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On 08:31 Mon 30 Jan , Heath Holcomb wrote: |
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(SNIP) |
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> Thanks for the links! It looks like the stock 2.6.x kernel does not work |
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> fully with the EP93xx chips, right? |
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IIRC, it is NOT official 2.6.x kernel as its name is. |
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Official linux-2.6.15 tarball shows that, it has NO arch/arm/march-ep93xx or so. |
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So, it means you needs EP93xx patches or so, maybe. |
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|
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About Armadillo-9, it has 2.6.x and 2.4.x kernel sources. |
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http://download.atmark-techno.com/armadillo-9/source/ |
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And almost it seems work fine for the SBC's specification said. |
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|
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And then, some EP93xx chips has Maverick Crunch FPU. |
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I want to this FPU to compute some mathematical operations. |
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But now, it's PITA for me. |
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Because, for support this FPU, it needs official GNU gcc version 4.0.2 or so. |
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Otherwise, some hacks are required. |
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http://yann.poupet.free.fr/ep93xx/ |
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|
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> Do you know anything about running the kernel out of NOR flash? I ask because |
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> NOR flash can execute out of inself, instead of having to copy the kernel to |
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> RAM and run from RAM. This makes boot times faster, but NOR flash does not |
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> support filing systems the way NAND flash does (think compact flash, |
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> usbsticks, etc..). |
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I'm not familir with the features of difference of between NOR and NAND flash. |
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And then, Armadillo-9 can select which it boots from CF or its flash. |
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Mine boots from MicroDrive via CF interface at the moment. |
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After it boot, it can use USB. But it can not boots from USB stick, I heard. |
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|
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IMHO, to make boot time faster depends on boot loader and/or init script |
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rather than kernel. |
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Armadillo-9 has hermit-at as bootloader which is branched from hermit |
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and shoehorn as kernel parameters setting app. |
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sys-apps/baselayout-lite in portage tree would be nice for tweaking init |
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script, maybe. |
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-- |
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