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Diffstat (limited to 'drivers/mtd/afs.c')
-rw-r--r--drivers/mtd/afs.c266
1 files changed, 0 insertions, 266 deletions
diff --git a/drivers/mtd/afs.c b/drivers/mtd/afs.c
deleted file mode 100644
index d61b7edfc938..000000000000
--- a/drivers/mtd/afs.c
+++ /dev/null
@@ -1,266 +0,0 @@
-/*======================================================================
-
- drivers/mtd/afs.c: ARM Flash Layout/Partitioning
-
- Copyright © 2000 ARM Limited
-
- 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
-
- This is access code for flashes using ARM's flash partitioning
- standards.
-
-======================================================================*/
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/init.h>
-
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/map.h>
-#include <linux/mtd/partitions.h>
-
-#define AFSV1_FOOTER_MAGIC 0xA0FFFF9F
-
-struct footer_v1 {
- u32 image_info_base; /* Address of first word of ImageFooter */
- u32 image_start; /* Start of area reserved by this footer */
- u32 signature; /* 'Magic' number proves it's a footer */
- u32 type; /* Area type: ARM Image, SIB, customer */
- u32 checksum; /* Just this structure */
-};
-
-struct image_info_v1 {
- u32 bootFlags; /* Boot flags, compression etc. */
- u32 imageNumber; /* Unique number, selects for boot etc. */
- u32 loadAddress; /* Address program should be loaded to */
- u32 length; /* Actual size of image */
- u32 address; /* Image is executed from here */
- char name[16]; /* Null terminated */
- u32 headerBase; /* Flash Address of any stripped header */
- u32 header_length; /* Length of header in memory */
- u32 headerType; /* AIF, RLF, s-record etc. */
- u32 checksum; /* Image checksum (inc. this struct) */
-};
-
-static u32 word_sum(void *words, int num)
-{
- u32 *p = words;
- u32 sum = 0;
-
- while (num--)
- sum += *p++;
-
- return sum;
-}
-
-static int
-afs_read_footer_v1(struct mtd_info *mtd, u_int *img_start, u_int *iis_start,
- u_int off, u_int mask)
-{
- struct footer_v1 fs;
- u_int ptr = off + mtd->erasesize - sizeof(fs);
- size_t sz;
- int ret;
-
- ret = mtd_read(mtd, ptr, sizeof(fs), &sz, (u_char *)&fs);
- if (ret >= 0 && sz != sizeof(fs))
- ret = -EINVAL;
-
- if (ret < 0) {
- printk(KERN_ERR "AFS: mtd read failed at 0x%x: %d\n",
- ptr, ret);
- return ret;
- }
-
- /*
- * Does it contain the magic number?
- */
- if (fs.signature != AFSV1_FOOTER_MAGIC)
- return 0;
-
- /*
- * Check the checksum.
- */
- if (word_sum(&fs, sizeof(fs) / sizeof(u32)) != 0xffffffff)
- return 0;
-
- /*
- * Don't touch the SIB.
- */
- if (fs.type == 2)
- return 0;
-
- *iis_start = fs.image_info_base & mask;
- *img_start = fs.image_start & mask;
-
- /*
- * Check the image info base. This can not
- * be located after the footer structure.
- */
- if (*iis_start >= ptr)
- return 0;
-
- /*
- * Check the start of this image. The image
- * data can not be located after this block.
- */
- if (*img_start > off)
- return 0;
-
- return 1;
-}
-
-static int
-afs_read_iis_v1(struct mtd_info *mtd, struct image_info_v1 *iis, u_int ptr)
-{
- size_t sz;
- int ret, i;
-
- memset(iis, 0, sizeof(*iis));
- ret = mtd_read(mtd, ptr, sizeof(*iis), &sz, (u_char *)iis);
- if (ret < 0)
- goto failed;
-
- if (sz != sizeof(*iis)) {
- ret = -EINVAL;
- goto failed;
- }
-
- ret = 0;
-
- /*
- * Validate the name - it must be NUL terminated.
- */
- for (i = 0; i < sizeof(iis->name); i++)
- if (iis->name[i] == '\0')
- break;
-
- if (i < sizeof(iis->name))
- ret = 1;
-
- return ret;
-
- failed:
- printk(KERN_ERR "AFS: mtd read failed at 0x%x: %d\n",
- ptr, ret);
- return ret;
-}
-
-static int parse_afs_partitions(struct mtd_info *mtd,
- const struct mtd_partition **pparts,
- struct mtd_part_parser_data *data)
-{
- struct mtd_partition *parts;
- u_int mask, off, idx, sz;
- int ret = 0;
- char *str;
-
- /*
- * This is the address mask; we use this to mask off out of
- * range address bits.
- */
- mask = mtd->size - 1;
-
- /*
- * First, calculate the size of the array we need for the
- * partition information. We include in this the size of
- * the strings.
- */
- for (idx = off = sz = 0; off < mtd->size; off += mtd->erasesize) {
- struct image_info_v1 iis;
- u_int iis_ptr, img_ptr;
-
- ret = afs_read_footer_v1(mtd, &img_ptr, &iis_ptr, off, mask);
- if (ret < 0)
- break;
- if (ret) {
- ret = afs_read_iis_v1(mtd, &iis, iis_ptr);
- if (ret < 0)
- break;
- if (ret == 0)
- continue;
-
- sz += sizeof(struct mtd_partition);
- sz += strlen(iis.name) + 1;
- idx += 1;
- }
- }
-
- if (!sz)
- return ret;
-
- parts = kzalloc(sz, GFP_KERNEL);
- if (!parts)
- return -ENOMEM;
-
- str = (char *)(parts + idx);
-
- /*
- * Identify the partitions
- */
- for (idx = off = 0; off < mtd->size; off += mtd->erasesize) {
- struct image_info_v1 iis;
- u_int iis_ptr, img_ptr;
-
- /* Read the footer. */
- ret = afs_read_footer_v1(mtd, &img_ptr, &iis_ptr, off, mask);
- if (ret < 0)
- break;
- if (ret == 0)
- continue;
-
- /* Read the image info block */
- ret = afs_read_iis_v1(mtd, &iis, iis_ptr);
- if (ret < 0)
- break;
- if (ret == 0)
- continue;
-
- strcpy(str, iis.name);
-
- parts[idx].name = str;
- parts[idx].size = (iis.length + mtd->erasesize - 1) & ~(mtd->erasesize - 1);
- parts[idx].offset = img_ptr;
- parts[idx].mask_flags = 0;
-
- printk(" mtd%d: at 0x%08x, %5lluKiB, %8u, %s\n",
- idx, img_ptr, parts[idx].size / 1024,
- iis.imageNumber, str);
-
- idx += 1;
- str = str + strlen(iis.name) + 1;
- }
-
- if (!idx) {
- kfree(parts);
- parts = NULL;
- }
-
- *pparts = parts;
- return idx ? idx : ret;
-}
-
-static struct mtd_part_parser afs_parser = {
- .parse_fn = parse_afs_partitions,
- .name = "afs",
-};
-module_mtd_part_parser(afs_parser);
-
-MODULE_AUTHOR("ARM Ltd");
-MODULE_DESCRIPTION("ARM Firmware Suite partition parser");
-MODULE_LICENSE("GPL");
generated by cgit (git 2.34.1) at 2024-05-07 13:13:28 +0000