Merge ~xnox/ubuntu-core-initramfs:less-modules into ~canonical-foundations/ubuntu-core-initramfs:master

[Dimitri John Ledkov]

Ship less modules in the initrd.

RPi ideally should boot without any modules at all.

But currently we include too many, without matching firmware.

When we do that, module loads, fails to find matching firmware, and continuous to runtime without giving PiFi.

However, we have two ways to fix this
- ship more firmware in the initrd
- ship less modules in the initrd

Either of that will achieve to have "both firmware and modules at the same time". This implements "ship less modules in the initrd", as rpi kernel is built to boot without modules.

Initrd with this change was built at https://people.canonical.com/~xnox/uc20/ubuntu-core-initramfs.img-5.4.0-1011-raspi and offered for testing.

[Ian Johnson (anonymouse67)]

I tested this change on a Raspberry Pi 4 in arm64 and it auto-loaded the wlan module correctly such that networking could be hypothetically configured via wlan from console-conf if it wasn't currently crashing.

+1 from me on pi on arm64.

[Dimitri John Ledkov (xnox)]

Rebuild pc gadget & pc kernel, signed with snakeoil keys.

I was able to boot, install, reboot, consoleconf, runmode, reboot, runmode.

I did that with UEFI no secureboot, UEFI with secureboot, UEFI with secureboot + TPM + FDE. All three cases worked.

review: Approve

diff --git a/debian/changelog b/debian/changelog
index b5d75ee..8017d7b 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,4 +1,4 @@
-ubuntu-core-initramfs (35) focal; urgency=medium
+ubuntu-core-initramfs (36) focal; urgency=medium
 
   * Initial Release.
 
diff --git a/factory/usr/lib/modules-load.d/ubuntu-core-initramfs.conf b/factory/usr/lib/modules-load.d/ubuntu-core-initramfs.conf
index 5e3d795..143f3c6 100644
--- a/factory/usr/lib/modules-load.d/ubuntu-core-initramfs.conf
+++ b/factory/usr/lib/modules-load.d/ubuntu-core-initramfs.conf
@@ -34,70 +34,4 @@ sdhci-iproc
 fixed
 gpio-regulator
 genet
-bcm7xxx
-mdio-bcm-unimac
-## arm64 Pi modules loaded
-nls_ascii
-dm_multipath
-scsi_dh_rdac
-scsi_dh_emc
-scsi_dh_alua
-btsdio
-bluetooth
-ecdh_generic
-ecc
-input_leds
-brcmfmac
-brcmutil
-cfg80211
-bcm2835_v4l2
-bcm2835_mmal_vchiq
-videobuf2_vmalloc
-videobuf2_memops
-videobuf2_v4l2
-videobuf2_common
-raspberrypi_hwmon
-videodev
-mc
-vc_sm_cma
-rpivid_mem
-uio_pdrv_genirq
-uio
-sch_fq_codel
-drm
-ip_tables
-x_tables
-autofs4
-btrfs
-zstd_compress
-raid10
-raid456
-async_raid6_recov
-async_memcpy
-async_pq
-async_xor
-async_tx
-xor
-xor_neon
-raid6_pq
-libcrc32c
-raid1
-raid0
-multipath
-linear
-broadcom
-bcm_phy_lib
-mdio_bcm_unimac
-genet
-spidev
-sdhci_iproc
-crct10dif_ce
-gpio_regulator
-hid_generic
-phy_generic
-fixed
-usbhid
-aes_neon_bs
-aes_neon_blk
-crypto_simd
-cryptd
+