Function cbfstool_convert_fsp

util/cbfstool/cbfstool.c:1145–1206

}

static int cbfstool_convert_fsp(struct buffer *buffer,
				uint32_t *offset, struct cbfs_file *header)
{
	uint32_t address;
	struct buffer fsp;

	/*
	 * There are 4 different cases here:
	 *
	 * 1. --xip and --base-address: we need to place the binary at the given base address
	 *    in the CBFS image and relocate it to that address. *offset was already filled in,
	 *    but we need to convert it to the host address space for relocation.
	 *
	 * 2. --xip but no --base-address: we implicitly force a 4K minimum alignment so that
	 *    relocation can occur. Call do_cbfs_locate() here to find an appropriate *offset.
	 *    This also needs to be converted to the host address space for relocation.
	 *
	 * 3. No --xip but a --base-address: special case where --base-address does not have its
	 *    normal meaning, instead we use it as the relocation target address. We explicitly
	 *    reset *offset to 0 so that the file will be placed wherever it fits in CBFS.
	 *
	 * 4. No --xip and no --base-address: this means that the FSP was pre-linked and should
	 *    not be relocated. Just chain directly to convert_raw() for compression.
	 */

	if (param.stage_xip) {
		if (!param.baseaddress_assigned) {
			param.alignment = 4*1024;
			if (do_cbfs_locate(offset, buffer_size(buffer)))
				return -1;
		}
		assert(!IS_HOST_SPACE_ADDRESS(*offset));
		address = convert_addr_space(param.image_region, *offset);
	} else {
		if (param.baseaddress_assigned == 0) {
			INFO("Honoring pre-linked FSP module, no relocation.\n");
			return cbfstool_convert_raw(buffer, offset, header);
		} else {
			address = param.baseaddress;
			*offset = 0;
		}
	}

	/* Create a copy of the buffer to attempt relocation. */
	if (buffer_create(&fsp, buffer_size(buffer), "fsp"))
		return -1;

	memcpy(buffer_get(&fsp), buffer_get(buffer), buffer_size(buffer));

	/* Replace the buffer contents w/ the relocated ones on success. */
	if (fsp_component_relocate(address, buffer_get(&fsp), buffer_size(&fsp))
	    > 0) {
		buffer_delete(buffer);
		buffer_clone(buffer, &fsp);
	} else {
		buffer_delete(&fsp);
		WARN("Invalid FSP variant.\n");
	}