/*
 * (C) Copyright 2007
 * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * 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; either version 2 of
 * the License, or (at your option) any later version.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#ifndef __FDT_SUPPORT_H
#define __FDT_SUPPORT_H

#ifdef CONFIG_OF_LIBFDT

#include <libfdt.h>

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

/**
 * fdt_ensure_chosen() - Find or create the /chosen node
 *
 * @fdt: Device tree blob to check/update
 * @return offset of /chosen node if found or created, or -FDT_ERR_...
 * on error
 */
int fdt_ensure_chosen(void *fdt);

int fdt_chosen(void *fdt, int force);
int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end, int force);
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);
int fdt_fixup_memory(void *blob, u64 start, u64 size);
int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[], int banks);
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);

#if defined(CONFIG_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_MPH_USB)
void fdt_fixup_dr_usb(void *blob, bd_t *bd);
#else
static inline void fdt_fixup_dr_usb(void *blob, bd_t *bd) {}
#endif /* defined(CONFIG_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_MPH_USB) */

#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

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

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

/* Board-specific function to set up system information in fdt */
int ft_system_setup(void *blob, bd_t *bd);

void set_working_fdt_addr(void *addr);
int fdt_resize(void *blob);
int fdt_increase_size(void *fdt, int add_len);

int fdt_fixup_nor_flash_size(void *blob);

void fdt_fixup_mtdparts(void *fdt, void *node_info, int node_info_size);
void fdt_del_node_and_alias(void *blob, const char *alias);
u64 fdt_translate_address(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);

/* Print an FDT on the console */
void fdt_print(void *fdt);

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);
}

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);
}

/**
 * fdt_get_cells_len() - Get the length of a type of cell in top-level nodes
 *
 * Returns the length of the cell type in bytes (4 or 8).
 *
 * @blob: Pointer to device tree blob
 * @nr_cells_name: Name to lookup, e.g. "#address-cells"
 */
int fdt_get_cells_len(const void *blob, char *nr_cells_name);

#endif /* ifdef CONFIG_OF_LIBFDT */
#endif /* ifndef __FDT_SUPPORT_H */