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Correct freedom-u-sdk
branch / known-good SD Card image for U500 VC707?
#38
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I'm having exactly the same problem. I was trying to backtrace the problem and found something is going wrong at riscv-pk/machine/minit.c line #27 with the old vanilla branch. The statement makes u500 to print something but at the end it hangs at do_tohost_fromhost where you cannot escape the infinite loop. Don't know the reason. + for the new freedom-u-sdk, it hangs at riscv-pk/machine/mentry.S line# 277. It is waiting for the interrupt but it never happens. Mine doesn't have pcie so I might be getting the error for a different reason. |
I too am having the same issue although I am trying to boot with out the FMC PCI board. I have made changes accordingly to work without the FMC but I get stuck at the same state as the above prints. I kept doubting my changes (as there was no way for me to test the base code) however thanks to this post I think there might be some issue with base SiFive code. |
@palmer-dabbelt @henrystyles Is the freedom-u-sdk/master in-sync with the (very old) vc707 image on our site? We should probably also provide a newer vc707 image compatible with the latest (hopefully final) revision of the privileged spec... |
Ya, we need to bump everything. If freedom/master is updated then I can go deal with the software. |
I think the main effort required is to create a new VC707 image using only open-source stuff. |
I am unable to get work done for nearly a month now because of this issue. Happy to build the images myself, but unclear which Is there a specific Any info would help here, thanks, |
freedom/master should work with freedom-u-sdk/master now. Furthermore, we are preparing an updated freedom-u-sdk which should better support FPGAs. |
Hi @terpstra, thanks for the update. A small correction, in case anyone is stuck: |
We will bump the sdk and remove those branches this week. Hopefully, from
that point on they will stay compatible since the hardware-softeware
interface is no longer changing.
…On Nov 7, 2017 7:34 AM, "Ilia Lebedev" ***@***.***> wrote:
Hi @terpstra <https://github.com/terpstra>, thanks for the update.
A small correction, in case anyone is stuck: freedom/master successfully
boots with freedom-u-sdk/priv-1.10. (/new immediately panics, and /master
has seen no updates and exhibits the same opaque failure to boot).
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I am having a whole lot of trouble finding a working combination of hardware and SD card image for the u500 on a VC707. By way of a sanity check, I am trying to get vanilla hardware and software to boot.
I have in the past successfully done this with older versions of the repository.
I have tried the following hardware:
And the following software
freedom-u-sdk
I had on an SD from a few months agofreedom-u-sdk
,master
branch.freedom-u-sdk
,priv-1.10
branch.In all cases, the result is the same: the bootloader runs, but fails to boot linux:
followed by nothing. I suspect some sort of disagreement between the priv ABI enforced by hardware, and expected by software.
These builds take a long time; any pointers would be greatly appreciated.
Is there a pre-built, known-good SD card image somewhere? This would sure help reduce the search space for this issue. Please advise.
Thanks in advance,
-ilia
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