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1 | 1 | # Raspberry Pi4 bootloader EEPROM release notes |
2 | 2 |
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| 3 | +## 2025-02-11: recovery: Walk partitions to delete recovery.bin (latest) |
| 4 | + |
| 5 | +* recovery: Walk partitions to delete recovery.bin |
| 6 | + Previously, recovery.bin would fail to delete itself |
| 7 | + if the bootrom loaded recovery.bin where there are multiple FAT |
| 8 | + partitions and the first partition does not contain recovery.bin |
| 9 | + Update the rename code to walk the partition table to find |
| 10 | + the recovery.bin file to delete. |
| 11 | +* Enable overriding of high partition numbers |
| 12 | + Previously, the PARTITION=N bootloader config setting would only |
| 13 | + be used at power on reset or if the partition number passed to |
| 14 | + reboot was zero. |
| 15 | + Change the behaviour so that the bootloader config PARTITION |
| 16 | + property can override the reboot partition number if the reboot |
| 17 | + parameter is > 31. |
| 18 | +* Walk the partition table if the requested partition is not bootable |
| 19 | + Previously, if the specified boot partition was not bootable the |
| 20 | + bootloader would stop and advance to the next BOOT_ORDER. If the |
| 21 | + new PARTITION_WALK option is set to 1 the bootloader will now |
| 22 | + check each partition in turn starting from the specified partition |
| 23 | + before advancing the BOOT_ORDER. |
| 24 | + This feature is intended for use with A/B systems to handle the case |
| 25 | + where autoboot.txt is missing / corrupted. This change enables |
| 26 | + the system to failover to the next available bootable partition. |
| 27 | + The autoboot.txt file is not scanned during the partition-walk |
| 28 | + phase i.e. there is no recursive processing of autoboot.txt files. |
| 29 | + This option is only supported on physical block devices |
| 30 | + (SD, NVMe, USB) and not RAMDISK. USB assumes a single high speed |
| 31 | + device, partition walks on multiple USB devices is not recommended |
| 32 | + and may cause timeouts. |
| 33 | +* Improve keyboard handling in boot menu |
| 34 | + Try and make it more likely that we have enough time to perform key |
| 35 | + detection. |
| 36 | + Ignore mice, which were being enumerated and slowing things down. |
| 37 | + |
3 | 38 | ## 2024-12-07: Enable banklow (and so NUMA) by default (latest) |
4 | 39 |
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5 | 40 | * Enable banklow (and so NUMA) by default |
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