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diff --git a/Documentation/mainboard/hp/folio_9480m.md b/Documentation/mainboard/hp/folio_9480m.md new file mode 100644 index 000000000000..20eed08a66f3 --- /dev/null +++ b/Documentation/mainboard/hp/folio_9480m.md @@ -0,0 +1,156 @@ +# HP EliteBook Folio 9480m + +This page is about the notebook [HP EliteBook Folio 9480m]. + +## Release status + +HP EliteBook Folio 9480m was released in 2014 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. EC firmware +2. Intel ME firmware +3. mrc.bin + +HP EliteBook Folio 9480m uses SMSC MEC1322 as its embedded controller. +The EC firmware is stored in the flash chip, but we don't need to touch it +or use it in the coreboot build process. + +Intel ME firmware is in the flash chip. It is not needed when building coreboot. + +The Haswell memory reference code binary is needed when building coreboot. +Please see [mrc.bin](../../northbridge/intel/haswell/mrc.bin). + +## Programming + +Before flashing, remove the battery and the hard drive cover according to the +[Maintenance and Service Guide] of this laptop. + + + +HP EliteBook Folio 9480m has two flash chips, a 16MiB system flash, and a 2MiB +private flash. To install coreboot, we need to program both flash chips. +Read [HP Sure Start] for detailed information. + +To access the system flash, we need to connect the AC adapter to the machine, +then clip on the flash chip with an SOIC-8 clip. An [STM32-based flash programmer] +made with an STM32 development board is tested to work. + +To access the private flash chip, we can use a ch341a based flash programmer and +flash the chip with the AC adapter disconnected. + +Before flashing coreboot, we need to do the following: + +1. Erase the private flash to disable the IFD protection +2. Modify the IFD to shrink the BIOS region, so that we'll not use or override + the protected bootblock and PEI region, as well as the EC firmware + +To erase the private flash chip, attach it with the flash programmer via the SOIC-8 clip, +then run: + + flashrom -p <programmer> --erase + +To modify the IFD, we need a new flash layout. The flash layout of the OEM firmware is: + + 00000000:00000fff fd + 00001000:00002fff gbe + 00003000:005fffff me + 00600000:00ffffff bios + +The default coreboot configuration sets the flash chip size to 12MiB, so set the end of the +BIOS region to 0xbfffff in the new layout. The modified IFD is as follows (Platform Data +region pd is the region protected by HP Sure Start): + + 00000000:00000fff fd + 00001000:00002fff gbe + 00003000:005fffff me + 00600000:00bfffff bios + 00eb5000:00ffffff pd + +Write the above layout in a file, and use ifdtool to modify the IFD of a flash image. +Suppose the above layout file is ``layout.txt`` and the origin content of the system flash +is in ``factory-sys.rom``, run: + + ifdtool -n layout.txt factory-sys.rom + +Then a flash image with a new IFD will be in ``factory-sys.rom.new``. + +Flash the IFD of the system flash: + + flashrom -p <programmer> --ifd -i fd -w factory-sys.rom.new + +Then flash the coreboot image: + + # first extend the 12M coreboot.rom to 16M + fallocate -l 16M build/coreboot.rom + flashrom -p <programmer> --ifd -i bios -w build/coreboot.rom + +After coreboot is installed, the coreboot firmware can be updated with internal flashing: + + flashrom -p internal --ifd -i bios --noverify-all -w build/coreboot.rom + +## Debugging + +The board can be debugged with EHCI debug. The EHCI debug port is the USB port on the left. + +## Test status + +### Known issues + +- GRUB payload freezes just like previous EliteBook laptops +- Sometimes the PCIe WLAN module can not be found in the OS after booting to the system +- Sometimes all the USB devices can not be found in the OS after S3 resume + +### Untested + +- Fingerprint reader +- Smart Card reader + +### Working + +- i5-4310U CPU with 4G+4G memory +- SATA and M.2 SATA disk +- Ethernet +- WLAN +- WWAN +- SD card reader +- USB +- Keyboard and touchpad +- DisplayPort +- VGA +- Dock +- Audio output from speaker and headphone jack +- Webcam +- TPM +- EC ACPI +- S3 resume +- Arch Linux with Linux 5.8.9 +- Memory initialization with mrc.bin version 1.6.1 Build 2 +- Graphics initialization with libgfxinit +- Payload: SeaBIOS, Tianocore +- EC firmware + - KBC Revision 92.15 from OEM firmware version 01.33 + - KBC Revision 92.17 from OEM firmware version 01.50 +- Internal flashing under coreboot + +## Technology + +```eval_rst ++------------------+-----------------------------+ +| CPU | Intel Haswell-ULT | ++------------------+-----------------------------+ +| PCH | Intel Lynx Point Low Power | ++------------------+-----------------------------+ +| EC | SMSC MEC1322 | ++------------------+-----------------------------+ +| Coprocessor | Intel Management Engine | ++------------------+-----------------------------+ +``` + +[HP EliteBook Folio 9480m]: https://support.hp.com/us-en/product/hp-elitebook-folio-9480m-notebook-pc/7089926 +[Maintenance and Service Guide]: http://h10032.www1.hp.com/ctg/Manual/c05228980 +[STM32-based flash programmer]: https://github.com/dword1511/stm32-vserprog +[HP Sure Start]: hp_sure_start.md |