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path: root/drivers/mtd/parsers/redboot.c
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Diffstat (limited to 'drivers/mtd/parsers/redboot.c')
-rw-r--r--drivers/mtd/parsers/redboot.c95
1 files changed, 43 insertions, 52 deletions
diff --git a/drivers/mtd/parsers/redboot.c b/drivers/mtd/parsers/redboot.c
index 957538d57725..3b55b676ca6b 100644
--- a/drivers/mtd/parsers/redboot.c
+++ b/drivers/mtd/parsers/redboot.c
@@ -1,24 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Parse RedBoot-style Flash Image System (FIS) tables and
* produce a Linux partition array to match.
*
* Copyright © 2001 Red Hat UK Limited
* Copyright © 2001-2010 David Woodhouse <dwmw2@infradead.org>
- *
- * 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/kernel.h>
@@ -31,15 +17,15 @@
#include <linux/module.h>
struct fis_image_desc {
- unsigned char name[16]; // Null terminated name
- uint32_t flash_base; // Address within FLASH of image
- uint32_t mem_base; // Address in memory where it executes
- uint32_t size; // Length of image
- uint32_t entry_point; // Execution entry point
- uint32_t data_length; // Length of actual data
- unsigned char _pad[256-(16+7*sizeof(uint32_t))];
- uint32_t desc_cksum; // Checksum over image descriptor
- uint32_t file_cksum; // Checksum over image data
+ unsigned char name[16]; // Null terminated name
+ u32 flash_base; // Address within FLASH of image
+ u32 mem_base; // Address in memory where it executes
+ u32 size; // Length of image
+ u32 entry_point; // Execution entry point
+ u32 data_length; // Length of actual data
+ unsigned char _pad[256 - (16 + 7 * sizeof(u32))];
+ u32 desc_cksum; // Checksum over image descriptor
+ u32 file_cksum; // Checksum over image data
};
struct fis_list {
@@ -59,6 +45,7 @@ static inline int redboot_checksum(struct fis_image_desc *img)
static void parse_redboot_of(struct mtd_info *master)
{
struct device_node *np;
+ struct device_node *npart;
u32 dirblock;
int ret;
@@ -66,7 +53,12 @@ static void parse_redboot_of(struct mtd_info *master)
if (!np)
return;
- ret = of_property_read_u32(np, "fis-index-block", &dirblock);
+ npart = of_get_child_by_name(np, "partitions");
+ if (!npart)
+ return;
+
+ ret = of_property_read_u32(npart, "fis-index-block", &dirblock);
+ of_node_put(npart);
if (ret)
return;
@@ -99,18 +91,18 @@ static int parse_redboot_partitions(struct mtd_info *master,
parse_redboot_of(master);
- if ( directory < 0 ) {
+ if (directory < 0) {
offset = master->size + directory * master->erasesize;
while (mtd_block_isbad(master, offset)) {
if (!offset) {
- nogood:
- printk(KERN_NOTICE "Failed to find a non-bad block to check for RedBoot partition table\n");
+nogood:
+ pr_notice("Failed to find a non-bad block to check for RedBoot partition table\n");
return -EIO;
}
offset -= master->erasesize;
}
} else {
- offset = directory * master->erasesize;
+ offset = (unsigned long) directory * master->erasesize;
while (mtd_block_isbad(master, offset)) {
offset += master->erasesize;
if (offset == master->size)
@@ -122,8 +114,8 @@ static int parse_redboot_partitions(struct mtd_info *master,
if (!buf)
return -ENOMEM;
- printk(KERN_NOTICE "Searching for RedBoot partition table in %s at offset 0x%lx\n",
- master->name, offset);
+ pr_notice("Searching for RedBoot partition table in %s at offset 0x%lx\n",
+ master->name, offset);
ret = mtd_read(master, offset, master->erasesize, &retlen,
(void *)buf);
@@ -159,14 +151,13 @@ static int parse_redboot_partitions(struct mtd_info *master,
&& swab32(buf[i].size) < master->erasesize)) {
int j;
/* Update numslots based on actual FIS directory size */
- numslots = swab32(buf[i].size) / sizeof (struct fis_image_desc);
+ numslots = swab32(buf[i].size) / sizeof(struct fis_image_desc);
for (j = 0; j < numslots; ++j) {
-
/* A single 0xff denotes a deleted entry.
* Two of them in a row is the end of the table.
*/
if (buf[j].name[0] == 0xff) {
- if (buf[j].name[1] == 0xff) {
+ if (buf[j].name[1] == 0xff) {
break;
} else {
continue;
@@ -193,8 +184,8 @@ static int parse_redboot_partitions(struct mtd_info *master,
}
if (i == numslots) {
/* Didn't find it */
- printk(KERN_NOTICE "No RedBoot partition table detected in %s\n",
- master->name);
+ pr_notice("No RedBoot partition table detected in %s\n",
+ master->name);
ret = 0;
goto out;
}
@@ -213,7 +204,7 @@ static int parse_redboot_partitions(struct mtd_info *master,
break;
new_fl = kmalloc(sizeof(struct fis_list), GFP_KERNEL);
- namelen += strlen(buf[i].name)+1;
+ namelen += strlen(buf[i].name) + 1;
if (!new_fl) {
ret = -ENOMEM;
goto out;
@@ -222,13 +213,13 @@ static int parse_redboot_partitions(struct mtd_info *master,
if (data && data->origin)
buf[i].flash_base -= data->origin;
else
- buf[i].flash_base &= master->size-1;
+ buf[i].flash_base &= master->size - 1;
/* I'm sure the JFFS2 code has done me permanent damage.
* I now think the following is _normal_
*/
prev = &fl;
- while(*prev && (*prev)->img->flash_base < new_fl->img->flash_base)
+ while (*prev && (*prev)->img->flash_base < new_fl->img->flash_base)
prev = &(*prev)->next;
new_fl->next = *prev;
*prev = new_fl;
@@ -248,7 +239,7 @@ static int parse_redboot_partitions(struct mtd_info *master,
}
}
#endif
- parts = kzalloc(sizeof(*parts)*nrparts + nulllen + namelen, GFP_KERNEL);
+ parts = kzalloc(sizeof(*parts) * nrparts + nulllen + namelen, GFP_KERNEL);
if (!parts) {
ret = -ENOMEM;
@@ -257,23 +248,22 @@ static int parse_redboot_partitions(struct mtd_info *master,
nullname = (char *)&parts[nrparts];
#ifdef CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED
- if (nulllen > 0) {
+ if (nulllen > 0)
strcpy(nullname, nullstring);
- }
#endif
names = nullname + nulllen;
- i=0;
+ i = 0;
#ifdef CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED
if (fl->img->flash_base) {
- parts[0].name = nullname;
- parts[0].size = fl->img->flash_base;
- parts[0].offset = 0;
+ parts[0].name = nullname;
+ parts[0].size = fl->img->flash_base;
+ parts[0].offset = 0;
i++;
}
#endif
- for ( ; i<nrparts; i++) {
+ for ( ; i < nrparts; i++) {
parts[i].size = fl->img->size;
parts[i].offset = fl->img->flash_base;
parts[i].name = names;
@@ -281,17 +271,17 @@ static int parse_redboot_partitions(struct mtd_info *master,
strcpy(names, fl->img->name);
#ifdef CONFIG_MTD_REDBOOT_PARTS_READONLY
if (!memcmp(names, "RedBoot", 8) ||
- !memcmp(names, "RedBoot config", 15) ||
- !memcmp(names, "FIS directory", 14)) {
+ !memcmp(names, "RedBoot config", 15) ||
+ !memcmp(names, "FIS directory", 14)) {
parts[i].mask_flags = MTD_WRITEABLE;
}
#endif
- names += strlen(names)+1;
+ names += strlen(names) + 1;
#ifdef CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED
- if(fl->next && fl->img->flash_base + fl->img->size + master->erasesize <= fl->next->img->flash_base) {
+ if (fl->next && fl->img->flash_base + fl->img->size + master->erasesize <= fl->next->img->flash_base) {
i++;
- parts[i].offset = parts[i-1].size + parts[i-1].offset;
+ parts[i].offset = parts[i - 1].size + parts[i - 1].offset;
parts[i].size = fl->next->img->flash_base - parts[i].offset;
parts[i].name = nullname;
}
@@ -305,6 +295,7 @@ static int parse_redboot_partitions(struct mtd_info *master,
out:
while (fl) {
struct fis_list *old = fl;
+
fl = fl->next;
kfree(old);
}
generated by cgit (git 2.34.1) at 2025-12-24 21:46:52 +0000