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Since Linux 3.0.101 which is used in Replicant 6.0, the
kernel size increased a lot.
Because of that, in Replicant 11, the recovery initramfs is
compressed with xz to fit in the 8MiB RECOVERY partition of
the Galaxy SIII (GT-I9300) and Galaxy SIII 4G (GT-I9305).
Having the ability to add root to Replicant 11 recovery
images helps a lot with the development or configuration
of the recovery and install procedure as with this script
we can have a shell in the recovery (to look at partitions,
retrieve logs, etc) without needing to boot and setup
Replicant.
This script was also tested a Replicant 11 recovery on a
Galaxy SIII (GT-I9300), and once flashed the recovery boots
and we can get a shell with 'sudo adb shell'.
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
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Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
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Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
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Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
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They are not used by the code handling pure zImage KERNEL
and RECOVERY images.
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
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Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
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Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
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Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
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While abootimg git[1] has no new commits since 2021, FSO's
unbootimg is not maintained at all as work on the
Freesmartphone.org has stopped.
As abootimg is used by diffoscope and it is pakcaged by
Debian and Guix, so it's probably better to use to abootimg
since more people will more likely already have it in the
distribution they use and since it's a dependency of
diffoscope we are more likely tools with the same command
line interface in the future than the interface of FSO's
unbootimg.
I added a package for abootimg 6.0 in Parabola and Aur in
order to make it easier for Parabola users to transition
from fso-unbootimg to abootimg.
[1]https://github.com/ggrandou/abootimg
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
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Without that fix, running 'make test-recovery-i9300' twice
produces two different images.
With diffoscope we can see that the only differences between
the two images are the gzip timestamps of the initramfs and
the bootimage ID:
--- tests/recovery-i9300-with-root.img.1
+++ tests/recovery-i9300-with-root.img
├── abootimg -i {}
│ @@ -13,9 +13,9 @@
│ * load addresses:
│ kernel: 0x40008000
│ ramdisk: 0x41000000
│ tags: 0x40000100
│
│ * cmdline = console=ttySAC2,115200
│
│ -* id = 0xbdaf2901 0x9c9b846c 0x229caf97 0x9a73b1e6 0x1403c772 0x00000000 0x00000000 0x00000000
│ +* id = 0x7551c944 0x85dcc898 0xbce08232 0x6de196b1 0x39ac56b5 0x00000000 0x00000000 0x00000000
├── initrd.img
│ ├── filetype from file(1)
│ │ @@ -1 +1 @@
│ │ -gzip compressed data, was "ramdisk.cpio", last modified: Thu Sep 30 18:02:46 2021, from Unix
│ │ +gzip compressed data, was "ramdisk.cpio", last modified: Thu Sep 30 18:02:53 2021, from Unix
As in the current mkbootimg python implementation, the ID is
generated from the checksum of various components of the
image, just fixing the gzip command fixes the tests.
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
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Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
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This works but it's currently too fragile:
- For the zImages, it relies on the compressed image being smaller,
if not we need to at least append the size of the compressed Image
to the zImage
- It doesn't autodetect much, for instance we need to autodetect the
compression type (xz, lzma, gzip, etc).
- The bootimages are not reproducibles (probably because a random ID
is added to the image). This prevents adding some easy testing where
we could automatically download some Replicant 6 images and add root
to them and compare the result with some checksums.
The source code also has additional TODOs inside it.
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
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