Issue #581 has been updated by Keith Hui.
Walter Sonius wrote in #note-32:
Tested ["Add gfx_uma_size options up to 1 GB"](https://review.coreboot.org/c/coreboot/+/87192) on this "pro_6300_sff" and it fixes the earlier "Bad value error ... 0x7".
However I did need to edit the following value `4>5` in `cmos.layout` to get 1024M writable by `nvramtool`:
432 4 e 11 gfx_uma_size 432 5 e 11 gfx_uma_sizeAfter applying `sudo nvramtool -w gfx_uma_size=1024M` and rebooting the `free` RAM still shows the same as with 512M option, all the other values add up from 32MB to 512MB consuming more RAM from ~8GB free to ~7.5GB free and its values in between. Is 1024MB really supported?
Also when adding a discrete GPU, the onboard iGPU gets disabled but the assigned `gfx_uma_size` of RAM is still lost to the iGPU because `free` still shows ~512MB missing / 7.5GB correct?
Further PCIe dGPU testing with the "NVidia GTX640 2GB UEFI" using MR.Chromebox 2502 payload and its new build option [LOAD_OPTION_ROMS](https://github.com/MrChromebox/edk2/pull/33/files) makes the EDK2 work on the dGPU DVI output without the need to add the EFI GOP firmware during buildtime! Removing the dGPU will make the iGPU work again with native EDK2 output, without any GOP/ROM adding or removing to the coreboot/EDK2 payload. Just add `BUILD_STR += -D LOAD_OPTION_ROMS=TRUE` to `payloads/external/edk2/Makefile` before building.
What CPU you have? Sandy Bridge (2nd gen core) only supports up to 512MB shared memory per Intel datasheet.
I have used edk2 payload for the past year. All I need is libgfxinit and the VBT blob extracted from vendor BIOS. edk2 handled the rest.
---------------------------------------- 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-2078
* 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... https://support.hp.com/in-en/drivers/hp-compaq-elite-8300-small-form-factor-...
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) hp-compaq-pro_6300_sff-oem-siot1c11-autoport.zip (174 KB) hp-compaq-8200_elite_sff-usao-oem-siot1c11-autoport.zip (360 KB) hp-compaq-8300_elite_sff-oem-UEFI-siot1c11-autoport.zip (167 KB) hp-compaq-pro_6300_sff-oem-UEFI-siot1c11-autoport-4xsata-5xsata.zip (518 KB) autoport-pro6300-8200elite-sff-vtd-iommu-dmar.zip (506 KB) autoport-pro6300-8200elite-sff-vtd-iommu-dmar-all-pci-sata-pop.zip (531 KB) cb-log-hp-compaq_8200_elite_sff_usao-sata0x17-early-usb.txt (63.9 KB)