mbox series

[0/4] Add WaRP7 ATF chainloaded setup

Message ID 20180905105608.453-1-bryan.odonoghue@linaro.org
Headers show
Series Add WaRP7 ATF chainloaded setup | expand

Message

Bryan O'Donoghue Sept. 5, 2018, 10:56 a.m. UTC 
This set of patches makes a version of u-boot that is bootable as BL33 in a
chainloded set of images in the following sequence.

BootROM -> ATF (loads a FIP) -> OPTEE -> u-boot -> Linux.

Since the OPTEE image enables TrustZone u-boot no longer has access to
certain low-level functions. In order to differentiate between the full-fat
WaRP7 u-boot which is usually run by the BootROM directly a second
defconfig is introduced along with some minimal skipping of low-level bit
twiddling.

For those motivated to try a description of how to set up the WaRP7 in ATF
mode is here:

https://github.com/bryanodonoghue/arm-trusted-firmware/blob/atf-master%2Blinaro-warp7-squash-v4/docs/plat/warp7.rst

Rui Miguel Silva (4):
  imx: mx7: avoid some initialization if low level is skipped
  optee: adjust dependencies and default values for dram
  warp7: include: configs: set skip low level init
  warp7: configs: add bl33 defconfig

 arch/arm/mach-imx/mx7/soc.c    |  2 ++
 arch/arm/mach-imx/syscounter.c |  2 ++
 configs/warp7_bl33_defconfig   | 42 ++++++++++++++++++++++++++++++++++
 configs/warp7_defconfig        |  2 ++
 include/configs/warp7.h        | 11 +++++++++
 lib/optee/Kconfig              |  8 +++----
 6 files changed, 63 insertions(+), 4 deletions(-)
 create mode 100644 configs/warp7_bl33_defconfig