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Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
127 lines
3.5 KiB
C
127 lines
3.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/* netsc520.c -- MTD map driver for AMD NetSc520 Demonstration Board
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*
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* Copyright (C) 2001 Mark Langsdorf (mark.langsdorf@amd.com)
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* based on sc520cdp.c by Sysgo Real-Time Solutions GmbH
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*
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* The NetSc520 is a demonstration board for the Elan Sc520 processor available
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* from AMD. It has a single back of 16 megs of 32-bit Flash ROM and another
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* 16 megs of SDRAM.
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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/init.h>
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#include <asm/io.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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/*
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** The single, 16 megabyte flash bank is divided into four virtual
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** partitions. The first partition is 768 KiB and is intended to
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** store the kernel image loaded by the bootstrap loader. The second
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** partition is 256 KiB and holds the BIOS image. The third
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** partition is 14.5 MiB and is intended for the flash file system
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** image. The last partition is 512 KiB and contains another copy
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** of the BIOS image and the reset vector.
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**
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** Only the third partition should be mounted. The first partition
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** should not be mounted, but it can erased and written to using the
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** MTD character routines. The second and fourth partitions should
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** not be touched - it is possible to corrupt the BIOS image by
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** mounting these partitions, and potentially the board will not be
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** recoverable afterwards.
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*/
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/* partition_info gives details on the logical partitions that the split the
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* single flash device into. If the size if zero we use up to the end of the
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* device. */
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static const struct mtd_partition partition_info[] = {
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{
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.name = "NetSc520 boot kernel",
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.offset = 0,
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.size = 0xc0000
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},
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{
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.name = "NetSc520 Low BIOS",
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.offset = 0xc0000,
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.size = 0x40000
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},
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{
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.name = "NetSc520 file system",
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.offset = 0x100000,
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.size = 0xe80000
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},
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{
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.name = "NetSc520 High BIOS",
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.offset = 0xf80000,
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.size = 0x80000
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},
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};
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#define NUM_PARTITIONS ARRAY_SIZE(partition_info)
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#define WINDOW_SIZE 0x00100000
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#define WINDOW_ADDR 0x00200000
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static struct map_info netsc520_map = {
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.name = "netsc520 Flash Bank",
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.size = WINDOW_SIZE,
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.bankwidth = 4,
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.phys = WINDOW_ADDR,
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};
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#define NUM_FLASH_BANKS ARRAY_SIZE(netsc520_map)
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static struct mtd_info *mymtd;
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static int __init init_netsc520(void)
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{
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printk(KERN_NOTICE "NetSc520 flash device: 0x%Lx at 0x%Lx\n",
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(unsigned long long)netsc520_map.size,
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(unsigned long long)netsc520_map.phys);
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netsc520_map.virt = ioremap_nocache(netsc520_map.phys, netsc520_map.size);
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if (!netsc520_map.virt) {
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printk("Failed to ioremap_nocache\n");
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return -EIO;
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}
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simple_map_init(&netsc520_map);
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mymtd = do_map_probe("cfi_probe", &netsc520_map);
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if(!mymtd)
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mymtd = do_map_probe("map_ram", &netsc520_map);
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if(!mymtd)
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mymtd = do_map_probe("map_rom", &netsc520_map);
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if (!mymtd) {
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iounmap(netsc520_map.virt);
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return -ENXIO;
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}
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mymtd->owner = THIS_MODULE;
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mtd_device_register(mymtd, partition_info, NUM_PARTITIONS);
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return 0;
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}
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static void __exit cleanup_netsc520(void)
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{
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if (mymtd) {
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mtd_device_unregister(mymtd);
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map_destroy(mymtd);
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}
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if (netsc520_map.virt) {
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iounmap(netsc520_map.virt);
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netsc520_map.virt = NULL;
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}
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}
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module_init(init_netsc520);
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module_exit(cleanup_netsc520);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Mark Langsdorf <mark.langsdorf@amd.com>");
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MODULE_DESCRIPTION("MTD map driver for AMD NetSc520 Demonstration Board");
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