Issue #581 has been updated by Keith Hui.

Walter Sonius wrote in #note-14:
> This will really finish it ;-)
> 
> 4th Black SATA port Fixed by using portmap "0x3f" hinted from 
> "z220_cmt_workstation" instead of "0xf". Portmap "0x10" only made the 4th 
> black port working and broke all three others...

Great news! Patch has been updated with 0x3f (see below).

Paul Menzel wrote in #note-15:
> First, thank you for your thorough testing.
> 
> What about `0x1f`, which would be `0001 1111` (binary)? This would still 
> hint, that there are five and not five ports. You could test the other 
> iterations, and check if all other three ports keep working.

This is the "ports implemented" map, and 0x3f enables all 6 SATA ports 7-series 
PCHs could ever have. Boards are supposed to zero the bits for ports that 
aren't actually on the board, but based on what Walter said, one of the ports 
between ports 0-3 is also not implemented - this board only has 4 SATA ports. 
To get at the correct value all six bits (ie. 0x01-0x20) will need to be tested 
to find out which port is which - and we now know port 4 (or the fifth) is 
black, port 0 is blue (for it supports 6Gbps and with its Q75 PCH it must be 
port 0) and port 5 is not implemented because that bit being 0 didn't break any 
physical port. But I'll wait for Walter's report before finalizing this value.

Walter Sonius wrote in #note-13:
> The Wake On Lan feature is working perfectly with S3 suspend to RAM both on 
> SeaBIOS and EDK2(mcb 2408) it doesn't need to disable false wake events 
> mentioned earlier for the previous 8300_elite_sff based attempt. Wak On Lan 
> even works now on (warm) boots (system shutdown before) not sure if that is 
> called S5 or some special S4 mode(did not hibernate) but it just consumes 
> around ~0-1 Watt!
> Suspend to ram S3, can also be woken from USB keyboard (not mouse) and 
> offcourse Power Button.
> The Power LED also blinks in Suspend compared to continues on in normal 
> operating mode.
> The only thing blocking S3 suspend to RAM as in instantly waking after sleep 
> is having a PS2 keyboard connected!

Sweet. These can be left for later, and WOL actually works.

> 
> All testing has been done with a non updated but active and normal 
> functioning ME/TXE firmware version 8.1.31.1351 (generation 2) from the OEM 
> firmware, see earlier coreboot logs and new log with ME disabled!
> 
> Just tried corna me_cleaner with option -S on the current running whole 
> firmware file, reflashed and cold(first) boot seems a little bit slower with 
> first a instant powerdown after poweron but than it continues itself powering 
> on and booting. The operating systems just complaines about "mei_me" issues 
> but that is expected and when waking from suspend the system notices that the 
> mei pci device is not there. I'm aware that also during coreboot build there 
> is an option to do the ME neutering, but since that is not default it may not 
> be needed to test?

There is a config option to hide the ME if it fails. Turn it on if you neuter 
ME and all should be well.

> 
> For ECC RAM I will fill a separate bug if this pro_6300_sff/mt variant is 
> officially merged.
> 

All manuals only mention non-ECC memory, and knowing that with an i3 CPU you 
won't get ECC, and I have a feeling the ECC lines may not even be wired. I am 
95% confident ECC is not supported on this model at all.

> Still would recommend a note in the "compaq_pro_6300_series.md" about using 
> flashrom while on coreboot firmware, both needed for -r read and -w write. 
> Will continue that as a seperate issue in the flashrom tracker soon, but 
> coreboot/flashrom new enthusiasts might panic if they cannot reflash again 
> with simple syntax so this is the fix:
> flashrom -p internal:boardmismatch=force,ich_spi_mode=hwseq -w test.rom -c 
> "Opaque flash chip"

At this point coreboot is by geeks for geeks, although more layman-friendly 
documentation is always a good thing.

> Thanks Keith, Martin and the Mr Jenkins ;-) for completing this pull request, 
> you earn all the credits to the code and don't need to mention me.

Mr. Jenkins is a QC bot. ;-)


----------------------------------------
Support #581: success new variant "compaq_pro_6300_sff" for hp/snb_ivb_desktops 
compatible with "compaq_8300_elite_sff" template
https://ticket.coreboot.org/issues/581#change-2016

* Author: Walter Sonius
* Status: New
* Priority: Normal
* Category: board support
* Target version: none
* Start date: 2025-03-15
----------------------------------------
Successful flash and coreboot SeaBIOS functioning of a HP "compaq_pro_6300_sff" 
with a unchanged "compaq_8300_elite_sff" template using coreboot 
(24.12-758-g1e7ba810c6bb) and SeaBIOS (version rel-1.16.3-0-ga6ed6b70).

These two HP Compaq devices are extremely similar, they use the same OEM 
proprietary BIOS upgrade files. Hardware wise the only 3 noticeable differences 
are that the "compaq_8300_elite_sff" comes with a Q77 chipset, SuperIO NPCD378 
and J32 labeled 16x length "white" PCI-E slot versus a Q75 chipset, SuperIO 
NPCD379HAKFX with the J32 labeled slot populated with a limited physical 1x 
length "black" PCI-E slot on the "compaq_pro_6300_sff".

Flashing from OEM proprietary BIOS 3.08revA enabling the FDO jumper on the 
motherboard as described for the compaq_8300_elite_sff works by booting with 
"iomem=relaxed" kernel parameter and specifying the specific 16MB chip 25Q128A: 
flashrom -p internal -w cbtest.rom -c "MT25QL128"

Tested and Working:
Poweron/Poweroff/Reboot
CPU i3-3220 / e3-1225v2
RAM 1x 2x 4x populated slots total of 4GB/8GB/16GB/24GB (both 1.35v and 1.5v 
modules mixed with ECC)
Serial port (including coreboot)
PS2 keyboard (including SeaBIOS)
PS2 mouse
SATA 3 ports (blue/white/white)
USB 2.0 4x front & 2x back ports
USB 3.0 4x back ports
Ethernet 1Gbit/100Mbit
Display port works in SeaBIOS and OS
VGA port only works in OS!
PCI using realtek RTL8169 1Gb
PCIE 3.0 16x using 2.0 8x 10Gb intel X540-AT2 / using 1.0 16x Nvidia Geforce 
6200 LE (also works in SeaBIOS)
PCIE 2.0 1x using 2.0 1x 2.5Gb realtek RTL8125
PCIE 2.0 1x using 1.0 1x 1Gb intel 82574L (SeaBIOS loads option rom)
Audio built-in speaker (plays music in OS compared to legacy bleep pc-speaker)
Audio front panel 3.5 mm headphone jack (auto disables built-in Speakers and 
selects Headphones)
Audio front panel 3.5 mm headphone&mic jack (only microphone works with 4 pin 
3.5mm combi mic/headphone)
Audio back panel 3.5mm green jack (manually select Line Out and it works)
Sensors CPU and 2 motherboard sensors
SuperIO
Booting USB / SATA(HDD/DVD)
OS: Fedora-mate Linux kernel 6.11.4 / 6.13.6, KDE neon Linux kernel 6.8.0-52
Flashrom: needs additional parameters compared to OEM BIOS both for read/write 
depending on flashrom version?

flashrom -p internal:boardmismatch=force,ich_spi_mode=hwseq -w test.rom -c 
"Opague flash chip"

Tested not Working:
RAM ECC functioning (see coreboot log)
SATA port black
Wakeonlan, it just auto wakes from itself so cannot verify...
iGPU multigpu with PCIE nvidia geforce 6200 le, only PCIE nvidia geforce works 
and iGPU gets disabled.

What to do next to get this "compaq_pro_6300_sff" variant officially supported?

*Supply more logs/info?
*Fill a bug for the ECC not working or first get this variant supported as is?
*Fill a bug that VGA doesn't work in SeaBIOS?
*Fill a bug/ticket on the flashrom support list for the difference in 
parameters needed pre/post flash?

https://support.hp.com/us-en/drivers/hp-compaq-pro-6300-small-form-factor-pc/model/5232884
https://support.hp.com/in-en/drivers/hp-compaq-elite-8300-small-form-factor-pc/model/5232855

Walter Sonius


---Files--------------------------------
cb-log-hp-compaq_pro_6300_sff.txt (51.8 KB)
hp-compaq-pro-6300-oem-and-coreboot-autoport.zip (266 KB)
cb-pull97add0a-log-ed2k-hp-compaq_pro_6300_sff-mt-deselect-vga-vga-working.txt 
(47.7 KB)
cb-pull97add0a-log-ed2k-hp-compaq_pro_6300_sff-mt-deselect-vga-dp-hdmi-working.txt
 (47.8 KB)
cb-pull97add0a-log-sb-hp-compaq_pro_6300_sff-mt.txt (54.6 KB)
cb-pull264053a-log-ed2k-mcb2408-hp-compaq_pro_6300_sff-mt-me-S.txt (46.1 KB)


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