pieeprom-2025-08-13: 2711: 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.

Author: timg236

firmware-2711/latest/pieeprom-2025-08-13.bin

@@ -1,5 +1,19 @@
 # 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)
 
 * arm_loader: Also require the early-watchdog property