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rockchip: rk3399: Get bl31.elf via BL31

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Right now rockchip platform need to copy bl31.elf into u-boot
source directory to make use of building u-boot.itb.

So, add environment variable BL31 like Allwinner SoC so-that the
bl31.elf would available via BL31.

If the builds are not exporting BL31 env, the make_fit_atf.py
explicitly create dummy bl31.elf in u-boot root directory to
satisfy travis builds and it will show the warning on console as

 WARNING: BL31 file bl31.elf NOT found, resulting binary is non-functional
 WARNING: Please read Building section in doc/README.rockchip

Note, that the dummy bl31 files were created during not exporting
BL31 case would be removed via clean target in Makefile.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
This commit is contained in:
Jagan Teki
2019-06-20 16:29:22 +05:30
committed by Kever Yang
parent cca4f576d0
commit 96070460c3
3 changed files with 20 additions and 5 deletions
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4
doc/README.rockchip
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@@ -150,8 +150,8 @@ For example:
=> make realclean
=> make CROSS_COMPILE=aarch64-linux-gnu- PLAT=rk3399
(copy bl31.elf into U-Boot root dir)
=> cp build/rk3399/release/bl31/bl31.elf /path/to/u-boot
(export bl31.elf)
=> export BL31=/path/to/arm-trusted-firmware/build/rk3399/release/bl31/bl31.elf
- Compile PMU M0 firmware