Sunday, 2022-09-11

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shencheni'm working on a small vexriscv+eth+sdram system with litex_sim, using stock bios and tftp booting. the demo app boots up fine, small changes to demo works too.06:07
shenchenhowever, the instance i added eth_init() to the demo app's main(), it no longer boots.06:08
shenchenwhat's baffling to me is that if i copy the code of eth_init() to my_eth_init() in main.c, it boots. objdump tells me that my_eth_init() and eth_init() are exactly the same in assembly code.06:10
shencheni'm wondering if there is some compile/link options i need to extend the demo app, that i overlooked?06:10
shenchenTIA06:11
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HansMHi, I'm am curently playing with the PCIe stuff (Xilinx VC707). I want to read/write data from the host into the DRAM. I have followed the advice in [1] to add a host AXI MMAP component and an SoC region (to be mapped into the host), but I have no clue how the host part should look like.16:31
HansM[1] https://github.com/enjoy-digital/litepcie/issues/5416:31
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