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RISCY BUSINESS»Episode Guide
Studying local-interrupts Demo
References ▼
The RISC-V Reader: An Open Architecture Atlas
[1]2:18
RISC-V
RISC-V Books
[2]5:42
SiFive Blog
Palmer Dabbelt: "All Aboard, Part 1: The -march, -mabi, and -mtune arguments to RISC-V Compilers"
[3]7:12
SiFive Blog
Palmer Dabbelt: "All Aboard, Part 2: Relocations in ELF Toolchains"
[4]7:12
SiFive Blog
Palmer Dabbelt: "All Aboard, Part 3: Linker Relaxation in the RISC-V Toolchain"
[5]7:12
Twitter
Earlier this morning, we shipped the 2nd iteration of our bi-monthly newsletter, The SiFive Download! Take a look
[6]8:44
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[Announcement] Giveaway Contest (100 Subs)!
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[9]26:56[10]29:41
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Neo Ar
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Matt Mascarenhas
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0:14riskyfive Do you have any init.h in your RISC-V SDKs?
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0:14riskyfive Do you have any init.h in your RISC-V SDKs?
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0:14riskyfive Do you have any init.h in your RISC-V SDKs?
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0:59riskyfive It's required by riscv-tests, but I can't find it anywhere
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0:59riskyfive It's required by riscv-tests, but I can't find it anywhere
🗪
0:59riskyfive It's required by riscv-tests, but I can't find it anywhere
🗪
2:18Shout-out to The RISC-V Reader: An Open Architecture Atlas1
2:18Shout-out to The RISC-V Reader: An Open Architecture Atlas1
2:18Shout-out to The RISC-V Reader: An Open Architecture Atlas1
5:42Plug RISC-V Books2
5:42Plug RISC-V Books2
5:42Plug RISC-V Books2
7:12riskyfive By the way, you totally have to read these three blog posts3,4,5
🗪
7:12riskyfive By the way, you totally have to read these three blog posts3,4,5
🗪
7:12riskyfive By the way, you totally have to read these three blog posts3,4,5
🗪
8:44Plug SiFive's bi-monthly newsletter6
8:44Plug SiFive's bi-monthly newsletter6
8:44Plug SiFive's bi-monthly newsletter6
9:12Plug the 100-subscriber milestone giveaway contest7
9:12Plug the 100-subscriber milestone giveaway contest7
9:12Plug the 100-subscriber milestone giveaway contest7
10:05Jump back into perusing the demos
10:05Jump back into perusing the demos
10:05Jump back into perusing the demos
10:45riskyfive Be right back
🗪
10:45riskyfive Be right back
🗪
10:45riskyfive Be right back
🗪
10:49Continue to peruse the demos
10:49Continue to peruse the demos
10:49Continue to peruse the demos
11:18Mention the second webcam
11:18Mention the second webcam
11:18Mention the second webcam
13:45riskyfive Back
🗪
13:45riskyfive Back
🗪
13:45riskyfive Back
🗪
13:49Plan our studies
13:49Plan our studies
13:49Plan our studies
14:45riskyfive So what's the plan, again? Sorry
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14:45riskyfive So what's the plan, again? Sorry
🗪
14:45riskyfive So what's the plan, again? Sorry
🗪
15:10Jump in to the local_interrupts.c demo
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15:10Jump in to the local_interrupts.c demo
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15:10Jump in to the local_interrupts.c demo
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22:35Consult handle_trap() in the HiFive1's init.c
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22:35Consult handle_trap() in the HiFive1's init.c
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22:35Consult handle_trap() in the HiFive1's init.c
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23:36Continue studying local_interrupts.c, on the Machine Software Interrupt Handler
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23:36Continue studying local_interrupts.c, on the Machine Software Interrupt Handler
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23:36Continue studying local_interrupts.c, on the Machine Software Interrupt Handler
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26:56Check out SiFive's site for information on the E51 Coreplex8 and the Freedom platforms9
26:56Check out SiFive's site for information on the E51 Coreplex8 and the Freedom platforms9
26:56Check out SiFive's site for information on the E51 Coreplex8 and the Freedom platforms9
29:13riskyfive That's not new. But they don't sell it
🗪
29:13riskyfive That's not new. But they don't sell it
🗪
29:13riskyfive That's not new. But they don't sell it
🗪
29:41Continue to check out the E5110
29:41Continue to check out the E5110
29:41Continue to check out the E5110
32:36Continue to study local_interrupts.c, on input handling and timing
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32:36Continue to study local_interrupts.c, on input handling and timing
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32:36Continue to study local_interrupts.c, on input handling and timing
📖
40:50Hunt for MIP_MLIP
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40:50Hunt for MIP_MLIP
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40:50Hunt for MIP_MLIP
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44:50Learn the definition of MIP_MLIP, and review set_csr()
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44:50Learn the definition of MIP_MLIP, and review set_csr()
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44:50Learn the definition of MIP_MLIP, and review set_csr()
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48:01Learn the LOCAL_INT_* definitions
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48:01Learn the LOCAL_INT_* definitions
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48:01Learn the LOCAL_INT_* definitions
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48:38bananathemonkey Probably the lower 16b are reserved for something else
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48:38bananathemonkey Probably the lower 16b are reserved for something else
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48:38bananathemonkey Probably the lower 16b are reserved for something else
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48:53Relate those LOCAL_INT* values to their usage in enable_local_interrupts()
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48:53Relate those LOCAL_INT* values to their usage in enable_local_interrupts()
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48:53Relate those LOCAL_INT* values to their usage in enable_local_interrupts()
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51:03Shifting MIP_MLIP by local interrupt values
🖌
51:03Shifting MIP_MLIP by local interrupt values
🖌
51:03Shifting MIP_MLIP by local interrupt values
🖌
52:34bananathemonkey It's the amount you're left-shifting by, though, not the actual value
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52:34bananathemonkey It's the amount you're left-shifting by, though, not the actual value
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52:34bananathemonkey It's the amount you're left-shifting by, though, not the actual value
🗪
53:55bananathemonkeys It looks like it's a single bit mask for a 32b field where the lower 16b are reserved for something (local interrupts, maybe?)
🗪
53:55bananathemonkeys It looks like it's a single bit mask for a 32b field where the lower 16b are reserved for something (local interrupts, maybe?)
🗪
53:55bananathemonkeys It looks like it's a single bit mask for a 32b field where the lower 16b are reserved for something (local interrupts, maybe?)
🗪
54:14Address some texts
54:14Address some texts
54:14Address some texts
55:21Wrap it up with a shout-out to new Patreon supporters
55:21Wrap it up with a shout-out to new Patreon supporters
55:21Wrap it up with a shout-out to new Patreon supporters