ARM Trusted Firmware for Raspberry Pi 3

The bl1.bin and fip.bin TF-A binaries found in this directory were built from the
official TF-A 2.5 release
through a GitHub build script
that is designed to provide evidence that these binaries match the vanilla TF-A source.

Per the GitHub Actions log,
the SHA-256 sums for the blobs can be validated to be as follows:
- bl1.bin: 5ba701a7e977d308a19928e19937107387677d52a1a4d628a5c2bb4e795aae8b
- fip.bin: 0c3f8a3e8192e5dcb3bdc5867976e4277e9d948159a92ee71a54e92cb8dce9a3

For Raspberry Pi 3 usage, TF-A was built using the command:
make PLAT=rpi3 RPI3_PRELOADED_DTB_BASE=0x10000 PRELOADED_BL33_BASE=0x30000 SUPPORT_VFP=1 RPI3_USE_UEFI_MAP=1 DEBUG=0 fip all
which results in the following memory mapping:
0x00000000 +-----------------+ | ROM | BL1 0x00010000 +-----------------+ | Nothing | 0x00020000 +-----------------+ | FIP | 0x00030000 +-----------------+ | | | UEFI PAYLOAD | | | 0x001f0000 +-----------------+ | DTB | (Loaded by the VideoCore) 0x00200000 +-----------------+ | Secure SRAM | BL2, BL31 0x00300000 +-----------------+ | Secure DRAM | BL32 (Secure payload) 0x00400000 +-----------------+ | | | | | Non-secure DRAM | BL33 | | | | 0x01000000 +-----------------+ | | | ... | | | 0x3F000000 +-----------------+ | I/O |