Interesting changes since the last automatic update:
* Enable network install
* Enable over-clocking frequencies > 3GHz
See: ttps://github.com/raspberrypi/firmware/issues/1876
* Adjust SDRAM refresh rate according to temperature and address a performance
gap between 4GB and 8GB parts in benchmarks.
See: https://github.com/raspberrypi/firmware/issues/1854
* Support custom CA certs with HTTPS boot
* Move non Kernel ARM stages back to 512KB
https://github.com/raspberrypi/firmware/issues/1868
* Assorted HAT+ and NVMe interop improvements.
* Fix TRYBOOT if secure-boot is enabled.
* Preliminary support for D0 and CM5.
Add NVMe into the SD/USB/DEFAULT boot modes with a higher
priority than USB. The detection of NVMe HATs is quick so
there is no disadvantage in trying NVMe first.
BCM2711 and BCM2712 require different EEPROM firmware and
consequently the binaries have been moved to chip specific
firmware directories.
firmware-2711 / firmware-2712
Previously, the .sig would have an update timestamp of zero. Switching
to rpi-eeprom-digest is preferable because the update timestamp will
be much closer to when the image was installed.
N.B. Update-timestamp is used to track configuration changes and is
independent of the build-timestamps which are the version of the
bootloader executable.
Interesting changes since the last default release:-
* Display VC_BUILD_ID strings instead of the SHA256 hash
* Add support for [cm4] and [pi400] config conditionals filters.
* Change network boot to use the same "RXID" Ethernet PHY configuration as the 5.10 kernel
* TFTP - reply to duplicate ACKS
* Skip rendering of HDMI diagnostics display for the first 8 seconds unless an error occurs.
* UDP checksum fixes
* Add support for the BCM2711 XHCI controller - BOOT_ORDER 0x5
* XHCI protocol layer fixes for non-VLI controllers
* Avoid USB MSD timeout of there is only one device
* Implement tryboot for OS upgrade fallback
* Check the update-timestamp before applying an update in SELF-UPDATE mode
* Update recovery.bin to 2021-04-13 release for error pattern fix
on SDRAM failure.
Create an EEPROM update zip files for use with the Raspberry Pi Imager.
The Raspberry Pi Imager JSON will soon be updated to support the 3
different boot priority choices offered by raspi-config.
