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diff --git a/Documentation/mainboard/dell/latitude_e7240.md b/Documentation/mainboard/dell/latitude_e7240.md new file mode 100644 index 0000000000..2d2c48ae6d --- /dev/null +++ b/Documentation/mainboard/dell/latitude_e7240.md @@ -0,0 +1,79 @@ +# Dell Latitude E7240 + +This page is about the notebook [Dell Latitude E7240]. + +## Release status + +Dell Latitude E7240 was released in 2013 and is now end of life. +It can be bought from a secondhand market like Taobao or eBay. + +## Required proprietary blobs + +The following blobs are required to operate the hardware: +1. mrc.bin +2. Intel ME firmware + +Memory reference code in mrc.bin is used to initialize the Haswell platform. +You need this blob to build a working coreboot image. Please read +[mrc.bin](../../northbridge/intel/haswell/mrc.bin) for instructions on +retrieving and using it. + +Intel ME firmware is in the flash chip. It is not needed when building coreboot. +It can be extracted from the OEM firmware. You can also flash only the BIOS +region to leave Intel ME firmware untouched. + +## Programming + +To flash with a programmer, you need to remove the battery and the base cover. + +For more details have a look at the general [flashing tutorial]. + +It is also possible to flash internally with flashrom when the IFD is unlocked. + +## Debugging + +The board can be debugged with EHCI debug. The EHCI debug port is next to the miniDP port. + +There's a serial port on dock, but it's not supported yet in coreboot. + +Schematic of this laptop can be found on [Lab One]. The board name is Compal LA-9431P. + +## Test status + +### Not working + +- EC ACPI +- Touchpad and the buttons on it +- SD/MMC card reader (kernel reports "Timeout waiting for hardware cmd interrupt.") +- No internal display before booting to OS when connected with a dock + +### Working + +- Integrated graphics init with libgfxinit +- mSATA +- WLAN +- USB +- Keyboard +- Dock: all USB ports, DisplayPort, eSATA +- Internal flashing when IFD is unlocked + + +## Technology + +```eval_rst ++------------------+-----------------------------+ +| CPU | Intel Haswell-ULT | ++------------------+-----------------------------+ +| PCH | Intel Lynx Point Low Power | ++------------------+-----------------------------+ +| EC | SMSC MEC5075 | ++------------------+-----------------------------+ +| Super I/O | SMSC ECE5048 | ++------------------+-----------------------------+ +| Coprocessor | Intel Management Engine | ++------------------+-----------------------------+ +``` + +[Dell Latitude E7240]: https://www.dell.com/support/home/en-us/product-support/product/latitude-e7240-ultrabook/docs +[flashing tutorial]: ../../flash_tutorial/ext_power.md +[Lab One]: https://www.laboneinside.com/dell-latitude-e7240-schematic-diagram/ |