diff options
Diffstat (limited to 'docs/plat/qemu.md')
| -rw-r--r-- | docs/plat/qemu.md | 44 |
1 files changed, 0 insertions, 44 deletions
diff --git a/docs/plat/qemu.md b/docs/plat/qemu.md deleted file mode 100644 index 5e6bcbce..00000000 --- a/docs/plat/qemu.md +++ /dev/null @@ -1,44 +0,0 @@ -ARM Trusted Firmware for QEMU virt ARMv8-A -========================================== - -ARM Trusted Firmware implements the EL3 firmware layer for QEMU virt -ARMv8-A. BL1 is used as the BootROM, supplied with the -bios argument. -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 Flattened Device Tree, FDT, generated by QEMU at run-time to -add a node describing PSCI and also enable methods for the CPUs. - -An ARM64 defonfig v4.5 Linux kernel is known to boot, FTD doesn't need to be -provided as it's generated by QEMU. - -Current limitations: -* Only cold boot is supported -* No build instructions for QEMU_EFI.fd and rootfs-arm64.cpio.gz -* No instructions for how to load a BL32 (Secure Payload) - -`QEMU_EFI.fd` can be dowloaded from -http://snapshots.linaro.org/components/kernel/leg-virt-tianocore-edk2-upstream/latest/QEMU-KERNEL-AARCH64/RELEASE_GCC49/QEMU_EFI.fd - -Boot binaries, except BL1, are primarily loaded via semi-hosting so all -binaries has to reside in the same directory as QEMU is started from. This -is conveniently achieved with symlinks the local names as: -* `bl2.bin` -> BL2 -* `bl31.bin` -> BL31 -* `bl33.bin` -> BL33 (`QEMU_EFI.fd`) -* `Image` -> linux/Image - -To build: -``` -make CROSS_COMPILE=aarch64-none-elf- PLAT=qemu -``` - -To start (QEMU v2.6.0): -``` -qemu-system-aarch64 -nographic -machine virt,secure=on -cpu cortex-a57 \ - -kernel Image \ - -append console=ttyAMA0,38400 keep_bootcon root=/dev/vda2 \ - -initrd rootfs-arm64.cpio.gz -smp 2 -m 1024 -bios bl1.bin \ - -d unimp -semihosting-config enable,target=native -``` |