map_info ocotea_small_map = { .name = "Ocotea small flash", .size = OCOTEA_SMALL_FLASH_SIZE, .buswidth = 1, }; static struct map_info ocotea_large_map = { .name = "Ocotea large flash", .size = OCOTEA_LARGE_FLASH_SIZE, .buswidth = 1, }; static struct mtd_partition ocotea_small_partitions[] = { { .name = "pibs", .offset = 0x0, .size = 0x100000, } }; static struct mtd_partition ocotea_large_partitions[] = { { .name = "fs", .offset = 0, .size = 0x300000, }, { .name = "firmware", .offset = 0x300000, .size = 0x100000, } }; int __init init_ocotea(void) { u8 fpga0_reg; u8 *fpga0_adr; unsigned long long small_flash_base, large_flash_base; fpga0_adr = ioremap64(OCOTEA_FPGA_ADDR, 16); if (!fpga0_adr) return -ENOMEM; fpga0_reg = readb((unsigned long)fpga0_adr); iounmap(fpga0_adr); if (OCOTEA_BOOT_LARGE_FLASH(fpga0_reg)) { small_flash_base = OCOTEA_SMALL_FLASH_HIGH; large_flash_base = OCOTEA_LARGE_FLASH_LOW; } else { small_flash_base = OCOTEA_SMALL_FLASH_LOW; large_flash_base = OCOTEA_LARGE_FLASH_HIGH; } ocotea_small_map.phys = small_flash_base; ocotea_small_map.virt = ioremap64(small_flash_base, ocotea_small_map.size); if (!ocotea_small_map.virt) { printk("Failed to ioremap flash\n"); return -EIO; } simple_map_init(&ocotea_small_map); flash = do_map_probe("map_rom", &ocotea_small_map); if (flash) { flash->owner = THIS_MODULE; add_mtd_partitions(flash, ocotea_small_partitions, ARRAY_SIZE(ocotea_small_partitions)); } else { printk("map probe failed for flash\n"); iounmap(ocotea_small_map.virt); return -ENXIO; } ocotea_large_map.phys = large_flash_base; ocotea_large_map.virt = ioremap64(large_flash_base, ocotea_large_map.size); if (!ocotea_large_map.virt) { printk("Failed to ioremap flash\n"); iounmap(ocotea_small_map.virt); return -EIO; } simple_map_init(&ocotea_large_map); flash = do_map_probe("cfi_probe", &ocotea_large_map); if (flash) { flash->owner = THIS_MODULE; add_mtd_partitions(flash, ocotea_large_partitions, ARRAY_SIZE(ocotea_large_partitions)); } else { printk("map probe failed for flash\n"); iounmap(ocotea_small_map.virt); iounmap(ocotea_large_map.virt); return -ENXIO; } return 0; } static void __exit cleanup_ocotea(void) { if (flash) { del_mtd_partitions(flash); map_destroy(flash); } if (ocotea_small_map.virt) { iounmap((void *)ocotea_small_map.virt); ocotea_small_map.virt = 0; } if (ocotea_large_map.virt) { iounmap((void *)ocotea_large_map.virt); ocotea_large_map.virt = 0; } } module_init(init_ocotea); module_exit(cleanup_ocotea); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Matt Porter <mporter@kernel.crashing.org>"); MODULE_DESCRIPTION("MTD map and partitions for IBM 440GX Ocotea boards");