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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/mtd/maps/arctic-mtd.c | |
download | kernel_goldelico_gta04-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip kernel_goldelico_gta04-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz kernel_goldelico_gta04-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.bz2 |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'drivers/mtd/maps/arctic-mtd.c')
-rw-r--r-- | drivers/mtd/maps/arctic-mtd.c | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/drivers/mtd/maps/arctic-mtd.c b/drivers/mtd/maps/arctic-mtd.c new file mode 100644 index 0000000..777276f --- /dev/null +++ b/drivers/mtd/maps/arctic-mtd.c @@ -0,0 +1,135 @@ +/* + * $Id: arctic-mtd.c,v 1.13 2004/11/04 13:24:14 gleixner Exp $ + * + * drivers/mtd/maps/arctic-mtd.c MTD mappings and partition tables for + * IBM 405LP Arctic boards. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * Copyright (C) 2002, International Business Machines Corporation + * All Rights Reserved. + * + * Bishop Brock + * IBM Research, Austin Center for Low-Power Computing + * bcbrock@us.ibm.com + * March 2002 + * + * modified for Arctic by, + * David Gibson + * IBM OzLabs, Canberra, Australia + * <arctic@gibson.dropbear.id.au> + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/types.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/ibm4xx.h> + +/* + * 0 : 0xFE00 0000 - 0xFEFF FFFF : Filesystem 1 (16MiB) + * 1 : 0xFF00 0000 - 0xFF4F FFFF : kernel (5.12MiB) + * 2 : 0xFF50 0000 - 0xFFF5 FFFF : Filesystem 2 (10.624MiB) (if non-XIP) + * 3 : 0xFFF6 0000 - 0xFFFF FFFF : PIBS Firmware (640KiB) + */ + +#define FFS1_SIZE 0x01000000 /* 16MiB */ +#define KERNEL_SIZE 0x00500000 /* 5.12MiB */ +#define FFS2_SIZE 0x00a60000 /* 10.624MiB */ +#define FIRMWARE_SIZE 0x000a0000 /* 640KiB */ + + +#define NAME "Arctic Linux Flash" +#define PADDR SUBZERO_BOOTFLASH_PADDR +#define BUSWIDTH 2 +#define SIZE SUBZERO_BOOTFLASH_SIZE +#define PARTITIONS 4 + +/* Flash memories on these boards are memory resources, accessed big-endian. */ + +{ + /* do nothing for now */ +} + +static struct map_info arctic_mtd_map = { + .name = NAME, + .size = SIZE, + .bankwidth = BUSWIDTH, + .phys = PADDR, +}; + +static struct mtd_info *arctic_mtd; + +static struct mtd_partition arctic_partitions[PARTITIONS] = { + { .name = "Filesystem", + .size = FFS1_SIZE, + .offset = 0,}, + { .name = "Kernel", + .size = KERNEL_SIZE, + .offset = FFS1_SIZE,}, + { .name = "Filesystem", + .size = FFS2_SIZE, + .offset = FFS1_SIZE + KERNEL_SIZE,}, + { .name = "Firmware", + .size = FIRMWARE_SIZE, + .offset = SUBZERO_BOOTFLASH_SIZE - FIRMWARE_SIZE,}, +}; + +static int __init +init_arctic_mtd(void) +{ + printk("%s: 0x%08x at 0x%08x\n", NAME, SIZE, PADDR); + + arctic_mtd_map.virt = ioremap(PADDR, SIZE); + + if (!arctic_mtd_map.virt) { + printk("%s: failed to ioremap 0x%x\n", NAME, PADDR); + return -EIO; + } + simple_map_init(&arctic_mtd_map); + + printk("%s: probing %d-bit flash bus\n", NAME, BUSWIDTH * 8); + arctic_mtd = do_map_probe("cfi_probe", &arctic_mtd_map); + + if (!arctic_mtd) + return -ENXIO; + + arctic_mtd->owner = THIS_MODULE; + + return add_mtd_partitions(arctic_mtd, arctic_partitions, PARTITIONS); +} + +static void __exit +cleanup_arctic_mtd(void) +{ + if (arctic_mtd) { + del_mtd_partitions(arctic_mtd); + map_destroy(arctic_mtd); + iounmap((void *) arctic_mtd_map.virt); + } +} + +module_init(init_arctic_mtd); +module_exit(cleanup_arctic_mtd); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("David Gibson <arctic@gibson.dropbear.id.au>"); +MODULE_DESCRIPTION("MTD map and partitions for IBM 405LP Arctic boards"); |