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pieeprom-2025-08-13: 2711: Enable PARTITION_WALK property by default (latest)

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* Enable the PARTITION_WALK property by default
  Previously, the new PARTITION_WALK which searches for bootable
  partitions after a failure had to be explicitly enabled. Change
  the default to be enabled by default. It can be switched off by
  setting PARTITION_WALK=0 in the EEPROM config.
* Optimise bootmain for size on Pi4
  Pi4 only has a 512KB SPI flash EEPROM and the addition of features
  plus fixes is now causing contention for space between the code and
  the EEPROM config. Since bootmain is only responsible for loading
  start.elf revert to the original configuration which is optimised
  for size rather than speed. Pi5 continues to be optimised for speed.
This commit is contained in:
Tim Gover
2025-08-13 15:10:28 +01:00
committed by Tim Gover
parent 2349daafac
commit a9ad05065b
3 changed files with 14 additions and 0 deletions
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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
## 2025-08-13: Enable PARTITION_WALK property by default (latest)
* Enable the PARTITION_WALK property by default
Previously, the new PARTITION_WALK which searches for bootable
partitions after a failure had to be explicitly enabled. Change
the default to be enabled by default. It can be switched off by
setting PARTITION_WALK=0 in the EEPROM config.
* Optimise bootmain for size on Pi4
Pi4 only has a 512KB SPI flash EEPROM and the addition of features
plus fixes is now causing contention for space between the code and
the EEPROM config. Since bootmain is only responsible for loading
start.elf revert to the original configuration which is optimised
for size rather than speed. Pi5 continues to be optimised for speed.
## 2025-07-17: arm_loader: Also require the early-watchdog property (latest) ## 2025-07-17: arm_loader: Also require the early-watchdog property (latest)
* arm_loader: Also require the early-watchdog property * arm_loader: Also require the early-watchdog property