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Porting apps to Leste (40)
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2011-06-23
, 20:01
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Joined on Oct 2009
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#282
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Originally Posted by lma
Is that in the sdk or using a real device?
Testing a random Harmattan binary (bc):
I'm not sure if the erratum applies also to thumb2.Code:$ arm-linux-gnueabi-readelf -A bc Attribute Section: aeabi File Attributes Tag_CPU_name: "7-A" Tag_CPU_arch: v7 Tag_CPU_arch_profile: Application Tag_ARM_ISA_use: Yes Tag_THUMB_ISA_use: Thumb-2 Tag_FP_arch: VFPv3 Tag_Advanced_SIMD_arch: NEONv1 Tag_ABI_PCS_wchar_t: 4 Tag_ABI_FP_denormal: Needed Tag_ABI_FP_exceptions: Needed Tag_ABI_FP_number_model: IEEE 754 Tag_ABI_align_needed: 8-byte Tag_ABI_align_preserved: 8-byte, except leaf SP Tag_ABI_enum_size: int Tag_ABI_HardFP_use: SP and DP Tag_ABI_VFP_args: VFP registers
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2011-06-23
, 20:28
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Posts: 2,802 |
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Joined on Nov 2007
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#283
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Neither, I just manually fetched a .deb from the harmattan repo and extracted it in /tmp. My arm readelf comes from embedian I think, but even plain readelf (this is on an x86_64 Ubuntu 11.04 box) reports the same.
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2011-06-24
, 03:54
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Posts: 1,225 |
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Joined on Feb 2011
@ Quezon City, Philippines
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#284
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Okay, I just verified that the rootfs.lzo file is NOT a UBIFS dump (compare M6-rootfs.lzo with M5-rootfs.ubifs -- you'll see my point.)
Now, it looks like you'll need to do filesystem reconstruction - the EXT4 header (EF53, or when opened in XVI32 53EF) is found after the filesystem label (rootfs apparently). Why Nokia does this is unclear - but they've done numerous ***-backwards things before, this might be one of them.
The good news is that you can directly mount -t vfat the mmc0 image.
Which leads to my next question, how do we mount rootfs.lzo? It "appears" to be compressed, but we can't be certain, as the magic was stripped out. We should be able to directly mount it just like the mmc0 image. But nothing's working. EXT4, nandsim etc. None.
EDIT: rootfs.lzo is a lzo file. However, Nokia has stripped off the header for no reason at all. I've been trying for the past 3 hours to reconstruct the header from other lzo files, with no dice. If anyone can point me to how flasher-3.5.11 handles this thing, that would be much appreciated.
Last edited by Hurrian; 2011-06-24 at 05:02.
The good news is that you can directly mount -t vfat the mmc0 image.
Which leads to my next question, how do we mount rootfs.lzo? It "appears" to be compressed, but we can't be certain, as the magic was stripped out. We should be able to directly mount it just like the mmc0 image. But nothing's working. EXT4, nandsim etc. None.
EDIT: rootfs.lzo is a lzo file. However, Nokia has stripped off the header for no reason at all. I've been trying for the past 3 hours to reconstruct the header from other lzo files, with no dice. If anyone can point me to how flasher-3.5.11 handles this thing, that would be much appreciated.
__________________
N9 PR 1.3 Open Mode + kernel-plus for Harmattan
@kenweknot, working on Glacier for Nemo.
N9 PR 1.3 Open Mode + kernel-plus for Harmattan
@kenweknot, working on Glacier for Nemo.
Last edited by Hurrian; 2011-06-24 at 05:02.
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2011-06-24
, 06:18
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Posts: 94 |
Thanked: 28 times |
Joined on Oct 2009
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#285
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Originally Posted by Hurrian
I've found the ext4 magic too, but I'm not too sure it's really an ext4 header (but it might be worth trying identifying other fields)
Now, it looks like you'll need to do filesystem reconstruction - the EXT4 header (EF53, or when opened in XVI32 53EF) is found after the filesystem label (rootfs apparently).Why Nokia does this is unclear - but they've done numerous ***-backwards things before, this might be one of them.
EDIT: rootfs.lzo is a lzo file. However, Nokia has stripped off the header for no reason at all. I've been trying for the past 3 hours to reconstruct the header from other lzo files, with no dice. If anyone can point me to how flasher-3.5.11 handles this thing, that would be much appreciated.
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2011-06-24
, 08:37
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Posts: 1,225 |
Thanked: 1,905 times |
Joined on Feb 2011
@ Quezon City, Philippines
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#286
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rootfs.lzo is likely a compressed filesystem image - BTW you'll see strings even in other lzo-compressed files 
__________________
N9 PR 1.3 Open Mode + kernel-plus for Harmattan
@kenweknot, working on Glacier for Nemo.
N9 PR 1.3 Open Mode + kernel-plus for Harmattan
@kenweknot, working on Glacier for Nemo.
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2011-06-24
, 09:54
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Posts: 94 |
Thanked: 28 times |
Joined on Oct 2009
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#287
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Originally Posted by Hurrian
Thanks, I didn't know that (it puzzles me a little though). So yeah, maybe reconstructing an lzo header might be the solution.
rootfs.lzo is likely a compressed filesystem image - BTW you'll see strings even in other lzo-compressed files
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2011-06-24
, 14:22
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Posts: 1,225 |
Thanked: 1,905 times |
Joined on Feb 2011
@ Quezon City, Philippines
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#288
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I think we might need someone who knows about how the lzo file is made. I have absolutely no idea what I'm doing here, and am mostly poking in the dark, hoping with crossed fingers that lzop will decompress it.
So far, the results have been:
So far, the results have been:
Code:
lzop: rootfs.lzo: header corrupted (checksum error) lzop: rootfs.lzo: header corrupted (transmitted in text mode?) lzop: rootfs.lzo: not a lzop file lzop: rootfs.lzo: header corrupted
__________________
N9 PR 1.3 Open Mode + kernel-plus for Harmattan
@kenweknot, working on Glacier for Nemo.
N9 PR 1.3 Open Mode + kernel-plus for Harmattan
@kenweknot, working on Glacier for Nemo.
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2011-06-24
, 19:08
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Posts: 94 |
Thanked: 28 times |
Joined on Oct 2009
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#289
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Just to add a little bit more of information, ape-algo looks like a tiny Linux system for flashing.
It's a Linux kernel with a tiny initscript running softupd. The flasher sends it to the device, which boots it and then waits for the flasher connection, which then sends the rest of the firmware.
I don't know how exactly ape-algo system is compacted, it might be lzo to, but I can't extract it.
It's a Linux kernel with a tiny initscript running softupd. The flasher sends it to the device, which boots it and then waits for the flasher connection, which then sends the rest of the firmware.
I don't know how exactly ape-algo system is compacted, it might be lzo to, but I can't extract it.
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2011-06-24
, 22:50
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Posts: 1,225 |
Thanked: 1,905 times |
Joined on Feb 2011
@ Quezon City, Philippines
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#290
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Originally Posted by corsac
Look out for the LZO headers. Also, it seems that there are 2 LZO files inside -- or it's just a kludge. Anyways, after extracting the second one, you find a romfs filesystem, but it's mangled. This is quickly turning into a very tedious excercise.
Just to add a little bit more of information, ape-algo looks like a tiny Linux system for flashing.
It's a Linux kernel with a tiny initscript running softupd. The flasher sends it to the device, which boots it and then waits for the flasher connection, which then sends the rest of the firmware.
I don't know how exactly ape-algo system is compacted, it might be lzo to, but I can't extract it.
__________________
N9 PR 1.3 Open Mode + kernel-plus for Harmattan
@kenweknot, working on Glacier for Nemo.
N9 PR 1.3 Open Mode + kernel-plus for Harmattan
@kenweknot, working on Glacier for Nemo.
Last edited by lma; 2011-06-23 at 19:22. Reason: remove irrelevant detail