lkml.org 
[lkml]   [2017]   [Aug]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRE: [PATCH 0/5] cramfs refresh for embedded usage
Date
On Friday, August 11, 2017, Nicolas Pitre wrote:
> This series brings a nice refresh to the cramfs filesystem, adding the
> following capabilities:
>
> - Direct memory access, bypassing the block and/or MTD layers entirely.
>
> - Ability to store individual data blocks uncompressed.
>
> - Ability to locate individual data blocks anywhere in the filesystem.
>
> The end result is a very tight filesystem that can be accessed directly
> from ROM without any other subsystem underneath. Also this allows for
> user space XIP which is a very important feature for tiny embedded
> systems.



I just applied the patches tried this simple test:
- tested with a Renesas RZ/A1 (Cortex-A9...so it has an MMU).
- I set the sticky bit for busybox before using mkcramfs
- booted (with squashfs) and mounted the cramfs image
- confirmed that the sticky bit was still set on busybox
- was able to execute busybox in the cramfs image


However, at this point I'm not sure how I can confirm that the XIP
busybox actually executed as XIP or not.


Chris

\
 
 \ /
  Last update: 2017-08-14 19:13    [W:0.090 / U:6.124 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site