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phoenix |
/*
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* PreP compliant NVRAM access
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* This needs to be updated for PPC64
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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 _PPC64_NVRAM_H
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#define _PPC64_NVRAM_H
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#define NVRW_CNT 0x20
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#define NVRAM_HEADER_LEN 16 /* sizeof(struct nvram_header) */
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#define NVRAM_BLOCK_LEN 16
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#define NVRAM_MAX_REQ (2080/NVRAM_BLOCK_LEN)
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#define NVRAM_MIN_REQ (1056/NVRAM_BLOCK_LEN)
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#define NVRAM_AS0 0x74
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#define NVRAM_AS1 0x75
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#define NVRAM_DATA 0x77
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/* RTC Offsets */
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#define MOTO_RTC_SECONDS 0x1FF9
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#define MOTO_RTC_MINUTES 0x1FFA
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#define MOTO_RTC_HOURS 0x1FFB
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#define MOTO_RTC_DAY_OF_WEEK 0x1FFC
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#define MOTO_RTC_DAY_OF_MONTH 0x1FFD
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#define MOTO_RTC_MONTH 0x1FFE
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#define MOTO_RTC_YEAR 0x1FFF
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#define MOTO_RTC_CONTROLA 0x1FF8
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#define MOTO_RTC_CONTROLB 0x1FF9
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#ifndef BCD_TO_BIN
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#define BCD_TO_BIN(val) ((val)=((val)&15) + ((val)>>4)*10)
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#endif
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#ifndef BIN_TO_BCD
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#define BIN_TO_BCD(val) ((val)=(((val)/10)<<4) + (val)%10)
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#endif
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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_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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/* If change this size, then change the size of NVRAM_HEADER_LEN */
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struct nvram_header {
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unsigned char signature;
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unsigned char checksum;
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unsigned short length;
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char name[12];
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};
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struct nvram_partition {
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struct list_head partition;
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struct nvram_header header;
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unsigned int index;
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};
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ssize_t read_nvram(char *buf, size_t count, loff_t *index);
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ssize_t write_nvram(char *buf, size_t count, loff_t *index);
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int write_error_log_nvram(char * buff, int length, unsigned int err_type);
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int read_error_log_nvram(char * buff, int length, unsigned int * err_type);
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int clear_error_log_nvram(void);
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void print_nvram_partitions(char * label);
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#endif /* _PPC64_NVRAM_H */
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