Can't load i915kms

Hi! I have a problem with loading the GPU driver into the kernel after upgrading from 14-ALPHA2. Steps I made to upgrade my system:
$ rm -rf /usr/src
$ git clone -b stable/14 https://git.freebsd.org/src.git /usr/src
$ make buildworld kernel
$ reboot
In single user mode:
$ mount -u /
$ zfs mount zroot/usr/src
$ etcupdate -p
($ etcupdate resolve)
$ make installworld
$ etcupdate -B && reboot
I tried to reinstall all my packages (including pkg) and install drm-515-kmod from ports, but nothing changed.
Basic info about the system: https://pastebin.com/g7YRqYBK
/var/log/messages:
Sep 5 14:59:18 bsdlap kernel: drmn0: <drmn> on vgapci0
Sep 5 14:59:18 bsdlap kernel: vgapci0: child drmn0 requested pci_enable_io
Sep 5 14:59:18 bsdlap syslogd: last message repeated 1 times
Sep 5 14:59:18 bsdlap kernel: [drm] Unable to create a private tmpfs mount, hugepage support will be disabled(-19).
Sep 5 14:59:18 bsdlap kernel: [drm] Got stolen memory base 0xcd800000, size 0x2000000
Sep 5 14:59:18 bsdlap kernel: vgapci0: attempting to allocate 1 MSI vectors (1 supported)
Sep 5 14:59:18 bsdlap kernel: msi: routing MSI IRQ 134 to local APIC 0 vector 50
Sep 5 14:59:18 bsdlap kernel: vgapci0: using IRQ 134 for MSI
Sep 5 14:59:18 bsdlap kernel: skl_dmc_ver1_27.bin: could not load firmware image, error 2
Sep 5 14:59:18 bsdlap kernel: i915/skl_dmc_ver1_27.bin: could not load firmware image, error 2
Sep 5 14:59:18 bsdlap kernel: i915/skl_dmc_ver1_27.bin: could not load firmware image, error 2
Sep 5 14:59:18 bsdlap kernel: drmn0: Adding i2c adapter i915 gmbus dpc
Sep 5 14:59:18 bsdlap kernel: lkpi_iic0: <LinuxKPI I2C> on drmn0
Sep 5 14:59:18 bsdlap kernel: iicbus2: <Philips I2C bus> on lkpi_iic0
Sep 5 14:59:18 bsdlap kernel: iic2: <I2C generic I/O> on iicbus2
Sep 5 14:59:18 bsdlap kernel: drmn0: Adding i2c adapter i915 gmbus dpb
Sep 5 14:59:18 bsdlap kernel: lkpi_iic1: <LinuxKPI I2C>
Sep 5 14:59:18 bsdlap kernel: on drmn0Sep 5 14:59:18 bsdlap kernel: iicbus3: <Philips I2C bus> on lkpi_iic1
...
Sep 6 15:55:44 bsdlap kernel: iic0: <I2C generic I/O> on iicbus0
Sep 6 15:55:44 bsdlap kernel: iic1: <I2C generic I/O> on iicbus1
Sep 6 15:55:44 bsdlap kernel: drmn0: <drmn> on vgapci0
Sep 6 15:55:44 bsdlap kernel: vgapci0: child drmn0 requested pci_enable_io
Sep 6 15:55:44 bsdlap syslogd: last message repeated 1 times
Sep 6 15:55:44 bsdlap kernel: [drm] Unable to create a private tmpfs mount, hugepage support will be disabled(-19).Sep 6 15:55:44 bsdlap kernel: [drm] Got stolen memory base 0xcd800000, size 0x2000000

What can be the problem? Thank you!