6de8b42482
List of changes:
1. Create Module Type macros as per Memory Type
(i.e. DDR2/DDR3/DDR4/DDR5/LPDDR4/LPDDR5) and fix compilation
issue due to renaming of existing macros due to scoping the Memory
Type.
2. Use dedicated Memory Type and Module type for `Form Factor`
and `TypeDetail` conversion using `get_spd_info()` function.
3. Create a new API (convert_form_factor_to_module_type()) for
`Form Factor` to 'Module type' conversion as per `Memory Type`.
4. Add new argument as `Memory Type` to
smbios_form_factor_to_spd_mod_type() so that it can internally
call convert_form_factor_to_module_type() for `Module Type`
conversion.
5. Update `test_smbios_form_factor_to_spd_mod_type()` to
accommodate different memory types.
6. Skip fixed module type to form factor conversion using DDR2 SPD4
specification (inside dimm_info_fill()).
Refer to datasheet SPD4.1.2.M-1 for LPDDRx and SPD4.1.2.L-3 for DDRx.
BUG=b:194659789
TEST=Refer to dmidecode -t 17 output as below:
Without this code change:
Handle 0x0012, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x000A
Error Information Handle: Not Provided
Total Width: 16 bits
Data Width: 16 bits
Size: 2048 MB
Form Factor: Unknown
....
With this code change:
Handle 0x0012, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x000A
Error Information Handle: Not Provided
Total Width: 16 bits
Data Width: 16 bits
Size: 2048 MB
Form Factor: Row Of Chips
....
Change-Id: Ia337ac8f50b61ae78d86a07c7a86aa9c248bad50
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56628
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jakub Czapiga <jacz@semihalf.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
34 lines
862 B
C
34 lines
862 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#ifndef _DIMM_INFO_UTIL_H_
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#define _DIMM_INFO_UTIL_H_
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#include <smbios.h>
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#include <stdint.h>
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/**
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* Convert the SMBIOS bit widths into an SPD encoded width.
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*
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* Use this when setting dimm_info.bus_width if the raw SPD values are not
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* available.
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*/
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uint8_t smbios_bus_width_to_spd_width(uint8_t ddr_type, uint16_t total_width,
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uint16_t data_width);
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/**
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* Convert the SMBIOS size values into the total number of MiB.
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*
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* Use this when setting dimm_info.dimm_size.
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*/
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uint32_t smbios_memory_size_to_mib(uint16_t memory_size,
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uint32_t extended_size);
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/**
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* Convert the SMBIOS form factor to the SPD module type.
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*
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* Use this when setting dimm_info.mod_type.
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*/
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uint8_t smbios_form_factor_to_spd_mod_type(smbios_memory_type memory_type,
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smbios_memory_form_factor form_factor);
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#endif
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