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| _florent_ | mithro: cool, thanks | 05:32 |
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| _florent_ | mithro: next step: go further in the inception demo daveshah presented and also run LiteX/Migen (+Yosys/Nextpnr ) :) | 05:36 |
| futarisIRCcloud | _florent_: We can already do that in qemu. Should be trivial enough to run it on hardware. | 05:58 |
| _florent_ | futarisIRCcloud: nice! | 06:09 |
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| somlo | I'm at the point where I need to provide a crt0-rocket.S file (in litex/soc/software/libbase); I'm looking at existing crt0-*.S files trying to make sense of what's actually supposed to be going on -- any clues or pointers would be super helpful right now... :) | 15:16 |
| somlo | so, assuming crt0-vexriscv.S is the "closest", looks like I need to provide an entry point to "everything" (_start), which sets up the "trap_entry" (does it have to be marked .global, since it's only ever referenced within crt0-vexriscv.S?), then initializes the bss, and calls main() | 15:31 |
| somlo | so maybe replacing sw & lw with sd and ld is most of what I need ? | 15:35 |
| somlo | one more: why is the "j crt_init" followed by all those nop instructions (https://github.com/enjoy-digital/litex/blob/master/litex/soc/software/libbase/crt0-vexriscv.S#L6) -- is that an alignment thing? | 15:36 |
| tpb | Title: litex/crt0-vexriscv.S at master · enjoy-digital/litex · GitHub (at github.com) | 15:36 |
| somlo | * alignment for trap_entry, that is ? | 15:36 |
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