2874c5fd28
Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
95 lines
2.8 KiB
C
95 lines
2.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* NVRAM definitions and access functions.
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*/
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#ifndef _ASM_POWERPC_NVRAM_H
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#define _ASM_POWERPC_NVRAM_H
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#include <linux/types.h>
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#include <linux/errno.h>
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#include <linux/list.h>
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#include <uapi/asm/nvram.h>
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/*
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* Set oops header version to distinguish between old and new format header.
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* lnx,oops-log partition max size is 4000, header version > 4000 will
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* help in identifying new header.
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*/
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#define OOPS_HDR_VERSION 5000
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struct err_log_info {
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__be32 error_type;
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__be32 seq_num;
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};
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struct nvram_os_partition {
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const char *name;
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int req_size; /* desired size, in bytes */
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int min_size; /* minimum acceptable size (0 means req_size) */
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long size; /* size of data portion (excluding err_log_info) */
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long index; /* offset of data portion of partition */
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bool os_partition; /* partition initialized by OS, not FW */
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};
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struct oops_log_info {
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__be16 version;
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__be16 report_length;
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__be64 timestamp;
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} __attribute__((packed));
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extern struct nvram_os_partition oops_log_partition;
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#ifdef CONFIG_PPC_PSERIES
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extern struct nvram_os_partition rtas_log_partition;
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extern int nvram_write_error_log(char * buff, int length,
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unsigned int err_type, unsigned int err_seq);
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extern int nvram_read_error_log(char * buff, int length,
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unsigned int * err_type, unsigned int *err_seq);
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extern int nvram_clear_error_log(void);
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extern int pSeries_nvram_init(void);
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#endif /* CONFIG_PPC_PSERIES */
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#ifdef CONFIG_MMIO_NVRAM
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extern int mmio_nvram_init(void);
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#else
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static inline int mmio_nvram_init(void)
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{
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return -ENODEV;
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}
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#endif
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extern int __init nvram_scan_partitions(void);
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extern loff_t nvram_create_partition(const char *name, int sig,
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int req_size, int min_size);
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extern int nvram_remove_partition(const char *name, int sig,
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const char *exceptions[]);
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extern int nvram_get_partition_size(loff_t data_index);
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extern loff_t nvram_find_partition(const char *name, int sig, int *out_size);
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/* Return partition offset in nvram */
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extern int pmac_get_partition(int partition);
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/* Direct access to XPRAM on PowerMacs */
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extern u8 pmac_xpram_read(int xpaddr);
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extern void pmac_xpram_write(int xpaddr, u8 data);
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/* Initialize NVRAM OS partition */
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extern int __init nvram_init_os_partition(struct nvram_os_partition *part);
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/* Initialize NVRAM oops partition */
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extern void __init nvram_init_oops_partition(int rtas_partition_exists);
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/* Read a NVRAM partition */
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extern int nvram_read_partition(struct nvram_os_partition *part, char *buff,
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int length, unsigned int *err_type,
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unsigned int *error_log_cnt);
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/* Write to NVRAM OS partition */
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extern int nvram_write_os_partition(struct nvram_os_partition *part,
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char *buff, int length,
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unsigned int err_type,
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unsigned int error_log_cnt);
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#endif /* _ASM_POWERPC_NVRAM_H */
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