forked from Minki/linux
edc79a2f3e
The nvram log partition stuff currently in nvram_64.c is really pseries specific. It isn't actually used on anything else (despite the fact that we ran the code to setup the partition on anything except powermac) and the log format is specific to pseries RTAS implementation. So move it where it belongs Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
112 lines
3.3 KiB
C
112 lines
3.3 KiB
C
/*
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* NVRAM definitions and access functions.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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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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/* Signatures for nvram partitions */
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#define NVRAM_SIG_SP 0x02 /* support processor */
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#define NVRAM_SIG_OF 0x50 /* open firmware config */
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#define NVRAM_SIG_FW 0x51 /* general firmware */
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#define NVRAM_SIG_HW 0x52 /* hardware (VPD) */
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#define NVRAM_SIG_FLIP 0x5a /* Apple flip/flop header */
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#define NVRAM_SIG_APPL 0x5f /* Apple "system" (???) */
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#define NVRAM_SIG_SYS 0x70 /* system env vars */
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#define NVRAM_SIG_CFG 0x71 /* config data */
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#define NVRAM_SIG_ELOG 0x72 /* error log */
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#define NVRAM_SIG_VEND 0x7e /* vendor defined */
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#define NVRAM_SIG_FREE 0x7f /* Free space */
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#define NVRAM_SIG_OS 0xa0 /* OS defined */
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#define NVRAM_SIG_PANIC 0xa1 /* Apple OSX "panic" */
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#ifdef __KERNEL__
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#include <linux/errno.h>
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#include <linux/list.h>
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#ifdef CONFIG_PPC_PSERIES
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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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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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#endif /* __KERNEL__ */
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/* PowerMac specific nvram stuffs */
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enum {
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pmac_nvram_OF, /* Open Firmware partition */
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pmac_nvram_XPRAM, /* MacOS XPRAM partition */
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pmac_nvram_NR /* MacOS Name Registry partition */
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};
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#ifdef __KERNEL__
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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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/* Synchronize NVRAM */
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extern void nvram_sync(void);
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/* Determine NVRAM size */
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extern ssize_t nvram_get_size(void);
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/* Normal access to NVRAM */
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extern unsigned char nvram_read_byte(int i);
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extern void nvram_write_byte(unsigned char c, int i);
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#endif
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/* Some offsets in XPRAM */
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#define PMAC_XPRAM_MACHINE_LOC 0xe4
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#define PMAC_XPRAM_SOUND_VOLUME 0x08
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/* Machine location structure in PowerMac XPRAM */
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struct pmac_machine_location {
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unsigned int latitude; /* 2+30 bit Fractional number */
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unsigned int longitude; /* 2+30 bit Fractional number */
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unsigned int delta; /* mix of GMT delta and DLS */
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};
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/*
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* /dev/nvram ioctls
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*
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* Note that PMAC_NVRAM_GET_OFFSET is still supported, but is
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* definitely obsolete. Do not use it if you can avoid it
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*/
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#define OBSOLETE_PMAC_NVRAM_GET_OFFSET \
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_IOWR('p', 0x40, int)
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#define IOC_NVRAM_GET_OFFSET _IOWR('p', 0x42, int) /* Get NVRAM partition offset */
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#define IOC_NVRAM_SYNC _IO('p', 0x43) /* Sync NVRAM image */
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#endif /* _ASM_POWERPC_NVRAM_H */
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