1. 28 Mar, 2015 1 commit
  2. 03 Jul, 2014 1 commit
    • Darwin Rambo's avatar
      arm: Add support for semihosting for armv8 fastmodel targets. · 261d2760
      Darwin Rambo authored
      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: default avatarDarwin Rambo <drambo@broadcom.com>
      Cc: trini@ti.com
      Cc: fenghua@phytium.com.cn
      Cc: bhupesh.sharma@freescale.com
      261d2760