Hi Simon,
Thanks for the prompt reply.
On Fri, 6 Sep, 2019, 8:13 AM Simon Goldschmidt, < simon.k.r.goldschmidt@gmail.com> wrote:
Hi,
On Thu, Sep 5, 2019 at 4:14 PM Moses Christopher moseschristopherb@gmail.com wrote:
Hello together,
I was trying to build u-boot and spl for the arm target and tried to boot
via usb-ethernet.
I found an issue with one of the commit made in the early 2019, http://patchwork.ozlabs.org/patch/1024795/
When using this CONFIG_LMB the max_size or the lmb_get_free_size(&lmb,
load_addr); returns 0, no matter what.
And it triggers the following error, TFTP error: trying to overwrite reserved memory... I did a quick fix by adding #undef CONFIG_LMB in the file, net/tftp.c So, I would like to know why this doesn’t work as it was working before
applying this patch ?
Can you add "#define DEBUG" as the first line in 'lib/lmb.c'? That should give you debug output when lmb is used.
I did add DEBUG macro to lmb.c but the function having the debug messages isn't getting called. I suppose it was from fs/fs.c
FYI, I'm trying to load SPL and uboot on RAM, using USB-ETH. Also the environment is not stored separately, neither the device tree.
The lmb code works by getting the RAM size, adding reserved areas and then only allowing allocations in non-reserved areay. However, the RAM size is not fully used depending on some config options and/or environment variables. There's possibly something wrong in your configuration around that.
Because, earlier to this patch, net/tftp.c isn't actually checking for the reserved memory regions and is able to download the files properly on the RAM and it works. I know, that's not a good approach, hence you've made the necessary changes to correct it.
Could you kindly provide me some information, where I can read more about the reserved memory regions and how exactly some region is treated as reserved region ?
Also, it'd be great if you could provide some information related to the configuration of Reserved and free addresses of RAM.
Thank you for your patience and time.
Regards, Simon
Best regards, Moses Christopher
Best regards, Moses Christopher