77 lines
2.0 KiB
C
77 lines
2.0 KiB
C
/*
|
|
* fmap_from_fmd.c, tool to distill flashmap descriptors into raw FMAP sections
|
|
*
|
|
* Copyright (C) 2015 Google, Inc.
|
|
*
|
|
* 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; version 2 of the License.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include "fmap_from_fmd.h"
|
|
|
|
#include "common.h"
|
|
|
|
#include <assert.h>
|
|
#include <string.h>
|
|
|
|
static bool fmap_append_fmd_node(struct fmap **flashmap,
|
|
const struct flashmap_descriptor *section,
|
|
unsigned absolute_watermark) {
|
|
if (strlen(section->name) >= FMAP_STRLEN) {
|
|
ERROR("Section name ('%s') exceeds %d character FMAP format limit\n",
|
|
section->name, FMAP_STRLEN - 1);
|
|
return false;
|
|
}
|
|
|
|
absolute_watermark += section->offset;
|
|
|
|
if (fmap_append_area(flashmap, absolute_watermark, section->size,
|
|
(uint8_t *)section->name, 0) < 0) {
|
|
ERROR("Failed to insert section '%s' into FMAP\n",
|
|
section->name);
|
|
return false;
|
|
}
|
|
|
|
fmd_foreach_child(subsection, section) {
|
|
if (!fmap_append_fmd_node(flashmap, subsection,
|
|
absolute_watermark))
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
struct fmap *fmap_from_fmd(const struct flashmap_descriptor *desc)
|
|
{
|
|
assert(desc);
|
|
assert(desc->size_known);
|
|
|
|
if (strlen(desc->name) >= FMAP_STRLEN) {
|
|
ERROR("Image name ('%s') exceeds %d character FMAP header limit\n",
|
|
desc->name, FMAP_STRLEN - 1);
|
|
return NULL;
|
|
}
|
|
|
|
struct fmap *fmap = fmap_create(desc->offset_known ? desc->offset : 0,
|
|
desc->size, (uint8_t *)desc->name);
|
|
if (!fmap) {
|
|
ERROR("Failed to allocate FMAP header\n");
|
|
return fmap;
|
|
}
|
|
|
|
fmd_foreach_child(real_section, desc) {
|
|
if (!fmap_append_fmd_node(&fmap, real_section, 0)) {
|
|
fmap_destroy(fmap);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
return fmap;
|
|
}
|