[opensuse-arm] A couple of u-boot links
I recently ran across an explanation, which I think is now somewhat dated, on how booting works on Raspberry Pi. I thought others might find it interesting. http://dius.com.au/2015/08/19/raspberry-pi-uboot/ I think there are efforts underway to get opensuse running on the new pine64 boards. I found the source for their u-boot. We will certainly need that. https://github.com/longsleep/u-boot-pine64 Bill -- To unsubscribe, e-mail: opensuse-arm+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-arm+owner@opensuse.org
Am 28.03.2016 um 20:21 schrieb Bill Merriam <lists@billmerriam.com>:
I recently ran across an explanation, which I think is now somewhat dated, on how booting works on Raspberry Pi. I thought others might find it interesting.
http://dius.com.au/2015/08/19/raspberry-pi-uboot/
I think there are efforts underway to get opensuse running on the new pine64 boards. I found the source for their u-boot. We will certainly need that.
I have an AArch64 and efi enabled version of u-boot for pine64 in my repo on github. What's missing is a good idea on how to solve the spl/boot0 mess. I can't get SPL to run in 64bit mode, only AArch32. But even then it needs a file called libdram to initialize the memory controller and that file is not gpl compatible. The boot0 binary that comes from Allwinner implements what SPL would implement, but it reads from offsets on the sd card that are insane (~20MB). If we can somehow resolve either one of the problems, we could build an efi image today. Alex
Bill
-- To unsubscribe, e-mail: opensuse-arm+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-arm+owner@opensuse.org
-- To unsubscribe, e-mail: opensuse-arm+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-arm+owner@opensuse.org
Am 28.03.2016 um 20:41 schrieb Alexander Graf <agraf@suse.de>:
Am 28.03.2016 um 20:21 schrieb Bill Merriam <lists@billmerriam.com>:
I recently ran across an explanation, which I think is now somewhat dated, on how booting works on Raspberry Pi. I thought others might find it interesting.
http://dius.com.au/2015/08/19/raspberry-pi-uboot/
I think there are efforts underway to get opensuse running on the new pine64 boards. I found the source for their u-boot. We will certainly need that.
I have an AArch64 and efi enabled version of u-boot for pine64 in my repo on github. What's missing is a good idea on how to solve the spl/boot0 mess.
I can't get SPL to run in 64bit mode, only AArch32. But even then it needs a file called libdram to initialize the memory controller and that file is not gpl compatible.
The boot0 binary that comes from Allwinner implements what SPL would implement, but it reads from offsets on the sd card that are insane (~20MB).
If we can somehow resolve either one of the problems, we could build an efi image today.
Ok, so I ended up binary patching the Allwinner boot0 blob to load from a different sector instead. With that, we have images that mostly work: https://en.opensuse.org/HCL:Pine64 The main blocker for me atm is missing hdmi support. I just can't get the display to work properly... Alex -- To unsubscribe, e-mail: opensuse-arm+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-arm+owner@opensuse.org
participants (2)
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Alexander Graf -
Bill Merriam