Raspberry Pi 4 UEFI Firmware v1.17

• Enable direct USB boot (i.e. you can now boot this firmware straight from USB, without the need for an SD card) [tianocore/edk2-platforms@2254262]
• Enable GPT/MBR ESP support (due to using the latest start4.elf)
• Improve Genet driver [tianocore/edk2-platforms@2242b99]

Note: Booting from USB or from ESP requires a recent-enough version of the Pi EEPROM. If you find that booting from USB or from ESP doesn't work, please visit https://github.com/raspberrypi/rpi-eeprom/releases to update your EEPROM.

Raspberry Pi 4 UEFI Firmware v1.16

• Enable network boot by default on first boot, when all other
  boot options fail [tianocore/edk2-platforms@8dd78ea]
• Regenerate boot options on boot failure [tianocore/edk2@2d233af]
• Update SMBIOS data [tianocore/edk2-platforms/@d2c797e22184028cf3a8f3e75737c75ef917b422, tianocore/edk2-platforms@b2bc859]
• Improve GENET driver [tianocore/edk2-platforms@743f501]
• Fix NonCoherentDmaLib bounce buffering code [tianocore/edk2@8f22a33]

Raspberry Pi 4 UEFI Firmware v1.15

• Remove obsolete Verbose ExitBootServices option [tianocore/edk2-platforms@4c8c886]
• Add asset tag support [tianocore/edk2-platforms@6d4fed6]

Raspberry Pi 4 UEFI Firmware v1.14

• Add UEFI Shell to Boot Manager menu [tianocore/edk2-platforms@1c31eea]
• Add support for 8 GB Raspberry Pi 4 models [tianocore/edk2-platforms@dae68d5, tianocore/edk2-platforms@678f6bf]

Raspberry Pi 4 UEFI Firmware v1.13

• Genet: Fix TFTP and HTTP boot (failed download issues) [tianocore/edk2-platforms@3698b91]

Raspberry Pi 4 UEFI Firmware v1.12

• Add Genet (Gigabit Ethernet) support [tianocore/edk2-platforms@cc2e45a, tianocore/edk2-platforms@8f330ca, tianocore/edk2-platforms@193bc27 and related commits]
• Disable scaled resolutions by default (only leave native enabled) [tianocore/edk2-platforms@bfa32ac]
• Improve Device Tree vs ACPI selection menu [tianocore/edk2-platforms@d492639]

Raspberry Pi 4 UEFI Firmware v1.11

• Update ACPI to version 6.3 [tianocore/edk2-platforms@1118912]
• Drop unneeded Cortex-A53 erratum workaround [tianocore/edk2-platforms@66d1b02]
• Increase mailbox request timeouts [tianocore/edk2-platforms@35a5402]
• Improve Serial Port library [tianocore/edk2-platforms@cd65359 and subsequent commits]
• Disable overscan by default in config.txt (#43)

Raspberry Pi 4 UEFI Firmware v1.10

• Remove internal Device Tree (was unused on the Pi 4 anyway since an external one is needed by start4.elf to initialize the UARTs and other things) [tianocore/edk2-platforms@be2ed5e]
• Fix SPI and UART ACPI devices [tianocore/edk2-platforms@f12e1c0
• Fix PWM ACPI devices [tianocore/edk2-platforms@d45d873]

Raspberry Pi 4 UEFI Firmware v1.9

• Update to TF-A v2.3 [tianocore/edk2-non-osi@96ec764]
• Fix an ASSERT being produced with the DEBUG version [tianocore/edk2-platforms@f09ea1a]

Raspberry Pi 4 UEFI Firmware v1.8

• Switch to common GraphicsConsoleDxe [tianocore/edk2-platforms@4014ed2]