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Diffstat (limited to 'ANDROID_3.4.5/drivers/mtd/bcm63xxpart.c')
-rw-r--r--ANDROID_3.4.5/drivers/mtd/bcm63xxpart.c222
1 files changed, 0 insertions, 222 deletions
diff --git a/ANDROID_3.4.5/drivers/mtd/bcm63xxpart.c b/ANDROID_3.4.5/drivers/mtd/bcm63xxpart.c
deleted file mode 100644
index 608321ee..00000000
--- a/ANDROID_3.4.5/drivers/mtd/bcm63xxpart.c
+++ /dev/null
@@ -1,222 +0,0 @@
-/*
- * BCM63XX CFE image tag parser
- *
- * Copyright © 2006-2008 Florian Fainelli <florian@openwrt.org>
- * Mike Albon <malbon@openwrt.org>
- * Copyright © 2009-2010 Daniel Dickinson <openwrt@cshore.neomailbox.net>
- * Copyright © 2011 Jonas Gorski <jonas.gorski@gmail.com>
- *
- * 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
- *
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/crc32.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/partitions.h>
-
-#include <asm/mach-bcm63xx/bcm963xx_tag.h>
-#include <asm/mach-bcm63xx/board_bcm963xx.h>
-
-#define BCM63XX_EXTENDED_SIZE 0xBFC00000 /* Extended flash address */
-
-#define BCM63XX_MIN_CFE_SIZE 0x10000 /* always at least 64KiB */
-#define BCM63XX_MIN_NVRAM_SIZE 0x10000 /* always at least 64KiB */
-
-#define BCM63XX_CFE_MAGIC_OFFSET 0x4e0
-
-static int bcm63xx_detect_cfe(struct mtd_info *master)
-{
- char buf[9];
- int ret;
- size_t retlen;
-
- ret = mtd_read(master, BCM963XX_CFE_VERSION_OFFSET, 5, &retlen,
- (void *)buf);
- buf[retlen] = 0;
-
- if (ret)
- return ret;
-
- if (strncmp("cfe-v", buf, 5) == 0)
- return 0;
-
- /* very old CFE's do not have the cfe-v string, so check for magic */
- ret = mtd_read(master, BCM63XX_CFE_MAGIC_OFFSET, 8, &retlen,
- (void *)buf);
- buf[retlen] = 0;
-
- return strncmp("CFE1CFE1", buf, 8);
-}
-
-static int bcm63xx_parse_cfe_partitions(struct mtd_info *master,
- struct mtd_partition **pparts,
- struct mtd_part_parser_data *data)
-{
- /* 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;
- unsigned int cfelen, nvramlen;
- int namelen = 0;
- int i;
- u32 computed_crc;
-
- if (bcm63xx_detect_cfe(master))
- return -EINVAL;
-
- cfelen = max_t(uint32_t, master->erasesize, BCM63XX_MIN_CFE_SIZE);
- nvramlen = max_t(uint32_t, master->erasesize, BCM63XX_MIN_NVRAM_SIZE);
-
- /* Allocate memory for buffer */
- buf = vmalloc(sizeof(struct bcm_tag));
- if (!buf)
- return -ENOMEM;
-
- /* Get the tag */
- ret = mtd_read(master, cfelen, sizeof(struct bcm_tag), &retlen,
- (void *)buf);
-
- if (retlen != sizeof(struct bcm_tag)) {
- vfree(buf);
- return -EIO;
- }
-
- computed_crc = crc32_le(IMAGETAG_CRC_START, (u8 *)buf,
- offsetof(struct bcm_tag, header_crc));
- if (computed_crc == buf->header_crc) {
- char *boardid = &(buf->board_id[0]);
- char *tagversion = &(buf->tag_version[0]);
-
- sscanf(buf->kernel_address, "%u", &kerneladdr);
- sscanf(buf->kernel_length, "%u", &kernellen);
- sscanf(buf->total_length, "%u", &totallen);
-
- pr_info("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) + cfelen;
- sparelen = master->size - spareaddr - nvramlen;
- rootfslen = spareaddr - rootfsaddr;
- } else {
- pr_warn("CFE boot tag CRC invalid (expected %08x, actual %08x)\n",
- buf->header_crc, computed_crc);
- kernellen = 0;
- rootfslen = 0;
- rootfsaddr = 0;
- spareaddr = cfelen;
- sparelen = master->size - cfelen - nvramlen;
- }
-
- /* 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 = cfelen;
- 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 - nvramlen;
- parts[curpart].size = nvramlen;
-
- /* Global partition "linux" to make easy firmware upgrade */
- curpart++;
- parts[curpart].name = "linux";
- parts[curpart].offset = cfelen;
- parts[curpart].size = master->size - cfelen - nvramlen;
-
- for (i = 0; i < nrparts; i++)
- pr_info("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));
-
- pr_info("Spare partition is offset %x and length %x\n", spareaddr,
- sparelen);
-
- *pparts = parts;
- vfree(buf);
-
- return nrparts;
-};
-
-static struct mtd_part_parser bcm63xx_cfe_parser = {
- .owner = THIS_MODULE,
- .parse_fn = bcm63xx_parse_cfe_partitions,
- .name = "bcm63xxpart",
-};
-
-static int __init bcm63xx_cfe_parser_init(void)
-{
- return register_mtd_parser(&bcm63xx_cfe_parser);
-}
-
-static void __exit bcm63xx_cfe_parser_exit(void)
-{
- deregister_mtd_parser(&bcm63xx_cfe_parser);
-}
-
-module_init(bcm63xx_cfe_parser_init);
-module_exit(bcm63xx_cfe_parser_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Daniel Dickinson <openwrt@cshore.neomailbox.net>");
-MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
-MODULE_AUTHOR("Mike Albon <malbon@openwrt.org>");
-MODULE_AUTHOR("Jonas Gorski <jonas.gorski@gmail.com");
-MODULE_DESCRIPTION("MTD partitioning for BCM63XX CFE bootloaders");