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<bosje>
hi all
<bosje>
has anyone used openpiton + ariane ?
<bosje>
im running ariane in simulation and trying to set through the bootloader process. But I am not sure how to do that. I have the elf and dasm files
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<Finde>
I guess they left
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<Sos>
alright
<Sos>
finally got the weird Allwinner SDK going
<Sos>
but it's set up to build debian
<Sos>
wonder how i can hack it to make tit build FreeBSD
<jrtc27>
why do you need an SDK?
<jrtc27>
FreeBSD has a toolchain in it
<jrtc27>
make TARGET=riscv buildworld etc and go
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<bluefox>
It's implementation-specific if access to memory address zero is allowed or an exception, correct?
<bluefox>
I assume with MMU it's always allowed by CPU, and the OS just doesn't map it
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<dh`>
istr that there's something in the spec about it allowed to be entirely illegal
<dh`>
but anyway, don't use address 0
<Sos>
jrtc27, i need the sdk for boot steps
<Sos>
the images they propvide for Nezha have i think 3 or 4 extra boot partitioons
<Sos>
i think these are the risc boot steps one by one
<Sos>
i can build freebsd for risc-v just fine, but it will not boot
<sorear>
bluefox: right, if you're doing an OS and you want to trap accesses to address 0 don't map it
<dh`>
there's something to be said for using 0xffffffff (or with more f's on larger machines) as the invalid pointer, but that ship sailed
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<bluefox>
tfw you try to diagram a memory map and realize different memory areas have the same address
<bluefox>
(Instruction fetch operates on an entirely separate bus from data memory)
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<Sos>
compiling kernels is the worst job
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<cousteau>
you think so? surely there have to be worse ones
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<dh`>
compiling gcc, for example
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<jrtc27>
cross-building perl for a new architecture
<cousteau>
I was thinking, like, jobs where you have to do physical effort and/or handle disgusting substances or sensitive topics, but that too I guess
<jrtc27>
physical effort? yes. handling disgusting substances? still yes.
<jrtc27>
:P
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<dh`>
always know where to find kitten pictures before handling perl code
<dh`>
it's an important lab safety precaution, and I'm only half kidding