uboot SPL updates #197
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uboot SPL updates #197
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v2.5.1 dts * changed RTC from twi0 to twi2 (compared to v2.5.0) * processed the change in traces for power latches node 2 and 3 (compared to v2.5.0) v2.5.0 => * doubled the ubi partition * removed the usb-otg traces for nodes 2-4. Node 2, 3, and 4’s USB0 interface is connected directly to the USB hub which means the USB host/client mode switching does not make sense anymore.
This commit adds logic to read the EEPROM inside SPL. This is used to early initialize the correct hardware and load the correct hardware device tree. Secondly, moved from vanilla uboot repostory + patches to a turing-machines fork of u-boot (patches are applied on top). This is an attempt to have a more tight integration with git.
This enables us to re-use the same bootloader for both 2.4 and 2.5 boards. The significant difference between the two, as far as the bootloader is concerned, is the size difference of the flash.
Booting with FIT inamge turing-pi2-istall.its results in a magic error, when the kernel tries to read the initramfs. Revert back to legacy booting until issue is resolved
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added a uboot variable that can be used to write a given eeprom version in the EEPROM. This variable is to be used as a last resort to change the contents of the eeprom. first set the correct version inside the `eeprom_ver` variable before calling `run burn_eeprom`. Other content in the eeprom is untouched. Except the first 2 bytes that will be set to 0xFF. Crc gets recalculated and written as well.
enabling a second i2c bus causes initialization errors for the i2c driver in uboot. disabling external rtc declaration in uboot for now
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We dont have eth switch management yet in Linux. However move the reset out of the uboot environment so that we can cleanly patch it out later. Added a condition to assert to correct reset pin depending on the hw version.
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This commit adds logic to read the EEPROM inside SPL. This is used to
early initialize the correct hardware and load the correct hardware
device tree.
Secondly, moved from vanilla uboot repostory + patches to a
turing-machines fork of u-boot (patches are applied on top). This is an
attempt to have a more tight integration with git.