Board:hp/2760p

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Revision as of 08:36, 20 July 2017 by IruCai (talk | contribs) (how to extract the EC firmware blob)
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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!

Thanks for your interest in HP Elitebook 2760p port. This port is a work in progress.

Status

Intel_Native_Raminit has it's own status page.

Tested and working:

  • S3 (Suspend to RAM)
  • RAM module combinations of 0+8G, 4G+8G
  • USB
  • Video (internal)
  • WLAN
  • Linux (through SeaBIOS as payload)
  • Keyboard, trackpoint, touchpad
  • Fan control
  • Expresscard
  • AC and battery status

Not working:

  • GRUB payload will freeze
  • digitizer

Not tested:

  • VGA
  • Sound (integrated speakers, integrated mic, external headphones, external mic)
  • LAN
  • WWAN
  • SD card slot
  • Fingerprint reader
  • Webcam
  • Thermal management
  • bluetooth
  • dock
  • msata
  • fn hotkeys

proprietary components status

  • CPU Microcode
  • VGA Option ROM (optional)
  • ME (Management Engine) firmware
  • EC (Embedded Controller): The EC in this laptop is SMSC KBC1126. It needs two blobs in the flash chip.

Building

The source code is at https://review.coreboot.org/#/c/18241/. You can check it out and rebase it on the master branch.

First, you need to extract the blobs needed by EC firmware using util/kbc1126. You can extract them from your backup firmware image, or firmware update provided by HP as follows:

 wget https://ftp.hp.com/pub/softpaq/sp79501-80000/sp79710.exe
 unar sp79710.exe
 ${COREBOOT_DIR}/util/kbc1126/kbc1126_ec_dump sp79710/Rompaq/68SOU.BIN
 mv 68SOU.BIN.fw1 ${COREBOOT_DIR}/2760p-fw1.bin
 mv 68SOU.BIN.fw2 ${COREBOOT_DIR}/2760p-fw2.bin

When you config coreboot, select:

 Chipset --->
   [*] Add firmware images for KBC1126 EC
       (2760p-fw1.bin) KBC1126 firmware #1 path and filename
       (2760p-fw2.bin) KBC1126 filename #2 path and filename

Then just make your firmware.

Flashing

The flash chip of this laptop is socketed beside the WLAN slot. You can flash the firmware to another chip and replace it. The original flash chip is MX25L6445E.

You can also do an internal flashing with flashrom after you have coreboot installed and IFD unlocked.