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pieeprom-2025-03-10: 2712: Add [boot_partition] filter plus SDRAM init fixes (latest)

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* Update SDRAM init timings to intermittent 8-flash SDRAM init errors
  on some boards.
  See: https://github.com/raspberrypi/rpi-eeprom/issues/67
* config: Fix missing initialisation of selected_expr to 1 in config.txt
  Without an [all] section the new expression filter might default to
  false. This impacts the bootloader early parsing of config.txt
  for things like boot_ramdisk rather than the later config.txt pass
  for device-tree parsing.
* config_loader: Add support [boot_partition=N] as an expression filter
  The boot_partition tests whether the partition number N matches
  the number that the system is booting from. This expression is
  only supported in config.txt and is designed to make it easier
  to have common boot.img ramdisks in an A/B system where the
  conditional loads a different cmdline.txt file depending on
  which partition boot.img is loaded from.
This commit is contained in:
Tim Gover
2025-03-10 17:22:53 +00:00
committed by timg236
parent 3a16bd016f
commit d50b2b32f1
3 changed files with 18 additions and 0 deletions
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firmware-2712/release-notes.md
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# Raspberry Pi5 bootloader EEPROM release notes # Raspberry Pi5 bootloader EEPROM release notes
## 2025-03-10: Add [boot_partition] filter plus SDRAM init fixes (latest)
* Update SDRAM init timings to intermittent 8-flash SDRAM init errors
on some boards.
See: https://github.com/raspberrypi/rpi-eeprom/issues/67
* config: Fix missing initialisation of selected_expr to 1 in config.txt
Without an [all] section the new expression filter might default to
false. This impacts the bootloader early parsing of config.txt
for things like boot_ramdisk rather than the later config.txt pass
for device-tree parsing.
* config_loader: Add support [boot_partition=N] as an expression filter
The boot_partition tests whether the partition number N matches
the number that the system is booting from. This expression is
only supported in config.txt and is designed to make it easier
to have common boot.img ramdisks in an A/B system where the
conditional loads a different cmdline.txt file depending on
which partition boot.img is loaded from.
## 2025-03-03: Fix bootloader pull configuration on 2712D0 (latest) ## 2025-03-03: Fix bootloader pull configuration on 2712D0 (latest)
* Fix pull configuration on 2712D0 * Fix pull configuration on 2712D0