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diff --git a/docs/plat/xilinx-versal.rst b/docs/plat/xilinx-versal.rst new file mode 100644 index 0000000..09a6ee2 --- /dev/null +++ b/docs/plat/xilinx-versal.rst @@ -0,0 +1,55 @@ +Xilinx Versal +============= + +Trusted Firmware-A implements the EL3 firmware layer for Xilinx Versal. +The platform only uses the runtime part of TF-A as Xilinx Versal already has a +BootROM (BL1) and PMC FW (BL2). + +BL31 is TF-A. +BL32 is an optional Secure Payload. +BL33 is the non-secure world software (U-Boot, Linux etc). + +To build: +```bash +make RESET_TO_BL31=1 CROSS_COMPILE=aarch64-none-elf- PLAT=versal bl31 +``` + +To build ATF for different platform (supported are "silicon"(default) and "versal_virt") +```bash +make RESET_TO_BL31=1 CROSS_COMPILE=aarch64-none-elf- PLAT=versal VERSAL_PLATFORM=versal_virt bl31 +``` + +To build TF-A for JTAG DCC console +```bash +make RESET_TO_BL31=1 CROSS_COMPILE=aarch64-none-elf- PLAT=versal bl31 VERSAL_CONSOLE=dcc +``` + +To build TF-A with Straight-Line Speculation(SLS) +```bash +make RESET_TO_BL31=1 CROSS_COMPILE=aarch64-none-elf- PLAT=versal bl31 HARDEN_SLS_ALL=1 +``` + +Xilinx Versal platform specific build options +--------------------------------------------- + +* `VERSAL_ATF_MEM_BASE`: Specifies the base address of the bl31 binary. +* `VERSAL_ATF_MEM_SIZE`: Specifies the size of the memory region of the bl31 binary. +* `VERSAL_BL32_MEM_BASE`: Specifies the base address of the bl32 binary. +* `VERSAL_BL32_MEM_SIZE`: Specifies the size of the memory region of the bl32 binary. + +* `VERSAL_CONSOLE`: Select the console driver. Options: + - `pl011`, `pl011_0`: ARM pl011 UART 0 + - `pl011_1` : ARM pl011 UART 1 + +* `VERSAL_PLATFORM`: Select the platform. Options: + - `versal_virt` : Versal Virtual platform + - `spp_itr6` : SPP ITR6 + - `emu_itr6` : EMU ITR6 + +# PLM->TF-A Parameter Passing +------------------------------ +The PLM populates a data structure with image information for the TF-A. The TF-A +uses that data to hand off to the loaded images. The address of the handoff +data structure is passed in the ```PMC_GLOBAL_GLOB_GEN_STORAGE4``` register. +The register is free to be used by other software once the TF-A is bringing up +further firmware images. |