1/* SPDX-License-Identifier: GPL-2.0+ */ 2/* 3 * Copyright (c) 2011 The Chromium OS Authors. 4 */ 5 6#ifndef __fdtdec_h 7#define __fdtdec_h 8 9/* 10 * This file contains convenience functions for decoding useful and 11 * enlightening information from FDTs. It is intended to be used by device 12 * drivers and board-specific code within U-Boot. It aims to reduce the 13 * amount of FDT munging required within U-Boot itself, so that driver code 14 * changes to support FDT are minimized. 15 */ 16 17#include <linux/libfdt.h> 18#include <pci.h> 19 20/* 21 * Support for 64bit fdt addresses. 22 * This can be used not only for 64bit SoCs, but also 23 * for large address extensions on 32bit SoCs. 24 * Note that fdt data is always big 25 * endian even on a litle endian machine. 26 */ 27 28#define FDT_SIZE_T_NONE (-1U) 29 30#ifdef CONFIG_FDT_64BIT 31typedef u64 fdt_addr_t; 32typedef u64 fdt_size_t; 33#define FDT_ADDR_T_NONE ((ulong)(-1)) 34 35#define fdt_addr_to_cpu(reg) be64_to_cpu(reg) 36#define fdt_size_to_cpu(reg) be64_to_cpu(reg) 37#define cpu_to_fdt_addr(reg) cpu_to_be64(reg) 38#define cpu_to_fdt_size(reg) cpu_to_be64(reg) 39typedef fdt64_t fdt_val_t; 40#else 41typedef u32 fdt_addr_t; 42typedef u32 fdt_size_t; 43#define FDT_ADDR_T_NONE (-1U) 44 45#define fdt_addr_to_cpu(reg) be32_to_cpu(reg) 46#define fdt_size_to_cpu(reg) be32_to_cpu(reg) 47#define cpu_to_fdt_addr(reg) cpu_to_be32(reg) 48#define cpu_to_fdt_size(reg) cpu_to_be32(reg) 49typedef fdt32_t fdt_val_t; 50#endif 51 52/* Information obtained about memory from the FDT */ 53struct fdt_memory { 54 fdt_addr_t start; 55 fdt_addr_t end; 56}; 57 58struct bd_info; 59 60/** 61 * enum fdt_source_t - indicates where the devicetree came from 62 * 63 * These are listed in approximate order of desirability after FDTSRC_NONE 64 * 65 * @FDTSRC_SEPARATE: Appended to U-Boot. This is the normal approach if U-Boot 66 * is the only firmware being booted 67 * @FDTSRC_FIT: Found in a multi-dtb FIT. This should be used when U-Boot must 68 * select a devicetree from many options 69 * @FDTSRC_BOARD: Located by custom board code. This should only be used when 70 * the prior stage does not support FDTSRC_PASSAGE 71 * @FDTSRC_EMBED: Embedded into U-Boot executable. This should onyl be used when 72 * U-Boot is packaged as an ELF file, e.g. for debugging purposes 73 * @FDTSRC_ENV: Provided by the fdtcontroladdr environment variable. This should 74 * be used for debugging/development only 75 * @FDTSRC_BLOBLIST: Provided by a bloblist from an earlier phase 76 */ 77enum fdt_source_t { 78 FDTSRC_SEPARATE, 79 FDTSRC_FIT, 80 FDTSRC_BOARD, 81 FDTSRC_EMBED, 82 FDTSRC_ENV, 83 FDTSRC_BLOBLIST, 84}; 85 86/* 87 * Information about a resource. start is the first address of the resource 88 * and end is the last address (inclusive). The length of the resource will 89 * be equal to: end - start + 1. 90 */ 91struct fdt_resource { 92 fdt_addr_t start; 93 fdt_addr_t end; 94}; 95 96enum fdt_pci_space { 97 FDT_PCI_SPACE_CONFIG = 0, 98 FDT_PCI_SPACE_IO = 0x01000000, 99 FDT_PCI_SPACE_MEM32 = 0x02000000, 100 FDT_PCI_SPACE_MEM64 = 0x03000000, 101 FDT_PCI_SPACE_MEM32_PREF = 0x42000000, 102 FDT_PCI_SPACE_MEM64_PREF = 0x43000000, 103}; 104 105#define FDT_PCI_ADDR_CELLS 3 106#define FDT_PCI_SIZE_CELLS 2 107#define FDT_PCI_REG_SIZE \ 108 ((FDT_PCI_ADDR_CELLS + FDT_PCI_SIZE_CELLS) * sizeof(u32)) 109 110/* 111 * The Open Firmware spec defines PCI physical address as follows: 112 * 113 * bits# 31 .... 24 23 .... 16 15 .... 08 07 .... 00 114 * 115 * phys.hi cell: npt000ss bbbbbbbb dddddfff rrrrrrrr 116 * phys.mid cell: hhhhhhhh hhhhhhhh hhhhhhhh hhhhhhhh 117 * phys.lo cell: llllllll llllllll llllllll llllllll 118 * 119 * where: 120 * 121 * n: is 0 if the address is relocatable, 1 otherwise 122 * p: is 1 if addressable region is prefetchable, 0 otherwise 123 * t: is 1 if the address is aliased (for non-relocatable I/O) below 1MB 124 * (for Memory), or below 64KB (for relocatable I/O) 125 * ss: is the space code, denoting the address space 126 * bbbbbbbb: is the 8-bit Bus Number 127 * ddddd: is the 5-bit Device Number 128 * fff: is the 3-bit Function Number 129 * rrrrrrrr: is the 8-bit Register Number 130 * hhhhhhhh: is a 32-bit unsigned number 131 * llllllll: is a 32-bit unsigned number 132 */ 133struct fdt_pci_addr { 134 u32 phys_hi; 135 u32 phys_mid; 136 u32 phys_lo; 137}; 138 139extern u8 __dtb_dt_begin[]; /* embedded device tree blob */ 140extern u8 __dtb_dt_spl_begin[]; /* embedded device tree blob for SPL/TPL */ 141 142/* Get a pointer to the embedded devicetree, if there is one, else NULL */ 143static inline u8 *dtb_dt_embedded(void) 144{ 145#ifdef CONFIG_OF_EMBED 146# ifdef CONFIG_SPL_BUILD 147 return __dtb_dt_spl_begin; 148# else 149 return __dtb_dt_begin; 150# endif 151#else 152 return NULL; 153#endif 154} 155 156/** 157 * Compute the size of a resource. 158 * 159 * @param res the resource to operate on 160 * Return: the size of the resource 161 */ 162static inline fdt_size_t fdt_resource_size(const struct fdt_resource *res) 163{ 164 return res->end - res->start + 1; 165} 166 167/** 168 * Compat types that we know about and for which we might have drivers. 169 * Each is named COMPAT_<dir>_<filename> where <dir> is the directory 170 * within drivers. 171 */ 172enum fdt_compat_id { 173 COMPAT_UNKNOWN, 174 COMPAT_NVIDIA_TEGRA20_EMC, /* Tegra20 memory controller */ 175 COMPAT_NVIDIA_TEGRA20_EMC_TABLE, /* Tegra20 memory timing table */ 176 COMPAT_NVIDIA_TEGRA20_NAND, /* Tegra2 NAND controller */ 177 COMPAT_NVIDIA_TEGRA124_XUSB_PADCTL, 178 /* Tegra124 XUSB pad controller */ 179 COMPAT_NVIDIA_TEGRA210_XUSB_PADCTL, 180 /* Tegra210 XUSB pad controller */ 181 COMPAT_SAMSUNG_EXYNOS_USB_PHY, /* Exynos phy controller for usb2.0 */ 182 COMPAT_SAMSUNG_EXYNOS5_USB3_PHY,/* Exynos phy controller for usb3.0 */ 183 COMPAT_SAMSUNG_EXYNOS_TMU, /* Exynos TMU */ 184 COMPAT_SAMSUNG_EXYNOS_MIPI_DSI, /* Exynos mipi dsi */ 185 COMPAT_SAMSUNG_EXYNOS_DWMMC, /* Exynos DWMMC controller */ 186 COMPAT_GENERIC_SPI_FLASH, /* Generic SPI Flash chip */ 187 COMPAT_SAMSUNG_EXYNOS_SYSMMU, /* Exynos sysmmu */ 188 COMPAT_INTEL_MICROCODE, /* Intel microcode update */ 189 COMPAT_INTEL_QRK_MRC, /* Intel Quark MRC */ 190 COMPAT_ALTERA_SOCFPGA_DWMAC, /* SoCFPGA Ethernet controller */ 191 COMPAT_ALTERA_SOCFPGA_DWMMC, /* SoCFPGA DWMMC controller */ 192 COMPAT_ALTERA_SOCFPGA_DWC2USB, /* SoCFPGA DWC2 USB controller */ 193 COMPAT_INTEL_BAYTRAIL_FSP, /* Intel Bay Trail FSP */ 194 COMPAT_INTEL_BAYTRAIL_FSP_MDP, /* Intel FSP memory-down params */ 195 COMPAT_INTEL_IVYBRIDGE_FSP, /* Intel Ivy Bridge FSP */ 196 COMPAT_ALTERA_SOCFPGA_CLK, /* SoCFPGA Clock initialization */ 197 COMPAT_ALTERA_SOCFPGA_PINCTRL_SINGLE, /* SoCFPGA pinctrl-single */ 198 COMPAT_ALTERA_SOCFPGA_H2F_BRG, /* SoCFPGA hps2fpga bridge */ 199 COMPAT_ALTERA_SOCFPGA_LWH2F_BRG, /* SoCFPGA lwhps2fpga bridge */ 200 COMPAT_ALTERA_SOCFPGA_F2H_BRG, /* SoCFPGA fpga2hps bridge */ 201 COMPAT_ALTERA_SOCFPGA_F2SDR0, /* SoCFPGA fpga2SDRAM0 bridge */ 202 COMPAT_ALTERA_SOCFPGA_F2SDR1, /* SoCFPGA fpga2SDRAM1 bridge */ 203 COMPAT_ALTERA_SOCFPGA_F2SDR2, /* SoCFPGA fpga2SDRAM2 bridge */ 204 COMPAT_ALTERA_SOCFPGA_FPGA0, /* SOCFPGA FPGA manager */ 205 COMPAT_ALTERA_SOCFPGA_NOC, /* SOCFPGA Arria 10 NOC */ 206 COMPAT_ALTERA_SOCFPGA_CLK_INIT, /* SOCFPGA Arria 10 clk init */ 207 208 COMPAT_COUNT, 209}; 210 211#define MAX_PHANDLE_ARGS 16 212struct fdtdec_phandle_args { 213 int node; 214 int args_count; 215 uint32_t args[MAX_PHANDLE_ARGS]; 216}; 217 218/** 219 * fdtdec_parse_phandle_with_args() - Find a node pointed by phandle in a list 220 * 221 * This function is useful to parse lists of phandles and their arguments. 222 * 223 * Example: 224 * 225 * phandle1: node1 { 226 * #list-cells = <2>; 227 * } 228 * 229 * phandle2: node2 { 230 * #list-cells = <1>; 231 * } 232 * 233 * node3 { 234 * list = <&phandle1 1 2 &phandle2 3>; 235 * } 236 * 237 * To get a device_node of the `node2' node you may call this: 238 * fdtdec_parse_phandle_with_args(blob, node3, "list", "#list-cells", 0, 1, 239 * &args); 240 * 241 * (This function is a modified version of __of_parse_phandle_with_args() from 242 * Linux 3.18) 243 * 244 * @blob: Pointer to device tree 245 * @src_node: Offset of device tree node containing a list 246 * @list_name: property name that contains a list 247 * @cells_name: property name that specifies the phandles' arguments count, 248 * or NULL to use @cells_count 249 * @cells_count: Cell count to use if @cells_name is NULL 250 * @index: index of a phandle to parse out 251 * @out_args: optional pointer to output arguments structure (will be filled) 252 * Return: 0 on success (with @out_args filled out if not NULL), -ENOENT if 253 * @list_name does not exist, a phandle was not found, @cells_name 254 * could not be found, the arguments were truncated or there were too 255 * many arguments. 256 * 257 */ 258int fdtdec_parse_phandle_with_args(const void *blob, int src_node, 259 const char *list_name, 260 const char *cells_name, 261 int cell_count, int index, 262 struct fdtdec_phandle_args *out_args); 263 264/** 265 * Find the next numbered alias for a peripheral. This is used to enumerate 266 * all the peripherals of a certain type. 267 * 268 * Do the first call with *upto = 0. Assuming /aliases/<name>0 exists then 269 * this function will return a pointer to the node the alias points to, and 270 * then update *upto to 1. Next time you call this function, the next node 271 * will be returned. 272 * 273 * All nodes returned will match the compatible ID, as it is assumed that 274 * all peripherals use the same driver. 275 * 276 * @param blob FDT blob to use 277 * @param name Root name of alias to search for 278 * @param id Compatible ID to look for 279 * Return: offset of next compatible node, or -FDT_ERR_NOTFOUND if no more 280 */ 281int fdtdec_next_alias(const void *blob, const char *name, 282 enum fdt_compat_id id, int *upto); 283 284/** 285 * Find the compatible ID for a given node. 286 * 287 * Generally each node has at least one compatible string attached to it. 288 * This function looks through our list of known compatible strings and 289 * returns the corresponding ID which matches the compatible string. 290 * 291 * @param blob FDT blob to use 292 * @param node Node containing compatible string to find 293 * Return: compatible ID, or COMPAT_UNKNOWN if we cannot find a match 294 */ 295enum fdt_compat_id fdtdec_lookup(const void *blob, int node); 296 297/** 298 * Find the next compatible node for a peripheral. 299 * 300 * Do the first call with node = 0. This function will return a pointer to 301 * the next compatible node. Next time you call this function, pass the 302 * value returned, and the next node will be provided. 303 * 304 * @param blob FDT blob to use 305 * @param node Start node for search 306 * @param id Compatible ID to look for (enum fdt_compat_id) 307 * Return: offset of next compatible node, or -FDT_ERR_NOTFOUND if no more 308 */ 309int fdtdec_next_compatible(const void *blob, int node, 310 enum fdt_compat_id id); 311 312/** 313 * Find the next compatible subnode for a peripheral. 314 * 315 * Do the first call with node set to the parent and depth = 0. This 316 * function will return the offset of the next compatible node. Next time 317 * you call this function, pass the node value returned last time, with 318 * depth unchanged, and the next node will be provided. 319 * 320 * @param blob FDT blob to use 321 * @param node Start node for search 322 * @param id Compatible ID to look for (enum fdt_compat_id) 323 * @param depthp Current depth (set to 0 before first call) 324 * Return: offset of next compatible node, or -FDT_ERR_NOTFOUND if no more 325 */ 326int fdtdec_next_compatible_subnode(const void *blob, int node, 327 enum fdt_compat_id id, int *depthp); 328 329/* 330 * Look up an address property in a node and return the parsed address, and 331 * optionally the parsed size. 332 * 333 * This variant assumes a known and fixed number of cells are used to 334 * represent the address and size. 335 * 336 * You probably don't want to use this function directly except to parse 337 * non-standard properties, and never to parse the "reg" property. Instead, 338 * use one of the "auto" variants below, which automatically honor the 339 * #address-cells and #size-cells properties in the parent node. 340 * 341 * @param blob FDT blob 342 * @param node node to examine 343 * @param prop_name name of property to find 344 * @param index which address to retrieve from a list of addresses. Often 0. 345 * @param na the number of cells used to represent an address 346 * @param ns the number of cells used to represent a size 347 * @param sizep a pointer to store the size into. Use NULL if not required 348 * @param translate Indicates whether to translate the returned value 349 * using the parent node's ranges property. 350 * Return: address, if found, or FDT_ADDR_T_NONE if not 351 */ 352fdt_addr_t fdtdec_get_addr_size_fixed(const void *blob, int node, 353 const char *prop_name, int index, int na, int ns, 354 fdt_size_t *sizep, bool translate); 355 356/* 357 * Look up an address property in a node and return the parsed address, and 358 * optionally the parsed size. 359 * 360 * This variant automatically determines the number of cells used to represent 361 * the address and size by parsing the provided parent node's #address-cells 362 * and #size-cells properties. 363 * 364 * @param blob FDT blob 365 * @param parent parent node of @node 366 * @param node node to examine 367 * @param prop_name name of property to find 368 * @param index which address to retrieve from a list of addresses. Often 0. 369 * @param sizep a pointer to store the size into. Use NULL if not required 370 * @param translate Indicates whether to translate the returned value 371 * using the parent node's ranges property. 372 * Return: address, if found, or FDT_ADDR_T_NONE if not 373 */ 374fdt_addr_t fdtdec_get_addr_size_auto_parent(const void *blob, int parent, 375 int node, const char *prop_name, int index, fdt_size_t *sizep, 376 bool translate); 377 378/* 379 * Look up an address property in a node and return the parsed address, and 380 * optionally the parsed size. 381 * 382 * This variant automatically determines the number of cells used to represent 383 * the address and size by parsing the parent node's #address-cells 384 * and #size-cells properties. The parent node is automatically found. 385 * 386 * The automatic parent lookup implemented by this function is slow. 387 * Consequently, fdtdec_get_addr_size_auto_parent() should be used where 388 * possible. 389 * 390 * @param blob FDT blob 391 * @param parent parent node of @node 392 * @param node node to examine 393 * @param prop_name name of property to find 394 * @param index which address to retrieve from a list of addresses. Often 0. 395 * @param sizep a pointer to store the size into. Use NULL if not required 396 * @param translate Indicates whether to translate the returned value 397 * using the parent node's ranges property. 398 * Return: address, if found, or FDT_ADDR_T_NONE if not 399 */ 400fdt_addr_t fdtdec_get_addr_size_auto_noparent(const void *blob, int node, 401 const char *prop_name, int index, fdt_size_t *sizep, 402 bool translate); 403 404/* 405 * Look up an address property in a node and return the parsed address. 406 * 407 * This variant hard-codes the number of cells used to represent the address 408 * and size based on sizeof(fdt_addr_t) and sizeof(fdt_size_t). It also 409 * always returns the first address value in the property (index 0). 410 * 411 * Use of this function is not recommended due to the hard-coding of cell 412 * counts. There is no programmatic validation that these hard-coded values 413 * actually match the device tree content in any way at all. This assumption 414 * can be satisfied by manually ensuring CONFIG_PHYS_64BIT is appropriately 415 * set in the U-Boot build and exercising strict control over DT content to 416 * ensure use of matching #address-cells/#size-cells properties. However, this 417 * approach is error-prone; those familiar with DT will not expect the 418 * assumption to exist, and could easily invalidate it. If the assumption is 419 * invalidated, this function will not report the issue, and debugging will 420 * be required. Instead, use fdtdec_get_addr_size_auto_parent(). 421 * 422 * @param blob FDT blob 423 * @param node node to examine 424 * @param prop_name name of property to find 425 * Return: address, if found, or FDT_ADDR_T_NONE if not 426 */ 427fdt_addr_t fdtdec_get_addr(const void *blob, int node, 428 const char *prop_name); 429 430/* 431 * Look up an address property in a node and return the parsed address, and 432 * optionally the parsed size. 433 * 434 * This variant hard-codes the number of cells used to represent the address 435 * and size based on sizeof(fdt_addr_t) and sizeof(fdt_size_t). It also 436 * always returns the first address value in the property (index 0). 437 * 438 * Use of this function is not recommended due to the hard-coding of cell 439 * counts. There is no programmatic validation that these hard-coded values 440 * actually match the device tree content in any way at all. This assumption 441 * can be satisfied by manually ensuring CONFIG_PHYS_64BIT is appropriately 442 * set in the U-Boot build and exercising strict control over DT content to 443 * ensure use of matching #address-cells/#size-cells properties. However, this 444 * approach is error-prone; those familiar with DT will not expect the 445 * assumption to exist, and could easily invalidate it. If the assumption is 446 * invalidated, this function will not report the issue, and debugging will 447 * be required. Instead, use fdtdec_get_addr_size_auto_parent(). 448 * 449 * @param blob FDT blob 450 * @param node node to examine 451 * @param prop_name name of property to find 452 * @param sizep a pointer to store the size into. Use NULL if not required 453 * Return: address, if found, or FDT_ADDR_T_NONE if not 454 */ 455fdt_addr_t fdtdec_get_addr_size(const void *blob, int node, 456 const char *prop_name, fdt_size_t *sizep); 457 458/** 459 * Look at the compatible property of a device node that represents a PCI 460 * device and extract pci vendor id and device id from it. 461 * 462 * @param blob FDT blob 463 * @param node node to examine 464 * @param vendor vendor id of the pci device 465 * @param device device id of the pci device 466 * Return: 0 if ok, negative on error 467 */ 468int fdtdec_get_pci_vendev(const void *blob, int node, 469 u16 *vendor, u16 *device); 470 471/** 472 * Look at the pci address of a device node that represents a PCI device 473 * and return base address of the pci device's registers. 474 * 475 * @param dev device to examine 476 * @param addr pci address in the form of fdt_pci_addr 477 * @param bar returns base address of the pci device's registers 478 * Return: 0 if ok, negative on error 479 */ 480int fdtdec_get_pci_bar32(const struct udevice *dev, struct fdt_pci_addr *addr, 481 u32 *bar); 482 483/** 484 * Look at the bus range property of a device node and return the pci bus 485 * range for this node. 486 * The property must hold one fdt_pci_addr with a length. 487 * @param blob FDT blob 488 * @param node node to examine 489 * @param res the resource structure to return the bus range 490 * Return: 0 if ok, negative on error 491 */ 492 493int fdtdec_get_pci_bus_range(const void *blob, int node, 494 struct fdt_resource *res); 495 496/** 497 * Look up a 32-bit integer property in a node and return it. The property 498 * must have at least 4 bytes of data. The value of the first cell is 499 * returned. 500 * 501 * @param blob FDT blob 502 * @param node node to examine 503 * @param prop_name name of property to find 504 * @param default_val default value to return if the property is not found 505 * Return: integer value, if found, or default_val if not 506 */ 507s32 fdtdec_get_int(const void *blob, int node, const char *prop_name, 508 s32 default_val); 509 510/** 511 * Unsigned version of fdtdec_get_int. The property must have at least 512 * 4 bytes of data. The value of the first cell is returned. 513 * 514 * @param blob FDT blob 515 * @param node node to examine 516 * @param prop_name name of property to find 517 * @param default_val default value to return if the property is not found 518 * Return: unsigned integer value, if found, or default_val if not 519 */ 520unsigned int fdtdec_get_uint(const void *blob, int node, const char *prop_name, 521 unsigned int default_val); 522 523/** 524 * Get a variable-sized number from a property 525 * 526 * This reads a number from one or more cells. 527 * 528 * @param ptr Pointer to property 529 * @param cells Number of cells containing the number 530 * Return: the value in the cells 531 */ 532u64 fdtdec_get_number(const fdt32_t *ptr, unsigned int cells); 533 534/** 535 * Look up a 64-bit integer property in a node and return it. The property 536 * must have at least 8 bytes of data (2 cells). The first two cells are 537 * concatenated to form a 8 bytes value, where the first cell is top half and 538 * the second cell is bottom half. 539 * 540 * @param blob FDT blob 541 * @param node node to examine 542 * @param prop_name name of property to find 543 * @param default_val default value to return if the property is not found 544 * Return: integer value, if found, or default_val if not 545 */ 546uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name, 547 uint64_t default_val); 548 549/** 550 * Checks whether a node is enabled. 551 * This looks for a 'status' property. If this exists, then returns 1 if 552 * the status is 'ok' and 0 otherwise. If there is no status property, 553 * it returns 1 on the assumption that anything mentioned should be enabled 554 * by default. 555 * 556 * @param blob FDT blob 557 * @param node node to examine 558 * Return: integer value 0 (not enabled) or 1 (enabled) 559 */ 560int fdtdec_get_is_enabled(const void *blob, int node); 561 562/** 563 * Checks that we have a valid fdt available to control U-Boot. 564 565 * However, if not then for the moment nothing is done, since this function 566 * is called too early to panic(). 567 * 568 * @returns 0 569 */ 570int fdtdec_check_fdt(void); 571 572/** 573 * Find the nodes for a peripheral and return a list of them in the correct 574 * order. This is used to enumerate all the peripherals of a certain type. 575 * 576 * To use this, optionally set up a /aliases node with alias properties for 577 * a peripheral. For example, for usb you could have: 578 * 579 * aliases { 580 * usb0 = "/ehci@c5008000"; 581 * usb1 = "/ehci@c5000000"; 582 * }; 583 * 584 * Pass "usb" as the name to this function and will return a list of two 585 * nodes offsets: /ehci@c5008000 and ehci@c5000000. 586 * 587 * All nodes returned will match the compatible ID, as it is assumed that 588 * all peripherals use the same driver. 589 * 590 * If no alias node is found, then the node list will be returned in the 591 * order found in the fdt. If the aliases mention a node which doesn't 592 * exist, then this will be ignored. If nodes are found with no aliases, 593 * they will be added in any order. 594 * 595 * If there is a gap in the aliases, then this function return a 0 node at 596 * that position. The return value will also count these gaps. 597 * 598 * This function checks node properties and will not return nodes which are 599 * marked disabled (status = "disabled"). 600 * 601 * @param blob FDT blob to use 602 * @param name Root name of alias to search for 603 * @param id Compatible ID to look for 604 * @param node_list Place to put list of found nodes 605 * @param maxcount Maximum number of nodes to find 606 * Return: number of nodes found on success, FDT_ERR_... on error 607 */ 608int fdtdec_find_aliases_for_id(const void *blob, const char *name, 609 enum fdt_compat_id id, int *node_list, int maxcount); 610 611/* 612 * This function is similar to fdtdec_find_aliases_for_id() except that it 613 * adds to the node_list that is passed in. Any 0 elements are considered 614 * available for allocation - others are considered already used and are 615 * skipped. 616 * 617 * You can use this by calling fdtdec_find_aliases_for_id() with an 618 * uninitialised array, then setting the elements that are returned to -1, 619 * say, then calling this function, perhaps with a different compat id. 620 * Any elements you get back that are >0 are new nodes added by the call 621 * to this function. 622 * 623 * Note that if you have some nodes with aliases and some without, you are 624 * sailing close to the wind. The call to fdtdec_find_aliases_for_id() with 625 * one compat_id may fill in positions for which you have aliases defined 626 * for another compat_id. When you later call *this* function with the second 627 * compat_id, the alias positions may already be used. A debug warning may 628 * be generated in this case, but it is safest to define aliases for all 629 * nodes when you care about the ordering. 630 */ 631int fdtdec_add_aliases_for_id(const void *blob, const char *name, 632 enum fdt_compat_id id, int *node_list, int maxcount); 633 634/** 635 * Get the alias sequence number of a node 636 * 637 * This works out whether a node is pointed to by an alias, and if so, the 638 * sequence number of that alias. Aliases are of the form <base><num> where 639 * <num> is the sequence number. For example spi2 would be sequence number 640 * 2. 641 * 642 * @param blob Device tree blob (if NULL, then error is returned) 643 * @param base Base name for alias (before the underscore) 644 * @param node Node to look up 645 * @param seqp This is set to the sequence number if one is found, 646 * but otherwise the value is left alone 647 * Return: 0 if a sequence was found, -ve if not 648 */ 649int fdtdec_get_alias_seq(const void *blob, const char *base, int node, 650 int *seqp); 651 652/** 653 * Get the highest alias number for susbystem. 654 * 655 * It parses all aliases and find out highest recorded alias for subsystem. 656 * Aliases are of the form <base><num> where <num> is the sequence number. 657 * 658 * @param blob Device tree blob (if NULL, then error is returned) 659 * @param base Base name for alias susbystem (before the number) 660 * 661 * Return: 0 highest alias ID, -1 if not found 662 */ 663int fdtdec_get_alias_highest_id(const void *blob, const char *base); 664 665/** 666 * Get a property from the /chosen node 667 * 668 * @param blob Device tree blob (if NULL, then NULL is returned) 669 * @param name Property name to look up 670 * Return: Value of property, or NULL if it does not exist 671 */ 672const char *fdtdec_get_chosen_prop(const void *blob, const char *name); 673 674/** 675 * Get the offset of the given /chosen node 676 * 677 * This looks up a property in /chosen containing the path to another node, 678 * then finds the offset of that node. 679 * 680 * @param blob Device tree blob (if NULL, then error is returned) 681 * @param name Property name, e.g. "stdout-path" 682 * Return: Node offset referred to by that chosen node, or -ve FDT_ERR_... 683 */ 684int fdtdec_get_chosen_node(const void *blob, const char *name); 685 686/* 687 * Get the name for a compatible ID 688 * 689 * @param id Compatible ID to look for 690 * Return: compatible string for that id 691 */ 692const char *fdtdec_get_compatible(enum fdt_compat_id id); 693 694/* Look up a phandle and follow it to its node. Then return the offset 695 * of that node. 696 * 697 * @param blob FDT blob 698 * @param node node to examine 699 * @param prop_name name of property to find 700 * Return: node offset if found, -ve error code on error 701 */ 702int fdtdec_lookup_phandle(const void *blob, int node, const char *prop_name); 703 704/** 705 * Look up a property in a node and return its contents in an integer 706 * array of given length. The property must have at least enough data for 707 * the array (4*count bytes). It may have more, but this will be ignored. 708 * 709 * @param blob FDT blob 710 * @param node node to examine 711 * @param prop_name name of property to find 712 * @param array array to fill with data 713 * @param count number of array elements 714 * Return: 0 if ok, or -FDT_ERR_NOTFOUND if the property is not found, 715 * or -FDT_ERR_BADLAYOUT if not enough data 716 */ 717int fdtdec_get_int_array(const void *blob, int node, const char *prop_name, 718 u32 *array, int count); 719 720/** 721 * Look up a property in a node and return its contents in an integer 722 * array of given length. The property must exist but may have less data that 723 * expected (4*count bytes). It may have more, but this will be ignored. 724 * 725 * @param blob FDT blob 726 * @param node node to examine 727 * @param prop_name name of property to find 728 * @param array array to fill with data 729 * @param count number of array elements 730 * Return: number of array elements if ok, or -FDT_ERR_NOTFOUND if the 731 * property is not found 732 */ 733int fdtdec_get_int_array_count(const void *blob, int node, 734 const char *prop_name, u32 *array, int count); 735 736/** 737 * Look up a property in a node and return a pointer to its contents as a 738 * unsigned int array of given length. The property must have at least enough 739 * data for the array ('count' cells). It may have more, but this will be 740 * ignored. The data is not copied. 741 * 742 * Note that you must access elements of the array with fdt32_to_cpu(), 743 * since the elements will be big endian even on a little endian machine. 744 * 745 * @param blob FDT blob 746 * @param node node to examine 747 * @param prop_name name of property to find 748 * @param count number of array elements 749 * Return: pointer to array if found, or NULL if the property is not 750 * found or there is not enough data 751 */ 752const u32 *fdtdec_locate_array(const void *blob, int node, 753 const char *prop_name, int count); 754 755/** 756 * Look up a boolean property in a node and return it. 757 * 758 * A boolean properly is true if present in the device tree and false if not 759 * present, regardless of its value. 760 * 761 * @param blob FDT blob 762 * @param node node to examine 763 * @param prop_name name of property to find 764 * Return: 1 if the properly is present; 0 if it isn't present 765 */ 766int fdtdec_get_bool(const void *blob, int node, const char *prop_name); 767 768/* 769 * Count child nodes of one parent node. 770 * 771 * @param blob FDT blob 772 * @param node parent node 773 * Return: number of child node; 0 if there is not child node 774 */ 775int fdtdec_get_child_count(const void *blob, int node); 776 777/* 778 * Look up a property in a node and return its contents in a byte 779 * array of given length. The property must have at least enough data for 780 * the array (count bytes). It may have more, but this will be ignored. 781 * 782 * @param blob FDT blob 783 * @param node node to examine 784 * @param prop_name name of property to find 785 * @param array array to fill with data 786 * @param count number of array elements 787 * Return: 0 if ok, or -FDT_ERR_MISSING if the property is not found, 788 * or -FDT_ERR_BADLAYOUT if not enough data 789 */ 790int fdtdec_get_byte_array(const void *blob, int node, const char *prop_name, 791 u8 *array, int count); 792 793/** 794 * Look up a property in a node and return a pointer to its contents as a 795 * byte array of given length. The property must have at least enough data 796 * for the array (count bytes). It may have more, but this will be ignored. 797 * The data is not copied. 798 * 799 * @param blob FDT blob 800 * @param node node to examine 801 * @param prop_name name of property to find 802 * @param count number of array elements 803 * Return: pointer to byte array if found, or NULL if the property is not 804 * found or there is not enough data 805 */ 806const u8 *fdtdec_locate_byte_array(const void *blob, int node, 807 const char *prop_name, int count); 808 809/** 810 * Obtain an indexed resource from a device property. 811 * 812 * @param fdt FDT blob 813 * @param node node to examine 814 * @param property name of the property to parse 815 * @param index index of the resource to retrieve 816 * @param res returns the resource 817 * Return: 0 if ok, negative on error 818 */ 819int fdt_get_resource(const void *fdt, int node, const char *property, 820 unsigned int index, struct fdt_resource *res); 821 822/** 823 * Obtain a named resource from a device property. 824 * 825 * Look up the index of the name in a list of strings and return the resource 826 * at that index. 827 * 828 * @param fdt FDT blob 829 * @param node node to examine 830 * @param property name of the property to parse 831 * @param prop_names name of the property containing the list of names 832 * @param name the name of the entry to look up 833 * @param res returns the resource 834 */ 835int fdt_get_named_resource(const void *fdt, int node, const char *property, 836 const char *prop_names, const char *name, 837 struct fdt_resource *res); 838 839/* Display timings from linux include/video/display_timing.h */ 840enum display_flags { 841 DISPLAY_FLAGS_HSYNC_LOW = 1 << 0, 842 DISPLAY_FLAGS_HSYNC_HIGH = 1 << 1, 843 DISPLAY_FLAGS_VSYNC_LOW = 1 << 2, 844 DISPLAY_FLAGS_VSYNC_HIGH = 1 << 3, 845 846 /* data enable flag */ 847 DISPLAY_FLAGS_DE_LOW = 1 << 4, 848 DISPLAY_FLAGS_DE_HIGH = 1 << 5, 849 /* drive data on pos. edge */ 850 DISPLAY_FLAGS_PIXDATA_POSEDGE = 1 << 6, 851 /* drive data on neg. edge */ 852 DISPLAY_FLAGS_PIXDATA_NEGEDGE = 1 << 7, 853 DISPLAY_FLAGS_INTERLACED = 1 << 8, 854 DISPLAY_FLAGS_DOUBLESCAN = 1 << 9, 855 DISPLAY_FLAGS_DOUBLECLK = 1 << 10, 856}; 857 858/* 859 * A single signal can be specified via a range of minimal and maximal values 860 * with a typical value, that lies somewhere inbetween. 861 */ 862struct timing_entry { 863 u32 min; 864 u32 typ; 865 u32 max; 866}; 867 868/* 869 * Single "mode" entry. This describes one set of signal timings a display can 870 * have in one setting. This struct can later be converted to struct videomode 871 * (see include/video/videomode.h). As each timing_entry can be defined as a 872 * range, one struct display_timing may become multiple struct videomodes. 873 * 874 * Example: hsync active high, vsync active low 875 * 876 * Active Video 877 * Video ______________________XXXXXXXXXXXXXXXXXXXXXX_____________________ 878 * |<- sync ->|<- back ->|<----- active ----->|<- front ->|<- sync.. 879 * | | porch | | porch | 880 * 881 * HSync _|��������������������|___________________________________________|������������������ 882 * 883 * VSync ��|__________|��������������������������������������������������������������������������������������|_________ 884 */ 885struct display_timing { 886 struct timing_entry pixelclock; 887 888 struct timing_entry hactive; /* hor. active video */ 889 struct timing_entry hfront_porch; /* hor. front porch */ 890 struct timing_entry hback_porch; /* hor. back porch */ 891 struct timing_entry hsync_len; /* hor. sync len */ 892 893 struct timing_entry vactive; /* ver. active video */ 894 struct timing_entry vfront_porch; /* ver. front porch */ 895 struct timing_entry vback_porch; /* ver. back porch */ 896 struct timing_entry vsync_len; /* ver. sync len */ 897 898 enum display_flags flags; /* display flags */ 899 bool hdmi_monitor; /* is hdmi monitor? */ 900}; 901 902/** 903 * fdtdec_decode_display_timing() - decode display timings 904 * 905 * Decode display timings from the supplied 'display-timings' node. 906 * See doc/device-tree-bindings/video/display-timing.txt for binding 907 * information. 908 * 909 * @param blob FDT blob 910 * @param node 'display-timing' node containing the timing subnodes 911 * @param index Index number to read (0=first timing subnode) 912 * @param config Place to put timings 913 * Return: 0 if OK, -FDT_ERR_NOTFOUND if not found 914 */ 915int fdtdec_decode_display_timing(const void *blob, int node, int index, 916 struct display_timing *config); 917 918/** 919 * fdtdec_setup_mem_size_base() - decode and setup gd->ram_size and 920 * gd->ram_start 921 * 922 * Decode the /memory 'reg' property to determine the size and start of the 923 * first memory bank, populate the global data with the size and start of the 924 * first bank of memory. 925 * 926 * This function should be called from a boards dram_init(). This helper 927 * function allows for boards to query the device tree for DRAM size and start 928 * address instead of hard coding the value in the case where the memory size 929 * and start address cannot be detected automatically. 930 * 931 * Return: 0 if OK, -EINVAL if the /memory node or reg property is missing or 932 * invalid 933 */ 934int fdtdec_setup_mem_size_base(void); 935 936/** 937 * fdtdec_setup_mem_size_base_lowest() - decode and setup gd->ram_size and 938 * gd->ram_start by lowest available memory base 939 * 940 * Decode the /memory 'reg' property to determine the lowest start of the memory 941 * bank bank and populate the global data with it. 942 * 943 * This function should be called from a boards dram_init(). This helper 944 * function allows for boards to query the device tree for DRAM size and start 945 * address instead of hard coding the value in the case where the memory size 946 * and start address cannot be detected automatically. 947 * 948 * Return: 0 if OK, -EINVAL if the /memory node or reg property is missing or 949 * invalid 950 */ 951int fdtdec_setup_mem_size_base_lowest(void); 952 953/** 954 * fdtdec_setup_memory_banksize() - decode and populate gd->bd->bi_dram 955 * 956 * Decode the /memory 'reg' property to determine the address and size of the 957 * memory banks. Use this data to populate the global data board info with the 958 * phys address and size of memory banks. 959 * 960 * This function should be called from a boards dram_init_banksize(). This 961 * helper function allows for boards to query the device tree for memory bank 962 * information instead of hard coding the information in cases where it cannot 963 * be detected automatically. 964 * 965 * Return: 0 if OK, -EINVAL if the /memory node or reg property is missing or 966 * invalid 967 */ 968int fdtdec_setup_memory_banksize(void); 969 970/** 971 * fdtdec_set_ethernet_mac_address() - set MAC address for default interface 972 * 973 * Looks up the default interface via the "ethernet" alias (in the /aliases 974 * node) and stores the given MAC in its "local-mac-address" property. This 975 * is useful on platforms that store the MAC address in a custom location. 976 * Board code can call this in the late init stage to make sure that the 977 * interface device tree node has the right MAC address configured for the 978 * Ethernet uclass to pick it up. 979 * 980 * Typically the FDT passed into this function will be U-Boot's control DTB. 981 * Given that a lot of code may be holding offsets to various nodes in that 982 * tree, this code will only set the "local-mac-address" property in-place, 983 * which means that it needs to exist and have space for the 6-byte address. 984 * This ensures that the operation is non-destructive and does not invalidate 985 * offsets that other drivers may be using. 986 * 987 * @param fdt FDT blob 988 * @param mac buffer containing the MAC address to set 989 * @param size size of MAC address 990 * Return: 0 on success or a negative error code on failure 991 */ 992int fdtdec_set_ethernet_mac_address(void *fdt, const u8 *mac, size_t size); 993 994/** 995 * fdtdec_set_phandle() - sets the phandle of a given node 996 * 997 * @param blob FDT blob 998 * @param node offset in the FDT blob of the node whose phandle is to 999 * be set 1000 * @param phandle phandle to set for the given node 1001 * Return: 0 on success or a negative error code on failure 1002 */ 1003static inline int fdtdec_set_phandle(void *blob, int node, uint32_t phandle) 1004{ 1005 return fdt_setprop_u32(blob, node, "phandle", phandle); 1006} 1007 1008/* add "no-map" property */ 1009#define FDTDEC_RESERVED_MEMORY_NO_MAP (1 << 0) 1010 1011/** 1012 * fdtdec_add_reserved_memory() - add or find a reserved-memory node 1013 * 1014 * If a reserved-memory node already exists for the given carveout, a phandle 1015 * for that node will be returned. Otherwise a new node will be created and a 1016 * phandle corresponding to it will be returned. 1017 * 1018 * See Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt 1019 * for details on how to use reserved memory regions. 1020 * 1021 * As an example, consider the following code snippet: 1022 * 1023 * struct fdt_memory fb = { 1024 * .start = 0x92cb3000, 1025 * .end = 0x934b2fff, 1026 * }; 1027 * uint32_t phandle; 1028 * 1029 * fdtdec_add_reserved_memory(fdt, "framebuffer", &fb, NULL, 0, &phandle, 1030 * 0); 1031 * 1032 * This results in the following subnode being added to the top-level 1033 * /reserved-memory node: 1034 * 1035 * reserved-memory { 1036 * #address-cells = <0x00000002>; 1037 * #size-cells = <0x00000002>; 1038 * ranges; 1039 * 1040 * framebuffer@92cb3000 { 1041 * reg = <0x00000000 0x92cb3000 0x00000000 0x00800000>; 1042 * phandle = <0x0000004d>; 1043 * }; 1044 * }; 1045 * 1046 * If the top-level /reserved-memory node does not exist, it will be created. 1047 * The phandle returned from the function call can be used to reference this 1048 * reserved memory region from other nodes. 1049 * 1050 * See fdtdec_set_carveout() for a more elaborate example. 1051 * 1052 * @param blob FDT blob 1053 * @param basename base name of the node to create 1054 * @param carveout information about the carveout region 1055 * @param compatibles list of compatible strings for the carveout region 1056 * @param count number of compatible strings for the carveout region 1057 * @param phandlep return location for the phandle of the carveout region 1058 * can be NULL if no phandle should be added 1059 * @param flags bitmask of flags to set for the carveout region 1060 * Return: 0 on success or a negative error code on failure 1061 */ 1062int fdtdec_add_reserved_memory(void *blob, const char *basename, 1063 const struct fdt_memory *carveout, 1064 const char **compatibles, unsigned int count, 1065 uint32_t *phandlep, unsigned long flags); 1066 1067/** 1068 * fdtdec_get_carveout() - reads a carveout from an FDT 1069 * 1070 * Reads information about a carveout region from an FDT. The carveout is a 1071 * referenced by its phandle that is read from a given property in a given 1072 * node. 1073 * 1074 * @param blob FDT blob 1075 * @param node name of a node 1076 * @param prop_name name of the property in the given node that contains 1077 * the phandle for the carveout 1078 * @param index index of the phandle for which to read the carveout 1079 * @param carveout return location for the carveout information 1080 * @param name return location for the carveout name 1081 * @param compatiblesp return location for compatible strings 1082 * @param countp return location for the number of compatible strings 1083 * @param flags return location for the flags of the carveout 1084 * Return: 0 on success or a negative error code on failure 1085 */ 1086int fdtdec_get_carveout(const void *blob, const char *node, 1087 const char *prop_name, unsigned int index, 1088 struct fdt_memory *carveout, const char **name, 1089 const char ***compatiblesp, unsigned int *countp, 1090 unsigned long *flags); 1091 1092/** 1093 * fdtdec_set_carveout() - sets a carveout region for a given node 1094 * 1095 * Sets a carveout region for a given node. If a reserved-memory node already 1096 * exists for the carveout, the phandle for that node will be reused. If no 1097 * such node exists, a new one will be created and a phandle to it stored in 1098 * a specified property of the given node. 1099 * 1100 * As an example, consider the following code snippet: 1101 * 1102 * const char *node = "/host1x@50000000/dc@54240000"; 1103 * struct fdt_memory fb = { 1104 * .start = 0x92cb3000, 1105 * .end = 0x934b2fff, 1106 * }; 1107 * 1108 * fdtdec_set_carveout(fdt, node, "memory-region", 0, "framebuffer", NULL, 1109 * 0, &fb, 0); 1110 * 1111 * dc@54200000 is a display controller and was set up by the bootloader to 1112 * scan out the framebuffer specified by "fb". This would cause the following 1113 * reserved memory region to be added: 1114 * 1115 * reserved-memory { 1116 * #address-cells = <0x00000002>; 1117 * #size-cells = <0x00000002>; 1118 * ranges; 1119 * 1120 * framebuffer@92cb3000 { 1121 * reg = <0x00000000 0x92cb3000 0x00000000 0x00800000>; 1122 * phandle = <0x0000004d>; 1123 * }; 1124 * }; 1125 * 1126 * A "memory-region" property will also be added to the node referenced by the 1127 * offset parameter. 1128 * 1129 * host1x@50000000 { 1130 * ... 1131 * 1132 * dc@54240000 { 1133 * ... 1134 * memory-region = <0x0000004d>; 1135 * ... 1136 * }; 1137 * 1138 * ... 1139 * }; 1140 * 1141 * @param blob FDT blob 1142 * @param node name of the node to add the carveout to 1143 * @param prop_name name of the property in which to store the phandle of 1144 * the carveout 1145 * @param index index of the phandle to store 1146 * @param carveout information about the carveout to add 1147 * @param name base name of the reserved-memory node to create 1148 * @param compatibles compatible strings to set for the carveout 1149 * @param count number of compatible strings 1150 * @param flags bitmask of flags to set for the carveout 1151 * Return: 0 on success or a negative error code on failure 1152 */ 1153int fdtdec_set_carveout(void *blob, const char *node, const char *prop_name, 1154 unsigned int index, const struct fdt_memory *carveout, 1155 const char *name, const char **compatibles, 1156 unsigned int count, unsigned long flags); 1157 1158/** 1159 * Set up the device tree ready for use 1160 */ 1161int fdtdec_setup(void); 1162 1163/** 1164 * Perform board-specific early DT adjustments 1165 */ 1166int fdtdec_board_setup(const void *fdt_blob); 1167 1168/** 1169 * fdtdec_resetup() - Set up the device tree again 1170 * 1171 * The main difference with fdtdec_setup() is that it returns if the fdt has 1172 * changed because a better match has been found. 1173 * This is typically used for boards that rely on a DM driver to detect the 1174 * board type. This function sould be called by the board code after the stuff 1175 * needed by board_fit_config_name_match() to operate porperly is available. 1176 * If this functions signals that a rescan is necessary, the board code must 1177 * unbind all the drivers using dm_uninit() and then rescan the DT with 1178 * dm_init_and_scan(). 1179 * 1180 * @param rescan Returns a flag indicating that fdt has changed and rescanning 1181 * the fdt is required 1182 * 1183 * Return: 0 if OK, -ve on error 1184 */ 1185int fdtdec_resetup(int *rescan); 1186 1187/** 1188 * Board-specific FDT initialization. Returns the address to a device tree blob. 1189 * 1190 * Called when CONFIG_OF_BOARD is defined. 1191 * 1192 * The existing devicetree is available at gd->fdt_blob 1193 * 1194 * @err: 0 on success, -EEXIST if the devicetree is already correct, or other 1195 * internal error code if we fail to setup a DTB 1196 * @returns new devicetree blob pointer 1197 */ 1198void *board_fdt_blob_setup(int *err); 1199 1200/* 1201 * Decode the size of memory 1202 * 1203 * RAM size is normally set in a /memory node and consists of a list of 1204 * (base, size) cells in the 'reg' property. This information is used to 1205 * determine the total available memory as well as the address and size 1206 * of each bank. 1207 * 1208 * Optionally the memory configuration can vary depending on a board id, 1209 * typically read from strapping resistors or an EEPROM on the board. 1210 * 1211 * Finally, memory size can be detected (within certain limits) by probing 1212 * the available memory. It is safe to do so within the limits provides by 1213 * the board's device tree information. This makes it possible to produce 1214 * boards with different memory sizes, where the device tree specifies the 1215 * maximum memory configuration, and the smaller memory configuration is 1216 * probed. 1217 * 1218 * This function decodes that information, returning the memory base address, 1219 * size and bank information. See the memory.txt binding for full 1220 * documentation. 1221 * 1222 * @param blob Device tree blob 1223 * @param area Name of node to check (NULL means "/memory") 1224 * @param board_id Board ID to look up 1225 * @param basep Returns base address of first memory bank (NULL to 1226 * ignore) 1227 * @param sizep Returns total memory size (NULL to ignore) 1228 * @param bd Updated with the memory bank information (NULL to skip) 1229 * Return: 0 if OK, -ve on error 1230 */ 1231int fdtdec_decode_ram_size(const void *blob, const char *area, int board_id, 1232 phys_addr_t *basep, phys_size_t *sizep, 1233 struct bd_info *bd); 1234 1235/** 1236 * fdtdec_get_srcname() - Get the name of where the devicetree comes from 1237 * 1238 * Return: source name 1239 */ 1240const char *fdtdec_get_srcname(void); 1241 1242#endif 1243