diff options
| author | Radoslaw Biernacki <radoslaw.biernacki@linaro.org> | 2018-05-17 22:52:49 +0200 |
|---|---|---|
| committer | Radoslaw Biernacki <rad@semihalf.com> | 2019-10-01 17:23:56 +0200 |
| commit | 558a6f444d54f419e90ead976bf28cf25797f4e4 (patch) | |
| tree | e255b03407f300390cbf1a4eff6bc3f99628cf53 /docs | |
| parent | c5235cae8e0c7c70ae9b4a8c41d77db17c885418 (diff) | |
qemu/qemu_sbsa: Adding Qemu SBSA platform
This patch introduces Qemu SBSA platform.
Both platform specific files where copied from qemu/qemu with changes for
DRAM base above 32bit and removal of ARMv7 conditional defines/code.
Documentation is aligned to rest of SBSA patches along the series and
planed changes in edk2-platform repo.
Fixes ARM-software/tf-issues#602
Signed-off-by: Radoslaw Biernacki <radoslaw.biernacki@linaro.org>
Change-Id: I8ebc34eedb2268365e479ef05654b2df1b99128c
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/plat/qemu_sbsa.rst | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/docs/plat/qemu_sbsa.rst b/docs/plat/qemu_sbsa.rst new file mode 100644 index 00000000..e04a63c7 --- /dev/null +++ b/docs/plat/qemu_sbsa.rst @@ -0,0 +1,48 @@ +Trusted Firmware-A for QEMU SBSA target +======================================== + +Trusted Firmware-A (TF-A) implements the EL3 firmware layer for QEMU SBSA +Armv8-A. While running Qemu from command line, we need to supply two Flash +images. First Secure BootRom is supplied by -pflash argument. This Flash image +is made by EDK2 build system by composing BL1 and FIP. Second parameter for Qemu +is responsible for Non-secure rom which also given with -pflash argument and +contains of UEFI and EFI variables (also made by EDK2 build system). Semihosting +is not used + +When QEMU starts all CPUs are released simultaneously, BL1 selects a +primary CPU to handle the boot and the secondaries are placed in a polling +loop to be released by normal world via PSCI. + +BL2 edits the FDT, generated by QEMU at run-time to add a node describing PSCI +and also enable methods for the CPUs. + +Current limitations: + +- Only cold boot is supported +- No instructions for how to load a BL32 (Secure Payload) + +To build TF-A: + +:: + + git clone https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git tfa + cd tfa + export CROSS_COMPILE=aarch64-linux-gnu- + make PLAT=qemu_sbsa all fip + +Images will be placed at build/qemu_sbsa/release (bl1.bin and fip.bin). +Need to copy them into top directory for EDK2 compilation. + +:: + + cp build/qemu_sbsa/release/bl1.bin ../ + cp build/qemu_sbsa/release/fip.bin ../ + +Those images cannot be used by itself (no semihosing support). Flash images are built by +EDK2 build system, refer to edk2-platform repo for full build instructions. + +:: + + git clone https://github.com/tianocore/edk2-platforms.git + Platform/Qemu/SbsaQemu/Readme.md + |