On Mon, May 07, 2018 at 10:40:34AM +0900, Yoshinori Sato wrote: > On Thu, 03 May 2018 19:07:38 +0900, > John Paul Adrian Glaubitz wrote: > > > > [1 <text/plain; utf-8 (7bit)>] > > Hi Rich! > > > > On 05/03/2018 04:33 AM, Rich Felker wrote: > > > I found the U-Boot stuff here: > > > > > > https://ja.osdn.net/users/ysato/pf/uboot/wiki/FrontPage > > > > > > but I'm not sure how to install it yet. Will try to figure it out. > > > > Interesting. It seems the HDL-160U uses u-boot instead of lilo which > > is used on my USL-5P. Both are based on the LANDISK platform though. > > I wonder whether it is possible to convert the USL-5P to use u-boot > > instead of the very limited lilo. > > > > As for the kernel configuration, for USL-5P, I had to use the kernel > > configuration attached to this mail. One important configuration setting > > is CONFIG_SH_PCLK_FREQ which has to be set to "33250000" otherwise > > the kernel won't boot properly. > > > > I still have my USL-5P ready to be set up for testing a new kernel > > image with the device tree patches merged. Although I still don't > > know how to enable the internal (pseudo) IDE controller. > > > > @Yoshinori: > > > > Did the HDL-160U LANDISK device you have use u-boot by default or > > did you convert it from lilo? > > Yes. > Replace sh-lilo's second stage with u-boot. > With this method it is unnecessary to rewrite Flash for boot.
Can you give me a brief explanation of how to reproduce the bootloader installation? For now I'm just using the existing MBR/partitioning you sent me, and replacing zImage.itb in /boot makes it attempt to load a new kernel, but I haven't gotten any output yet to know if it's working. Probably the most important thing I'm missing right now is what the its file for generating the zImage.itb should look like. I tried making one myself but it may be wrong. I'm also unsure whether I should use a zImage or vmlinux file as input, and if using a zImage file, what load address I should choose. For now I'm using the upstream landisk board support (maybe not working, we'll see). Once I can confirm I'm getting some output and the kernel seems minimally functional, I'm going to switch to DT, but integrating the DT stuff with u-boot isn't important right away since I can start with a linked-in DT. At some point I'd also like to know how to reinstall u-boot on the MBR or whatever. Rich
