1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
65 		uint16_t index : 14;  member
69 	uint16_t bits;  member
126 		return (-1);  in qemu_fwcfg_selector_port_handler()
130 		*eax = htole16(fwcfg_sc.selector.bits);  in qemu_fwcfg_selector_port_handler()
135 	fwcfg_sc.selector.bits = le16toh(*eax);  in qemu_fwcfg_selector_port_handler()
148 		return (-1);  in qemu_fwcfg_data_port_handler()
154 		return (-1);  in qemu_fwcfg_data_port_handler()
160 			   [fwcfg_sc.selector.index];  in qemu_fwcfg_data_port_handler()
161 	if (item->data == NULL) {  in qemu_fwcfg_data_port_handler()
163 		    "%s: qemu fwcfg item doesn't exist (architecture %s index 0x%x)",  in qemu_fwcfg_data_port_handler()
166 		    fwcfg_sc.selector.index);  in qemu_fwcfg_data_port_handler()
169 	} else if (fwcfg_sc.data_offset >= item->size) {  in qemu_fwcfg_data_port_handler()
171 		    "%s: qemu fwcfg item read exceeds size (architecture %s index 0x%x size 0x%x offset 0x%x)",  in qemu_fwcfg_data_port_handler()
174 		    fwcfg_sc.selector.index, item->size, fwcfg_sc.data_offset);  in qemu_fwcfg_data_port_handler()
180 	*eax = item->data[fwcfg_sc.data_offset];  in qemu_fwcfg_data_port_handler()
188 qemu_fwcfg_add_item(const uint16_t architecture, const uint16_t index,  in qemu_fwcfg_add_item()  argument
191 	/* truncate architecture and index to their desired size */  in qemu_fwcfg_add_item()
193 	const uint16_t idx = index & QEMU_FWCFG_INDEX_MASK;  in qemu_fwcfg_add_item()
199 	if (fwcfg_item->data != NULL) {  in qemu_fwcfg_add_item()
200 		warnx("%s: qemu fwcfg item exists (architecture %s index 0x%x)",  in qemu_fwcfg_add_item()
206 	fwcfg_item->size = size;  in qemu_fwcfg_add_item()
207 	fwcfg_item->data = data;  in qemu_fwcfg_add_item()
238 	fwcfg_id->interface = 1;  in qemu_fwcfg_add_item_id()
239 	fwcfg_id->DMA = 0;  in qemu_fwcfg_add_item_id()
290 	fwcfg_signature->signature[0] = 'Q';  in qemu_fwcfg_add_item_signature()
291 	fwcfg_signature->signature[1] = 'E';  in qemu_fwcfg_add_item_signature()
292 	fwcfg_signature->signature[2] = 'M';  in qemu_fwcfg_add_item_signature()
293 	fwcfg_signature->signature[3] = 'U';  in qemu_fwcfg_add_item_signature()
328 	const uint32_t count = be32toh(fwcfg_sc.directory->be_count) + 1;  in qemu_fwcfg_add_file()
331 	const uint32_t index = QEMU_FWCFG_FIRST_FILE_INDEX + count - 1;  in qemu_fwcfg_add_file()  local
333 	    index, size, data);  in qemu_fwcfg_add_file()
339 	 * files should be sorted alphabetical, get index for new file  in qemu_fwcfg_add_file()
342 	for (file_index = 0; file_index < count - 1; ++file_index) {  in qemu_fwcfg_add_file()
343 		if (strcmp(name, fwcfg_sc.directory->files[file_index].name) <  in qemu_fwcfg_add_file()
362 		memcpy(new_directory->files, fwcfg_sc.directory->files,  in qemu_fwcfg_add_file()
366 		memcpy(&new_directory->files[file_index + 1],  in qemu_fwcfg_add_file()
367 		    &fwcfg_sc.directory->files[file_index],  in qemu_fwcfg_add_file()
368 		    (count - file_index - 1) * sizeof(struct qemu_fwcfg_file));  in qemu_fwcfg_add_file()
381 		for (uint32_t i = QEMU_FWCFG_MIN_FILES - 1; i > file_index;  in qemu_fwcfg_add_file()
382 		     --i) {  in qemu_fwcfg_add_file()
383 			memcpy(&fwcfg_sc.directory->files[i],  in qemu_fwcfg_add_file()
384 			    &fwcfg_sc.directory->files[i - 1],  in qemu_fwcfg_add_file()
390 	 * QEMU specifies count, size and index as big endian.  in qemu_fwcfg_add_file()
391 	 * Save these values in big endian to simplify guest reads of these  in qemu_fwcfg_add_file()
394 	fwcfg_sc.directory->be_count = htobe32(count);  in qemu_fwcfg_add_file()
395 	fwcfg_sc.directory->files[file_index].be_size = htobe32(size);  in qemu_fwcfg_add_file()
396 	fwcfg_sc.directory->files[file_index].be_selector = htobe16(index);  in qemu_fwcfg_add_file()
397 	strcpy(fwcfg_sc.directory->files[file_index].name, name);  in qemu_fwcfg_add_file()
414 		error = qemu_fwcfg_add_file(fwcfg_file->name, fwcfg_file->size,  in qemu_fwcfg_add_user_files()
415 		    fwcfg_file->data);  in qemu_fwcfg_add_user_files()
436 	 * interface and thus is amd64-specific for now.  An MMIO interface is  in qemu_fwcfg_init()
448 	 * interfaces at the same time to the guest. Therefore, only create acpi  in qemu_fwcfg_init()
530 	warnx("-f [name=]<name>,(string|file)=<value>");  in qemu_fwcfg_usage()
536  * "-f [name=]<name>,(string|file)=<value>"
538  * E.g.: "-f opt/com.page/example,string=Hello"
558 	if (strncmp(opt_ptr, "name=", sizeof("name=") - 1) == 0) {  in qemu_fwcfg_parse_cmdline_arg()
559 		opt_ptr += sizeof("name=") - 1;  in qemu_fwcfg_parse_cmdline_arg()
570 	if (opt_end - opt_ptr >= QEMU_FWCFG_MAX_NAME) {  in qemu_fwcfg_parse_cmdline_arg()
576 	strncpy(fwcfg_file->name, opt_ptr, opt_end - opt_ptr);  in qemu_fwcfg_parse_cmdline_arg()
577 	fwcfg_file->name[opt_end - opt_ptr] = '\0';  in qemu_fwcfg_parse_cmdline_arg()
583 	if (strncmp(opt_ptr, "string=", sizeof("string=") - 1) == 0) {  in qemu_fwcfg_parse_cmdline_arg()
584 		opt_ptr += sizeof("string=") - 1;  in qemu_fwcfg_parse_cmdline_arg()
585 		fwcfg_file->data = strdup(opt_ptr);  in qemu_fwcfg_parse_cmdline_arg()
586 		if (fwcfg_file->data == NULL) {  in qemu_fwcfg_parse_cmdline_arg()
591 		fwcfg_file->size = strlen(opt_ptr) + 1;  in qemu_fwcfg_parse_cmdline_arg()
592 	} else if (strncmp(opt_ptr, "file=", sizeof("file=") - 1) == 0) {  in qemu_fwcfg_parse_cmdline_arg()
593 		opt_ptr += sizeof("file=") - 1;  in qemu_fwcfg_parse_cmdline_arg()
605 			return (-1);  in qemu_fwcfg_parse_cmdline_arg()
608 		fwcfg_file->data = malloc(sb.st_size);  in qemu_fwcfg_parse_cmdline_arg()
609 		if (fwcfg_file->data == NULL) {  in qemu_fwcfg_parse_cmdline_arg()
616 		bytes_read = read(fd, fwcfg_file->data, sb.st_size);  in qemu_fwcfg_parse_cmdline_arg()
619 			free(fwcfg_file->data);  in qemu_fwcfg_parse_cmdline_arg()
621 			return (-1);  in qemu_fwcfg_parse_cmdline_arg()
623 		fwcfg_file->size = bytes_read;  in qemu_fwcfg_parse_cmdline_arg()