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| author | Soby Mathew <soby.mathew@arm.com> | 2019-10-03 13:23:37 +0000 |
|---|---|---|
| committer | TrustedFirmware Code Review <review@review.trustedfirmware.org> | 2019-10-03 13:23:37 +0000 |
| commit | efcf951f6113d1ee0f47af883130512edaeaeeeb (patch) | |
| tree | 5fa778384c8f9920a6d06b447189e9d2d3e3864e /docs | |
| parent | 82d8d4ab59986b2747fd329405c57e21dcbf6055 (diff) | |
| parent | fa405e3b82ae9ed764e6f37745e612c86a8be183 (diff) | |
Merge changes from topic "qemu_sbsa" into integration
* changes:
qemu/qemu_sbsa: Adding memory mapping for both FLASH0/FLASH1
qemu/qemu_sbsa: Adding Qemu SBSA platform
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 + |