Date: Fri, 13 Jun 2014 03:57:53 +0600 From: Stepan Dyatkovskiy <stpworld@narod.ru> To: Ian Lepore <ian@FreeBSD.org> Cc: Tim Kientzle <tim@kientzle.com>, freebsd-arm@FreeBSD.org Subject: Re: Compilation for ARM Message-ID: <539A2261.4070705@narod.ru> In-Reply-To: <1402591005.20883.213.camel@revolution.hippie.lan> References: <53935D02.2030604@narod.ru> <6D7645D2-9C08-4B5D-BAA5-5B6EC8F66F0B@kientzle.com> <5393FF7B.4020407@narod.ru> <1402428857.20883.177.camel@revolution.hippie.lan> <5398B1A2.3010007@narod.ru> <1402591005.20883.213.camel@revolution.hippie.lan>
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Hi all, Thanks for advices! That's interesting. I have managed to launch kernel, using these u-boot binaries: http://people.freebsd.org/~gonzo/pandaboard/ Looks like specific MLO. But I'm not sure. With regular linaro u-boot, I load kernel.bin, then try start it with "go", and nothing happens. With binaries of this Gonzo guy, I did the same, and everything works fine :-/ Do you know who is it (I mean Gonzo)? I would like to ask him, what he did in his binaries. Another question: I would like to build FreeBSD, using latest clang. Currently I have tried to build it latest svn version of FreeBSD: svn://svn.freebsd.org/base/head/ With command: make TARGET_ARCH=armv6 buildworld TARGET_CPUTYPE=cortex-a9 But got next error (repeated several times):/tmp/jemalloc_atomic-22cc38.s:21: Error: garbage following instruction -- `dmb ish' So perhaps, its better to use stable version (10.0.0), but with new clang. Currently, I'm going to copy clang sources from HEAD into 10.0.0 sources tree. But perhaps there is better way to do it? Thanks! -Stepan Ian Lepore wrote: > On Thu, 2014-06-12 at 01:44 +0600, Stepan Dyatkovskiy wrote: >> Hi guys, >> Thank you! I have built it successfully. It was really simple. Currently >> I'm trying to launch with u-boot. Are here any instructions/manual how >> to run kernel with u-boot? >> Thanks! >> -Stepan > > If you compile the dtb into the kernel, you can launch the kernel > directly from u-boot. If you don't, then you need u-boot to launch > ubldr (loader(8) that uses the u-boot API, which requires a u-boot with > the API option enabled). > > The kernel can be loaded at any 1MB-boundary address, and can be > launched by jumping to the load address + 0x100, such as: > > fatload <device/partition> 11000000; go 11000100 > > If you are using a modern u-boot that enables data caches, you need to > turn them off manually, like: > > fatload <device/partition> 11000000 > dcache off; dcache flush > go 11000100 > > This is just a u-boot quirk, it disables caches on bootm and bootelf > commands, but not on a "go" command. > > -- Ian >
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