663f04eaad
Add library to: 1. add spd.bin in cbfs, generated from mainboard/spd/*.spd.hex files. 2. runtime get spd data with spd index as input. 3. fetch spd over smbus using early smbus functions. BUG=None BRANCH=None TEST=None Change-Id: I44fe1cdb883dd1037484d4bb5c87d2d4f9862bf8 Signed-off-by: Naresh G Solanki <naresh.solanki@intel.com> Reviewed-on: https://review.coreboot.org/17434 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) Reviewed-on: https://chromium-review.googlesource.com/415643 Commit-Ready: Furquan Shaikh <furquan@chromium.org> Tested-by: Furquan Shaikh <furquan@chromium.org>
57 lines
1.6 KiB
C
57 lines
1.6 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2016 Intel Corporation.
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*
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* This program 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; version 2 of the License.
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*
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* This program 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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#ifndef SPD_BIN_H
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#define SPD_BIN_H
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#include <arch/early_variables.h>
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#include <stdint.h>
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#include <commonlib/region.h>
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#define SPD_PAGE_LEN 256
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#define SPD_PAGE_LEN_DDR4 512
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#define SPD_PAGE_0 (0x6C >> 1)
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#define SPD_PAGE_1 (0x6E >> 1)
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#define SPD_DRAM_TYPE 2
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#define SPD_DRAM_DDR3 0x0B
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#define SPD_DRAM_LPDDR3_INTEL 0xF1
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#define SPD_DRAM_LPDDR3_JEDEC 0x0F
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#define SPD_DRAM_DDR4 0x0C
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#define SPD_DENSITY_BANKS 4
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#define SPD_ADDRESSING 5
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#define SPD_ORGANIZATION 7
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#define SPD_BUS_DEV_WIDTH 8
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#define DDR3_SPD_PART_OFF 128
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#define DDR3_SPD_PART_LEN 18
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#define LPDDR3_SPD_PART_OFF 128
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#define LPDDR3_SPD_PART_LEN 18
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#define DDR4_SPD_PART_OFF 329
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#define DDR4_SPD_PART_LEN 20
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#define LPDDR4_SPD_PART_OFF 329
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#define LPDDR4_SPD_PART_LEN 20
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struct spd_block {
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u8 *spd_array[CONFIG_DIMM_MAX];
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/* Length of each dimm */
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u16 len;
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};
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void print_spd_info(uint8_t spd[]);
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/* Return 0 on success & -1 on failure */
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int get_spd_cbfs_rdev(struct region_device *spd_rdev, u8 spd_index);
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void dump_spd_info(struct spd_block *blk);
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void get_spd_smbus(struct spd_block *blk);
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#endif
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