diff options
Diffstat (limited to 'qemu_multiarch_testing/README')
| -rw-r--r-- | qemu_multiarch_testing/README | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/qemu_multiarch_testing/README b/qemu_multiarch_testing/README new file mode 100644 index 0000000..69ddb76 --- /dev/null +++ b/qemu_multiarch_testing/README @@ -0,0 +1,63 @@ +How to test build using Aboriginal Linux system images. + +* Put a source tree into hdc.dir/. +For example, this should work: +git clone git://busybox.net/var/lib/git/busybox.git + +* Run ./make-hdc-img.sh: it will generate ext2 image file, +hdc.img, from hdc.dir/* data. This requires root for loop mount. + +* Download and unpack, or build from source and unpack +one or more system-image-ARCH directories into this directory +(the one which contains this README). + +* Run: ./parallel-build-hdc-img.sh system-image-DIR1 system-image-DIR2... +(background it if you don't want to see "Waiting to finish" thing). +This runs build in several qemu virtual machines in parallel. + +* Observe system-image-*.log file(s) with growing log of the build. + +There is no automated detection of errors for now: you need to examine +logs yourself. + +Log files will also contain uuencoded (or if all else fails, od -tx1'ed) +binary, if build was successful. + +To debug a build problem in one of the sandboxes, change keep_hdb +to "keep_hdb=true" in parallel-build-hdc-img.sh +- this preserves system-image-ARCH/hdb.img after the build, +so you can go into system-image-ARCH and run +"HDB=hdb.img ./dev-environment.sh" to debug the problem. + +You can also run "./parallel-build-hdc-img.sh -s system-image-ARCH" +- single mode, output is to screen and serial input is from keyboard. + +If hdc.dir/bin/busybox-$ARCH exists, it will be used during build +to supply additional tools. + +For me, the following system images worked: +system-image-armv4l +system-image-armv4tl +system-image-armv5l + od is buggy on arm*: + # echo Hello-hello-hello-hello | od -b + 0000000 110 145 154 154 157 055 150 145 154 154 157 055 150 145 154 154 + 0000000 157 055 150 145 154 154 157 012 + 0000000 +system-image-i686 +system-image-mips +system-image-mipsel + od is buggy on mips[el]: + # echo Hello-hello-hello-hello | od -b + 0000000 110 145 154 154 157 055 150 145 154 154 157 055 150 145 154 154 + 17767153361 157 055 150 145 154 154 157 012 + 0000000 +system-image-x86_64 + +And these did not: +system-image-armv6l - hang on "Uncompressing Linux... done, booting the kernel" +system-image-powerpc - hang early in kernel boot +system-image-sparc - hang early in userspace +system-image-m68k - my qemu doesn't like "-M q800" +system-image-mips64 - init dies "Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000a" +system-image-sh4 - qemu segfaults early in kernel boot |