Change in coreboot[master]: mb/dell: Add Dell Optiplex 790

[Christoph Pomaska (Code Review)]

Hello Kyösti Mälkki, Patrick Rudolph, Felix Held, Mimoja, Angel Pons, Arthur Heymans, Paul Menzel, Jonathan Neuschäfer, build bot (Jenkins), Patrick Georgi, Martin Roth,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/21774

to look at the new patch set (#65).

Change subject: mb/dell: Add Dell Optiplex 790
......................................................................

mb/dell: Add Dell Optiplex 790

This port was generated using autoport.

The Optiplex 790 comes in four different sizes: MT, DT, SFF and USFF.
The mainboard PCBs for MT and DT are identical, the only difference is
that MT has an extra SATA port. The other PCBs are slightly different,
but they are designed with intercompatibility in mind.

Therefore, the four mainboard configurations are:

- MT:   4 RAM slots, 4x SATA, PEG, PCIe x1, PCI, PCIe x16
 - DT:	 4 RAM slots, 3x SATA, PEG, PCIe x1, PCI, PCIe x16
 - SFF:  4 RAM slots, 3x SATA, PEG, PCIe x16
 - USFF: 2 RAM slots, 2x SATA, mPCIe

This port has been tested with: SFF (needs retest) , USFF

What works:
 - Booting Arch Linux with kernel 5.2.3-arch1-1-ARCH
 - PCIe (Hotplug on PCIe X1 only!)
 - Onboard graphics with libgfxinit (via VGA)
 - Hard drive activity LED
 - Onboard sound
 - Onboard Ethernet
 - SATA (hotplug)
 - IOMMU
 - Turning on and off (S5)
 - Suspend/resume (S3)
 - EHCI debug (rear side, bottom port on the block with ethernet)

What does not work:
 - SuperI/O (Chip is a SCH5544-NS)
    - Serial port
    - PS/2
    - Fan control (fans run at full speed)
    - Front LEDs (signals code 234, corrupted or defective BIOS) [1]

- VBT is missing

Untested:
 - DisplayPort?
 - VGA BIOS?

Further notes:
 - Default IFD settings block reads/writes to some regions. This can be
   bypassed by plugging the SERVICE_MODE jumper. BIOS version A05 does
   not set any protected ranges, so internal flashing is possible (use a
   layout if the SERVICE_MODE jumper is not plugged).
 - The mainboard has two flash chips: SOIC16 8 MiB and SOIC8 2 MiB. They
   are recognized as one "Opaque flash chip" of 10 MiB in size.

[1] http://www.dell.com/support/article/us/en/04/sln284978/a-reference-guide-to-...

Change-Id: If3d3a13163d5da1368259a7498019d42fb3ed57f
Signed-off-by: Christoph Pomaska 
Signed-off-by: Angel Pons 
---
A Documentation/mainboard/dell/optiplex_790.md
A Documentation/mainboard/dell/servicemode.md
M Documentation/mainboard/index.md
A src/mainboard/dell/Kconfig
A src/mainboard/dell/Kconfig.name
A src/mainboard/dell/optiplex_790/Kconfig
A src/mainboard/dell/optiplex_790/Kconfig.name
A src/mainboard/dell/optiplex_790/Makefile.inc
A src/mainboard/dell/optiplex_790/acpi/ec.asl
A src/mainboard/dell/optiplex_790/acpi/platform.asl
A src/mainboard/dell/optiplex_790/acpi/superio.asl
A src/mainboard/dell/optiplex_790/acpi_tables.c
A src/mainboard/dell/optiplex_790/board_info.txt
A src/mainboard/dell/optiplex_790/devicetree.cb
A src/mainboard/dell/optiplex_790/dsdt.asl
A src/mainboard/dell/optiplex_790/early_init.c
A src/mainboard/dell/optiplex_790/gma-mainboard.ads
A src/mainboard/dell/optiplex_790/gpio.c
A src/mainboard/dell/optiplex_790/hda_verb.c
A src/mainboard/dell/optiplex_790/mainboard.c
A src/mainboard/dell/optiplex_790/variants/mt_dt/overridetree.cb
A src/mainboard/dell/optiplex_790/variants/sff/overridetree.cb
A src/mainboard/dell/optiplex_790/variants/usff/overridetree.cb
23 files changed, 832 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/74/21774/65