On May 4, 2019 at 11:47 PM, Wayne Blaszczyk <[email protected]> wrote:
On Sun, 2019-05-05 at 01:50 +0000, Hans Malissa via blfs-support wrote:
On May 4, 2019 at 1:03 PM, Ken Moffat via blfs-support
<[email protected]> wrote:
On Sat, May 04, 2019 at 05:08:25AM +0000, Hans Malissa via blfs-support wrote:
Hello!Did you build it into the kernel? I've noticed that I have to build my
firmware into the kernel, or otherwise it fails to load at runtime.
Yes (CONFIG_DRM_I915=y; I believe that is the correct kernel setting).Greetings,
Hans
To build it in, you need to edit the kernel config (menuconfig is
fine, but check the resultsby looking at .config afterwards : if you
start from nothing, it can sometimes end up a bit strange.
For an old radeon with only 3 items of firmware, I have in the
.config
#
# Firmware loader
#
CONFIG_FW_LOADER=y
CONFIG_EXTRA_FIRMWARE="radeon/R600_rlc.bin radeon/RS780_pfp.bin
radeon/RS780_me.bin"
CONFIG_EXTRA_FIRMWARE_DIR="/lib/firmware"
# CONFIG_FW_LOADER_USER_HELPER is not set
i.e.:
enable the loader
provide a space-separated list of subdirectory/blob items
tell it all firmware is in /lib/firmware
HTH
Thanks a lot! Okay, that does make a difference.
I've added the file in question to CONFIG_EXTRA_FIRMWARE, it is now:
CONFIG_EXTRA_FIRMWARE="i915/glk_dmc_ver1_04.bin"
After compiling the kernel and booting, I get:
# dmesg | grep firware
[...] [drm] GuC: No firmware known for this platform!
[...] [drm] HuC: No firmware known for this platform!
[...] [drm] Finished loading DMC firmware i915/glk_dmc_ver1_04.bin (v1.4)
...
So that seems to be working to some degree. Not sure what to do about the first
two lines.
Greetings,
Hans
You might want to try setting CONFIG_DRM_I915=m rather than y. This is what I
have done.
I don't have CONFIG_EXTRA_FIRMWARE set, and all 3 blobs are picked up for me.
I also have the following file:
/etc/modprobe.d/i915.conf
with the following content:
options i915 enable_guc=3
Okay, I've tried this too. When I compile the kernel with CONFIG_DRM_I915=m, and add
"options i915 enable_guc=3" to /etc/modprobe.d/i915.conf, linux hangs during
startup with the following output:
...
[...] Setting dangerous option enable_guc - tainting kernel
[...] [drm] GuC: No firmware known for this platform!
[...] [drm] HuC: No firmware known for this platform!
[...] [drm] Incompatible option detected: enable_guc=3, no GuC firmware!
[...] [drm] Incompatible option detected: enable_guc=3, no HuC firmware!
[...] fb0: switching to inteldrmfb from EFI
And then the system is stuck.
Otherwise, the only change from CONFIG_DRM_I915=y to CONFIG_DRM=m is that the
firmware blob i915/glk_dmc_ver1_04.bin is being loaded automatically from
/lib/firmware, and doesn't have to be explicitly added to
CONFIG_EXTRA_FIRMWARE, otherwise the system behaves the same.
I'm guessing that my hardware doesn't support GuC/HuC. There must be
documentation about that somewhere, where can I look up whether my video
controller supports GuC/HuC?
Thanks a lot,
Hans
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