/*
   * (C) Copyright 2007
   * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
   *

   * SPDX-License-Identifier:	GPL-2.0+

   */
  
  #ifndef __FDT_SUPPORT_H
  #define __FDT_SUPPORT_H
  
  #ifdef CONFIG_OF_LIBFDT

  #include <libfdt.h>

  u32 fdt_getprop_u32_default_node(const void *fdt, int off, int cell,
  				const char *prop, const u32 dflt);

  u32 fdt_getprop_u32_default(const void *fdt, const char *path,
  				const char *prop, const u32 dflt);

  
  /**
   * Add data to the root of the FDT before booting the OS.
   *
   * See doc/device-tree-bindings/root.txt
   *
   * @param fdt		FDT address in memory
   * @return 0 if ok, or -FDT_ERR_... on error
   */

  int fdt_root(void *fdt);

  
  /**
   * Add chosen data the FDT before booting the OS.
   *
   * In particular, this adds the kernel command line (bootargs) to the FDT.
   *
   * @param fdt		FDT address in memory
   * @return 0 if ok, or -FDT_ERR_... on error
   */

  int fdt_chosen(void *fdt);

  
  /**
   * Add initrd information to the FDT before booting the OS.
   *
   * @param fdt		FDT address in memory
   * @return 0 if ok, or -FDT_ERR_... on error
   */

  int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end);

  void do_fixup_by_path(void *fdt, const char *path, const char *prop,
  		      const void *val, int len, int create);
  void do_fixup_by_path_u32(void *fdt, const char *path, const char *prop,
  			  u32 val, int create);

  
  static inline void do_fixup_by_path_string(void *fdt, const char *path,
  					   const char *prop, const char *status)
  {
  	do_fixup_by_path(fdt, path, prop, status, strlen(status) + 1, 1);
  }

  void do_fixup_by_prop(void *fdt,
  		      const char *pname, const void *pval, int plen,
  		      const char *prop, const void *val, int len,
  		      int create);
  void do_fixup_by_prop_u32(void *fdt,
  			  const char *pname, const void *pval, int plen,
  			  const char *prop, u32 val, int create);
  void do_fixup_by_compat(void *fdt, const char *compat,
  			const char *prop, const void *val, int len, int create);
  void do_fixup_by_compat_u32(void *fdt, const char *compat,
  			    const char *prop, u32 val, int create);

  /**
   * Setup the memory node in the DT. Creates one if none was existing before.
   * Calls fdt_fixup_memory_banks() to populate a single reg pair covering the
   * whole memory.
   *
   * @param blob		FDT blob to update
   * @param start		Begin of DRAM mapping in physical memory
   * @param size		Size of the single memory bank
   * @return 0 if ok, or -1 or -FDT_ERR_... on error
   */

  int fdt_fixup_memory(void *blob, u64 start, u64 size);

  
  /**
   * Fill the DT memory node with multiple memory banks.
   * Creates the node if none was existing before.
   * If banks is 0, it will not touch the existing reg property. This allows
   * boards to not mess with the existing DT setup, which may have been
   * filled in properly before.
   *
   * @param blob		FDT blob to update
   * @param start		Array of size <banks> to hold the start addresses.
   * @param size		Array of size <banks> to hold the size of each region.
   * @param banks		Number of memory banks to create. If 0, the reg
   *			property will be left untouched.
   * @return 0 if ok, or -1 or -FDT_ERR_... on error
   */

  #ifdef CONFIG_ARCH_FIXUP_FDT_MEMORY

  int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[], int banks);

  #else
  static inline int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[],
  					 int banks)
  {
  	return 0;
  }
  #endif

  void fdt_fixup_ethernet(void *fdt);

  int fdt_find_and_setprop(void *fdt, const char *node, const char *prop,
  			 const void *val, int len, int create);

  void fdt_fixup_qe_firmware(void *fdt);

  /**
   * Update native-mode property of display-timings node to the phandle
   * of the timings matching a display by name (case insensitive).
   *
   * see kernel Documentation/devicetree/bindings/video/display-timing.txt
   *
   * @param blob		FDT blob to update
   * @param path		path within dt
   * @param display	name of display timing to match
   * @return 0 if ok, or -FDT_ERR_... on error
   */
  int fdt_fixup_display(void *blob, const char *path, const char *display);

  #if defined(CONFIG_USB_EHCI_FSL) || defined(CONFIG_USB_XHCI_FSL)

  void fsl_fdt_fixup_dr_usb(void *blob, bd_t *bd);

  #else

  static inline void fsl_fdt_fixup_dr_usb(void *blob, bd_t *bd) {}

  #endif /* defined(CONFIG_USB_EHCI_FSL) || defined(CONFIG_USB_XHCI_FSL) */

  #if defined(CONFIG_SYS_FSL_SEC_COMPAT)

  void fdt_fixup_crypto_node(void *blob, int sec_rev);
  #else
  static inline void fdt_fixup_crypto_node(void *blob, int sec_rev) {}
  #endif

  #ifdef CONFIG_PCI
  #include <pci.h>
  int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose);
  #endif

  int fdt_find_or_add_subnode(void *fdt, int parentoffset, const char *name);

  /**
   * Add board-specific data to the FDT before booting the OS.
   *
   * Use CONFIG_SYS_FDT_PAD to ensure there is sufficient space.

   * This function is called if CONFIG_OF_BOARD_SETUP is defined

   *
   * @param blob		FDT blob to update
   * @param bd_t		Pointer to board data
   * @return 0 if ok, or -FDT_ERR_... on error
   */
  int ft_board_setup(void *blob, bd_t *bd);

  /*
   * The keystone2 SOC requires all 32 bit aliased addresses to be converted
   * to their 36 physical format. This has to happen after all fdt nodes
   * are added or modified by the image_setup_libfdt(). The ft_board_setup_ex()
   * called at the end of the image_setup_libfdt() is to do that convertion.
   */
  void ft_board_setup_ex(void *blob, bd_t *bd);

  void ft_cpu_setup(void *blob, bd_t *bd);
  void ft_pci_setup(void *blob, bd_t *bd);

  /**
   * Add system-specific data to the FDT before booting the OS.
   *
   * Use CONFIG_SYS_FDT_PAD to ensure there is sufficient space.
   * This function is called if CONFIG_OF_SYSTEM_SETUP is defined
   *
   * @param blob		FDT blob to update
   * @param bd_t		Pointer to board data
   * @return 0 if ok, or -FDT_ERR_... on error
   */
  int ft_system_setup(void *blob, bd_t *bd);

  void set_working_fdt_addr(ulong addr);

  
  /**
   * shrink down the given blob to minimum size + some extrasize if required
   *
   * @param blob		FDT blob to update
   * @param extrasize	additional bytes needed
   * @return 0 if ok, or -FDT_ERR_... on error
   */
  int fdt_shrink_to_minimum(void *blob, uint extrasize);

  int fdt_increase_size(void *fdt, int add_len);

  int fdt_fixup_nor_flash_size(void *blob);

  #if defined(CONFIG_FDT_FIXUP_PARTITIONS)

  void fdt_fixup_mtdparts(void *fdt, void *node_info, int node_info_size);

  #else
  static inline void fdt_fixup_mtdparts(void *fdt, void *node_info,
  					int node_info_size) {}
  #endif

  void fdt_del_node_and_alias(void *blob, const char *alias);

  u64 fdt_translate_address(const void *blob, int node_offset,
  			  const __be32 *in_addr);

  int fdt_node_offset_by_compat_reg(void *blob, const char *compat,
  					phys_addr_t compat_off);

  int fdt_alloc_phandle(void *blob);

  int fdt_set_phandle(void *fdt, int nodeoffset, uint32_t phandle);

  unsigned int fdt_create_phandle(void *fdt, int nodeoffset);

  int fdt_add_edid(void *blob, const char *compat, unsigned char *buf);

  int fdt_verify_alias_address(void *fdt, int anode, const char *alias,
  			      u64 addr);
  u64 fdt_get_base_address(void *fdt, int node);

  int fdt_read_range(void *fdt, int node, int n, uint64_t *child_addr,
  		   uint64_t *addr, uint64_t *len);

  enum fdt_status {
  	FDT_STATUS_OKAY,
  	FDT_STATUS_DISABLED,
  	FDT_STATUS_FAIL,
  	FDT_STATUS_FAIL_ERROR_CODE,
  };
  int fdt_set_node_status(void *fdt, int nodeoffset,
  			enum fdt_status status, unsigned int error_code);
  static inline int fdt_status_okay(void *fdt, int nodeoffset)
  {
  	return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_OKAY, 0);
  }
  static inline int fdt_status_disabled(void *fdt, int nodeoffset)
  {
  	return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_DISABLED, 0);
  }

  static inline int fdt_status_fail(void *fdt, int nodeoffset)
  {
  	return fdt_set_node_status(fdt, nodeoffset, FDT_STATUS_FAIL, 0);
  }

  int fdt_set_status_by_alias(void *fdt, const char *alias,

  			    enum fdt_status status, unsigned int error_code);

  static inline int fdt_status_okay_by_alias(void *fdt, const char *alias)

  {
  	return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_OKAY, 0);
  }

  static inline int fdt_status_disabled_by_alias(void *fdt, const char *alias)

  {
  	return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_DISABLED, 0);
  }

  static inline int fdt_status_fail_by_alias(void *fdt, const char *alias)
  {
  	return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_FAIL, 0);
  }

  /* Helper to read a big number; size is in cells (not bytes) */
  static inline u64 of_read_number(const fdt32_t *cell, int size)
  {
  	u64 r = 0;
  	while (size--)
  		r = (r << 32) | fdt32_to_cpu(*(cell++));
  	return r;
  }

  void of_bus_default_count_cells(const void *blob, int parentoffset,

  					int *addrc, int *sizec);

  int ft_verify_fdt(void *fdt);
  int arch_fixup_memory_node(void *blob);

  int fdt_setup_simplefb_node(void *fdt, int node, u64 base_address, u32 width,
  			    u32 height, u32 stride, const char *format);

  #endif /* ifdef CONFIG_OF_LIBFDT */

  
  #ifdef USE_HOSTCC
  int fdtdec_get_int(const void *blob, int node, const char *prop_name,
  		int default_val);
  #endif

  #endif /* ifndef __FDT_SUPPORT_H */