Eric Lee / smarc-uboot

29 Mar, 2015

1 commit

  • 202a674bb   armv8: semihosting: add a command to load semihosted images ... Browse Code »

    Instead of sprinkling custom code and calls over the Vexpress64
    boardfile, create a command that loads images using semihosting
    just like we would load from flash memory of over the network,
    using a special command:

    smhload

    This will make it possible to remove some custom calls and
    code and make the boot easier.

    Signed-off-by: Linus Walleij

    Linus Walleij
     

03 Jul, 2014

1 commit

  • 261d27605   arm: Add support for semihosting for armv8 fastmodel targets. ... Browse Code »

    The armv8 ARM Trusted Firmware (ATF) can be used to load various ATF
    images and u-boot, and does this for virtual platforms by using
    semihosting. This commit extends this idea by allowing u-boot to also
    use semihosting to load the kernel/ramdisk/dtb. This eliminates the need
    for a bootwrapper and produces a more realistic boot sequence with
    virtual models.

    Though the semihosting code is quite generic, support for armv7 in
    fastmodel is less useful due to the wide range of available silicon
    and the lack of a free armv7 fastmodel, so this change contains an
    untested armv7 placeholder for the service trap opcode.

    Please refer to doc/README.semihosting for a more detailed description
    of semihosting and how it is used with the armv8 virtual platforms.

    Signed-off-by: Darwin Rambo
    Cc: trini@ti.com
    Cc: fenghua@phytium.com.cn
    Cc: bhupesh.sharma@freescale.com

    Darwin Rambo