71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2010 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef GRUB_SMBUS_HEADER
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#define GRUB_SMBUS_HEADER 1
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#define GRUB_SMB_RAM_START_ADDR 0x50
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#define GRUB_SMB_RAM_NUM_MAX 0x08
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#define GRUB_SMBUS_SPD_MEMORY_TYPE_ADDR 2
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#define GRUB_SMBUS_SPD_MEMORY_TYPE_DDR2 8
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#define GRUB_SMBUS_SPD_MEMORY_NUM_BANKS_ADDR 17
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#define GRUB_SMBUS_SPD_MEMORY_NUM_ROWS_ADDR 3
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#define GRUB_SMBUS_SPD_MEMORY_NUM_COLUMNS_ADDR 4
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#define GRUB_SMBUS_SPD_MEMORY_NUM_OF_RANKS_ADDR 5
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#define GRUB_SMBUS_SPD_MEMORY_NUM_OF_RANKS_MASK 0x7
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#define GRUB_SMBUS_SPD_MEMORY_CAS_LATENCY_ADDR 18
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#define GRUB_SMBUS_SPD_MEMORY_CAS_LATENCY_MIN_VALUE 5
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#define GRUB_SMBUS_SPD_MEMORY_TRAS_ADDR 30
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#define GRUB_SMBUS_SPD_MEMORY_TRTP_ADDR 38
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#ifndef ASM_FILE
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struct grub_smbus_spd
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{
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grub_uint8_t written_size;
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grub_uint8_t log_total_flash_size;
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grub_uint8_t memory_type;
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union
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{
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grub_uint8_t unknown[253];
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struct {
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grub_uint8_t num_rows;
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grub_uint8_t num_columns;
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grub_uint8_t num_of_ranks;
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grub_uint8_t unused1[12];
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grub_uint8_t num_of_banks;
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grub_uint8_t unused2[2];
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grub_uint8_t cas_latency;
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grub_uint8_t unused3[9];
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grub_uint8_t rank_capacity;
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grub_uint8_t unused4[1];
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grub_uint8_t tras;
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grub_uint8_t unused5[7];
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grub_uint8_t trtp;
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grub_uint8_t unused6[31];
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grub_uint8_t part_number[18];
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grub_uint8_t unused7[165];
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} ddr2;
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};
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};
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#endif
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#endif
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