arch/x86: Refactor the SMBIOS type 17 write function

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>

1 files changed, 10 insertions, 0 deletions

diff --git a/src/include/device/dram/spd.h b/src/include/device/dram/spd.h
index c677f4ce9b..1a86ea374f 100644
--- a/src/include/device/dram/spd.h
+++ b/src/include/device/dram/spd.h
@@ -3,8 +3,18 @@
 #ifndef DEVICE_DRAM_SPD_H
 #define DEVICE_DRAM_SPD_H
 
+#include <smbios.h>
 #include <types.h>
 
 const char *spd_manufacturer_name(const uint16_t mod_id);
 
+struct spd_info {
+	uint16_t type_detail;
+	uint8_t form_factor;
+};
+
+void get_spd_info(smbios_memory_type memory_type, uint8_t module_type, struct spd_info *info);
+uint8_t convert_form_factor_to_module_type(smbios_memory_type memory_type,
+		smbios_memory_form_factor form_factor);
+
 #endif /* DEVICE_DRAM_SPD_H */