Board:lenovo/t530

The wiki is being retired!

Documentation is now handled by the same processes we use for code: Add something to the Documentation/ directory in the coreboot repo, and it will be rendered to https://doc.coreboot.org/. Contributions welcome!

Specification

The machine has:

- Chipset: Intel QM77
- GPU's: Intel Integrated HD Graphics
       : Discrete NVIDIA NVS 5400M (1 GB VRAM) with Optimus Technology

and pci configuration of:

-[0000:00]-+-00.0  8086:0154
           +-02.0  8086:0166
           +-16.0  8086:1e3a
           +-19.0  8086:1502
           +-1a.0  8086:1e2d
           +-1b.0  8086:1e20
           +-1c.0-[02]----00.0  1180:e823
           +-1c.1-[03]----00.0  8086:4238
           +-1c.2-[04-0b]--
           +-1d.0  8086:1e26
           +-1f.0  8086:1e55
           +-1f.2  8086:1e03
           \-1f.3  8086:1e22

Status

Device/functionality	Status	Comments
CPU
CPU works	OK
L1 cache enabled	OK	Always on
L2 cache enabled	OK	Always on
L3 cache enabled	N/A
Multiple CPU support	N/A
Multi-core support	OK
Hardware virtualization	OK
RAM
EDO	N/A
SDRAM	N/A
SO-DIMM	N/A
DDR	N/A
DDR2	N/A
DDR3	OK	Native
Dual channel support	N/A
ECC support	?
On-board Hardware
On-board IDE 3.5"	N/A
On-board IDE 2.5"	N/A
On-board SATA	OK
On-board SCSI	N/A
On-board USB	OK
On-board VGA	OK	BIOS/console: works.
On-board Ethernet	OK
On-board Audio	OK	Basic two channel audio works fine.
On-board Modem	N/A
On-board FireWire	N/A
On-board Smartcard reader	N/A
On-board CompactFlash	N/A
On-board PCMCIA	N/A
On-board Wifi	N/A
On-board Bluetooth	N/A
On-board SD card reader	N/A
Add-on slots/cards
ISA add-on cards	N/A
Audio/Modem-Riser (AMR/CNR) cards	N/A
PCI add-on cards	OK
Mini-PCI add-on cards	N/A
Mini-PCI-Express add-on cards	Unknown
PCI-X add-on cards	N/A
AGP graphics cards	N/A
PCI Express x1 add-on cards	OK
PCI Express x2 add-on cards	N/A
PCI Express x4 add-on cards	N/A
PCI Express x8 add-on cards	N/A
PCI Express x16 add-on cards	N/A
PCI Express x32 add-on cards	N/A
HTX add-on cards	N/A
Legacy / Super I/O
Floppy	N/A
Serial port 1 (COM1)	N/A
Serial port 2 (COM2)	N/A
Parallel port	N/A
PS/2 keyboard	OK
PS/2 mouse	OK
Game port	N/A
Infrared	Untested
PC speaker	OK
DiskOnChip	N/A
Input
Trackpoint	N/A
Touchpad	N/A
Fn Hotkeys	N/A
Fingerprint Reader	N/A
Laptop
Docking VGA	N/A
Docking LAN	N/A
Docking USB	N/A
Docking Audio	N/A
Docking Displayport	N/A
Thinklight	N/A
Webcam	N/A
Miscellaneous
Sensors / fan control	OK
Hardware watchdog	Pending	What needs to be done here??
SMBus	OK
CAN bus	N/A
CPU frequency scaling	OK
Other powersaving features	N/A
ACPI	WIP	Mostly working, needs a good Review!
Reboot	OK
Poweroff	OK
Suspend	OK
Nonstandard LEDs	N/A
High precision event timers (HPET)	OK
Random number generator (RNG)	OK
Wake on modem ring	N/A
Wake on LAN	Untested
Wake on keyboard	Untested
Wake on mouse	Untested
TPM	Unknown
Flashrom	OK	MXIC MX25L3206E 4MB SPI Flash

Proprietary components status

• CPU Microcode (optional)
• ME(Management Engine) => you do not have to touch it (just leave it where it is)
• EC(Embedded Controller) => you do not have to touch it (just leave it where it is)

GPIO layout

This information should not be considered reliable in any way, shape or form

• GPIO57 - OUT - controls..

General Purpose Events layout

• GPE? - EC SCI
• GPE? - EC SMI

Flashing

Location of the SPI chips

T530 has 2 flash chips of 8M and 4M. They're concatenated to one virtual flash chip of 12M which is itself subdivided in roughly in 4 parts:

• Descriptor (12K)
• ME firmware (5M-12K)
• System flash (7M)

ME firmware is not readable. Vendor firmware locks the flash and so you need to flash externally (unless until someone figures out a way around it).

Proceeds as follows:

• Turn off your laptop, remove battery and AC adapter.
• Remove the keyboard.
• Connect your external SPI flasher to the top SPI chip which is under palm resting space, on left side of the board. It's a 4M chip. IF you've chosen CBFS_SIZE 4M or smaller that's the only chip you need to reflash.

I recommend using SOIC clip. Depending on the flasher you use, you may have to use separate 3.3V source. Make sure not to feed more than 3.3V ot the chip. I used buspirate as flasher and 3.3V power lines from another computer.

• Read the flash. Twice. Compare the files to be sure. Save a copy of it on

external media.

flashrom -p <yourprogrammer> -r flash.bin
flashrom -p <yourprogrammer> -r flash2.bin
diff flash.bin flash2.bin

If they don't match, do not proceed. If the file is 8M, you're flashing wrong chip, connect to the right one.

• Write the flash. Since you have to write only top 4M, first split out those 4M:

 dd of=top.rom bs=1M if=build/coreboot.rom skip=8

• Use flashrom to flash top.rom.

If you have trouble reading the chip successfully, the most common problems are

• insufficient power supply
• bad contacts
• too long wires
• bad pinout

The cable shipped with buspirate was too long, and needed to be trimmed.

See also In-System Programming