rpi-eeprom/firmware/release-notes.md

Raspberry Pi4 bootloader EEPROM release notes

2019-09-23 - Git c67e8bb3 (BETA)

• Increase TFTP timeout to 30s as default & bootconf.txt
• Fix intermittent boot freeze/slowdown issue after loading start.elf
• Don't load start.elf during network boot if start4.elf exists but the download times out.

2019-09-23 - Git c67e8bb3 (BETA)

• Add support for network boot
• Configurable ordering for boot modes (BOOT_ORDER and SD/NET_BOOT retries)

2019-09-10 - Git f626c772

• Configure ethernet RGMII pins at power on. This is a minor change which which may improve reliability of ethernet for some users.

2019-09-05 - Git d8189ed4 - (BETA)

• Update SDRAM setup to reduce power consumption.

2019-07-15 - Git 514670a2

• Turn green LED activity off on halt.
• Pad embedded config file with spaces for easier editing by end users.
• Halt now behaves the same as earlier Pi models to improve power behavior at halt for HATs.
• WAKE_ON_GPIO now defaults to 1 in the EEPROM config file.
• POWER_OFF_ON_HALT setting added defaulting to zero. Set this to 1 to restore the behavior where 'sudo halt' powers off all PMIC output.
• If WAKE_ON_GPIO=1 then POWER_OFF_ON_HALT is ignored.
• Load start4db.elf / fixup4db.dat in preference to start_db.elf / fixup_db.dat on Pi4.
• Embed BUILD_TIMESTAMP in the EEPROM image to assist version checking.

2019-05-10 - Git d2402c53 (RC2.1)

• First production version.