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name : cfe_api.h
 /* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright (C) 2000, 2001, 2002 Broadcom Corporation
 */
/*
 * Broadcom Common Firmware Environment (CFE)
 *
 * This file contains declarations for doing callbacks to
 * cfe from an application.  It should be the only header
 * needed by the application to use this library
 *
 * Authors:  Mitch Lichtenberg, Chris Demetriou
 */
#ifndef CFE_API_H
#define CFE_API_H

#include <linux/types.h>
#include <linux/string.h>

/*
 * Constants
 */

/* Seal indicating CFE's presence, passed to user program. */
#define CFE_EPTSEAL 0x43464531

#define CFE_MI_RESERVED 0	/* memory is reserved, do not use */
#define CFE_MI_AVAILABLE 1	/* memory is available */

#define CFE_FLG_WARMSTART     0x00000001
#define CFE_FLG_FULL_ARENA    0x00000001
#define CFE_FLG_ENV_PERMANENT 0x00000001

#define CFE_CPU_CMD_START 1
#define CFE_CPU_CMD_STOP 0

#define CFE_STDHANDLE_CONSOLE	0

#define CFE_DEV_NETWORK		1
#define CFE_DEV_DISK		2
#define CFE_DEV_FLASH		3
#define CFE_DEV_SERIAL		4
#define CFE_DEV_CPU		5
#define CFE_DEV_NVRAM		6
#define CFE_DEV_CLOCK		7
#define CFE_DEV_OTHER		8
#define CFE_DEV_MASK		0x0F

#define CFE_CACHE_FLUSH_D	1
#define CFE_CACHE_INVAL_I	2
#define CFE_CACHE_INVAL_D	4
#define CFE_CACHE_INVAL_L2	8

#define CFE_FWI_64BIT		0x00000001
#define CFE_FWI_32BIT		0x00000002
#define CFE_FWI_RELOC		0x00000004
#define CFE_FWI_UNCACHED	0x00000008
#define CFE_FWI_MULTICPU	0x00000010
#define CFE_FWI_FUNCSIM		0x00000020
#define CFE_FWI_RTLSIM		0x00000040

typedef struct {
	int64_t fwi_version;		/* major, minor, eco version */
	int64_t fwi_totalmem;		/* total installed mem */
	int64_t fwi_flags;		/* various flags */
	int64_t fwi_boardid;		/* board ID */
	int64_t fwi_bootarea_va;	/* VA of boot area */
	int64_t fwi_bootarea_pa;	/* PA of boot area */
	int64_t fwi_bootarea_size;	/* size of boot area */
} cfe_fwinfo_t;


/*
 * Defines and prototypes for functions which take no arguments.
 */
int64_t cfe_getticks(void);

/*
 * Defines and prototypes for the rest of the functions.
 */
int cfe_close(int handle);
int cfe_cpu_start(int cpu, void (*fn) (void), long sp, long gp, long a1);
int cfe_cpu_stop(int cpu);
int cfe_enumenv(int idx, char *name, int namelen, char *val, int vallen);
int cfe_enummem(int idx, int flags, uint64_t * start, uint64_t * length,
		uint64_t * type);
int cfe_exit(int warm, int status);
int cfe_flushcache(int flg);
int cfe_getdevinfo(char *name);
int cfe_getenv(char *name, char *dest, int destlen);
int cfe_getfwinfo(cfe_fwinfo_t * info);
int cfe_getstdhandle(int flg);
int cfe_init(uint64_t handle, uint64_t ept);
int cfe_inpstat(int handle);
int cfe_ioctl(int handle, unsigned int ioctlnum, unsigned char *buffer,
	      int length, int *retlen, uint64_t offset);
int cfe_open(char *name);
int cfe_read(int handle, unsigned char *buffer, int length);
int cfe_readblk(int handle, int64_t offset, unsigned char *buffer,
		int length);
int cfe_setenv(char *name, char *val);
int cfe_write(int handle, const char *buffer, int length);
int cfe_writeblk(int handle, int64_t offset, const char *buffer,
		 int length);
extern unsigned long cfe_seal;
__printf(1, 2) void cfe_die(char *fmt, ...);

#endif				/* CFE_API_H */
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