Hi,
On 1 July 2016 at 00:13, vinoth eswaran evinoth1206@gmail.com wrote:
Hello,
I am working on an embedded project using Minnowboard Max with U-boot and customised Linux kernel.
To optimize boot time, currently I am comparing the different comparison algorithms and have read about Brotli compression, which seems to be good. So I have planned to test and see how good is Brotli compression for my use case? The current Linux kernel and U-boot doesn't support this compression, so I have to add this compression algorithm code.
I am seeing two ways of doing this,
- In U-Boot
Fit Image creation from vmlinux. Adding Brotli compression to mkimage tool and decompressor to U-Boot. Here we are using mkimage tool to create the image.fit. I can do some changes in mkimage and add the decompressor to the U-boot code
- In Linux Kernel
bzImage --> adding the Brotli compression and decompression to Linux Kernel
and change the default compression from gzip to brotli in the Linux kernel Configuration.
I don't know which way is comparably easier to implement, any suggestions on these topic will be of great help. Have any body tried this algorithm for the Linux Kernel??
I suggest going with option 1. U-Boot supports several algorithms so another one is pretty easy to add. The last one was IH_COMP_LZ4, so you can search for that in the code. The commit was:
027b728d Add support for LZ4 decompression algorithm
Regards, Simon