Versions Compared

Version Old Version 24 New Version Current
Changes made by

Lior Jigalo

Lior Jigalo

Saved on

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

...

Panel
bgColor#FFFFFF

eeprom example for this :

Code Block
python3 TLVwriter.py 3 0x50 TLV_CODE_SYS_NAME "EmbeddedDevice" \
      TLV_CODE_SYS_SKU "ED-2024" \
      TLV_CODE_SYS_SERIAL_NUMBER "SN123456789" \
      TLV_CODE_SYS_VERSION "01.02" \
      TLV_CODE_FAMILY "Industrial" \
      TLV_CODE_MANUF_NAME "Solid-Run" \
      TLV_CODE_MANUF_DATE "2024-03-11" \
      TLV_CODE_PLATFORM_NAME "Bedrock-IPC"

00: 54 6c 76 49 6e 66 6f 00 01 65 0030 0e 45 6d 62 TlvInfo.?e.0?Emb
10: 65 64 64 65 64 44 65 76 69 63 65 3107 45 44 2d eddedDevice1?ED-
20: 32 30 32 34 32 0b 53 4e 31 32 33 34 35 36 37 38 20242?SN12345678
30: 39 33 05 30 31 2E 30 32 20 0a 49 6e 64 75 73 74 93?01.02?Indust
40: 72 69 61 6c 25 09 73 6f 6c 69 64 2d 72 75 6e 23 rial%.solid-run#
50: 0a 32 30 32 34 2d 30 33 2d 31 31 24 0b 42 65 64 .2024-03-11$.Bed
60: 72 6f 63 6b 2d 49 50 43 fe 04 6e 7e c0 fd 00 00 rock-IPC??n~??
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
80: ……

header

version

Total Payload Length (little endian)

Type

Length

Value

crc checksum TLV

...

Info

Finding the I2C Bus Number

To determine the correct I2C bus number, run the following command:

Code Block
sudo i2cdetect -y 1

If no EEPROM device is found, repeat the command with different bus numbers (e.g., 2, 3, 4, 5 etc.) until you detect an address 0x50 or 0x56. Once found, use the corresponding bus number in the script.

Example:

Code Block
sudo i2cdetect -y 23

If the output shows:

Code Block
     0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F
00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
50: 50 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

Then bus 2 3 and address 0x50 should be used in the script.

Note

Bus 2 or 5 usually has the memory SPD on addresses 0x50 & 0x51, do not write to them!

...

Anchor
TLV_KEYS_ANCH
TLV_KEYS_ANCH
Supported TLV Keys

Each TLV Key has a Hex Code, Max Length, and belongs to a DMIDecode Type.

System Information (

...

SMBIOS Type 1)

TLV Key

Max Length (bytes)

BIOS path

TLV_CODE_FAMILY

20

-

TLV_CODE_MANUF_DATE

10

-

TLV_CODE_PLATFORM_NAME

20

-

TLV_CODE_MANUF_NAME

20

-

TLV_CODE_VENDOR_NAME

20

-

TLV_CODE_SYS_NAME

20

Main → Detailed Configuration Information → Model

TLV_CODE_SYS_SKU

20

Main screen

TLV_CODE_SYS_SERIAL_NUMBER

24

Main screen

TLV_CODE_SYS_VERSION

5

-

NIO Information (

...

SMBIOS Type 2)

TLV Key

Max Length (bytes)

TLV_CODE_NIO_NAME

20

TLV_CODE_NIO_SERIAL_NUMBER

24

TLV_CODE_NIO_VERSION

5

Chassis Information (

...

SMBIOS Type 3)

TLV Key

Max Length (bytes)

TLV_CODE_CHS_SERIAL_NUMBER

24

TLV_CODE_CHS_VERSION

5

...