Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

Memory Map

Heya,

Here's a simple one for you all... The system.map in the kernel project lists a memory map of sorts for the kernel in SDRAM. I'd like to see the same thing for the romfs, ramdisks, etc. I see the romfs.map in the filesystem project, but this seems to relate to location in flash. Overall, I'd like to know the start through end address of SDRAM that is required to run my complete system once it is booted up, as I will later be optimizing this and utilizing the remaining space for other tasks.

Thanks,

Matt

4 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    20 years ago

    hi, I'd like to know hwo to build rootfs in ramdisk,and compressed to reduce size, then u-boot can compress both kernel and rootfs.

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    20 years ago

    I'm still having trouble locating the space in SDRAM that is being utilized for my system. If someone knows of documentation that covers an explanation of this would you be so kind as to point me in the right direction?

    Thanks much,

    Matt
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    20 years ago

    > I'm still having trouble locating the space in SDRAM that is being utilized for

    > my system

    cat /proc/meminfo ... you might find some of what you're looking for in there.

    Regards,

    --Scott
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    20 years ago

    Right, /proc/meminfo provides some information on availability of space. However, there's no information on how fragmented/contiguous this memory space available is. I'd like to adjust my configuration to place all o/s related information in a tightly packed and dedicated area in sdram, so that I can utilize the remaining for another purpose.

    Any other ideas or suggestions out there?

    Thanks,

    Matt