On Sun, 27 Jul 2003
guo@unication.com.cn wrote:
> My question is, I have only 16K Bytes bootloader size, Can I put
> the some base codes and YAFFS Bootloader into it?
> I use Samsung 2410 CPU to develop a Linux system with NAND FLASH.
> Because this CPU can load first 16K Bytes NAND FLASH into RAM at
> boot time, so I drop every MROM & NOR FLASH. Can I put the some
> base codes and YAFFS Bootloader into 16K Bytes? If it can be, the
> Linux loader and Linux Kernel can be put with YAFFS format, It is
> very helpful to me. If not, I must mange it myself.
Download
http://www.arava.co.il/matan/work/misc/blob-207.tgz
This is a boot loader I adapted for SH4, and includes booting from
yaffs. All the code for reading yaffs is in the file yaffs.c. On SH4
(which has a high code density) it compiles to 4KB, so I expect it
should be less that 8KB on an ARM processor. If it is still too much,
you can implement a slower ecc routine which takes less space, or
eliminate ecc at all.
--
Matan Ziv-Av. matan@svgalib.org
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