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Merge changes from topic "qemu" into integration

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* changes:
  docs: qemu: bump to QEMU 5.0.0
  docs: qemu: remove unneeded root=/dev/vda2 kernel parameter
  docs: qemu: add build instructions for QEMU_EFI.fd and rootfs.cpio.gz
This commit is contained in:
Sandrine Bailleux 2020-08-05 07:42:45 +00:00 • committed by TrustedFirmware Code Review
commit 95f9b1fbf9
1 changed files with 43 additions and 8 deletions
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51
docs/plat/qemu.rst
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@ -20,11 +20,46 @@ provided as it's generated by QEMU.
Current limitations: Current limitations:
- Only cold boot is supported - Only cold boot is supported
- No build instructions for QEMU\_EFI.fd and rootfs-arm64.cpio.gz
``QEMU_EFI.fd`` can be dowloaded from Getting non-TF images
---------------------
``QEMU_EFI.fd`` can be downloaded from
http://snapshots.linaro.org/components/kernel/leg-virt-tianocore-edk2-upstream/latest/QEMU-KERNEL-AARCH64/RELEASE_GCC5/QEMU_EFI.fd http://snapshots.linaro.org/components/kernel/leg-virt-tianocore-edk2-upstream/latest/QEMU-KERNEL-AARCH64/RELEASE_GCC5/QEMU_EFI.fd
or, can be built as follows:
.. code:: shell
git clone https://github.com/tianocore/edk2.git
cd edk2
git submodule update --init
make -C BaseTools
source edksetup.sh
export GCC5_AARCH64_PREFIX=aarch64-linux-gnu-
build -a AARCH64 -t GCC5 -p ArmVirtPkg/ArmVirtQemuKernel.dsc
````
Then, you will get ``Build/ArmVirtQemuKernel-AARCH64/DEBUG_GCC5/FV/QEMU_EFI.fd``
Please note you do not need to use GCC 5 in spite of the environment variable
``GCC5_AARCH64_PREFIX``
The rootfs can be built by using Buildroot as follows:
.. code:: shell
git clone git://git.buildroot.net/buildroot.git
cd buildroot
make qemu_aarch64_virt_defconfig
utils/config -e BR2_TARGET_ROOTFS_CPIO
utils/config -e BR2_TARGET_ROOTFS_CPIO_GZIP
make olddefconfig
make
Then, you will get ``output/images/rootfs.cpio.gz``.
Booting via semi-hosting option Booting via semi-hosting option
------------------------------- -------------------------------
@ -43,14 +78,14 @@ To build:
make CROSS_COMPILE=aarch64-none-elf- PLAT=qemu make CROSS_COMPILE=aarch64-none-elf- PLAT=qemu
To start (QEMU v4.1.0): To start (QEMU v5.0.0):
.. code:: shell .. code:: shell
qemu-system-aarch64 -nographic -machine virt,secure=on -cpu cortex-a57 \ qemu-system-aarch64 -nographic -machine virt,secure=on -cpu cortex-a57 \
-kernel Image \ -kernel Image \
-append "console=ttyAMA0,38400 keep_bootcon root=/dev/vda2" \ -append "console=ttyAMA0,38400 keep_bootcon" \
-initrd rootfs-arm64.cpio.gz -smp 2 -m 1024 -bios bl1.bin \ -initrd rootfs.cpio.gz -smp 2 -m 1024 -bios bl1.bin \
-d unimp -semihosting-config enable,target=native -d unimp -semihosting-config enable,target=native
Booting via flash based firmwares Booting via flash based firmwares
@ -92,12 +127,12 @@ To build flash.bin:
dd if=build/qemu/release/bl1.bin of=flash.bin bs=4096 conv=notrunc dd if=build/qemu/release/bl1.bin of=flash.bin bs=4096 conv=notrunc
dd if=build/qemu/release/fip.bin of=flash.bin seek=64 bs=4096 conv=notrunc dd if=build/qemu/release/fip.bin of=flash.bin seek=64 bs=4096 conv=notrunc
To start (QEMU v2.6.0): To start (QEMU v5.0.0):
.. code:: shell .. code:: shell
qemu-system-aarch64 -nographic -machine virt,secure=on -cpu cortex-a57 \ qemu-system-aarch64 -nographic -machine virt,secure=on -cpu cortex-a57 \
-kernel Image -no-acpi \ -kernel Image -no-acpi \
-append 'console=ttyAMA0,38400 keep_bootcon root=/dev/vda2' \ -append 'console=ttyAMA0,38400 keep_bootcon' \
-initrd rootfs-arm64.cpio.gz -smp 2 -m 1024 -bios flash.bin \ -initrd rootfs.cpio.gz -smp 2 -m 1024 -bios flash.bin \
-d unimp -d unimp