bootcode4: Improved DDR setup for old (or missing) EEPROM images

raspberrypi / usbboot

Raspberry Pi USB booting code, moved from tools repository

Apache License 2.0

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bootcode4: Improved DDR setup for old (or missing) EEPROM images #149

Closed timg236 closed 2 years ago

timg236 commented 2 years ago

Ideally, the bootloader EEPROM should be updated before using bootcode4 to run Linux so that full SDRAM init can be loaded. This version fails over to a generic slow configuration if BRCM DDR FW is not found.

timg236 commented 2 years ago

@peterharperuk @maxnet

peterharperuk commented 2 years ago

I should probably know, but why has bootcode4.bin been removed from msd and eeprom-erase?

timg236 commented 2 years ago

I should probably know, but why has bootcode4.bin been removed from msd and eeprom-erase?

It hasn't. It's just the buggy Github UI. I think it just shows in red if it's smaller but you can click on the object and download it!

peterharperuk commented 2 years ago

ah - silly me. Looks good then