# kernel-v2.6.32

**Repository Path**: LightSQuQ/kernel-v2.6.32

## Basic Information

- **Project Name**: kernel-v2.6.32
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: GPL-2.0
- **Default Branch**: firmadyne-v2.6.32.68
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2020-07-16
- **Last Updated**: 2024-10-23

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

Introduction
============

This contains the modified MIPS kernel for the FIRMADYNE framework, which
includes an in-tree `firmadyne` module to perform instrumentation and
emulation.

This module can be configured using the following parameters:

| Parameter | Default   | Values | Description |
| --------- | --------- | ------ | ----------- |
| devfs     | 1 (on)    | 0, 1   | Create stubs in devfs and emulate behavior |
| execute   | 1 (on)    | 0 - 5  | Counter to execute `/firmadyne/console` after 4th `execve()` syscall (requires syscall hooks), 0 to disable |
| reboot    | 1 (on)    | 0, 1   | Attempt to emulate system reboot by re-executing `/sbin/init` |
| procfs    | 1 (on)    | 0, 1   | Create stubs in procfs and emulate behavior |
| syscall   | 255 (all) | 0 - 16 | Output log bitmask for hooking system calls using the `kprobe` framework, 0 to disable |

Usage
=====

Since MIPS systems can be either big-endian or little-endian, this kernel
should be compiled for both endianness. The below instructions produce a little-
endian (mipsel) kernel, but should be repeated for a big-endian (mipseb) kernel.

Little-Endian (MIPSEL)
----------------------

Create the kernel build output directory:

`mkdir -p build/mipsel`

Copy the configuration file into the build directory:

`cp config.mipsel build/mipsel/.config`

Assuming that the appropriate cross-compiler is installed in `/opt/cross/mipsel-linux-musl`, execute:

`make ARCH=mips CROSS_COMPILE=/opt/cross/mipsel-linux-musl/bin/mipsel-linux-musl- O=./build/mipsel -j8`

The output kernel image will be generated at the following location:

`build/mipsel/vmlinux`

Big-Endian (MIPSEB)
-------------------

Create the kernel build output directory:

`mkdir -p build/mipseb`

Copy the configuration file into the build directory:

`cp config.mipseb build/mipseb/.config`

Assuming that the appropriate cross-compiler is installed in `/opt/cross/mipseb-linux-musl`, execute:

`make ARCH=mips CROSS_COMPILE=/opt/cross/mipseb-linux-musl/bin/mipseb-linux-musl- O=./build/mipseb -j8`

The output kernel image will be generated at the following location:

`build/mipseb/vmlinux`

Notes
=====

This instrumented MIPS kernel is built for the `ARCH_MALTA`
[MIPS Malta](http://wiki.qemu.org/download/qemu-doc.html#MIPS-System-emulator)
target with a 24kf processor. As a result, hardware support on this
emulated target is limited to peripherals that are both available on the
emulated target and supported by QEMU. Since an emulated PCI bus is available
and supported, this allows additional ethernet devices (e.g. `rtl8139`, 
`smc91c111`, `pcnet32`, etc.) to be attached to the virtualized system. 
Emulated hard drives can be attached using the IDE block device interface.

As future work, it may be useful to switch to
[VirtIO](http://wiki.libvirt.org/page/Virtio) on MIPS, since support has been
recently merged into the Linux kernel. However, this would require a kernel
upgrade. Additionally, it may be useful to add support for MIPS64 systems,
although these do not appear to be prevalent. Nevertheless, at the time, we
performed our published experiments over our dataset using this kernel for
MIPS systems.

Pull requests are greatly appreciated!