1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2003 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SPD_DATA_H 28 #define _SPD_DATA_H 29 30 #ifdef __cplusplus 31 extern "C" { 32 #endif 33 34 #include <stddef.h> 35 #include <sys/types.h> 36 37 size_t get_sp_sec_hdr(void *sec_hdr, size_t sec_hdr_len); 38 size_t get_sp_seg_hdr(void *seg_hdr, size_t seg_hdr_len); 39 int get_spd_data(int fd, char *spd_data, size_t ctr_len, off_t ctr_offset); 40 int cvrt_dim_data(const char *spd_data, size_t spd_data_len, 41 uchar_t **sp_seg_ptr, size_t *sp_seg_len); 42 43 enum spd_memtype { 44 SPDMEM_RESERVED = 0, 45 SPDMEM_FPM_DRAM, 46 SPDMEM_EDO, 47 SPDMEM_PIPE, 48 SPDMEM_SDRAM, 49 SPDMEM_ROM, 50 SPDMEM_SGRAM_DDR, 51 SPDMEM_SDRAM_DDR, 52 SPDMEM_DDR2_SDRAM 53 }; 54 55 typedef struct { 56 uchar_t spd_len; /* bytes written by manufacturer */ 57 uchar_t spd_max_len; /* total available prom space */ 58 uchar_t memory_type; /* e.g. SDRAM DDR = 0x07 */ 59 uchar_t n_rows; /* row address bits */ 60 uchar_t n_cols; /* column address bits */ 61 uchar_t n_mod_rows; /* number of module rows */ 62 uchar_t ls_data_width; /* e.g. 72 bits */ 63 uchar_t ms_data_width; 64 uchar_t vddq_if; /* e.g. SSTL 2.5V = 0x04 */ 65 uchar_t cycle_time25; /* cycle time at CAS latency 2.5 */ 66 uchar_t access_time25; 67 uchar_t config; /* e.g. ECC = 0x02 */ 68 uchar_t refresh; /* e.g. 7.8uS & self refresh = 0x82 */ 69 uchar_t primary_width; 70 uchar_t err_chk_width; 71 uchar_t tCCD; 72 uchar_t burst_lengths; /* e.g. 2,4,8 = 0x0e */ 73 uchar_t n_banks; 74 uchar_t cas_lat; 75 uchar_t cs_lat; 76 uchar_t we_lat; 77 uchar_t mod_attrs; 78 uchar_t dev_attrs; 79 uchar_t cycle_time20; /* cycle time at CAS latency 2.0 */ 80 uchar_t access_time20; 81 uchar_t cycle_time15; 82 uchar_t access_time15; 83 uchar_t tRP; 84 uchar_t tRRD; 85 uchar_t tRCD; 86 uchar_t tRAS; 87 uchar_t mod_row_density; 88 uchar_t addr_ip_setup; 89 uchar_t addr_ip_hold; 90 uchar_t data_ip_setup; 91 uchar_t data_ip_hold; 92 uchar_t superset[62 - 36]; 93 uchar_t spd_rev; 94 uchar_t chksum_0_62; 95 uchar_t jedec[8]; 96 uchar_t manu_loc; 97 uchar_t manu_part_no[91 - 73]; 98 uchar_t manu_rev_pcb; 99 uchar_t manu_rev_comp; 100 uchar_t manu_year; 101 uchar_t manu_week; 102 uchar_t asmb_serial_no[4]; 103 uchar_t manu_specific[128 - 99]; 104 } spd_data_t; 105 106 /* 107 * sample section and SP segment headers 108 */ 109 #define SP_SEC_HDR \ 110 { 0x08, 0x00, 0x01, 0x00, 0x33, 0x01 } 111 112 #define SP_SEG_HDR \ 113 { 'S', 'P', 0x00, 0x00, 0x41, 0xb6, 0x00, 0x00, 0x00, 0x8d } 114 115 /* 116 * sample SP segment 117 */ 118 #define SP_DATA { \ 119 0xc1, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 120 0x00, 0x00, 0xf0, 0x00, 0xfb, 0x00, 0x00, 0x00, \ 121 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ 122 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ 123 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ 124 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ 125 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ 126 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ 127 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ 128 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 129 0x0c, 0x00, 0x00, 0x00, 0x00 } 130 131 /* 132 * offsets of records in SP_DATA 133 */ 134 #define DIMM_CAP_OFF 2 135 #define SPD_R_OFF 13 136 137 /* 138 * offsets of certain fields within SPD-R record 139 */ 140 #define DATA_WIDTH 6 141 #define MANUF_ID 64 142 #define MANUF_LOC 66 143 #define MANUF_YEAR 87 144 #define MANUF_WEEK 89 145 /* length of complete SPD-R record */ 146 #define SPD_R_LEN 123 147 148 #ifdef __cplusplus 149 } 150 #endif 151 152 #endif /* _SPD_DATA_H */ 153