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Diffstat (limited to 'results/scraper/launchpad-without-comments/1596832')
| -rw-r--r-- | results/scraper/launchpad-without-comments/1596832 | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/results/scraper/launchpad-without-comments/1596832 b/results/scraper/launchpad-without-comments/1596832 new file mode 100644 index 00000000..35bc72f2 --- /dev/null +++ b/results/scraper/launchpad-without-comments/1596832 @@ -0,0 +1,55 @@ +e500 -bios/-kernel broken with big images + +This is tested using qemu 2.4.1, but it looks like the code qemu/hw/ppc/e500.c has not changed since. This looks like the source of the problem: http://git.qemu.org/?p=qemu.git;a=commitdiff;h=3812c71ffaa2cf733c3087792b859fef30b7545f + + +What works: +---------- + +Basic invocation qemu-system-ppc -machine ppce500 -monitor stdio -bios u-boot.e500 works, I get the uboot prompt and this: + +(qemu) info roms +addr=0000000000f00000 size=0x044b8c mem=ram name="phdr #0: .../qemu/share/qemu/u-boot.e500" +addr=0000000000f81000 size=0x006b00 mem=ram name="phdr #1: .../qemu/share/qemu/u-boot.e500" + + +Passing u-boot.e500 image as kernel (-bios u-boot.e500 -kernel u-boot.e500) appears to work, $qemu_kernel_addr is filled in, though (as expected) uboot complains about the image format. + +(qemu) info roms +addr=0000000000f00000 size=0x044b8c mem=ram name="phdr #0: .../qemu/share/qemu/u-boot.e500" +addr=0000000000f81000 size=0x006b00 mem=ram name="phdr #1: .../qemu/share/qemu/u-boot.e500" +addr=0000000002000000 size=0x054e8c mem=ram name=".../qemu/share/qemu/u-boot.e500 + + + +What doesn't work: +----------------- + +However, once I try to load a big image (>=32 MiB), uboot doesn't even show anything: + +qemu-system-ppc -machine ppce500 -monitor stdio -bios u-boot.e500 -kernel boot/vmlinux -m 1024 + +(qemu) info roms +addr=0000000000f00000 size=0x044b8c mem=ram name="phdr #0: .../qemu/share/qemu/u-boot.e500" +addr=0000000000f81000 size=0x006b00 mem=ram name="phdr #1: .../qemu/share/qemu/u-boot.e500" +addr=0000000002000000 size=0x27aeedc mem=ram name="boot/vmlinux" + +... +(gdb) bt +#0 0x00f2efcc in ?? () +#1 0x00f31554 in ?? () +#2 0x00f03f4c in ?? () +#3 0x00f04458 in ?? () +#4 0x00f028dc in ?? () +#5 0x00f01080 in ?? () + + + +The thing is, this used to work +- before the commit, where I'd just pass the image as -kernel option, and it booted. + + +If I do that now (w/o the -bios option, using the exact same image), the kernel gets loaded twice, only at different addresses (the cause is obvious from the commit), causing overlap error: + +qemu-system-ppc -machine ppce500 -monitor stdio -kernel boot/vmlinux -m 1024 +QEMU 2.4.1 monitor - type 'help' for more information +(qemu) rom: requested regions overlap (rom boot/vmlinux. free=0x00000000027492fc, addr=0x0000000002000000) \ No newline at end of file |