7.3.4. Arm Versatile Express
Versatile Express (VE) family development platform provides an ultra fast environment for prototyping Armv7 System-on-Chip designs. VE Fixed Virtual Platforms (FVP) are simulations of Versatile Express boards. The platform in Trusted Firmware-A has been verified with Arm Cortex-A5 and Cortex-A7 VE FVP’s. This platform is tested on and only expected to work with single core models.
7.3.4.1. Boot Sequence
BL1 –> BL2 –> BL32(sp_min) –> BL33(u-boot) –> Linux kernel
7.3.4.2. How to build
7.3.4.2.1. Code Locations
7.3.4.2.2. Build Procedure
Obtain arm toolchain. The software stack has been verified with linaro 6.2 arm-linux-gnueabihf. Set the CROSS_COMPILE environment variable to point to the toolchain folder.
Fetch and build u-boot. Make the .config file using the command:
make ARCH=arm vexpress_aemv8a_aarch32_config
Make the u-boot binary for Cortex-A5 using the command:
make ARCH=arm SUPPORT_ARCH_TIMER=no
Make the u-boot binary for Cortex-A7 using the command:
make ARCH=arm
Build TF-A:
The make command for Cortex-A5 is:
make PLAT=fvp_ve ARCH=aarch32 ARM_ARCH_MAJOR=7 ARM_CORTEX_A5=yes \ AARCH32_SP=sp_min FVP_HW_CONFIG_DTS=fdts/fvp-ve-Cortex-A5x1.dts \ ARM_XLAT_TABLES_LIB_V1=1 BL33=<path_to_u-boot.bin> all fip
The make command for Cortex-A7 is:
make PLAT=fvp_ve ARCH=aarch32 ARM_ARCH_MAJOR=7 ARM_CORTEX_A7=yes \ AARCH32_SP=sp_min FVP_HW_CONFIG_DTS=fdts/fvp-ve-Cortex-A7x1.dts \ BL33=<path_to_u-boot.bin> all fip
7.3.4.2.3. Run Procedure
The following model parameters should be used to boot Linux using the build of Trusted Firmware-A made using the above make commands:
./<path_to_model> <path_to_bl1.elf> \ -C motherboard.flashloader1.fname=<path_to_fip.bin> \ --data cluster.cpu0=<path_to_zImage>@0x80080000 \ --data cluster.cpu0=<path_to_ramdisk>@0x84000000
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