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pieeprom-2025-08-20: 2711: Fix PARTITION_WALK for missing start.elf files (latest)

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* Fix PARTITION_WALK for missing start.elf files
  Fix a missing call to bootloader_reset_state so that PARTITION_WALK
  will work if the boot-partition is FAT, contains config.txt etc
  but does not have valid firmware.
  See: https://github.com/raspberrypi/rpi-eeprom/issues/738
* force_eeprom_read=0 disables HAT I2C
  Although setting force_eeprom_read=0 has always prevented the HAT EEPROM
  from being read, with the recent changes to support Power HAT+s it does
  not prevent an early scan to see if such an EEPROM exists. This can be
  problematic for applications where the I2C0 pins have been repurposed.
  Change the inhibit logic to cut all HAT I2C probing off at the knees,
  including any automatic settings of usb_max_current_enable, as it should
  always have done.
  See: https://github.com/raspberrypi/firmware/issues/1985
* bootcode.bin: Add support for boot.img ramdisk on Pi3 and earlier
  Add support for boot.img ramdisk support, enable by adding boot_ramdisk=1
  in config.txt
* rpifwcrypto: Preliminary firmware support for rpifwcrypto API
* Add config.txt to block GET_CUSTOMER_PRIVATE_KEY mailbox API
  lock_device_private_key=1
This commit is contained in:
Tim Gover
2025-08-20 16:54:35 +01:00
committed by Tim Gover
parent 4ee3f273eb
commit 513ab6e11c
3 changed files with 23 additions and 0 deletions
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firmware-2711/latest/pieeprom-2025-08-20.bin Normal file
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firmware-2711/release-notes.md
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# Raspberry Pi4 bootloader EEPROM release notes # Raspberry Pi4 bootloader EEPROM release notes
## 2025-08-20: Fix PARTITION_WALK for missing start.elf files (latest)
* Fix PARTITION_WALK for missing start.elf files
Fix a missing call to bootloader_reset_state so that PARTITION_WALK
will work if the boot-partition is FAT, contains config.txt etc
but does not have valid firmware.
See: https://github.com/raspberrypi/rpi-eeprom/issues/738
* force_eeprom_read=0 disables HAT I2C
Although setting force_eeprom_read=0 has always prevented the HAT EEPROM
from being read, with the recent changes to support Power HAT+s it does
not prevent an early scan to see if such an EEPROM exists. This can be
problematic for applications where the I2C0 pins have been repurposed.
Change the inhibit logic to cut all HAT I2C probing off at the knees,
including any automatic settings of usb_max_current_enable, as it should
always have done.
See: https://github.com/raspberrypi/firmware/issues/1985
* bootcode.bin: Add support for boot.img ramdisk on Pi3 and earlier
Add support for boot.img ramdisk support, enable by adding boot_ramdisk=1
in config.txt
* rpifwcrypto: Preliminary firmware support for rpifwcrypto API
* Add config.txt to block GET_CUSTOMER_PRIVATE_KEY mailbox API
lock_device_private_key=1
## 2025-08-13: Enable PARTITION_WALK property by default (latest) ## 2025-08-13: Enable PARTITION_WALK property by default (latest)
* Enable the PARTITION_WALK property by default * Enable the PARTITION_WALK property by default