59018b6d2a
Once upon a time, the MTD repository was using CVS. This patch therefore removes all usages of the no longer updated CVS keywords from the MTD code. This also includes code that printed them to the user. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
126 lines
3.1 KiB
C
126 lines
3.1 KiB
C
/*
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* NV-RAM memory access on autcpu12
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* (C) 2002 Thomas Gleixner (gleixner@autronix.de)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/ioport.h>
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#include <linux/init.h>
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#include <asm/io.h>
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#include <asm/sizes.h>
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#include <asm/hardware.h>
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#include <asm/arch/autcpu12.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/map.h>
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#include <linux/mtd/partitions.h>
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static struct mtd_info *sram_mtd;
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struct map_info autcpu12_sram_map = {
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.name = "SRAM",
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.size = 32768,
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.bankwidth = 4,
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.phys = 0x12000000,
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};
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static int __init init_autcpu12_sram (void)
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{
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int err, save0, save1;
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autcpu12_sram_map.virt = ioremap(0x12000000, SZ_128K);
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if (!autcpu12_sram_map.virt) {
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printk("Failed to ioremap autcpu12 NV-RAM space\n");
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err = -EIO;
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goto out;
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}
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simple_map_init(&autcpu_sram_map);
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/*
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* Check for 32K/128K
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* read ofs 0
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* read ofs 0x10000
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* Write complement to ofs 0x100000
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* Read and check result on ofs 0x0
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* Restore contents
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*/
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save0 = map_read32(&autcpu12_sram_map,0);
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save1 = map_read32(&autcpu12_sram_map,0x10000);
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map_write32(&autcpu12_sram_map,~save0,0x10000);
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/* if we find this pattern on 0x0, we have 32K size
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* restore contents and exit
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*/
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if ( map_read32(&autcpu12_sram_map,0) != save0) {
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map_write32(&autcpu12_sram_map,save0,0x0);
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goto map;
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}
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/* We have a 128K found, restore 0x10000 and set size
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* to 128K
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*/
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map_write32(&autcpu12_sram_map,save1,0x10000);
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autcpu12_sram_map.size = SZ_128K;
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map:
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sram_mtd = do_map_probe("map_ram", &autcpu12_sram_map);
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if (!sram_mtd) {
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printk("NV-RAM probe failed\n");
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err = -ENXIO;
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goto out_ioremap;
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}
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sram_mtd->owner = THIS_MODULE;
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sram_mtd->erasesize = 16;
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if (add_mtd_device(sram_mtd)) {
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printk("NV-RAM device addition failed\n");
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err = -ENOMEM;
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goto out_probe;
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}
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printk("NV-RAM device size %ldKiB registered on AUTCPU12\n",autcpu12_sram_map.size/SZ_1K);
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return 0;
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out_probe:
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map_destroy(sram_mtd);
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sram_mtd = 0;
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out_ioremap:
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iounmap((void *)autcpu12_sram_map.virt);
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out:
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return err;
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}
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static void __exit cleanup_autcpu12_maps(void)
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{
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if (sram_mtd) {
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del_mtd_device(sram_mtd);
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map_destroy(sram_mtd);
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iounmap((void *)autcpu12_sram_map.virt);
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}
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}
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module_init(init_autcpu12_sram);
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module_exit(cleanup_autcpu12_maps);
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MODULE_AUTHOR("Thomas Gleixner");
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MODULE_DESCRIPTION("autcpu12 NV-RAM map driver");
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MODULE_LICENSE("GPL");
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