ATF can be used in different ways:
- ATF encapsulates U-Boot as the BL33, which is what is done on ARM
Juno (currently supported in Buildroot) and Marvell platforms (soon
to be supported)
- U-Boot encapsulates ATF's BL31, which is what is done on Allwinner
ARM64 platforms.
Until now we were assumming the former was always the case, but
obviously it isn't. Therefore, this patch adds an option that allows
to explicitly tell ATF that it encapsulates U-Boot as its BL33.
We adapt the only defconfig that uses ATF so that it enables this
option as appropriate.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Currently, our arm-trusted-firmware unconditionally builds a FIP
(Firmware Image Package). While this is often needed on platforms
where ATF encapsulates U-Boot, it is not the case on some other
platforms where it's U-Boot that encapsulates parts of ATF.
In order to prepare the support for the later platforms, we make
building the FIP image optional, and update the only defconfig we have
that uses ARM Trusted Firmware.
Note: we considered adding a "default y" here to preserve backward
compatibility, but there really isn't any default that is sane:
whether a FIP image needs to be built or not is purely platform
specific.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: Sergey Matyukevich <geomatsi@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Since commit
0924208839 ("configs/arm_juno: use 4.6
mainline kernel"), we're using a mainline kernel for the ARM Juno
board. But we're still fetching it from a Git repository, which is not
really efficient, so let's switch to use a tarball instead.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Thanks to the recent addition of the vexpress-firmware and
arm-trusted-firmware packages, this commit improves the ARM Juno
defconfig to also build a bootloader.
Signed-off-by: Joao Pinto <jpinto@synopsys.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
The Juno ARM Development Platform (ADP) is a software development
platform for ARMv8-A, it includes the Juno Versatile Express board
and an ARMv8-A reference software port available through Linaro.
Signed-off-by: Joao Pinto <jpinto@synopsys.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
