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/*
* Copyright (c) 2011 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include <confuse.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include "list.h"
#include "genimage.h"
struct flash_image {
};
static int flash_generate(struct image *image)
{
struct partition *part;
unsigned long long end = 0;
int ret;
ret = prepare_image(image, image->size);
if (ret < 0)
return ret;
list_for_each_entry(part, &image->partitions, list) {
struct image *child = NULL;
image_info(image, "writing image partition '%s' (0x%llx@0x%llx)\n",
part->name, part->size, part->offset);
if (part->offset > end) {
ret = insert_image(image, NULL, part->offset - end, end, 0xFF);
if (ret) {
image_error(image, "failed to pad image to size %lld\n",
part->offset);
return ret;
}
}
if (part->image)
child = image_get(part->image);
ret = insert_image(image, child, part->size, part->offset, 0xFF);
if (ret) {
image_error(image, "failed to write image partition '%s'\n",
part->name);
return ret;
}
end = part->offset + part->size;
}
return 0;
}
static int flash_setup(struct image *image, cfg_t *cfg)
{
struct flash_image *f = xzalloc(sizeof(*f));
struct partition *part;
int last = 0;
unsigned long long partsize = 0, flashsize;
image->handler_priv = f;
if (!image->flash_type) {
image_error(image, "no flash type given\n");
return -EINVAL;
}
flashsize = (unsigned long long)image->flash_type->pebsize * image->flash_type->numpebs;
list_for_each_entry(part, &image->partitions, list) {
if (last) {
image_error(image, "only last partition may have size 0\n");
return -EINVAL;
}
if (!part->size) {
last = 1;
if (partsize > flashsize)
goto err_exceed;
part->size = flashsize - partsize;
}
if (part->size % image->flash_type->pebsize) {
image_error(image, "part %s size (%lld) must be a "
"multiple of erase block size (%i bytes)\n",
part->name, part->size, image->flash_type->pebsize);
return -EINVAL;
}
if (part->offset % image->flash_type->pebsize) {
image_error(image, "part %s offset (%lld) must be a"
"multiple of erase block size (%i bytes)\n",
part->name, part->offset, image->flash_type->pebsize);
return -EINVAL;
}
if (part->offset) {
if (partsize > part->offset) {
image_error(image, "part %s overlaps with previous partition\n",
part->name);
return -EINVAL;
}
} else {
part->offset = partsize;
}
if (part->image) {
struct image *child = image_get(part->image);
if (!child) {
image_error(image, "could not find %s\n",
part->image);
return -EINVAL;
}
if (child->size > part->size) {
image_error(image, "part %s size (%lld) too small for %s (%lld)\n",
part->name, part->size, child->file, child->size);
return -EINVAL;
}
}
partsize = part->offset + part->size;
}
if (partsize > flashsize) {
err_exceed:
image_error(image, "size of partitions (%lld) exceeds flash size (%lld)\n",
partsize, flashsize);
return -EINVAL;
}
if (!image->size)
image->size = partsize;
return 0;
}
static cfg_opt_t flash_opts[] = {
CFG_END()
};
struct image_handler flash_handler = {
.type = "flash",
.no_rootpath = cfg_true,
.generate = flash_generate,
.setup = flash_setup,
.opts = flash_opts,
};
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