Eric Aasen

Yeah. So notably we, uh, we're able to take the BM. So in Ruby AMD made this BMC board called a Hawaii board that has an a speed BMC and kind of all your, your traditional BMC stuff, but it's on an OCP card. So we can pull that out. And so we developed our own OCP, uh, form factor card. And we, uh, we call that the grapefruit.

Yeah. So notably we, uh, we're able to take the BM. So in Ruby AMD made this BMC board called a Hawaii board that has an a speed BMC and kind of all your, your traditional BMC stuff, but it's on an OCP card. So we can pull that out. And so we developed our own OCP, uh, form factor card. And we, uh, we call that the grapefruit.

and that goes into that bmc slot and connects to the ocp connector but it has rsp and rot and uh xilinx fpga there and some flash and you know kind of basic so i3c level translators that kind of thing so we can kind of hotwire into the the ruby dev platform with our you know what is effectively our bmc topology and do some development there

and that goes into that bmc slot and connects to the ocp connector but it has rsp and rot and uh xilinx fpga there and some flash and you know kind of basic so i3c level translators that kind of thing so we can kind of hotwire into the the ruby dev platform with our you know what is effectively our bmc topology and do some development there

And so that's kind of... I've been working on Grapefruit a lot the last few months, I guess, and doing some of the FPGA work and trying to get the thing integrated so that Hubris runs on it and we've got, you know, our Ethernet stack runs on it and all of that. And that's all going pretty smoothly. And we're getting close to... being able to use our grapefruit board as an eSpy boot target.

And so that's kind of... I've been working on Grapefruit a lot the last few months, I guess, and doing some of the FPGA work and trying to get the thing integrated so that Hubris runs on it and we've got, you know, our Ethernet stack runs on it and all of that. And that's all going pretty smoothly. And we're getting close to... being able to use our grapefruit board as an eSpy boot target.

So I don't know that we have talked a lot about eSpy boot.

So I don't know that we have talked a lot about eSpy boot.

Yeah, so Turin supports... You can do the standard Spynor boot, like all of these devices have done for a while. But they added eSpy boot, which is based off an Intel standard. And so it's an extension to eSpy, which is kind of like an LPC replacement. But it's an extension to that that allows you to have...

Yeah, so Turin supports... You can do the standard Spynor boot, like all of these devices have done for a while. But they added eSpy boot, which is based off an Intel standard. And so it's an extension to eSpy, which is kind of like an LPC replacement. But it's an extension to that that allows you to have...

what they call slave attached storage and or slave attached file storage or some flash storage something like that and That allows you to boot off of over the spy network and it's basically built exactly for the server use case So, you know you have a BMC or some kind of device sitting there and then the flash is hiding behind that and so you talk spy to that device and then it goes off and fetches the flash and does whatever it needs to do and

what they call slave attached storage and or slave attached file storage or some flash storage something like that and That allows you to boot off of over the spy network and it's basically built exactly for the server use case So, you know you have a BMC or some kind of device sitting there and then the flash is hiding behind that and so you talk spy to that device and then it goes off and fetches the flash and does whatever it needs to do and

you know out of spy nor and and or I guess you could you know do it off of NVMe or something if you'd like and You just feed it the bytes that it requested back over the east by interface and so and why that's how we're planning So so what's that what why is what why did we need to enhance spy to do that?

you know out of spy nor and and or I guess you could you know do it off of NVMe or something if you'd like and You just feed it the bytes that it requested back over the east by interface and so and why that's how we're planning So so what's that what why is what why did we need to enhance spy to do that?

Well, I mean so you can talk spy to a nor flash, but that's that's basically all you can do is And the eSpy protocol kind of sits on top of what looks like a fairly standard spy, like QuadSpy interface. But it allows you to go request transactions, and then you just wait until the device goes and gets them. So, you know, Flash is notoriously slow.

Well, I mean so you can talk spy to a nor flash, but that's that's basically all you can do is And the eSpy protocol kind of sits on top of what looks like a fairly standard spy, like QuadSpy interface. But it allows you to go request transactions, and then you just wait until the device goes and gets them. So, you know, Flash is notoriously slow.

And so if you are the only device talking to a, uh, like a quad spy and you ask it for something or you ask it to go do an erase or whatever, you basically just kind of have to hang out and spin your tires until it finishes and wants to give you that data back. And over the eSpy interface, they do posted and non-posted transactions.

And so if you are the only device talking to a, uh, like a quad spy and you ask it for something or you ask it to go do an erase or whatever, you basically just kind of have to hang out and spin your tires until it finishes and wants to give you that data back. And over the eSpy interface, they do posted and non-posted transactions.

So you can do these non-posted transactions and say, hey, I want a kilobyte of flash from this address. And you send that message. And then you can continue on using eSpy, talking to the device, doing other things, while whatever the eSpy target is goes off and does the work to get you your kilobyte of flash. And then it'll let you know with an alert that it has data for you.

So you can do these non-posted transactions and say, hey, I want a kilobyte of flash from this address. And you send that message. And then you can continue on using eSpy, talking to the device, doing other things, while whatever the eSpy target is goes off and does the work to get you your kilobyte of flash. And then it'll let you know with an alert that it has data for you.