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Make only single kernel version, offer to update sources (#11)

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Source updates may break building older releases (eg kernel#48 source breaks dtb includes for kernel#41)
* Only build latest
* offer to update sources
This commit is contained in:
Owen Carter
2024-11-07 14:17:47 +01:00
committed by GitHub
parent 140add012f
commit ba12d53a61
2 changed files with 124 additions and 84 deletions
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build-trees/README.md
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@@ -46,7 +46,9 @@ Go for a coffee.. ignore the 'git clone' suggestion.
- This will use ~1.6Gb of space.. so be prepared.
#### Updating sources
You can re-run the `apt source` command in this folder and it will only download and update as needed, but is still somewhat slow since it verifies the existing downloads when updating.
The `make_dtbs.sh` command used below will offer to update the source tree when run, this shoule be done wnenever a new kernel vesion s being built, but does not need to be re-done after that version has been fetched at least once.
You can also manually re-run the `apt source` command in this folder and it will only download and update as needed, but is still somewhat slow since it verifies the existing downloads when updating.
-------------------------------------------
# Building the device tree(s)
@@ -61,7 +63,7 @@ Run the build as a normal user (the same user used to fetch the sources above).
* `.dtb` is the binary compiled device tree, this is what we are building here, and is supplied to the kernel at boot time.
## device tree sources
For convenience, the default `sun20i-d1-mangopi-mq-pro.dts` file from the Ubuntu source is also linked here.
For convenience, the default `sun20i-d1-mangopi-mq-pro.dts` file from the Ubuntu source is also linked here.
Rather than modifying the default tree you should copy it to a custom name, eg 'my-project.dts'. Or you can copy in examples from the [alt-trees](../alt-trees/) folder.
@@ -80,27 +82,35 @@ This will:
```console
$ ./make_dtbs.sh
Building for kernels: 6.8.0-41-generic
Update source tree (may be slow)? [y/N]:
Cleaning existing 6.8.0-41-generic build directory
Available kernels:
[1] 6.8.0-41-generic
[2] 6.8.0-44-generic
[3] 6.8.0-47-generic
[4] 6.8.0-48-generic - currently running kernel
Which kernel to build? [4]:
Compiling against headers for 6.8.0-41-generic
Precompiling all includes in build root into 6.8.0-41-generic build directory
sun20i-common-regulators.dtsi -> 6.8.0-41-generic/sun20i-common-regulators.dtsi
sun20i-d1.dtsi -> 6.8.0-41-generic/sun20i-d1.dtsi
sun20i-d1s.dtsi -> 6.8.0-41-generic/sun20i-d1s.dtsi
sunxi-d1-t113.dtsi -> 6.8.0-41-generic/sunxi-d1-t113.dtsi
sunxi-d1s-t113.dtsi -> 6.8.0-41-generic/sunxi-d1s-t113.dtsi
Precompiling all sources in build root into 6.8.0-41-generic build directory
my-project.dts -> 6.8.0-41-generic/my-project.dts
sun20i-d1-mangopi-mq-pro.dts -> 6.8.0-41-generic/sun20i-d1-mangopi-mq-pro.dts
Compiling all device tree sources in 6.8.0-41-generic build directory
6.8.0-41-generic/my-project.dts -> 6.8.0-41-generic/my-project.dtb
6.8.0-41-generic/sun20i-d1-mangopi-mq-pro.dts -> 6.8.0-41-generic/sun20i-d1-mangopi-mq-pro.dtb
Building for kernel: 6.8.0-48-generic
Cleaning existing 6.8.0-48-generic build directory
Compiling against headers for 6.8.0-48-generic
Precompiling all includes in build root into 6.8.0-48-generic build directory
sun20i-common-regulators.dtsi -> 6.8.0-48-generic/sun20i-common-regulators.dtsi
sun20i-d1.dtsi -> 6.8.0-48-generic/sun20i-d1.dtsi
sun20i-d1s.dtsi -> 6.8.0-48-generic/sun20i-d1s.dtsi
sunxi-d1-t113.dtsi -> 6.8.0-48-generic/sunxi-d1-t113.dtsi
sunxi-d1s-t113.dtsi -> 6.8.0-48-generic/sunxi-d1s-t113.dtsi
Precompiling all sources in build root into 6.8.0-48-generic build directory
my-project.dts -> 6.8.0-48-generic/my-project.dts
sun20i-d1-mangopi-mq-pro.dts -> 6.8.0-48-generic/sun20i-d1-mangopi-mq-pro.dts
Compiling all device tree sources in 6.8.0-48-generic build directory
6.8.0-48-generic/my-project.dts -> 6.8.0-48-generic/my-project.dtb
6.8.0-48-generic/sun20i-d1-mangopi-mq-pro.dts -> 6.8.0-48-generic/sun20i-d1-mangopi-mq-pro.dtb
Success. Consider running 'flash_latest.sh' to make permanent (see docs)
```
The `6.8.0-41-generic` folder now has our device tree: `my-project.dtb`
The `6.8.0-48-generic` folder now has our device tree: `my-project.dtb`
- We also generate the default device tree, this can be ignored.
The tool builds for *all* the kernels available on the system, not just the running kernel.
@@ -169,21 +179,25 @@ Running *flash-kernel* immediately after this will fail since it cannot yet find
Run `flash_latest.sh`, this will ask you to confirm which kernel version you want to copy from.
- It defaults to the current running kernel.
- When upgrading this allows you to precompile and install the correct DTB in advance before rebooting into the new kernel.
- It needs root access via `sudo`, (you will be prompted to enter your password if using sudo with a password)
```console
$ ./flash_latest.sh
$ ./flash_latest.sh
Available kernels:
[1] 6.8.0-41-generic - currently running kernel
Which kernel to link? [1]:
[1] 6.8.0-41-generic
[2] 6.8.0-44-generic
[3] 6.8.0-47-generic
[4] 6.8.0-48-generic - currently running kernel
Which kernel to link? [4]:
Cleaning '/etc/flash-kernel/dtbs/' and copying in device tree binaries from '6.8.0-41-generic/'
/home/owen/MQ-Pro-IO/build-trees/6.8.0-41-generic/my-project.dtb --> /etc/flash-kernel/dtbs/my-project.dtb
/home/owen/MQ-Pro-IO/build-trees/6.8.0-41-generic/sun20i-d1-mangopi-mq-pro.dtb --> /etc/flash-kernel/dtbs/sun20i-d1-mangopi-mq-pro.dtb
Run 'flash-kernel' to apply device tree? [Y]:
Cleaning '/etc/flash-kernel/dtbs/' and copying in device tree binaries from '6.8.0-48-generic/'
/home/owen/MQ-Pro-IO/build-trees/6.8.0-48-generic/my-project.dtb --> /etc/flash-kernel/dtbs/my-project.dtb
/home/owen/MQ-Pro-IO/build-trees/6.8.0-48-generic/sun20i-d1-mangopi-mq-pro.dtb --> /etc/flash-kernel/dtbs/sun20i-d1-mangopi-mq-pro.dtb
Run 'flash-kernel' to apply device tree? [Y]: y
Using DTB: custom/my-project.dtb
Installing /etc/flash-kernel/dtbs/my-project.dtb into /boot/dtbs/6.8.0-41-generic/custom/my-project.dtb
Installing /etc/flash-kernel/dtbs/my-project.dtb into /boot/dtbs/6.8.0-48-generic/custom/my-project.dtb
Taking backup of my-project.dtb.
Installing new my-project.dtb.
System running in EFI mode, skipping.