summaryrefslogtreecommitdiffstats
path: root/drivers/mtd/maps/bcm963xx-flash.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/mtd/maps/bcm963xx-flash.c')
-rw-r--r--drivers/mtd/maps/bcm963xx-flash.c277
1 files changed, 0 insertions, 277 deletions
diff --git a/drivers/mtd/maps/bcm963xx-flash.c b/drivers/mtd/maps/bcm963xx-flash.c
deleted file mode 100644
index 736ca10ca9f..00000000000
--- a/drivers/mtd/maps/bcm963xx-flash.c
+++ /dev/null
@@ -1,277 +0,0 @@
-/*
- * Copyright © 2006-2008 Florian Fainelli <florian@openwrt.org>
- * Mike Albon <malbon@openwrt.org>
- * Copyright © 2009-2010 Daniel Dickinson <openwrt@cshore.neomailbox.net>
- *
- * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <linux/mtd/map.h>
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/partitions.h>
-#include <linux/vmalloc.h>
-#include <linux/platform_device.h>
-#include <linux/io.h>
-
-#include <asm/mach-bcm63xx/bcm963xx_tag.h>
-
-#define BCM63XX_BUSWIDTH 2 /* Buswidth */
-#define BCM63XX_EXTENDED_SIZE 0xBFC00000 /* Extended flash address */
-
-#define PFX KBUILD_MODNAME ": "
-
-static struct mtd_partition *parsed_parts;
-
-static struct mtd_info *bcm963xx_mtd_info;
-
-static struct map_info bcm963xx_map = {
- .name = "bcm963xx",
- .bankwidth = BCM63XX_BUSWIDTH,
-};
-
-static int parse_cfe_partitions(struct mtd_info *master,
- struct mtd_partition **pparts)
-{
- /* CFE, NVRAM and global Linux are always present */
- int nrparts = 3, curpart = 0;
- struct bcm_tag *buf;
- struct mtd_partition *parts;
- int ret;
- size_t retlen;
- unsigned int rootfsaddr, kerneladdr, spareaddr;
- unsigned int rootfslen, kernellen, sparelen, totallen;
- int namelen = 0;
- int i;
- char *boardid;
- char *tagversion;
-
- /* Allocate memory for buffer */
- buf = vmalloc(sizeof(struct bcm_tag));
- if (!buf)
- return -ENOMEM;
-
- /* Get the tag */
- ret = master->read(master, master->erasesize, sizeof(struct bcm_tag),
- &retlen, (void *)buf);
- if (retlen != sizeof(struct bcm_tag)) {
- vfree(buf);
- return -EIO;
- }
-
- sscanf(buf->kernel_address, "%u", &kerneladdr);
- sscanf(buf->kernel_length, "%u", &kernellen);
- sscanf(buf->total_length, "%u", &totallen);
- tagversion = &(buf->tag_version[0]);
- boardid = &(buf->board_id[0]);
-
- printk(KERN_INFO PFX "CFE boot tag found with version %s "
- "and board type %s\n", tagversion, boardid);
-
- kerneladdr = kerneladdr - BCM63XX_EXTENDED_SIZE;
- rootfsaddr = kerneladdr + kernellen;
- spareaddr = roundup(totallen, master->erasesize) + master->erasesize;
- sparelen = master->size - spareaddr - master->erasesize;
- rootfslen = spareaddr - rootfsaddr;
-
- /* Determine number of partitions */
- namelen = 8;
- if (rootfslen > 0) {
- nrparts++;
- namelen += 6;
- };
- if (kernellen > 0) {
- nrparts++;
- namelen += 6;
- };
-
- /* Ask kernel for more memory */
- parts = kzalloc(sizeof(*parts) * nrparts + 10 * nrparts, GFP_KERNEL);
- if (!parts) {
- vfree(buf);
- return -ENOMEM;
- };
-
- /* Start building partition list */
- parts[curpart].name = "CFE";
- parts[curpart].offset = 0;
- parts[curpart].size = master->erasesize;
- curpart++;
-
- if (kernellen > 0) {
- parts[curpart].name = "kernel";
- parts[curpart].offset = kerneladdr;
- parts[curpart].size = kernellen;
- curpart++;
- };
-
- if (rootfslen > 0) {
- parts[curpart].name = "rootfs";
- parts[curpart].offset = rootfsaddr;
- parts[curpart].size = rootfslen;
- if (sparelen > 0)
- parts[curpart].size += sparelen;
- curpart++;
- };
-
- parts[curpart].name = "nvram";
- parts[curpart].offset = master->size - master->erasesize;
- parts[curpart].size = master->erasesize;
-
- /* Global partition "linux" to make easy firmware upgrade */
- curpart++;
- parts[curpart].name = "linux";
- parts[curpart].offset = parts[0].size;
- parts[curpart].size = master->size - parts[0].size - parts[3].size;
-
- for (i = 0; i < nrparts; i++)
- printk(KERN_INFO PFX "Partition %d is %s offset %lx and "
- "length %lx\n", i, parts[i].name,
- (long unsigned int)(parts[i].offset),
- (long unsigned int)(parts[i].size));
-
- printk(KERN_INFO PFX "Spare partition is %x offset and length %x\n",
- spareaddr, sparelen);
- *pparts = parts;
- vfree(buf);
-
- return nrparts;
-};
-
-static int bcm963xx_detect_cfe(struct mtd_info *master)
-{
- int idoffset = 0x4e0;
- static char idstring[8] = "CFE1CFE1";
- char buf[9];
- int ret;
- size_t retlen;
-
- ret = master->read(master, idoffset, 8, &retlen, (void *)buf);
- buf[retlen] = 0;
- printk(KERN_INFO PFX "Read Signature value of %s\n", buf);
-
- return strncmp(idstring, buf, 8);
-}
-
-static int bcm963xx_probe(struct platform_device *pdev)
-{
- int err = 0;
- int parsed_nr_parts = 0;
- char *part_type;
- struct resource *r;
-
- r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!r) {
- dev_err(&pdev->dev, "no resource supplied\n");
- return -ENODEV;
- }
-
- bcm963xx_map.phys = r->start;
- bcm963xx_map.size = resource_size(r);
- bcm963xx_map.virt = ioremap(r->start, resource_size(r));
- if (!bcm963xx_map.virt) {
- dev_err(&pdev->dev, "failed to ioremap\n");
- return -EIO;
- }
-
- dev_info(&pdev->dev, "0x%08lx at 0x%08x\n",
- bcm963xx_map.size, bcm963xx_map.phys);
-
- simple_map_init(&bcm963xx_map);
-
- bcm963xx_mtd_info = do_map_probe("cfi_probe", &bcm963xx_map);
- if (!bcm963xx_mtd_info) {
- dev_err(&pdev->dev, "failed to probe using CFI\n");
- bcm963xx_mtd_info = do_map_probe("jedec_probe", &bcm963xx_map);
- if (bcm963xx_mtd_info)
- goto probe_ok;
- dev_err(&pdev->dev, "failed to probe using JEDEC\n");
- err = -EIO;
- goto err_probe;
- }
-
-probe_ok:
- bcm963xx_mtd_info->owner = THIS_MODULE;
-
- /* This is mutually exclusive */
- if (bcm963xx_detect_cfe(bcm963xx_mtd_info) == 0) {
- dev_info(&pdev->dev, "CFE bootloader detected\n");
- if (parsed_nr_parts == 0) {
- int ret = parse_cfe_partitions(bcm963xx_mtd_info,
- &parsed_parts);
- if (ret > 0) {
- part_type = "CFE";
- parsed_nr_parts = ret;
- }
- }
- } else {
- dev_info(&pdev->dev, "unsupported bootloader\n");
- err = -ENODEV;
- goto err_probe;
- }
-
- return mtd_device_register(bcm963xx_mtd_info, parsed_parts,
- parsed_nr_parts);
-
-err_probe:
- iounmap(bcm963xx_map.virt);
- return err;
-}
-
-static int bcm963xx_remove(struct platform_device *pdev)
-{
- if (bcm963xx_mtd_info) {
- mtd_device_unregister(bcm963xx_mtd_info);
- map_destroy(bcm963xx_mtd_info);
- }
-
- if (bcm963xx_map.virt) {
- iounmap(bcm963xx_map.virt);
- bcm963xx_map.virt = 0;
- }
-
- return 0;
-}
-
-static struct platform_driver bcm63xx_mtd_dev = {
- .probe = bcm963xx_probe,
- .remove = bcm963xx_remove,
- .driver = {
- .name = "bcm963xx-flash",
- .owner = THIS_MODULE,
- },
-};
-
-static int __init bcm963xx_mtd_init(void)
-{
- return platform_driver_register(&bcm63xx_mtd_dev);
-}
-
-static void __exit bcm963xx_mtd_exit(void)
-{
- platform_driver_unregister(&bcm63xx_mtd_dev);
-}
-
-module_init(bcm963xx_mtd_init);
-module_exit(bcm963xx_mtd_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Broadcom BCM63xx MTD driver for CFE and RedBoot");
-MODULE_AUTHOR("Daniel Dickinson <openwrt@cshore.neomailbox.net>");
-MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
-MODULE_AUTHOR("Mike Albon <malbon@openwrt.org>");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-14 02:23:17 +0000