55 lines
3.4 KiB
Plaintext
55 lines
3.4 KiB
Plaintext
[video member=miotatsu stream_platform=twitch project=riscy title="Understanding reset_demo" vod_platform=youtube id=3vIk7XXtVHU annotator=Miblo]
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[0:05][Start the stream with a mention of the "Useful Links" forum thread[ref
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site="RISCY BUSINESS Forums"
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page="Useful Links"
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url=https://riscy.handmade.network/forums/t/2190]]
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[0:57][Start reading the message from Hossein][:hardware :fabrication]
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[2:02][Take a little digression to mention the Ultimate Hacking Keyboard[ref
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site="Ultimate Hacking Keyboard"
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url=https://ultimatehackingkeyboard.com/]]
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[3:22][Continue reading Hossein's message]
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[9:05][Recommend "Indistinguishable From Magic: Manufacturing Modern Computer Chips" video[ref
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site=YouTube
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page="Indistinguishable From Magic: Manufacturing Modern Computer Chips"
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url=https://www.youtube.com/watch?v=NGFhc8R_uO4]]
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[9:21][@miblo][Fish 'n' Chip fabrication?]
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[10:32][Read Hossein's follow-up message on SiFive's business model][:hardware :fabrication]
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[12:52][Take a refresher on what we were doing, before letting in the DOG]
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[15:38][Return]
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[16:24][@miblo][You can totally do that!]
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[16:31][:Research MIE-related and DECLARE_CSR declarations]
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[22:05][TODO: dive into DECLARE_CSR()][:blackboard]
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[27:57][@miblo][The privileged spec[ref
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site="RISC-V"
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page="Draft Privileged ISA Specification v1.9.1"
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url=https://riscv.org/specifications/privileged-isa/] was the most recent doc you were looking at]
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[29:12][Refer to the documentation on currently allocated RISC-V machine-level CSR addresses in conjunction with the code][:research]
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[30:56][Note that they only defined values for MIP_*, and :research the IRQ* values]
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[33:59][Read about the Machine interrupt-enable register (mie) and summarise what clear_csr() is doing][:research]
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[37:26][Continue reading reset_demo(), as it sets g_ext_interrupt_handlers and calls print_instructions()][:research]
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[45:02][TODO: STDOUT_FILENO, write, uart...][:blackboard]
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[45:57][Continue reading through reset_demo() as it calls PLIC-related functions][:research]
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[48:15][TODO: GPIO_REG][:blackboard]
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[49:03][Go over reset_demo() again][:research]
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[50:22]["And then there's a comment that just says The"][quote 16]
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[50:31][Read on about how reset_demo() handles timers][:research]
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[51:11][A few words on the code being the documentation]
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[53:49]["For Handmade stuff I really do like the idea of just diving in and really understanding the code"][quote 17]
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[54:01][@ql1q][Call functions and vars in a sane way and you never need comments]
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[54:16][@ql1q][I mean comments like "WIP" or "TODO" are useful indeed]
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[54:48][Continue reading about about reset_demo() handles timers and recap the areas to explore from the :blackboard]
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[56:52][Start [:research researching] the CLINT in the Freedom E310-G000 Manual[ref
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site="SiFive Developers"
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page="Freedom E310-G000 Manual"
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url=https://www.sifive.com/documentation/chips/freedom-e310-g000-manual/] and the E3 Coreplex Manual[ref
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site="SiFive Developers"
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page="E3 Coreplex Manual"
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url=https://static.dev.sifive.com/pdfjs/web/viewer.html?file=https://static.dev.sifive.com/SiFive-E3-Coreplex-v1.2.pdf]]
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[1:01:36][Determine to read RISC-V Assembly Programmer's Handbook in the User-Level ISA Specification[ref
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site=RISC-V
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page="User-Level ISA Specification v2.1"
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url=https://riscv.org/specifications]]
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[1:02:47][@miblo][Good choice to insert the N in CLINT, methinks]
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[1:03:02][That is everything for today]
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[/video]
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