/* * 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; }