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https://gitee.com/bianbu-linux/linux-6.6
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c059ee9d77
Add a cfe_die() implementation which is useful when the kernel does an early panic and no console is registered. This allows us to print useful diagnostics such as an invalid DTB having been configured/selected. Since the BMIPS_GENERIC kernel can be built with support for multiple processors, we need to do a runtime determination of the type of CPU that we are executing on to perform the appropriate XKS01 disabling. Since cfe_init() + cfe_die() could be conceivably called at very early stages of the kernel boot, before cpu_probe(), we do not rely on the structure(s) populated by cpu_probe(). Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
111 lines
3.1 KiB
C
111 lines
3.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (C) 2000, 2001, 2002 Broadcom Corporation
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*/
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/*
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* Broadcom Common Firmware Environment (CFE)
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*
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* This file contains declarations for doing callbacks to
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* cfe from an application. It should be the only header
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* needed by the application to use this library
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*
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* Authors: Mitch Lichtenberg, Chris Demetriou
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*/
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#ifndef CFE_API_H
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#define CFE_API_H
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#include <linux/types.h>
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#include <linux/string.h>
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typedef long intptr_t;
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/*
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* Constants
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*/
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/* Seal indicating CFE's presence, passed to user program. */
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#define CFE_EPTSEAL 0x43464531
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#define CFE_MI_RESERVED 0 /* memory is reserved, do not use */
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#define CFE_MI_AVAILABLE 1 /* memory is available */
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#define CFE_FLG_WARMSTART 0x00000001
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#define CFE_FLG_FULL_ARENA 0x00000001
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#define CFE_FLG_ENV_PERMANENT 0x00000001
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#define CFE_CPU_CMD_START 1
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#define CFE_CPU_CMD_STOP 0
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#define CFE_STDHANDLE_CONSOLE 0
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#define CFE_DEV_NETWORK 1
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#define CFE_DEV_DISK 2
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#define CFE_DEV_FLASH 3
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#define CFE_DEV_SERIAL 4
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#define CFE_DEV_CPU 5
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#define CFE_DEV_NVRAM 6
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#define CFE_DEV_CLOCK 7
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#define CFE_DEV_OTHER 8
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#define CFE_DEV_MASK 0x0F
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#define CFE_CACHE_FLUSH_D 1
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#define CFE_CACHE_INVAL_I 2
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#define CFE_CACHE_INVAL_D 4
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#define CFE_CACHE_INVAL_L2 8
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#define CFE_FWI_64BIT 0x00000001
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#define CFE_FWI_32BIT 0x00000002
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#define CFE_FWI_RELOC 0x00000004
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#define CFE_FWI_UNCACHED 0x00000008
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#define CFE_FWI_MULTICPU 0x00000010
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#define CFE_FWI_FUNCSIM 0x00000020
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#define CFE_FWI_RTLSIM 0x00000040
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typedef struct {
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int64_t fwi_version; /* major, minor, eco version */
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int64_t fwi_totalmem; /* total installed mem */
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int64_t fwi_flags; /* various flags */
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int64_t fwi_boardid; /* board ID */
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int64_t fwi_bootarea_va; /* VA of boot area */
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int64_t fwi_bootarea_pa; /* PA of boot area */
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int64_t fwi_bootarea_size; /* size of boot area */
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} cfe_fwinfo_t;
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/*
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* Defines and prototypes for functions which take no arguments.
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*/
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int64_t cfe_getticks(void);
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/*
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* Defines and prototypes for the rest of the functions.
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*/
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int cfe_close(int handle);
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int cfe_cpu_start(int cpu, void (*fn) (void), long sp, long gp, long a1);
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int cfe_cpu_stop(int cpu);
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int cfe_enumenv(int idx, char *name, int namelen, char *val, int vallen);
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int cfe_enummem(int idx, int flags, uint64_t * start, uint64_t * length,
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uint64_t * type);
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int cfe_exit(int warm, int status);
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int cfe_flushcache(int flg);
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int cfe_getdevinfo(char *name);
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int cfe_getenv(char *name, char *dest, int destlen);
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int cfe_getfwinfo(cfe_fwinfo_t * info);
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int cfe_getstdhandle(int flg);
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int cfe_init(uint64_t handle, uint64_t ept);
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int cfe_inpstat(int handle);
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int cfe_ioctl(int handle, unsigned int ioctlnum, unsigned char *buffer,
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int length, int *retlen, uint64_t offset);
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int cfe_open(char *name);
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int cfe_read(int handle, unsigned char *buffer, int length);
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int cfe_readblk(int handle, int64_t offset, unsigned char *buffer,
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int length);
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int cfe_setenv(char *name, char *val);
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int cfe_write(int handle, const char *buffer, int length);
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int cfe_writeblk(int handle, int64_t offset, const char *buffer,
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int length);
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extern unsigned long cfe_seal;
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__printf(1, 2) void cfe_die(char *fmt, ...);
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#endif /* CFE_API_H */
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