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62 lines
2.0 KiB
Markdown
62 lines
2.0 KiB
Markdown
# uniLoader
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A secondary bootloader that is capable of loading the upstream Linux kernel for Android and iOS-based devices.</br></br>
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The purpose behind it is to provide a small shim for avoiding vendor bootloader quirks.</br>
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> (ex.: some newer Exynos phones leave decon framebuffer refreshing disabled right before jumping to kernel, which makes initial debugging efforts when bringing up the platform to upstream linux hard)</br>
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The currently supported architectures are ARMV7 and AARCH64.</br>
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## Preparation
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1. Install a toolchain that matches your target architecture (ex. AArch64 cross-toolchain):
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```sh
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sudo apt install aarch64-linux-gnu
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```
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2. Clone the repository:
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```sh
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git clone https://github.com/ivoszbg/uniLoader
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```
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3. Navigate to the project directory:
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```sh
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cd uniLoader
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```
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4. Place your kernel and device tree blobs under the `blob/` directory.
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### Make Syntax
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```sh
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make ARCH=<arch> CROSS_COMPILE=<toolchain>
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```
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### Building Example
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```sh
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sudo apt install aarch64-linux-gnu
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git clone https://github.com/ivoszbg/uniLoader
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cd uniLoader
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cp /home/user/linux/arch/arm64/boot/Image blob/Image
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cp /home/user/linux/arch/arm64/boot/dts/exynos/exynos8895-dreamlte.dtb blob/dtb
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make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- -j4 dreamlte_defconfig
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make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- -j4
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```
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### Usage
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```sh
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For Apple devices: Load the generated uniLoader binary via PongoOS.
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For Android devices: Replace the Linux kernel in your boot.img with the uniLoader binary.
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```
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### TODO LIST
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1. [C] Allow loading instead of PongoOS for Apple devices;
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2. [C] Fix/replace the libc implementation;
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3. [M] Implement a serial library and make the debug lib less hacky;
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4. [M] Implement more features:
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> New devices</br>
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> Boot menu with countdown timer and selectable items via GPIO volume keys</br>
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> Threaded execution
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<h6>
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[C] = Critical for overall ease of use and functionality</br>
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[M] = Nice to have :)
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</h6>
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### License
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This project is licensed under GPL2.
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