https://github.com/aztechsk/rdmem

rdmem is a Linux kernel module enabling remapping and reading of the hardware address space of the processor into kernel memory.
https://github.com/aztechsk/rdmem

linux-kernel lkm

Last synced: 5 days ago
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rdmem is a Linux kernel module enabling remapping and reading of the hardware address space of the processor into kernel memory.

• Host: GitHub
• URL: https://github.com/aztechsk/rdmem
• Owner: aztechsk
• License: other
• Created: 2024-04-11T07:45:34.000Z (6 months ago)
• Default Branch: main
• Last Pushed: 2024-04-11T07:51:32.000Z (6 months ago)
• Last Synced: 2024-09-25T18:59:07.390Z (8 days ago)
• Topics: linux-kernel, lkm
• Language: C
• Homepage:
• Size: 7.81 KB
• Stars: 0
• Watchers: 0
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        

# rdmem

**rdmem** is a Linux kernel module enabling remapping and reading of the hardware address space of the processor into kernel virtual memory. Memory can be read through the /dev/rdmem interface in userspace.

**rdmem/lkm/rdmem.c** - kernel module.   

**rdmem/rdmem/rdmem.c** - userspace application for reading data from /dev/rdmem device file.

Example reads SAM9N12's *General Purpose Backup Register* peripheral (hw address 0xFFFFFE60):

    $ rdmem -a 0xFFFFFE60 -s 20 -b 32

    Options: address=0x00000000FFFFFE60 size=20 read=B32.

    0102.0304 0506.0708 0910.1112 1314.15AA

    0000.0000

    ---------

    $ cat /proc/iomem

    fffff800-fffff9ff : fffff800.gpio gpio@fffff800

    fffffa00-fffffbff : fffffa00.gpio gpio@fffffa00

    fffffe00-fffffe0f : fffffe00.reset-controller reset-controller@fffffe00

    fffffe60-fffffe73 : rdmem

    $